[303] | 1 | /**
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| 2 | ******************************************************************************
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| 3 | * @file stm32f4xx_hal_i2c.c
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| 4 | * @author MCD Application Team
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| 5 | * @version V1.4.1
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| 6 | * @date 09-October-2015
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| 7 | * @brief I2C HAL module driver.
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| 8 | * This file provides firmware functions to manage the following
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| 9 | * functionalities of the Inter Integrated Circuit (I2C) peripheral:
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| 10 | * + Initialization and de-initialization functions
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| 11 | * + IO operation functions
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| 12 | * + Peripheral Control functions
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| 13 | * + Peripheral State functions
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| 14 | *
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| 15 | @verbatim
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| 16 | ==============================================================================
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| 17 | ##### How to use this driver #####
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| 18 | ==============================================================================
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| 19 | [..]
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| 20 | The I2C HAL driver can be used as follows:
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| 21 |
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| 22 | (#) Declare a I2C_HandleTypeDef handle structure, for example:
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| 23 | I2C_HandleTypeDef hi2c;
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| 24 |
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| 25 | (#)Initialize the I2C low level resources by implement the HAL_I2C_MspInit() API:
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| 26 | (##) Enable the I2Cx interface clock
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| 27 | (##) I2C pins configuration
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| 28 | (+++) Enable the clock for the I2C GPIOs
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| 29 | (+++) Configure I2C pins as alternate function open-drain
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| 30 | (##) NVIC configuration if you need to use interrupt process
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| 31 | (+++) Configure the I2Cx interrupt priority
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| 32 | (+++) Enable the NVIC I2C IRQ Channel
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| 33 | (##) DMA Configuration if you need to use DMA process
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| 34 | (+++) Declare a DMA_HandleTypeDef handle structure for the transmit or receive stream
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| 35 | (+++) Enable the DMAx interface clock using
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| 36 | (+++) Configure the DMA handle parameters
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| 37 | (+++) Configure the DMA Tx or Rx Stream
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| 38 | (+++) Associate the initialized DMA handle to the hi2c DMA Tx or Rx handle
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| 39 | (+++) Configure the priority and enable the NVIC for the transfer complete interrupt on
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| 40 | the DMA Tx or Rx Stream
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| 41 |
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| 42 | (#) Configure the Communication Speed, Duty cycle, Addressing mode, Own Address1,
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| 43 | Dual Addressing mode, Own Address2, General call and Nostretch mode in the hi2c Init structure.
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| 44 |
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| 45 | (#) Initialize the I2C registers by calling the HAL_I2C_Init(), configures also the low level Hardware
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| 46 | (GPIO, CLOCK, NVIC...etc) by calling the customized HAL_I2C_MspInit(&hi2c) API.
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| 47 |
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| 48 | (#) To check if target device is ready for communication, use the function HAL_I2C_IsDeviceReady()
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| 49 |
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| 50 | (#) For I2C IO and IO MEM operations, three operation modes are available within this driver :
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| 51 |
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| 52 | *** Polling mode IO operation ***
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| 53 | =================================
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| 54 | [..]
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| 55 | (+) Transmit in master mode an amount of data in blocking mode using HAL_I2C_Master_Transmit()
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| 56 | (+) Receive in master mode an amount of data in blocking mode using HAL_I2C_Master_Receive()
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| 57 | (+) Transmit in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Transmit()
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| 58 | (+) Receive in slave mode an amount of data in blocking mode using HAL_I2C_Slave_Receive()
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| 59 |
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| 60 | *** Polling mode IO MEM operation ***
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| 61 | =====================================
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| 62 | [..]
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| 63 | (+) Write an amount of data in blocking mode to a specific memory address using HAL_I2C_Mem_Write()
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| 64 | (+) Read an amount of data in blocking mode from a specific memory address using HAL_I2C_Mem_Read()
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| 65 |
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| 66 |
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| 67 | *** Interrupt mode IO operation ***
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| 68 | ===================================
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| 69 | [..]
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| 70 | (+) Transmit in master mode an amount of data in non blocking mode using HAL_I2C_Master_Transmit_IT()
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| 71 | (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can
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| 72 | add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback
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| 73 | (+) Receive in master mode an amount of data in non blocking mode using HAL_I2C_Master_Receive_IT()
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| 74 | (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can
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| 75 | add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback
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| 76 | (+) Transmit in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Transmit_IT()
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| 77 | (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can
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| 78 | add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback
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| 79 | (+) Receive in slave mode an amount of data in non blocking mode using HAL_I2C_Slave_Receive_IT()
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| 80 | (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can
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| 81 | add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback
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| 82 | (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
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| 83 | add his own code by customization of function pointer HAL_I2C_ErrorCallback
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| 84 |
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| 85 | *** Interrupt mode IO MEM operation ***
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| 86 | =======================================
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| 87 | [..]
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| 88 | (+) Write an amount of data in no-blocking mode with Interrupt to a specific memory address using
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| 89 | HAL_I2C_Mem_Write_IT()
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| 90 | (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can
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| 91 | add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback
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| 92 | (+) Read an amount of data in no-blocking mode with Interrupt from a specific memory address using
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| 93 | HAL_I2C_Mem_Read_IT()
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| 94 | (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can
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| 95 | add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback
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| 96 | (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
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| 97 | add his own code by customization of function pointer HAL_I2C_ErrorCallback
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| 98 |
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| 99 | *** DMA mode IO operation ***
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| 100 | ==============================
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| 101 | [..]
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| 102 | (+) Transmit in master mode an amount of data in non blocking mode (DMA) using
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| 103 | HAL_I2C_Master_Transmit_DMA()
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| 104 | (+) At transmission end of transfer HAL_I2C_MasterTxCpltCallback is executed and user can
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| 105 | add his own code by customization of function pointer HAL_I2C_MasterTxCpltCallback
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| 106 | (+) Receive in master mode an amount of data in non blocking mode (DMA) using
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| 107 | HAL_I2C_Master_Receive_DMA()
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| 108 | (+) At reception end of transfer HAL_I2C_MasterRxCpltCallback is executed and user can
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| 109 | add his own code by customization of function pointer HAL_I2C_MasterRxCpltCallback
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| 110 | (+) Transmit in slave mode an amount of data in non blocking mode (DMA) using
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| 111 | HAL_I2C_Slave_Transmit_DMA()
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| 112 | (+) At transmission end of transfer HAL_I2C_SlaveTxCpltCallback is executed and user can
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| 113 | add his own code by customization of function pointer HAL_I2C_SlaveTxCpltCallback
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| 114 | (+) Receive in slave mode an amount of data in non blocking mode (DMA) using
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| 115 | HAL_I2C_Slave_Receive_DMA()
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| 116 | (+) At reception end of transfer HAL_I2C_SlaveRxCpltCallback is executed and user can
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| 117 | add his own code by customization of function pointer HAL_I2C_SlaveRxCpltCallback
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| 118 | (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
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| 119 | add his own code by customization of function pointer HAL_I2C_ErrorCallback
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| 120 |
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| 121 | *** DMA mode IO MEM operation ***
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| 122 | =================================
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| 123 | [..]
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| 124 | (+) Write an amount of data in no-blocking mode with DMA to a specific memory address using
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| 125 | HAL_I2C_Mem_Write_DMA()
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| 126 | (+) At MEM end of write transfer HAL_I2C_MemTxCpltCallback is executed and user can
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| 127 | add his own code by customization of function pointer HAL_I2C_MemTxCpltCallback
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| 128 | (+) Read an amount of data in no-blocking mode with DMA from a specific memory address using
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| 129 | HAL_I2C_Mem_Read_DMA()
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| 130 | (+) At MEM end of read transfer HAL_I2C_MemRxCpltCallback is executed and user can
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| 131 | add his own code by customization of function pointer HAL_I2C_MemRxCpltCallback
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| 132 | (+) In case of transfer Error, HAL_I2C_ErrorCallback() function is executed and user can
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| 133 | add his own code by customization of function pointer HAL_I2C_ErrorCallback
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| 134 |
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| 135 |
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| 136 | *** I2C HAL driver macros list ***
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| 137 | ==================================
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| 138 | [..]
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| 139 | Below the list of most used macros in I2C HAL driver.
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| 140 |
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| 141 | (+) __HAL_I2C_ENABLE: Enable the I2C peripheral
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| 142 | (+) __HAL_I2C_DISABLE: Disable the I2C peripheral
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| 143 | (+) __HAL_I2C_GET_FLAG : Checks whether the specified I2C flag is set or not
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| 144 | (+) __HAL_I2C_CLEAR_FLAG : Clear the specified I2C pending flag
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| 145 | (+) __HAL_I2C_ENABLE_IT: Enable the specified I2C interrupt
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| 146 | (+) __HAL_I2C_DISABLE_IT: Disable the specified I2C interrupt
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| 147 |
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| 148 | [..]
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| 149 | (@) You can refer to the I2C HAL driver header file for more useful macros
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| 150 |
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| 151 |
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| 152 | @endverbatim
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| 153 | ******************************************************************************
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| 154 | * @attention
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| 155 | *
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| 156 | * <h2><center>© COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
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| 157 | *
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| 158 | * Redistribution and use in source and binary forms, with or without modification,
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| 159 | * are permitted provided that the following conditions are met:
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| 160 | * 1. Redistributions of source code must retain the above copyright notice,
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| 161 | * this list of conditions and the following disclaimer.
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| 162 | * 2. Redistributions in binary form must reproduce the above copyright notice,
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| 163 | * this list of conditions and the following disclaimer in the documentation
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| 164 | * and/or other materials provided with the distribution.
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| 165 | * 3. Neither the name of STMicroelectronics nor the names of its contributors
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| 166 | * may be used to endorse or promote products derived from this software
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| 167 | * without specific prior written permission.
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| 168 | *
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| 169 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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| 170 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 171 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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| 172 | * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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| 173 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 174 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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| 175 | * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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| 176 | * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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| 177 | * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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| 178 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 179 | *
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| 180 | ******************************************************************************
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| 181 | */
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| 182 |
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| 183 | /* Includes ------------------------------------------------------------------*/
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| 184 | #include "stm32f4xx_hal.h"
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| 185 |
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| 186 | /** @addtogroup STM32F4xx_HAL_Driver
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| 187 | * @{
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| 188 | */
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| 189 |
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| 190 | /** @defgroup I2C I2C
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| 191 | * @brief I2C HAL module driver
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| 192 | * @{
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| 193 | */
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| 194 |
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| 195 | #ifdef HAL_I2C_MODULE_ENABLED
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| 196 |
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| 197 | /* Private typedef -----------------------------------------------------------*/
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| 198 | /* Private define ------------------------------------------------------------*/
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| 199 | /** @addtogroup I2C_Private_Constants
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| 200 | * @{
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| 201 | */
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| 202 | #define I2C_TIMEOUT_FLAG ((uint32_t)35) /* 35 ms */
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| 203 | #define I2C_TIMEOUT_ADDR_SLAVE ((uint32_t)10000) /* 10 s */
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| 204 | #define I2C_TIMEOUT_BUSY_FLAG ((uint32_t)10000) /* 10 s */
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| 205 | /**
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| 206 | * @}
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| 207 | */
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| 208 |
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| 209 | /* Private macro -------------------------------------------------------------*/
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| 210 | /* Private variables ---------------------------------------------------------*/
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| 211 | /* Private function prototypes -----------------------------------------------*/
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| 212 | /** @addtogroup I2C_Private_Functions
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| 213 | * @{
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| 214 | */
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| 215 | static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma);
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| 216 | static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma);
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| 217 | static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma);
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| 218 | static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma);
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| 219 | static void I2C_DMAMemTransmitCplt(DMA_HandleTypeDef *hdma);
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| 220 | static void I2C_DMAMemReceiveCplt(DMA_HandleTypeDef *hdma);
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| 221 | static void I2C_DMAError(DMA_HandleTypeDef *hdma);
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| 222 |
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| 223 | static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout);
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| 224 | static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout);
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| 225 | static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout);
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| 226 | static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout);
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| 227 | static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout);
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| 228 | static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout);
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| 229 |
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| 230 | static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c);
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| 231 | static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c);
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| 232 | static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c);
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| 233 | static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c);
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| 234 |
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| 235 | static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c);
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| 236 | static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c);
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| 237 | static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c);
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| 238 | static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c);
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| 239 | static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c);
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| 240 | static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c);
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| 241 | static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c);
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| 242 | /**
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| 243 | * @}
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| 244 | */
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| 245 |
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| 246 | /* Exported functions --------------------------------------------------------*/
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| 247 | /** @defgroup I2C_Exported_Functions I2C Exported Functions
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| 248 | * @{
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| 249 | */
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| 250 |
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| 251 | /** @defgroup I2C_Exported_Functions_Group1 Initialization and de-initialization functions
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| 252 | * @brief Initialization and Configuration functions
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| 253 | *
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| 254 | @verbatim
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| 255 | ===============================================================================
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| 256 | ##### Initialization and de-initialization functions #####
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| 257 | ===============================================================================
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| 258 | [..] This subsection provides a set of functions allowing to initialize and
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| 259 | de-initialize the I2Cx peripheral:
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| 260 |
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| 261 | (+) User must Implement HAL_I2C_MspInit() function in which he configures
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| 262 | all related peripherals resources (CLOCK, GPIO, DMA, IT and NVIC).
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| 263 |
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| 264 | (+) Call the function HAL_I2C_Init() to configure the selected device with
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| 265 | the selected configuration:
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| 266 | (++) Communication Speed
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| 267 | (++) Duty cycle
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| 268 | (++) Addressing mode
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| 269 | (++) Own Address 1
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| 270 | (++) Dual Addressing mode
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| 271 | (++) Own Address 2
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| 272 | (++) General call mode
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| 273 | (++) Nostretch mode
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| 274 |
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| 275 | (+) Call the function HAL_I2C_DeInit() to restore the default configuration
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| 276 | of the selected I2Cx peripheral.
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| 277 |
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| 278 | @endverbatim
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| 279 | * @{
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| 280 | */
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| 281 |
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| 282 | /**
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| 283 | * @brief Initializes the I2C according to the specified parameters
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| 284 | * in the I2C_InitTypeDef and create the associated handle.
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| 285 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
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| 286 | * the configuration information for I2C module
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| 287 | * @retval HAL status
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| 288 | */
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| 289 | HAL_StatusTypeDef HAL_I2C_Init(I2C_HandleTypeDef *hi2c)
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| 290 | {
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| 291 | uint32_t freqrange = 0;
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| 292 | uint32_t pclk1 = 0;
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| 293 |
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| 294 | /* Check the I2C handle allocation */
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| 295 | if(hi2c == NULL)
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| 296 | {
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| 297 | return HAL_ERROR;
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| 298 | }
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| 299 |
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| 300 | /* Check the parameters */
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| 301 | assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
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| 302 | assert_param(IS_I2C_CLOCK_SPEED(hi2c->Init.ClockSpeed));
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| 303 | assert_param(IS_I2C_DUTY_CYCLE(hi2c->Init.DutyCycle));
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| 304 | assert_param(IS_I2C_OWN_ADDRESS1(hi2c->Init.OwnAddress1));
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| 305 | assert_param(IS_I2C_ADDRESSING_MODE(hi2c->Init.AddressingMode));
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| 306 | assert_param(IS_I2C_DUAL_ADDRESS(hi2c->Init.DualAddressMode));
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| 307 | assert_param(IS_I2C_OWN_ADDRESS2(hi2c->Init.OwnAddress2));
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| 308 | assert_param(IS_I2C_GENERAL_CALL(hi2c->Init.GeneralCallMode));
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| 309 | assert_param(IS_I2C_NO_STRETCH(hi2c->Init.NoStretchMode));
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| 310 |
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| 311 | if(hi2c->State == HAL_I2C_STATE_RESET)
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| 312 | {
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| 313 | /* Allocate lock resource and initialize it */
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| 314 | hi2c->Lock = HAL_UNLOCKED;
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| 315 | /* Init the low level hardware : GPIO, CLOCK, NVIC */
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| 316 | HAL_I2C_MspInit(hi2c);
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| 317 | }
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| 318 |
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| 319 | hi2c->State = HAL_I2C_STATE_BUSY;
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| 320 |
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| 321 | /* Disable the selected I2C peripheral */
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| 322 | __HAL_I2C_DISABLE(hi2c);
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| 323 |
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| 324 | /* Get PCLK1 frequency */
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| 325 | pclk1 = HAL_RCC_GetPCLK1Freq();
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| 326 |
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| 327 | /* Calculate frequency range */
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| 328 | freqrange = I2C_FREQRANGE(pclk1);
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| 329 |
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| 330 | /*---------------------------- I2Cx CR2 Configuration ----------------------*/
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| 331 | /* Configure I2Cx: Frequency range */
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| 332 | hi2c->Instance->CR2 = freqrange;
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| 333 |
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| 334 | /*---------------------------- I2Cx TRISE Configuration --------------------*/
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| 335 | /* Configure I2Cx: Rise Time */
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| 336 | hi2c->Instance->TRISE = I2C_RISE_TIME(freqrange, hi2c->Init.ClockSpeed);
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| 337 |
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| 338 | /*---------------------------- I2Cx CCR Configuration ----------------------*/
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| 339 | /* Configure I2Cx: Speed */
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| 340 | hi2c->Instance->CCR = I2C_SPEED(pclk1, hi2c->Init.ClockSpeed, hi2c->Init.DutyCycle);
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| 341 |
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| 342 | /*---------------------------- I2Cx CR1 Configuration ----------------------*/
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| 343 | /* Configure I2Cx: Generalcall and NoStretch mode */
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| 344 | hi2c->Instance->CR1 = (hi2c->Init.GeneralCallMode | hi2c->Init.NoStretchMode);
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| 345 |
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| 346 | /*---------------------------- I2Cx OAR1 Configuration ---------------------*/
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| 347 | /* Configure I2Cx: Own Address1 and addressing mode */
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| 348 | hi2c->Instance->OAR1 = (hi2c->Init.AddressingMode | hi2c->Init.OwnAddress1);
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| 349 |
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| 350 | /*---------------------------- I2Cx OAR2 Configuration ---------------------*/
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| 351 | /* Configure I2Cx: Dual mode and Own Address2 */
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| 352 | hi2c->Instance->OAR2 = (hi2c->Init.DualAddressMode | hi2c->Init.OwnAddress2);
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| 353 |
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| 354 | /* Enable the selected I2C peripheral */
|
---|
| 355 | __HAL_I2C_ENABLE(hi2c);
|
---|
| 356 |
|
---|
| 357 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 358 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 359 |
|
---|
| 360 | return HAL_OK;
|
---|
| 361 | }
|
---|
| 362 |
|
---|
| 363 | /**
|
---|
| 364 | * @brief DeInitializes the I2C peripheral.
|
---|
| 365 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 366 | * the configuration information for I2C module
|
---|
| 367 | * @retval HAL status
|
---|
| 368 | */
|
---|
| 369 | HAL_StatusTypeDef HAL_I2C_DeInit(I2C_HandleTypeDef *hi2c)
|
---|
| 370 | {
|
---|
| 371 | /* Check the I2C handle allocation */
|
---|
| 372 | if(hi2c == NULL)
|
---|
| 373 | {
|
---|
| 374 | return HAL_ERROR;
|
---|
| 375 | }
|
---|
| 376 |
|
---|
| 377 | /* Check the parameters */
|
---|
| 378 | assert_param(IS_I2C_ALL_INSTANCE(hi2c->Instance));
|
---|
| 379 |
|
---|
| 380 | hi2c->State = HAL_I2C_STATE_BUSY;
|
---|
| 381 |
|
---|
| 382 | /* Disable the I2C Peripheral Clock */
|
---|
| 383 | __HAL_I2C_DISABLE(hi2c);
|
---|
| 384 |
|
---|
| 385 | /* DeInit the low level hardware: GPIO, CLOCK, NVIC */
|
---|
| 386 | HAL_I2C_MspDeInit(hi2c);
|
---|
| 387 |
|
---|
| 388 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 389 |
|
---|
| 390 | hi2c->State = HAL_I2C_STATE_RESET;
|
---|
| 391 |
|
---|
| 392 | /* Release Lock */
|
---|
| 393 | __HAL_UNLOCK(hi2c);
|
---|
| 394 |
|
---|
| 395 | return HAL_OK;
|
---|
| 396 | }
|
---|
| 397 |
|
---|
| 398 | /**
|
---|
| 399 | * @brief I2C MSP Init.
|
---|
| 400 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 401 | * the configuration information for I2C module
|
---|
| 402 | * @retval None
|
---|
| 403 | */
|
---|
| 404 | __weak void HAL_I2C_MspInit(I2C_HandleTypeDef *hi2c)
|
---|
| 405 | {
|
---|
| 406 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 407 | the HAL_I2C_MspInit could be implemented in the user file
|
---|
| 408 | */
|
---|
| 409 | }
|
---|
| 410 |
|
---|
| 411 | /**
|
---|
| 412 | * @brief I2C MSP DeInit
|
---|
| 413 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 414 | * the configuration information for I2C module
|
---|
| 415 | * @retval None
|
---|
| 416 | */
|
---|
| 417 | __weak void HAL_I2C_MspDeInit(I2C_HandleTypeDef *hi2c)
|
---|
| 418 | {
|
---|
| 419 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 420 | the HAL_I2C_MspDeInit could be implemented in the user file
|
---|
| 421 | */
|
---|
| 422 | }
|
---|
| 423 |
|
---|
| 424 | /**
|
---|
| 425 | * @}
|
---|
| 426 | */
|
---|
| 427 |
|
---|
| 428 | /** @defgroup I2C_Exported_Functions_Group2 IO operation functions
|
---|
| 429 | * @brief Data transfers functions
|
---|
| 430 | *
|
---|
| 431 | @verbatim
|
---|
| 432 | ===============================================================================
|
---|
| 433 | ##### IO operation functions #####
|
---|
| 434 | ===============================================================================
|
---|
| 435 | [..]
|
---|
| 436 | This subsection provides a set of functions allowing to manage the I2C data
|
---|
| 437 | transfers.
|
---|
| 438 |
|
---|
| 439 | (#) There are two modes of transfer:
|
---|
| 440 | (++) Blocking mode : The communication is performed in the polling mode.
|
---|
| 441 | The status of all data processing is returned by the same function
|
---|
| 442 | after finishing transfer.
|
---|
| 443 | (++) No-Blocking mode : The communication is performed using Interrupts
|
---|
| 444 | or DMA. These functions return the status of the transfer startup.
|
---|
| 445 | The end of the data processing will be indicated through the
|
---|
| 446 | dedicated I2C IRQ when using Interrupt mode or the DMA IRQ when
|
---|
| 447 | using DMA mode.
|
---|
| 448 |
|
---|
| 449 | (#) Blocking mode functions are :
|
---|
| 450 | (++) HAL_I2C_Master_Transmit()
|
---|
| 451 | (++) HAL_I2C_Master_Receive()
|
---|
| 452 | (++) HAL_I2C_Slave_Transmit()
|
---|
| 453 | (++) HAL_I2C_Slave_Receive()
|
---|
| 454 | (++) HAL_I2C_Mem_Write()
|
---|
| 455 | (++) HAL_I2C_Mem_Read()
|
---|
| 456 | (++) HAL_I2C_IsDeviceReady()
|
---|
| 457 |
|
---|
| 458 | (#) No-Blocking mode functions with Interrupt are :
|
---|
| 459 | (++) HAL_I2C_Master_Transmit_IT()
|
---|
| 460 | (++) HAL_I2C_Master_Receive_IT()
|
---|
| 461 | (++) HAL_I2C_Slave_Transmit_IT()
|
---|
| 462 | (++) HAL_I2C_Slave_Receive_IT()
|
---|
| 463 | (++) HAL_I2C_Mem_Write_IT()
|
---|
| 464 | (++) HAL_I2C_Mem_Read_IT()
|
---|
| 465 |
|
---|
| 466 | (#) No-Blocking mode functions with DMA are :
|
---|
| 467 | (++) HAL_I2C_Master_Transmit_DMA()
|
---|
| 468 | (++) HAL_I2C_Master_Receive_DMA()
|
---|
| 469 | (++) HAL_I2C_Slave_Transmit_DMA()
|
---|
| 470 | (++) HAL_I2C_Slave_Receive_DMA()
|
---|
| 471 | (++) HAL_I2C_Mem_Write_DMA()
|
---|
| 472 | (++) HAL_I2C_Mem_Read_DMA()
|
---|
| 473 |
|
---|
| 474 | (#) A set of Transfer Complete Callbacks are provided in non Blocking mode:
|
---|
| 475 | (++) HAL_I2C_MemTxCpltCallback()
|
---|
| 476 | (++) HAL_I2C_MemRxCpltCallback()
|
---|
| 477 | (++) HAL_I2C_MasterTxCpltCallback()
|
---|
| 478 | (++) HAL_I2C_MasterRxCpltCallback()
|
---|
| 479 | (++) HAL_I2C_SlaveTxCpltCallback()
|
---|
| 480 | (++) HAL_I2C_SlaveRxCpltCallback()
|
---|
| 481 | (++) HAL_I2C_ErrorCallback()
|
---|
| 482 |
|
---|
| 483 | @endverbatim
|
---|
| 484 | * @{
|
---|
| 485 | */
|
---|
| 486 |
|
---|
| 487 | /**
|
---|
| 488 | * @brief Transmits in master mode an amount of data in blocking mode.
|
---|
| 489 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 490 | * the configuration information for I2C module
|
---|
| 491 | * @param DevAddress: Target device address
|
---|
| 492 | * @param pData: Pointer to data buffer
|
---|
| 493 | * @param Size: Amount of data to be sent
|
---|
| 494 | * @param Timeout: Timeout duration
|
---|
| 495 | * @retval HAL status
|
---|
| 496 | */
|
---|
| 497 | HAL_StatusTypeDef HAL_I2C_Master_Transmit(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 498 | {
|
---|
| 499 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 500 | {
|
---|
| 501 | if((pData == NULL) || (Size == 0))
|
---|
| 502 | {
|
---|
| 503 | return HAL_ERROR;
|
---|
| 504 | }
|
---|
| 505 |
|
---|
| 506 | /* Wait until BUSY flag is reset */
|
---|
| 507 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 508 | {
|
---|
| 509 | return HAL_BUSY;
|
---|
| 510 | }
|
---|
| 511 |
|
---|
| 512 | /* Process Locked */
|
---|
| 513 | __HAL_LOCK(hi2c);
|
---|
| 514 |
|
---|
| 515 | /* Disable Pos */
|
---|
| 516 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 517 |
|
---|
| 518 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 519 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 520 |
|
---|
| 521 | /* Send Slave Address */
|
---|
| 522 | if(I2C_MasterRequestWrite(hi2c, DevAddress, Timeout) != HAL_OK)
|
---|
| 523 | {
|
---|
| 524 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 525 | {
|
---|
| 526 | /* Process Unlocked */
|
---|
| 527 | __HAL_UNLOCK(hi2c);
|
---|
| 528 | return HAL_ERROR;
|
---|
| 529 | }
|
---|
| 530 | else
|
---|
| 531 | {
|
---|
| 532 | /* Process Unlocked */
|
---|
| 533 | __HAL_UNLOCK(hi2c);
|
---|
| 534 | return HAL_TIMEOUT;
|
---|
| 535 | }
|
---|
| 536 | }
|
---|
| 537 |
|
---|
| 538 | /* Clear ADDR flag */
|
---|
| 539 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 540 |
|
---|
| 541 | while(Size > 0)
|
---|
| 542 | {
|
---|
| 543 | /* Wait until TXE flag is set */
|
---|
| 544 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 545 | {
|
---|
| 546 | return HAL_TIMEOUT;
|
---|
| 547 | }
|
---|
| 548 |
|
---|
| 549 | /* Write data to DR */
|
---|
| 550 | hi2c->Instance->DR = (*pData++);
|
---|
| 551 | Size--;
|
---|
| 552 |
|
---|
| 553 | if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
|
---|
| 554 | {
|
---|
| 555 | /* Write data to DR */
|
---|
| 556 | hi2c->Instance->DR = (*pData++);
|
---|
| 557 | Size--;
|
---|
| 558 | }
|
---|
| 559 | }
|
---|
| 560 |
|
---|
| 561 | /* Wait until TXE flag is set */
|
---|
| 562 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 563 | {
|
---|
| 564 | return HAL_TIMEOUT;
|
---|
| 565 | }
|
---|
| 566 |
|
---|
| 567 | /* Generate Stop */
|
---|
| 568 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 569 |
|
---|
| 570 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 571 |
|
---|
| 572 | /* Process Unlocked */
|
---|
| 573 | __HAL_UNLOCK(hi2c);
|
---|
| 574 |
|
---|
| 575 | return HAL_OK;
|
---|
| 576 | }
|
---|
| 577 | else
|
---|
| 578 | {
|
---|
| 579 | return HAL_BUSY;
|
---|
| 580 | }
|
---|
| 581 | }
|
---|
| 582 |
|
---|
| 583 | /**
|
---|
| 584 | * @brief Receives in master mode an amount of data in blocking mode.
|
---|
| 585 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 586 | * the configuration information for I2C module
|
---|
| 587 | * @param DevAddress: Target device address
|
---|
| 588 | * @param pData: Pointer to data buffer
|
---|
| 589 | * @param Size: Amount of data to be sent
|
---|
| 590 | * @param Timeout: Timeout duration
|
---|
| 591 | * @retval HAL status
|
---|
| 592 | */
|
---|
| 593 | HAL_StatusTypeDef HAL_I2C_Master_Receive(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 594 | {
|
---|
| 595 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 596 | {
|
---|
| 597 | if((pData == NULL) || (Size == 0))
|
---|
| 598 | {
|
---|
| 599 | return HAL_ERROR;
|
---|
| 600 | }
|
---|
| 601 |
|
---|
| 602 | /* Wait until BUSY flag is reset */
|
---|
| 603 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 604 | {
|
---|
| 605 | return HAL_BUSY;
|
---|
| 606 | }
|
---|
| 607 |
|
---|
| 608 | /* Process Locked */
|
---|
| 609 | __HAL_LOCK(hi2c);
|
---|
| 610 |
|
---|
| 611 | /* Disable Pos */
|
---|
| 612 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 613 |
|
---|
| 614 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 615 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 616 |
|
---|
| 617 | /* Send Slave Address */
|
---|
| 618 | if(I2C_MasterRequestRead(hi2c, DevAddress, Timeout) != HAL_OK)
|
---|
| 619 | {
|
---|
| 620 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 621 | {
|
---|
| 622 | /* Process Unlocked */
|
---|
| 623 | __HAL_UNLOCK(hi2c);
|
---|
| 624 | return HAL_ERROR;
|
---|
| 625 | }
|
---|
| 626 | else
|
---|
| 627 | {
|
---|
| 628 | /* Process Unlocked */
|
---|
| 629 | __HAL_UNLOCK(hi2c);
|
---|
| 630 | return HAL_TIMEOUT;
|
---|
| 631 | }
|
---|
| 632 | }
|
---|
| 633 |
|
---|
| 634 | if(Size == 1)
|
---|
| 635 | {
|
---|
| 636 | /* Disable Acknowledge */
|
---|
| 637 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 638 |
|
---|
| 639 | /* Clear ADDR flag */
|
---|
| 640 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 641 |
|
---|
| 642 | /* Generate Stop */
|
---|
| 643 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 644 | }
|
---|
| 645 | else if(Size == 2)
|
---|
| 646 | {
|
---|
| 647 | /* Disable Acknowledge */
|
---|
| 648 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 649 |
|
---|
| 650 | /* Enable Pos */
|
---|
| 651 | hi2c->Instance->CR1 |= I2C_CR1_POS;
|
---|
| 652 |
|
---|
| 653 | /* Clear ADDR flag */
|
---|
| 654 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 655 | }
|
---|
| 656 | else
|
---|
| 657 | {
|
---|
| 658 | /* Enable Acknowledge */
|
---|
| 659 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 660 |
|
---|
| 661 | /* Clear ADDR flag */
|
---|
| 662 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 663 | }
|
---|
| 664 |
|
---|
| 665 | while(Size > 0)
|
---|
| 666 | {
|
---|
| 667 | if(Size <= 3)
|
---|
| 668 | {
|
---|
| 669 | /* One byte */
|
---|
| 670 | if(Size == 1)
|
---|
| 671 | {
|
---|
| 672 | /* Wait until RXNE flag is set */
|
---|
| 673 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 674 | {
|
---|
| 675 | return HAL_TIMEOUT;
|
---|
| 676 | }
|
---|
| 677 |
|
---|
| 678 | /* Read data from DR */
|
---|
| 679 | (*pData++) = hi2c->Instance->DR;
|
---|
| 680 | Size--;
|
---|
| 681 | }
|
---|
| 682 | /* Two bytes */
|
---|
| 683 | else if(Size == 2)
|
---|
| 684 | {
|
---|
| 685 | /* Wait until BTF flag is set */
|
---|
| 686 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 687 | {
|
---|
| 688 | return HAL_TIMEOUT;
|
---|
| 689 | }
|
---|
| 690 |
|
---|
| 691 | /* Generate Stop */
|
---|
| 692 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 693 |
|
---|
| 694 | /* Read data from DR */
|
---|
| 695 | (*pData++) = hi2c->Instance->DR;
|
---|
| 696 | Size--;
|
---|
| 697 |
|
---|
| 698 | /* Read data from DR */
|
---|
| 699 | (*pData++) = hi2c->Instance->DR;
|
---|
| 700 | Size--;
|
---|
| 701 | }
|
---|
| 702 | /* 3 Last bytes */
|
---|
| 703 | else
|
---|
| 704 | {
|
---|
| 705 | /* Wait until BTF flag is set */
|
---|
| 706 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 707 | {
|
---|
| 708 | return HAL_TIMEOUT;
|
---|
| 709 | }
|
---|
| 710 |
|
---|
| 711 | /* Disable Acknowledge */
|
---|
| 712 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 713 |
|
---|
| 714 | /* Read data from DR */
|
---|
| 715 | (*pData++) = hi2c->Instance->DR;
|
---|
| 716 | Size--;
|
---|
| 717 |
|
---|
| 718 | /* Wait until BTF flag is set */
|
---|
| 719 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 720 | {
|
---|
| 721 | return HAL_TIMEOUT;
|
---|
| 722 | }
|
---|
| 723 |
|
---|
| 724 | /* Generate Stop */
|
---|
| 725 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 726 |
|
---|
| 727 | /* Read data from DR */
|
---|
| 728 | (*pData++) = hi2c->Instance->DR;
|
---|
| 729 | Size--;
|
---|
| 730 |
|
---|
| 731 | /* Read data from DR */
|
---|
| 732 | (*pData++) = hi2c->Instance->DR;
|
---|
| 733 | Size--;
|
---|
| 734 | }
|
---|
| 735 | }
|
---|
| 736 | else
|
---|
| 737 | {
|
---|
| 738 | /* Wait until RXNE flag is set */
|
---|
| 739 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 740 | {
|
---|
| 741 | return HAL_TIMEOUT;
|
---|
| 742 | }
|
---|
| 743 |
|
---|
| 744 | /* Read data from DR */
|
---|
| 745 | (*pData++) = hi2c->Instance->DR;
|
---|
| 746 | Size--;
|
---|
| 747 |
|
---|
| 748 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
|
---|
| 749 | {
|
---|
| 750 | /* Read data from DR */
|
---|
| 751 | (*pData++) = hi2c->Instance->DR;
|
---|
| 752 | Size--;
|
---|
| 753 | }
|
---|
| 754 | }
|
---|
| 755 | }
|
---|
| 756 |
|
---|
| 757 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 758 |
|
---|
| 759 | /* Process Unlocked */
|
---|
| 760 | __HAL_UNLOCK(hi2c);
|
---|
| 761 |
|
---|
| 762 | return HAL_OK;
|
---|
| 763 | }
|
---|
| 764 | else
|
---|
| 765 | {
|
---|
| 766 | return HAL_BUSY;
|
---|
| 767 | }
|
---|
| 768 | }
|
---|
| 769 |
|
---|
| 770 | /**
|
---|
| 771 | * @brief Transmits in slave mode an amount of data in blocking mode.
|
---|
| 772 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 773 | * the configuration information for I2C module
|
---|
| 774 | * @param pData: Pointer to data buffer
|
---|
| 775 | * @param Size: Amount of data to be sent
|
---|
| 776 | * @param Timeout: Timeout duration
|
---|
| 777 | * @retval HAL status
|
---|
| 778 | */
|
---|
| 779 | HAL_StatusTypeDef HAL_I2C_Slave_Transmit(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 780 | {
|
---|
| 781 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 782 | {
|
---|
| 783 | if((pData == NULL) || (Size == 0))
|
---|
| 784 | {
|
---|
| 785 | return HAL_ERROR;
|
---|
| 786 | }
|
---|
| 787 |
|
---|
| 788 | /* Wait until BUSY flag is reset */
|
---|
| 789 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 790 | {
|
---|
| 791 | return HAL_BUSY;
|
---|
| 792 | }
|
---|
| 793 |
|
---|
| 794 | /* Process Locked */
|
---|
| 795 | __HAL_LOCK(hi2c);
|
---|
| 796 |
|
---|
| 797 | /* Disable Pos */
|
---|
| 798 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 799 |
|
---|
| 800 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 801 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 802 |
|
---|
| 803 | /* Enable Address Acknowledge */
|
---|
| 804 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 805 |
|
---|
| 806 | /* Wait until ADDR flag is set */
|
---|
| 807 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
|
---|
| 808 | {
|
---|
| 809 | return HAL_TIMEOUT;
|
---|
| 810 | }
|
---|
| 811 |
|
---|
| 812 | /* Clear ADDR flag */
|
---|
| 813 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 814 |
|
---|
| 815 | /* If 10bit addressing mode is selected */
|
---|
| 816 | if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_10BIT)
|
---|
| 817 | {
|
---|
| 818 | /* Wait until ADDR flag is set */
|
---|
| 819 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
|
---|
| 820 | {
|
---|
| 821 | return HAL_TIMEOUT;
|
---|
| 822 | }
|
---|
| 823 |
|
---|
| 824 | /* Clear ADDR flag */
|
---|
| 825 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 826 | }
|
---|
| 827 |
|
---|
| 828 | while(Size > 0)
|
---|
| 829 | {
|
---|
| 830 | /* Wait until TXE flag is set */
|
---|
| 831 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 832 | {
|
---|
| 833 | return HAL_TIMEOUT;
|
---|
| 834 | }
|
---|
| 835 |
|
---|
| 836 | /* Write data to DR */
|
---|
| 837 | hi2c->Instance->DR = (*pData++);
|
---|
| 838 | Size--;
|
---|
| 839 |
|
---|
| 840 | if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
|
---|
| 841 | {
|
---|
| 842 | /* Write data to DR */
|
---|
| 843 | hi2c->Instance->DR = (*pData++);
|
---|
| 844 | Size--;
|
---|
| 845 | }
|
---|
| 846 | }
|
---|
| 847 |
|
---|
| 848 | /* Wait until AF flag is set */
|
---|
| 849 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, Timeout) != HAL_OK)
|
---|
| 850 | {
|
---|
| 851 | return HAL_TIMEOUT;
|
---|
| 852 | }
|
---|
| 853 |
|
---|
| 854 | /* Clear AF flag */
|
---|
| 855 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 856 |
|
---|
| 857 | /* Disable Address Acknowledge */
|
---|
| 858 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 859 |
|
---|
| 860 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 861 |
|
---|
| 862 | /* Process Unlocked */
|
---|
| 863 | __HAL_UNLOCK(hi2c);
|
---|
| 864 |
|
---|
| 865 | return HAL_OK;
|
---|
| 866 | }
|
---|
| 867 | else
|
---|
| 868 | {
|
---|
| 869 | return HAL_BUSY;
|
---|
| 870 | }
|
---|
| 871 | }
|
---|
| 872 |
|
---|
| 873 | /**
|
---|
| 874 | * @brief Receive in slave mode an amount of data in blocking mode
|
---|
| 875 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 876 | * the configuration information for I2C module
|
---|
| 877 | * @param pData: Pointer to data buffer
|
---|
| 878 | * @param Size: Amount of data to be sent
|
---|
| 879 | * @param Timeout: Timeout duration
|
---|
| 880 | * @retval HAL status
|
---|
| 881 | */
|
---|
| 882 | HAL_StatusTypeDef HAL_I2C_Slave_Receive(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 883 | {
|
---|
| 884 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 885 | {
|
---|
| 886 | if((pData == NULL) || (Size == 0))
|
---|
| 887 | {
|
---|
| 888 | return HAL_ERROR;
|
---|
| 889 | }
|
---|
| 890 |
|
---|
| 891 | /* Wait until BUSY flag is reset */
|
---|
| 892 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 893 | {
|
---|
| 894 | return HAL_BUSY;
|
---|
| 895 | }
|
---|
| 896 |
|
---|
| 897 | /* Process Locked */
|
---|
| 898 | __HAL_LOCK(hi2c);
|
---|
| 899 |
|
---|
| 900 | /* Disable Pos */
|
---|
| 901 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 902 |
|
---|
| 903 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 904 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 905 |
|
---|
| 906 | /* Enable Address Acknowledge */
|
---|
| 907 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 908 |
|
---|
| 909 | /* Wait until ADDR flag is set */
|
---|
| 910 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, Timeout) != HAL_OK)
|
---|
| 911 | {
|
---|
| 912 | return HAL_TIMEOUT;
|
---|
| 913 | }
|
---|
| 914 |
|
---|
| 915 | /* Clear ADDR flag */
|
---|
| 916 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 917 |
|
---|
| 918 | while(Size > 0)
|
---|
| 919 | {
|
---|
| 920 | /* Wait until RXNE flag is set */
|
---|
| 921 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 922 | {
|
---|
| 923 | return HAL_TIMEOUT;
|
---|
| 924 | }
|
---|
| 925 |
|
---|
| 926 | /* Read data from DR */
|
---|
| 927 | (*pData++) = hi2c->Instance->DR;
|
---|
| 928 | Size--;
|
---|
| 929 |
|
---|
| 930 | if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
|
---|
| 931 | {
|
---|
| 932 | /* Read data from DR */
|
---|
| 933 | (*pData++) = hi2c->Instance->DR;
|
---|
| 934 | Size--;
|
---|
| 935 | }
|
---|
| 936 | }
|
---|
| 937 |
|
---|
| 938 | /* Wait until STOP flag is set */
|
---|
| 939 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, Timeout) != HAL_OK)
|
---|
| 940 | {
|
---|
| 941 | return HAL_TIMEOUT;
|
---|
| 942 | }
|
---|
| 943 |
|
---|
| 944 | /* Clear STOP flag */
|
---|
| 945 | __HAL_I2C_CLEAR_STOPFLAG(hi2c);
|
---|
| 946 |
|
---|
| 947 | /* Disable Address Acknowledge */
|
---|
| 948 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 949 |
|
---|
| 950 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 951 |
|
---|
| 952 | /* Process Unlocked */
|
---|
| 953 | __HAL_UNLOCK(hi2c);
|
---|
| 954 |
|
---|
| 955 | return HAL_OK;
|
---|
| 956 | }
|
---|
| 957 | else
|
---|
| 958 | {
|
---|
| 959 | return HAL_BUSY;
|
---|
| 960 | }
|
---|
| 961 | }
|
---|
| 962 |
|
---|
| 963 | /**
|
---|
| 964 | * @brief Transmit in master mode an amount of data in no-blocking mode with Interrupt
|
---|
| 965 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 966 | * the configuration information for I2C module
|
---|
| 967 | * @param DevAddress: Target device address
|
---|
| 968 | * @param pData: Pointer to data buffer
|
---|
| 969 | * @param Size: Amount of data to be sent
|
---|
| 970 | * @retval HAL status
|
---|
| 971 | */
|
---|
| 972 | HAL_StatusTypeDef HAL_I2C_Master_Transmit_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
|
---|
| 973 | {
|
---|
| 974 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 975 | {
|
---|
| 976 | if((pData == NULL) || (Size == 0))
|
---|
| 977 | {
|
---|
| 978 | return HAL_ERROR;
|
---|
| 979 | }
|
---|
| 980 |
|
---|
| 981 | /* Wait until BUSY flag is reset */
|
---|
| 982 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 983 | {
|
---|
| 984 | return HAL_BUSY;
|
---|
| 985 | }
|
---|
| 986 |
|
---|
| 987 | /* Process Locked */
|
---|
| 988 | __HAL_LOCK(hi2c);
|
---|
| 989 |
|
---|
| 990 | /* Disable Pos */
|
---|
| 991 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 992 |
|
---|
| 993 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 994 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 995 |
|
---|
| 996 | hi2c->pBuffPtr = pData;
|
---|
| 997 | hi2c->XferSize = Size;
|
---|
| 998 | hi2c->XferCount = Size;
|
---|
| 999 |
|
---|
| 1000 | /* Send Slave Address */
|
---|
| 1001 | if(I2C_MasterRequestWrite(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1002 | {
|
---|
| 1003 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1004 | {
|
---|
| 1005 | /* Process Unlocked */
|
---|
| 1006 | __HAL_UNLOCK(hi2c);
|
---|
| 1007 | return HAL_ERROR;
|
---|
| 1008 | }
|
---|
| 1009 | else
|
---|
| 1010 | {
|
---|
| 1011 | /* Process Unlocked */
|
---|
| 1012 | __HAL_UNLOCK(hi2c);
|
---|
| 1013 | return HAL_TIMEOUT;
|
---|
| 1014 | }
|
---|
| 1015 | }
|
---|
| 1016 |
|
---|
| 1017 | /* Clear ADDR flag */
|
---|
| 1018 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1019 |
|
---|
| 1020 | /* Process Unlocked */
|
---|
| 1021 | __HAL_UNLOCK(hi2c);
|
---|
| 1022 |
|
---|
| 1023 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 1024 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 1025 | process unlock */
|
---|
| 1026 |
|
---|
| 1027 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 1028 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 1029 |
|
---|
| 1030 | return HAL_OK;
|
---|
| 1031 | }
|
---|
| 1032 | else
|
---|
| 1033 | {
|
---|
| 1034 | return HAL_BUSY;
|
---|
| 1035 | }
|
---|
| 1036 | }
|
---|
| 1037 |
|
---|
| 1038 | /**
|
---|
| 1039 | * @brief Receive in master mode an amount of data in no-blocking mode with Interrupt
|
---|
| 1040 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1041 | * the configuration information for I2C module
|
---|
| 1042 | * @param DevAddress: Target device address
|
---|
| 1043 | * @param pData: Pointer to data buffer
|
---|
| 1044 | * @param Size: Amount of data to be sent
|
---|
| 1045 | * @retval HAL status
|
---|
| 1046 | */
|
---|
| 1047 | HAL_StatusTypeDef HAL_I2C_Master_Receive_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
|
---|
| 1048 | {
|
---|
| 1049 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1050 | {
|
---|
| 1051 | if((pData == NULL) || (Size == 0))
|
---|
| 1052 | {
|
---|
| 1053 | return HAL_ERROR;
|
---|
| 1054 | }
|
---|
| 1055 |
|
---|
| 1056 | /* Wait until BUSY flag is reset */
|
---|
| 1057 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1058 | {
|
---|
| 1059 | return HAL_BUSY;
|
---|
| 1060 | }
|
---|
| 1061 |
|
---|
| 1062 | /* Process Locked */
|
---|
| 1063 | __HAL_LOCK(hi2c);
|
---|
| 1064 |
|
---|
| 1065 | /* Disable Pos */
|
---|
| 1066 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1067 |
|
---|
| 1068 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 1069 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1070 |
|
---|
| 1071 | hi2c->pBuffPtr = pData;
|
---|
| 1072 | hi2c->XferSize = Size;
|
---|
| 1073 | hi2c->XferCount = Size;
|
---|
| 1074 |
|
---|
| 1075 | /* Send Slave Address */
|
---|
| 1076 | if(I2C_MasterRequestRead(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1077 | {
|
---|
| 1078 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1079 | {
|
---|
| 1080 | /* Process Unlocked */
|
---|
| 1081 | __HAL_UNLOCK(hi2c);
|
---|
| 1082 | return HAL_ERROR;
|
---|
| 1083 | }
|
---|
| 1084 | else
|
---|
| 1085 | {
|
---|
| 1086 | /* Process Unlocked */
|
---|
| 1087 | __HAL_UNLOCK(hi2c);
|
---|
| 1088 | return HAL_TIMEOUT;
|
---|
| 1089 | }
|
---|
| 1090 | }
|
---|
| 1091 |
|
---|
| 1092 | if(hi2c->XferCount == 1)
|
---|
| 1093 | {
|
---|
| 1094 | /* Disable Acknowledge */
|
---|
| 1095 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1096 |
|
---|
| 1097 | /* Clear ADDR flag */
|
---|
| 1098 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1099 |
|
---|
| 1100 | /* Generate Stop */
|
---|
| 1101 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 1102 | }
|
---|
| 1103 | else if(hi2c->XferCount == 2)
|
---|
| 1104 | {
|
---|
| 1105 | /* Disable Acknowledge */
|
---|
| 1106 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1107 |
|
---|
| 1108 | /* Enable Pos */
|
---|
| 1109 | hi2c->Instance->CR1 |= I2C_CR1_POS;
|
---|
| 1110 |
|
---|
| 1111 | /* Clear ADDR flag */
|
---|
| 1112 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1113 | }
|
---|
| 1114 | else
|
---|
| 1115 | {
|
---|
| 1116 | /* Enable Acknowledge */
|
---|
| 1117 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 1118 |
|
---|
| 1119 | /* Clear ADDR flag */
|
---|
| 1120 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1121 | }
|
---|
| 1122 |
|
---|
| 1123 | /* Process Unlocked */
|
---|
| 1124 | __HAL_UNLOCK(hi2c);
|
---|
| 1125 |
|
---|
| 1126 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 1127 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 1128 | process unlock */
|
---|
| 1129 |
|
---|
| 1130 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 1131 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 1132 |
|
---|
| 1133 | return HAL_OK;
|
---|
| 1134 | }
|
---|
| 1135 | else
|
---|
| 1136 | {
|
---|
| 1137 | return HAL_BUSY;
|
---|
| 1138 | }
|
---|
| 1139 | }
|
---|
| 1140 |
|
---|
| 1141 | /**
|
---|
| 1142 | * @brief Transmit in slave mode an amount of data in no-blocking mode with Interrupt
|
---|
| 1143 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1144 | * the configuration information for I2C module
|
---|
| 1145 | * @param pData: Pointer to data buffer
|
---|
| 1146 | * @param Size: Amount of data to be sent
|
---|
| 1147 | * @retval HAL status
|
---|
| 1148 | */
|
---|
| 1149 | HAL_StatusTypeDef HAL_I2C_Slave_Transmit_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
|
---|
| 1150 | {
|
---|
| 1151 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1152 | {
|
---|
| 1153 | if((pData == NULL) || (Size == 0))
|
---|
| 1154 | {
|
---|
| 1155 | return HAL_ERROR;
|
---|
| 1156 | }
|
---|
| 1157 |
|
---|
| 1158 | /* Wait until BUSY flag is reset */
|
---|
| 1159 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1160 | {
|
---|
| 1161 | return HAL_BUSY;
|
---|
| 1162 | }
|
---|
| 1163 |
|
---|
| 1164 | /* Process Locked */
|
---|
| 1165 | __HAL_LOCK(hi2c);
|
---|
| 1166 |
|
---|
| 1167 | /* Disable Pos */
|
---|
| 1168 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1169 |
|
---|
| 1170 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 1171 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1172 |
|
---|
| 1173 | hi2c->pBuffPtr = pData;
|
---|
| 1174 | hi2c->XferSize = Size;
|
---|
| 1175 | hi2c->XferCount = Size;
|
---|
| 1176 |
|
---|
| 1177 | /* Enable Address Acknowledge */
|
---|
| 1178 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 1179 |
|
---|
| 1180 | /* Process Unlocked */
|
---|
| 1181 | __HAL_UNLOCK(hi2c);
|
---|
| 1182 |
|
---|
| 1183 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 1184 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 1185 | process unlock */
|
---|
| 1186 |
|
---|
| 1187 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 1188 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 1189 |
|
---|
| 1190 | return HAL_OK;
|
---|
| 1191 | }
|
---|
| 1192 | else
|
---|
| 1193 | {
|
---|
| 1194 | return HAL_BUSY;
|
---|
| 1195 | }
|
---|
| 1196 | }
|
---|
| 1197 |
|
---|
| 1198 | /**
|
---|
| 1199 | * @brief Receive in slave mode an amount of data in no-blocking mode with Interrupt
|
---|
| 1200 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1201 | * the configuration information for I2C module
|
---|
| 1202 | * @param pData: Pointer to data buffer
|
---|
| 1203 | * @param Size: Amount of data to be sent
|
---|
| 1204 | * @retval HAL status
|
---|
| 1205 | */
|
---|
| 1206 | HAL_StatusTypeDef HAL_I2C_Slave_Receive_IT(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
|
---|
| 1207 | {
|
---|
| 1208 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1209 | {
|
---|
| 1210 | if((pData == NULL) || (Size == 0))
|
---|
| 1211 | {
|
---|
| 1212 | return HAL_ERROR;
|
---|
| 1213 | }
|
---|
| 1214 |
|
---|
| 1215 | /* Wait until BUSY flag is reset */
|
---|
| 1216 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1217 | {
|
---|
| 1218 | return HAL_BUSY;
|
---|
| 1219 | }
|
---|
| 1220 |
|
---|
| 1221 | /* Process Locked */
|
---|
| 1222 | __HAL_LOCK(hi2c);
|
---|
| 1223 |
|
---|
| 1224 | /* Disable Pos */
|
---|
| 1225 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1226 |
|
---|
| 1227 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 1228 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1229 |
|
---|
| 1230 | hi2c->pBuffPtr = pData;
|
---|
| 1231 | hi2c->XferSize = Size;
|
---|
| 1232 | hi2c->XferCount = Size;
|
---|
| 1233 |
|
---|
| 1234 | /* Enable Address Acknowledge */
|
---|
| 1235 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 1236 |
|
---|
| 1237 | /* Process Unlocked */
|
---|
| 1238 | __HAL_UNLOCK(hi2c);
|
---|
| 1239 |
|
---|
| 1240 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 1241 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 1242 | process unlock */
|
---|
| 1243 |
|
---|
| 1244 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 1245 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 1246 |
|
---|
| 1247 | return HAL_OK;
|
---|
| 1248 | }
|
---|
| 1249 | else
|
---|
| 1250 | {
|
---|
| 1251 | return HAL_BUSY;
|
---|
| 1252 | }
|
---|
| 1253 | }
|
---|
| 1254 |
|
---|
| 1255 | /**
|
---|
| 1256 | * @brief Transmit in master mode an amount of data in no-blocking mode with DMA
|
---|
| 1257 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1258 | * the configuration information for I2C module
|
---|
| 1259 | * @param DevAddress: Target device address
|
---|
| 1260 | * @param pData: Pointer to data buffer
|
---|
| 1261 | * @param Size: Amount of data to be sent
|
---|
| 1262 | * @retval HAL status
|
---|
| 1263 | */
|
---|
| 1264 | HAL_StatusTypeDef HAL_I2C_Master_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
|
---|
| 1265 | {
|
---|
| 1266 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1267 | {
|
---|
| 1268 | if((pData == NULL) || (Size == 0))
|
---|
| 1269 | {
|
---|
| 1270 | return HAL_ERROR;
|
---|
| 1271 | }
|
---|
| 1272 |
|
---|
| 1273 | /* Wait until BUSY flag is reset */
|
---|
| 1274 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1275 | {
|
---|
| 1276 | return HAL_BUSY;
|
---|
| 1277 | }
|
---|
| 1278 |
|
---|
| 1279 | /* Process Locked */
|
---|
| 1280 | __HAL_LOCK(hi2c);
|
---|
| 1281 |
|
---|
| 1282 | /* Disable Pos */
|
---|
| 1283 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1284 |
|
---|
| 1285 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 1286 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1287 |
|
---|
| 1288 | hi2c->pBuffPtr = pData;
|
---|
| 1289 | hi2c->XferSize = Size;
|
---|
| 1290 | hi2c->XferCount = Size;
|
---|
| 1291 |
|
---|
| 1292 | /* Set the I2C DMA transfer complete callback */
|
---|
| 1293 | hi2c->hdmatx->XferCpltCallback = I2C_DMAMasterTransmitCplt;
|
---|
| 1294 |
|
---|
| 1295 | /* Set the DMA error callback */
|
---|
| 1296 | hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
|
---|
| 1297 |
|
---|
| 1298 | /* Enable the DMA Stream */
|
---|
| 1299 | HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
|
---|
| 1300 |
|
---|
| 1301 | /* Send Slave Address */
|
---|
| 1302 | if(I2C_MasterRequestWrite(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1303 | {
|
---|
| 1304 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1305 | {
|
---|
| 1306 | /* Process Unlocked */
|
---|
| 1307 | __HAL_UNLOCK(hi2c);
|
---|
| 1308 | return HAL_ERROR;
|
---|
| 1309 | }
|
---|
| 1310 | else
|
---|
| 1311 | {
|
---|
| 1312 | /* Process Unlocked */
|
---|
| 1313 | __HAL_UNLOCK(hi2c);
|
---|
| 1314 | return HAL_TIMEOUT;
|
---|
| 1315 | }
|
---|
| 1316 | }
|
---|
| 1317 |
|
---|
| 1318 | /* Enable DMA Request */
|
---|
| 1319 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 1320 |
|
---|
| 1321 | /* Clear ADDR flag */
|
---|
| 1322 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1323 |
|
---|
| 1324 | /* Process Unlocked */
|
---|
| 1325 | __HAL_UNLOCK(hi2c);
|
---|
| 1326 |
|
---|
| 1327 | return HAL_OK;
|
---|
| 1328 | }
|
---|
| 1329 | else
|
---|
| 1330 | {
|
---|
| 1331 | return HAL_BUSY;
|
---|
| 1332 | }
|
---|
| 1333 | }
|
---|
| 1334 |
|
---|
| 1335 | /**
|
---|
| 1336 | * @brief Receive in master mode an amount of data in no-blocking mode with DMA
|
---|
| 1337 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1338 | * the configuration information for I2C module
|
---|
| 1339 | * @param DevAddress: Target device address
|
---|
| 1340 | * @param pData: Pointer to data buffer
|
---|
| 1341 | * @param Size: Amount of data to be sent
|
---|
| 1342 | * @retval HAL status
|
---|
| 1343 | */
|
---|
| 1344 | HAL_StatusTypeDef HAL_I2C_Master_Receive_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint8_t *pData, uint16_t Size)
|
---|
| 1345 | {
|
---|
| 1346 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1347 | {
|
---|
| 1348 | if((pData == NULL) || (Size == 0))
|
---|
| 1349 | {
|
---|
| 1350 | return HAL_ERROR;
|
---|
| 1351 | }
|
---|
| 1352 |
|
---|
| 1353 | /* Wait until BUSY flag is reset */
|
---|
| 1354 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1355 | {
|
---|
| 1356 | return HAL_BUSY;
|
---|
| 1357 | }
|
---|
| 1358 |
|
---|
| 1359 | /* Process Locked */
|
---|
| 1360 | __HAL_LOCK(hi2c);
|
---|
| 1361 |
|
---|
| 1362 | /* Disable Pos */
|
---|
| 1363 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1364 |
|
---|
| 1365 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 1366 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1367 |
|
---|
| 1368 | hi2c->pBuffPtr = pData;
|
---|
| 1369 | hi2c->XferSize = Size;
|
---|
| 1370 | hi2c->XferCount = Size;
|
---|
| 1371 |
|
---|
| 1372 | /* Set the I2C DMA transfer complete callback */
|
---|
| 1373 | hi2c->hdmarx->XferCpltCallback = I2C_DMAMasterReceiveCplt;
|
---|
| 1374 |
|
---|
| 1375 | /* Set the DMA error callback */
|
---|
| 1376 | hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
|
---|
| 1377 |
|
---|
| 1378 | /* Enable the DMA Stream */
|
---|
| 1379 | HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
|
---|
| 1380 |
|
---|
| 1381 | /* Send Slave Address */
|
---|
| 1382 | if(I2C_MasterRequestRead(hi2c, DevAddress, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1383 | {
|
---|
| 1384 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1385 | {
|
---|
| 1386 | /* Process Unlocked */
|
---|
| 1387 | __HAL_UNLOCK(hi2c);
|
---|
| 1388 | return HAL_ERROR;
|
---|
| 1389 | }
|
---|
| 1390 | else
|
---|
| 1391 | {
|
---|
| 1392 | /* Process Unlocked */
|
---|
| 1393 | __HAL_UNLOCK(hi2c);
|
---|
| 1394 | return HAL_TIMEOUT;
|
---|
| 1395 | }
|
---|
| 1396 | }
|
---|
| 1397 |
|
---|
| 1398 | if(Size == 1)
|
---|
| 1399 | {
|
---|
| 1400 | /* Disable Acknowledge */
|
---|
| 1401 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1402 | }
|
---|
| 1403 | else
|
---|
| 1404 | {
|
---|
| 1405 | /* Enable Last DMA bit */
|
---|
| 1406 | hi2c->Instance->CR2 |= I2C_CR2_LAST;
|
---|
| 1407 | }
|
---|
| 1408 |
|
---|
| 1409 | /* Enable DMA Request */
|
---|
| 1410 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 1411 |
|
---|
| 1412 | /* Clear ADDR flag */
|
---|
| 1413 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1414 |
|
---|
| 1415 | /* Process Unlocked */
|
---|
| 1416 | __HAL_UNLOCK(hi2c);
|
---|
| 1417 |
|
---|
| 1418 | return HAL_OK;
|
---|
| 1419 | }
|
---|
| 1420 | else
|
---|
| 1421 | {
|
---|
| 1422 | return HAL_BUSY;
|
---|
| 1423 | }
|
---|
| 1424 | }
|
---|
| 1425 |
|
---|
| 1426 | /**
|
---|
| 1427 | * @brief Transmit in slave mode an amount of data in no-blocking mode with DMA
|
---|
| 1428 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1429 | * the configuration information for I2C module
|
---|
| 1430 | * @param pData: Pointer to data buffer
|
---|
| 1431 | * @param Size: Amount of data to be sent
|
---|
| 1432 | * @retval HAL status
|
---|
| 1433 | */
|
---|
| 1434 | HAL_StatusTypeDef HAL_I2C_Slave_Transmit_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
|
---|
| 1435 | {
|
---|
| 1436 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1437 | {
|
---|
| 1438 | if((pData == NULL) || (Size == 0))
|
---|
| 1439 | {
|
---|
| 1440 | return HAL_ERROR;
|
---|
| 1441 | }
|
---|
| 1442 |
|
---|
| 1443 | /* Wait until BUSY flag is reset */
|
---|
| 1444 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1445 | {
|
---|
| 1446 | return HAL_BUSY;
|
---|
| 1447 | }
|
---|
| 1448 |
|
---|
| 1449 | /* Process Locked */
|
---|
| 1450 | __HAL_LOCK(hi2c);
|
---|
| 1451 |
|
---|
| 1452 | /* Disable Pos */
|
---|
| 1453 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1454 |
|
---|
| 1455 | hi2c->State = HAL_I2C_STATE_BUSY_TX;
|
---|
| 1456 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1457 |
|
---|
| 1458 | hi2c->pBuffPtr = pData;
|
---|
| 1459 | hi2c->XferSize = Size;
|
---|
| 1460 | hi2c->XferCount = Size;
|
---|
| 1461 |
|
---|
| 1462 | /* Set the I2C DMA transfer complete callback */
|
---|
| 1463 | hi2c->hdmatx->XferCpltCallback = I2C_DMASlaveTransmitCplt;
|
---|
| 1464 |
|
---|
| 1465 | /* Set the DMA error callback */
|
---|
| 1466 | hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
|
---|
| 1467 |
|
---|
| 1468 | /* Enable the DMA Stream */
|
---|
| 1469 | HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
|
---|
| 1470 |
|
---|
| 1471 | /* Enable DMA Request */
|
---|
| 1472 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 1473 |
|
---|
| 1474 | /* Enable Address Acknowledge */
|
---|
| 1475 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 1476 |
|
---|
| 1477 | /* Wait until ADDR flag is set */
|
---|
| 1478 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
|
---|
| 1479 | {
|
---|
| 1480 | return HAL_TIMEOUT;
|
---|
| 1481 | }
|
---|
| 1482 |
|
---|
| 1483 | /* If 7bit addressing mode is selected */
|
---|
| 1484 | if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
|
---|
| 1485 | {
|
---|
| 1486 | /* Clear ADDR flag */
|
---|
| 1487 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1488 | }
|
---|
| 1489 | else
|
---|
| 1490 | {
|
---|
| 1491 | /* Clear ADDR flag */
|
---|
| 1492 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1493 |
|
---|
| 1494 | /* Wait until ADDR flag is set */
|
---|
| 1495 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
|
---|
| 1496 | {
|
---|
| 1497 | return HAL_TIMEOUT;
|
---|
| 1498 | }
|
---|
| 1499 |
|
---|
| 1500 | /* Clear ADDR flag */
|
---|
| 1501 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1502 | }
|
---|
| 1503 |
|
---|
| 1504 | /* Process Unlocked */
|
---|
| 1505 | __HAL_UNLOCK(hi2c);
|
---|
| 1506 |
|
---|
| 1507 | return HAL_OK;
|
---|
| 1508 | }
|
---|
| 1509 | else
|
---|
| 1510 | {
|
---|
| 1511 | return HAL_BUSY;
|
---|
| 1512 | }
|
---|
| 1513 | }
|
---|
| 1514 |
|
---|
| 1515 | /**
|
---|
| 1516 | * @brief Receive in slave mode an amount of data in no-blocking mode with DMA
|
---|
| 1517 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1518 | * the configuration information for I2C module
|
---|
| 1519 | * @param pData: Pointer to data buffer
|
---|
| 1520 | * @param Size: Amount of data to be sent
|
---|
| 1521 | * @retval HAL status
|
---|
| 1522 | */
|
---|
| 1523 | HAL_StatusTypeDef HAL_I2C_Slave_Receive_DMA(I2C_HandleTypeDef *hi2c, uint8_t *pData, uint16_t Size)
|
---|
| 1524 | {
|
---|
| 1525 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1526 | {
|
---|
| 1527 | if((pData == NULL) || (Size == 0))
|
---|
| 1528 | {
|
---|
| 1529 | return HAL_ERROR;
|
---|
| 1530 | }
|
---|
| 1531 |
|
---|
| 1532 | /* Wait until BUSY flag is reset */
|
---|
| 1533 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1534 | {
|
---|
| 1535 | return HAL_BUSY;
|
---|
| 1536 | }
|
---|
| 1537 |
|
---|
| 1538 | /* Process Locked */
|
---|
| 1539 | __HAL_LOCK(hi2c);
|
---|
| 1540 |
|
---|
| 1541 | /* Disable Pos */
|
---|
| 1542 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1543 |
|
---|
| 1544 | hi2c->State = HAL_I2C_STATE_BUSY_RX;
|
---|
| 1545 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1546 |
|
---|
| 1547 | hi2c->pBuffPtr = pData;
|
---|
| 1548 | hi2c->XferSize = Size;
|
---|
| 1549 | hi2c->XferCount = Size;
|
---|
| 1550 |
|
---|
| 1551 | /* Set the I2C DMA transfer complete callback */
|
---|
| 1552 | hi2c->hdmarx->XferCpltCallback = I2C_DMASlaveReceiveCplt;
|
---|
| 1553 |
|
---|
| 1554 | /* Set the DMA error callback */
|
---|
| 1555 | hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
|
---|
| 1556 |
|
---|
| 1557 | /* Enable the DMA Stream */
|
---|
| 1558 | HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
|
---|
| 1559 |
|
---|
| 1560 | /* Enable DMA Request */
|
---|
| 1561 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 1562 |
|
---|
| 1563 | /* Enable Address Acknowledge */
|
---|
| 1564 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 1565 |
|
---|
| 1566 | /* Wait until ADDR flag is set */
|
---|
| 1567 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, RESET, I2C_TIMEOUT_ADDR_SLAVE) != HAL_OK)
|
---|
| 1568 | {
|
---|
| 1569 | return HAL_TIMEOUT;
|
---|
| 1570 | }
|
---|
| 1571 |
|
---|
| 1572 | /* Clear ADDR flag */
|
---|
| 1573 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1574 |
|
---|
| 1575 | /* Process Unlocked */
|
---|
| 1576 | __HAL_UNLOCK(hi2c);
|
---|
| 1577 |
|
---|
| 1578 | return HAL_OK;
|
---|
| 1579 | }
|
---|
| 1580 | else
|
---|
| 1581 | {
|
---|
| 1582 | return HAL_BUSY;
|
---|
| 1583 | }
|
---|
| 1584 | }
|
---|
| 1585 | /**
|
---|
| 1586 | * @brief Write an amount of data in blocking mode to a specific memory address
|
---|
| 1587 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1588 | * the configuration information for I2C module
|
---|
| 1589 | * @param DevAddress: Target device address
|
---|
| 1590 | * @param MemAddress: Internal memory address
|
---|
| 1591 | * @param MemAddSize: Size of internal memory address
|
---|
| 1592 | * @param pData: Pointer to data buffer
|
---|
| 1593 | * @param Size: Amount of data to be sent
|
---|
| 1594 | * @param Timeout: Timeout duration
|
---|
| 1595 | * @retval HAL status
|
---|
| 1596 | */
|
---|
| 1597 | HAL_StatusTypeDef HAL_I2C_Mem_Write(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 1598 | {
|
---|
| 1599 | /* Check the parameters */
|
---|
| 1600 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 1601 |
|
---|
| 1602 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1603 | {
|
---|
| 1604 | if((pData == NULL) || (Size == 0))
|
---|
| 1605 | {
|
---|
| 1606 | return HAL_ERROR;
|
---|
| 1607 | }
|
---|
| 1608 |
|
---|
| 1609 | /* Wait until BUSY flag is reset */
|
---|
| 1610 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1611 | {
|
---|
| 1612 | return HAL_BUSY;
|
---|
| 1613 | }
|
---|
| 1614 |
|
---|
| 1615 | /* Process Locked */
|
---|
| 1616 | __HAL_LOCK(hi2c);
|
---|
| 1617 |
|
---|
| 1618 | /* Disable Pos */
|
---|
| 1619 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1620 |
|
---|
| 1621 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
|
---|
| 1622 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1623 |
|
---|
| 1624 | /* Send Slave Address and Memory Address */
|
---|
| 1625 | if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, Timeout) != HAL_OK)
|
---|
| 1626 | {
|
---|
| 1627 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1628 | {
|
---|
| 1629 | /* Process Unlocked */
|
---|
| 1630 | __HAL_UNLOCK(hi2c);
|
---|
| 1631 | return HAL_ERROR;
|
---|
| 1632 | }
|
---|
| 1633 | else
|
---|
| 1634 | {
|
---|
| 1635 | /* Process Unlocked */
|
---|
| 1636 | __HAL_UNLOCK(hi2c);
|
---|
| 1637 | return HAL_TIMEOUT;
|
---|
| 1638 | }
|
---|
| 1639 | }
|
---|
| 1640 |
|
---|
| 1641 | while(Size > 0)
|
---|
| 1642 | {
|
---|
| 1643 | /* Wait until TXE flag is set */
|
---|
| 1644 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 1645 | {
|
---|
| 1646 | return HAL_TIMEOUT;
|
---|
| 1647 | }
|
---|
| 1648 |
|
---|
| 1649 | /* Write data to DR */
|
---|
| 1650 | hi2c->Instance->DR = (*pData++);
|
---|
| 1651 | Size--;
|
---|
| 1652 |
|
---|
| 1653 | if((__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET) && (Size != 0))
|
---|
| 1654 | {
|
---|
| 1655 | /* Write data to DR */
|
---|
| 1656 | hi2c->Instance->DR = (*pData++);
|
---|
| 1657 | Size--;
|
---|
| 1658 | }
|
---|
| 1659 | }
|
---|
| 1660 |
|
---|
| 1661 | /* Wait until TXE flag is set */
|
---|
| 1662 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 1663 | {
|
---|
| 1664 | return HAL_TIMEOUT;
|
---|
| 1665 | }
|
---|
| 1666 |
|
---|
| 1667 | /* Generate Stop */
|
---|
| 1668 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 1669 |
|
---|
| 1670 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 1671 |
|
---|
| 1672 | /* Process Unlocked */
|
---|
| 1673 | __HAL_UNLOCK(hi2c);
|
---|
| 1674 |
|
---|
| 1675 | return HAL_OK;
|
---|
| 1676 | }
|
---|
| 1677 | else
|
---|
| 1678 | {
|
---|
| 1679 | return HAL_BUSY;
|
---|
| 1680 | }
|
---|
| 1681 | }
|
---|
| 1682 |
|
---|
| 1683 | /**
|
---|
| 1684 | * @brief Read an amount of data in blocking mode from a specific memory address
|
---|
| 1685 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1686 | * the configuration information for I2C module
|
---|
| 1687 | * @param DevAddress: Target device address
|
---|
| 1688 | * @param MemAddress: Internal memory address
|
---|
| 1689 | * @param MemAddSize: Size of internal memory address
|
---|
| 1690 | * @param pData: Pointer to data buffer
|
---|
| 1691 | * @param Size: Amount of data to be sent
|
---|
| 1692 | * @param Timeout: Timeout duration
|
---|
| 1693 | * @retval HAL status
|
---|
| 1694 | */
|
---|
| 1695 | HAL_StatusTypeDef HAL_I2C_Mem_Read(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size, uint32_t Timeout)
|
---|
| 1696 | {
|
---|
| 1697 | /* Check the parameters */
|
---|
| 1698 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 1699 |
|
---|
| 1700 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1701 | {
|
---|
| 1702 | if((pData == NULL) || (Size == 0))
|
---|
| 1703 | {
|
---|
| 1704 | return HAL_ERROR;
|
---|
| 1705 | }
|
---|
| 1706 |
|
---|
| 1707 | /* Wait until BUSY flag is reset */
|
---|
| 1708 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1709 | {
|
---|
| 1710 | return HAL_BUSY;
|
---|
| 1711 | }
|
---|
| 1712 |
|
---|
| 1713 | /* Process Locked */
|
---|
| 1714 | __HAL_LOCK(hi2c);
|
---|
| 1715 |
|
---|
| 1716 | /* Disable Pos */
|
---|
| 1717 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1718 |
|
---|
| 1719 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
|
---|
| 1720 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1721 |
|
---|
| 1722 | /* Send Slave Address and Memory Address */
|
---|
| 1723 | if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, Timeout) != HAL_OK)
|
---|
| 1724 | {
|
---|
| 1725 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1726 | {
|
---|
| 1727 | /* Process Unlocked */
|
---|
| 1728 | __HAL_UNLOCK(hi2c);
|
---|
| 1729 | return HAL_ERROR;
|
---|
| 1730 | }
|
---|
| 1731 | else
|
---|
| 1732 | {
|
---|
| 1733 | /* Process Unlocked */
|
---|
| 1734 | __HAL_UNLOCK(hi2c);
|
---|
| 1735 | return HAL_TIMEOUT;
|
---|
| 1736 | }
|
---|
| 1737 | }
|
---|
| 1738 |
|
---|
| 1739 | if(Size == 1)
|
---|
| 1740 | {
|
---|
| 1741 | /* Disable Acknowledge */
|
---|
| 1742 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1743 |
|
---|
| 1744 | /* Clear ADDR flag */
|
---|
| 1745 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1746 |
|
---|
| 1747 | /* Generate Stop */
|
---|
| 1748 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 1749 | }
|
---|
| 1750 | else if(Size == 2)
|
---|
| 1751 | {
|
---|
| 1752 | /* Disable Acknowledge */
|
---|
| 1753 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1754 |
|
---|
| 1755 | /* Enable Pos */
|
---|
| 1756 | hi2c->Instance->CR1 |= I2C_CR1_POS;
|
---|
| 1757 |
|
---|
| 1758 | /* Clear ADDR flag */
|
---|
| 1759 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1760 | }
|
---|
| 1761 | else
|
---|
| 1762 | {
|
---|
| 1763 | /* Clear ADDR flag */
|
---|
| 1764 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 1765 | }
|
---|
| 1766 |
|
---|
| 1767 | while(Size > 0)
|
---|
| 1768 | {
|
---|
| 1769 | if(Size <= 3)
|
---|
| 1770 | {
|
---|
| 1771 | /* One byte */
|
---|
| 1772 | if(Size== 1)
|
---|
| 1773 | {
|
---|
| 1774 | /* Wait until RXNE flag is set */
|
---|
| 1775 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 1776 | {
|
---|
| 1777 | return HAL_TIMEOUT;
|
---|
| 1778 | }
|
---|
| 1779 |
|
---|
| 1780 | /* Read data from DR */
|
---|
| 1781 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1782 | Size--;
|
---|
| 1783 | }
|
---|
| 1784 | /* Two bytes */
|
---|
| 1785 | else if(Size == 2)
|
---|
| 1786 | {
|
---|
| 1787 | /* Wait until BTF flag is set */
|
---|
| 1788 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 1789 | {
|
---|
| 1790 | return HAL_TIMEOUT;
|
---|
| 1791 | }
|
---|
| 1792 |
|
---|
| 1793 | /* Generate Stop */
|
---|
| 1794 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 1795 |
|
---|
| 1796 | /* Read data from DR */
|
---|
| 1797 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1798 | Size--;
|
---|
| 1799 |
|
---|
| 1800 | /* Read data from DR */
|
---|
| 1801 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1802 | Size--;
|
---|
| 1803 | }
|
---|
| 1804 | /* 3 Last bytes */
|
---|
| 1805 | else
|
---|
| 1806 | {
|
---|
| 1807 | /* Wait until BTF flag is set */
|
---|
| 1808 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 1809 | {
|
---|
| 1810 | return HAL_TIMEOUT;
|
---|
| 1811 | }
|
---|
| 1812 |
|
---|
| 1813 | /* Disable Acknowledge */
|
---|
| 1814 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 1815 |
|
---|
| 1816 | /* Read data from DR */
|
---|
| 1817 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1818 | Size--;
|
---|
| 1819 |
|
---|
| 1820 | /* Wait until BTF flag is set */
|
---|
| 1821 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, Timeout) != HAL_OK)
|
---|
| 1822 | {
|
---|
| 1823 | return HAL_TIMEOUT;
|
---|
| 1824 | }
|
---|
| 1825 |
|
---|
| 1826 | /* Generate Stop */
|
---|
| 1827 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 1828 |
|
---|
| 1829 | /* Read data from DR */
|
---|
| 1830 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1831 | Size--;
|
---|
| 1832 |
|
---|
| 1833 | /* Read data from DR */
|
---|
| 1834 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1835 | Size--;
|
---|
| 1836 | }
|
---|
| 1837 | }
|
---|
| 1838 | else
|
---|
| 1839 | {
|
---|
| 1840 | /* Wait until RXNE flag is set */
|
---|
| 1841 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_RXNE, RESET, Timeout) != HAL_OK)
|
---|
| 1842 | {
|
---|
| 1843 | return HAL_TIMEOUT;
|
---|
| 1844 | }
|
---|
| 1845 |
|
---|
| 1846 | /* Read data from DR */
|
---|
| 1847 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1848 | Size--;
|
---|
| 1849 |
|
---|
| 1850 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF) == SET)
|
---|
| 1851 | {
|
---|
| 1852 | /* Read data from DR */
|
---|
| 1853 | (*pData++) = hi2c->Instance->DR;
|
---|
| 1854 | Size--;
|
---|
| 1855 | }
|
---|
| 1856 | }
|
---|
| 1857 | }
|
---|
| 1858 |
|
---|
| 1859 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 1860 |
|
---|
| 1861 | /* Process Unlocked */
|
---|
| 1862 | __HAL_UNLOCK(hi2c);
|
---|
| 1863 |
|
---|
| 1864 | return HAL_OK;
|
---|
| 1865 | }
|
---|
| 1866 | else
|
---|
| 1867 | {
|
---|
| 1868 | return HAL_BUSY;
|
---|
| 1869 | }
|
---|
| 1870 | }
|
---|
| 1871 | /**
|
---|
| 1872 | * @brief Write an amount of data in no-blocking mode with Interrupt to a specific memory address
|
---|
| 1873 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1874 | * the configuration information for I2C module
|
---|
| 1875 | * @param DevAddress: Target device address
|
---|
| 1876 | * @param MemAddress: Internal memory address
|
---|
| 1877 | * @param MemAddSize: Size of internal memory address
|
---|
| 1878 | * @param pData: Pointer to data buffer
|
---|
| 1879 | * @param Size: Amount of data to be sent
|
---|
| 1880 | * @retval HAL status
|
---|
| 1881 | */
|
---|
| 1882 | HAL_StatusTypeDef HAL_I2C_Mem_Write_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
|
---|
| 1883 | {
|
---|
| 1884 | /* Check the parameters */
|
---|
| 1885 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 1886 |
|
---|
| 1887 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1888 | {
|
---|
| 1889 | if((pData == NULL) || (Size == 0))
|
---|
| 1890 | {
|
---|
| 1891 | return HAL_ERROR;
|
---|
| 1892 | }
|
---|
| 1893 |
|
---|
| 1894 | /* Wait until BUSY flag is reset */
|
---|
| 1895 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1896 | {
|
---|
| 1897 | return HAL_BUSY;
|
---|
| 1898 | }
|
---|
| 1899 |
|
---|
| 1900 | /* Process Locked */
|
---|
| 1901 | __HAL_LOCK(hi2c);
|
---|
| 1902 |
|
---|
| 1903 | /* Disable Pos */
|
---|
| 1904 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1905 |
|
---|
| 1906 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
|
---|
| 1907 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1908 |
|
---|
| 1909 | hi2c->pBuffPtr = pData;
|
---|
| 1910 | hi2c->XferSize = Size;
|
---|
| 1911 | hi2c->XferCount = Size;
|
---|
| 1912 |
|
---|
| 1913 | /* Send Slave Address and Memory Address */
|
---|
| 1914 | if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1915 | {
|
---|
| 1916 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1917 | {
|
---|
| 1918 | /* Process Unlocked */
|
---|
| 1919 | __HAL_UNLOCK(hi2c);
|
---|
| 1920 | return HAL_ERROR;
|
---|
| 1921 | }
|
---|
| 1922 | else
|
---|
| 1923 | {
|
---|
| 1924 | /* Process Unlocked */
|
---|
| 1925 | __HAL_UNLOCK(hi2c);
|
---|
| 1926 | return HAL_TIMEOUT;
|
---|
| 1927 | }
|
---|
| 1928 | }
|
---|
| 1929 |
|
---|
| 1930 | /* Process Unlocked */
|
---|
| 1931 | __HAL_UNLOCK(hi2c);
|
---|
| 1932 |
|
---|
| 1933 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 1934 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 1935 | process unlock */
|
---|
| 1936 |
|
---|
| 1937 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 1938 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 1939 |
|
---|
| 1940 | return HAL_OK;
|
---|
| 1941 | }
|
---|
| 1942 | else
|
---|
| 1943 | {
|
---|
| 1944 | return HAL_BUSY;
|
---|
| 1945 | }
|
---|
| 1946 | }
|
---|
| 1947 |
|
---|
| 1948 | /**
|
---|
| 1949 | * @brief Read an amount of data in no-blocking mode with Interrupt from a specific memory address
|
---|
| 1950 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 1951 | * the configuration information for I2C module
|
---|
| 1952 | * @param DevAddress: Target device address
|
---|
| 1953 | * @param MemAddress: Internal memory address
|
---|
| 1954 | * @param MemAddSize: Size of internal memory address
|
---|
| 1955 | * @param pData: Pointer to data buffer
|
---|
| 1956 | * @param Size: Amount of data to be sent
|
---|
| 1957 | * @retval HAL status
|
---|
| 1958 | */
|
---|
| 1959 | HAL_StatusTypeDef HAL_I2C_Mem_Read_IT(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
|
---|
| 1960 | {
|
---|
| 1961 | /* Check the parameters */
|
---|
| 1962 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 1963 |
|
---|
| 1964 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 1965 | {
|
---|
| 1966 | if((pData == NULL) || (Size == 0))
|
---|
| 1967 | {
|
---|
| 1968 | return HAL_ERROR;
|
---|
| 1969 | }
|
---|
| 1970 |
|
---|
| 1971 | /* Wait until BUSY flag is reset */
|
---|
| 1972 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 1973 | {
|
---|
| 1974 | return HAL_BUSY;
|
---|
| 1975 | }
|
---|
| 1976 |
|
---|
| 1977 | /* Process Locked */
|
---|
| 1978 | __HAL_LOCK(hi2c);
|
---|
| 1979 |
|
---|
| 1980 | /* Disable Pos */
|
---|
| 1981 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 1982 |
|
---|
| 1983 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
|
---|
| 1984 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 1985 |
|
---|
| 1986 | hi2c->pBuffPtr = pData;
|
---|
| 1987 | hi2c->XferSize = Size;
|
---|
| 1988 | hi2c->XferCount = Size;
|
---|
| 1989 |
|
---|
| 1990 | /* Send Slave Address and Memory Address */
|
---|
| 1991 | if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 1992 | {
|
---|
| 1993 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 1994 | {
|
---|
| 1995 | /* Process Unlocked */
|
---|
| 1996 | __HAL_UNLOCK(hi2c);
|
---|
| 1997 | return HAL_ERROR;
|
---|
| 1998 | }
|
---|
| 1999 | else
|
---|
| 2000 | {
|
---|
| 2001 | /* Process Unlocked */
|
---|
| 2002 | __HAL_UNLOCK(hi2c);
|
---|
| 2003 | return HAL_TIMEOUT;
|
---|
| 2004 | }
|
---|
| 2005 | }
|
---|
| 2006 |
|
---|
| 2007 | if(hi2c->XferCount == 1)
|
---|
| 2008 | {
|
---|
| 2009 | /* Disable Acknowledge */
|
---|
| 2010 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2011 |
|
---|
| 2012 | /* Clear ADDR flag */
|
---|
| 2013 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2014 |
|
---|
| 2015 | /* Generate Stop */
|
---|
| 2016 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 2017 | }
|
---|
| 2018 | else if(hi2c->XferCount == 2)
|
---|
| 2019 | {
|
---|
| 2020 | /* Disable Acknowledge */
|
---|
| 2021 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2022 |
|
---|
| 2023 | /* Enable Pos */
|
---|
| 2024 | hi2c->Instance->CR1 |= I2C_CR1_POS;
|
---|
| 2025 |
|
---|
| 2026 | /* Clear ADDR flag */
|
---|
| 2027 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2028 | }
|
---|
| 2029 | else
|
---|
| 2030 | {
|
---|
| 2031 | /* Enable Acknowledge */
|
---|
| 2032 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 2033 |
|
---|
| 2034 | /* Clear ADDR flag */
|
---|
| 2035 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2036 | }
|
---|
| 2037 |
|
---|
| 2038 | /* Process Unlocked */
|
---|
| 2039 | __HAL_UNLOCK(hi2c);
|
---|
| 2040 |
|
---|
| 2041 | /* Note : The I2C interrupts must be enabled after unlocking current process
|
---|
| 2042 | to avoid the risk of I2C interrupt handle execution before current
|
---|
| 2043 | process unlock */
|
---|
| 2044 |
|
---|
| 2045 | /* Enable EVT, BUF and ERR interrupt */
|
---|
| 2046 | __HAL_I2C_ENABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 2047 |
|
---|
| 2048 | return HAL_OK;
|
---|
| 2049 | }
|
---|
| 2050 | else
|
---|
| 2051 | {
|
---|
| 2052 | return HAL_BUSY;
|
---|
| 2053 | }
|
---|
| 2054 | }
|
---|
| 2055 | /**
|
---|
| 2056 | * @brief Write an amount of data in no-blocking mode with DMA to a specific memory address
|
---|
| 2057 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2058 | * the configuration information for I2C module
|
---|
| 2059 | * @param DevAddress: Target device address
|
---|
| 2060 | * @param MemAddress: Internal memory address
|
---|
| 2061 | * @param MemAddSize: Size of internal memory address
|
---|
| 2062 | * @param pData: Pointer to data buffer
|
---|
| 2063 | * @param Size: Amount of data to be sent
|
---|
| 2064 | * @retval HAL status
|
---|
| 2065 | */
|
---|
| 2066 | HAL_StatusTypeDef HAL_I2C_Mem_Write_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
|
---|
| 2067 | {
|
---|
| 2068 | /* Check the parameters */
|
---|
| 2069 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 2070 |
|
---|
| 2071 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 2072 | {
|
---|
| 2073 | if((pData == NULL) || (Size == 0))
|
---|
| 2074 | {
|
---|
| 2075 | return HAL_ERROR;
|
---|
| 2076 | }
|
---|
| 2077 |
|
---|
| 2078 | /* Wait until BUSY flag is reset */
|
---|
| 2079 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 2080 | {
|
---|
| 2081 | return HAL_BUSY;
|
---|
| 2082 | }
|
---|
| 2083 |
|
---|
| 2084 | /* Process Locked */
|
---|
| 2085 | __HAL_LOCK(hi2c);
|
---|
| 2086 |
|
---|
| 2087 | /* Disable Pos */
|
---|
| 2088 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 2089 |
|
---|
| 2090 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_TX;
|
---|
| 2091 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 2092 |
|
---|
| 2093 | hi2c->pBuffPtr = pData;
|
---|
| 2094 | hi2c->XferSize = Size;
|
---|
| 2095 | hi2c->XferCount = Size;
|
---|
| 2096 |
|
---|
| 2097 | /* Set the I2C DMA transfer complete callback */
|
---|
| 2098 | hi2c->hdmatx->XferCpltCallback = I2C_DMAMemTransmitCplt;
|
---|
| 2099 |
|
---|
| 2100 | /* Set the DMA error callback */
|
---|
| 2101 | hi2c->hdmatx->XferErrorCallback = I2C_DMAError;
|
---|
| 2102 |
|
---|
| 2103 | /* Enable the DMA Stream */
|
---|
| 2104 | HAL_DMA_Start_IT(hi2c->hdmatx, (uint32_t)pData, (uint32_t)&hi2c->Instance->DR, Size);
|
---|
| 2105 |
|
---|
| 2106 | /* Send Slave Address and Memory Address */
|
---|
| 2107 | if(I2C_RequestMemoryWrite(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 2108 | {
|
---|
| 2109 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 2110 | {
|
---|
| 2111 | /* Process Unlocked */
|
---|
| 2112 | __HAL_UNLOCK(hi2c);
|
---|
| 2113 | return HAL_ERROR;
|
---|
| 2114 | }
|
---|
| 2115 | else
|
---|
| 2116 | {
|
---|
| 2117 | /* Process Unlocked */
|
---|
| 2118 | __HAL_UNLOCK(hi2c);
|
---|
| 2119 | return HAL_TIMEOUT;
|
---|
| 2120 | }
|
---|
| 2121 | }
|
---|
| 2122 |
|
---|
| 2123 | /* Enable DMA Request */
|
---|
| 2124 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 2125 |
|
---|
| 2126 | /* Process Unlocked */
|
---|
| 2127 | __HAL_UNLOCK(hi2c);
|
---|
| 2128 |
|
---|
| 2129 | return HAL_OK;
|
---|
| 2130 | }
|
---|
| 2131 | else
|
---|
| 2132 | {
|
---|
| 2133 | return HAL_BUSY;
|
---|
| 2134 | }
|
---|
| 2135 | }
|
---|
| 2136 |
|
---|
| 2137 | /**
|
---|
| 2138 | * @brief Reads an amount of data in no-blocking mode with DMA from a specific memory address.
|
---|
| 2139 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2140 | * the configuration information for I2C module
|
---|
| 2141 | * @param DevAddress: Target device address
|
---|
| 2142 | * @param MemAddress: Internal memory address
|
---|
| 2143 | * @param MemAddSize: Size of internal memory address
|
---|
| 2144 | * @param pData: Pointer to data buffer
|
---|
| 2145 | * @param Size: Amount of data to be read
|
---|
| 2146 | * @retval HAL status
|
---|
| 2147 | */
|
---|
| 2148 | HAL_StatusTypeDef HAL_I2C_Mem_Read_DMA(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint8_t *pData, uint16_t Size)
|
---|
| 2149 | {
|
---|
| 2150 | /* Check the parameters */
|
---|
| 2151 | assert_param(IS_I2C_MEMADD_SIZE(MemAddSize));
|
---|
| 2152 |
|
---|
| 2153 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 2154 | {
|
---|
| 2155 | if((pData == NULL) || (Size == 0))
|
---|
| 2156 | {
|
---|
| 2157 | return HAL_ERROR;
|
---|
| 2158 | }
|
---|
| 2159 |
|
---|
| 2160 | /* Wait until BUSY flag is reset */
|
---|
| 2161 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 2162 | {
|
---|
| 2163 | return HAL_BUSY;
|
---|
| 2164 | }
|
---|
| 2165 |
|
---|
| 2166 | /* Process Locked */
|
---|
| 2167 | __HAL_LOCK(hi2c);
|
---|
| 2168 |
|
---|
| 2169 | /* Disable Pos */
|
---|
| 2170 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 2171 |
|
---|
| 2172 | hi2c->State = HAL_I2C_STATE_MEM_BUSY_RX;
|
---|
| 2173 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 2174 |
|
---|
| 2175 | hi2c->pBuffPtr = pData;
|
---|
| 2176 | hi2c->XferSize = Size;
|
---|
| 2177 | hi2c->XferCount = Size;
|
---|
| 2178 |
|
---|
| 2179 | /* Set the I2C DMA transfer complete callback */
|
---|
| 2180 | hi2c->hdmarx->XferCpltCallback = I2C_DMAMemReceiveCplt;
|
---|
| 2181 |
|
---|
| 2182 | /* Set the DMA error callback */
|
---|
| 2183 | hi2c->hdmarx->XferErrorCallback = I2C_DMAError;
|
---|
| 2184 |
|
---|
| 2185 | /* Enable the DMA Stream */
|
---|
| 2186 | HAL_DMA_Start_IT(hi2c->hdmarx, (uint32_t)&hi2c->Instance->DR, (uint32_t)pData, Size);
|
---|
| 2187 |
|
---|
| 2188 | /* Send Slave Address and Memory Address */
|
---|
| 2189 | if(I2C_RequestMemoryRead(hi2c, DevAddress, MemAddress, MemAddSize, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 2190 | {
|
---|
| 2191 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 2192 | {
|
---|
| 2193 | /* Process Unlocked */
|
---|
| 2194 | __HAL_UNLOCK(hi2c);
|
---|
| 2195 | return HAL_ERROR;
|
---|
| 2196 | }
|
---|
| 2197 | else
|
---|
| 2198 | {
|
---|
| 2199 | /* Process Unlocked */
|
---|
| 2200 | __HAL_UNLOCK(hi2c);
|
---|
| 2201 | return HAL_TIMEOUT;
|
---|
| 2202 | }
|
---|
| 2203 | }
|
---|
| 2204 |
|
---|
| 2205 | if(Size == 1)
|
---|
| 2206 | {
|
---|
| 2207 | /* Disable Acknowledge */
|
---|
| 2208 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2209 | }
|
---|
| 2210 | else
|
---|
| 2211 | {
|
---|
| 2212 | /* Enable Last DMA bit */
|
---|
| 2213 | hi2c->Instance->CR2 |= I2C_CR2_LAST;
|
---|
| 2214 | }
|
---|
| 2215 |
|
---|
| 2216 | /* Enable DMA Request */
|
---|
| 2217 | hi2c->Instance->CR2 |= I2C_CR2_DMAEN;
|
---|
| 2218 |
|
---|
| 2219 | /* Clear ADDR flag */
|
---|
| 2220 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2221 |
|
---|
| 2222 | /* Process Unlocked */
|
---|
| 2223 | __HAL_UNLOCK(hi2c);
|
---|
| 2224 |
|
---|
| 2225 | return HAL_OK;
|
---|
| 2226 | }
|
---|
| 2227 | else
|
---|
| 2228 | {
|
---|
| 2229 | return HAL_BUSY;
|
---|
| 2230 | }
|
---|
| 2231 | }
|
---|
| 2232 |
|
---|
| 2233 | /**
|
---|
| 2234 | * @brief Checks if target device is ready for communication.
|
---|
| 2235 | * @note This function is used with Memory devices
|
---|
| 2236 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2237 | * the configuration information for I2C module
|
---|
| 2238 | * @param DevAddress: Target device address
|
---|
| 2239 | * @param Trials: Number of trials
|
---|
| 2240 | * @param Timeout: Timeout duration
|
---|
| 2241 | * @retval HAL status
|
---|
| 2242 | */
|
---|
| 2243 | HAL_StatusTypeDef HAL_I2C_IsDeviceReady(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Trials, uint32_t Timeout)
|
---|
| 2244 | {
|
---|
| 2245 | uint32_t tickstart = 0, tmp1 = 0, tmp2 = 0, tmp3 = 0, I2C_Trials = 1;
|
---|
| 2246 |
|
---|
| 2247 | if(hi2c->State == HAL_I2C_STATE_READY)
|
---|
| 2248 | {
|
---|
| 2249 | /* Wait until BUSY flag is reset */
|
---|
| 2250 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 2251 | {
|
---|
| 2252 | return HAL_BUSY;
|
---|
| 2253 | }
|
---|
| 2254 |
|
---|
| 2255 | /* Process Locked */
|
---|
| 2256 | __HAL_LOCK(hi2c);
|
---|
| 2257 |
|
---|
| 2258 | /* Disable Pos */
|
---|
| 2259 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 2260 |
|
---|
| 2261 | hi2c->State = HAL_I2C_STATE_BUSY;
|
---|
| 2262 | hi2c->ErrorCode = HAL_I2C_ERROR_NONE;
|
---|
| 2263 |
|
---|
| 2264 | do
|
---|
| 2265 | {
|
---|
| 2266 | /* Generate Start */
|
---|
| 2267 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 2268 |
|
---|
| 2269 | /* Wait until SB flag is set */
|
---|
| 2270 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 2271 | {
|
---|
| 2272 | return HAL_TIMEOUT;
|
---|
| 2273 | }
|
---|
| 2274 |
|
---|
| 2275 | /* Send slave address */
|
---|
| 2276 | hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
|
---|
| 2277 |
|
---|
| 2278 | /* Wait until ADDR or AF flag are set */
|
---|
| 2279 | /* Get tick */
|
---|
| 2280 | tickstart = HAL_GetTick();
|
---|
| 2281 |
|
---|
| 2282 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
|
---|
| 2283 | tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2284 | tmp3 = hi2c->State;
|
---|
| 2285 | while((tmp1 == RESET) && (tmp2 == RESET) && (tmp3 != HAL_I2C_STATE_TIMEOUT))
|
---|
| 2286 | {
|
---|
| 2287 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 2288 | {
|
---|
| 2289 | hi2c->State = HAL_I2C_STATE_TIMEOUT;
|
---|
| 2290 | }
|
---|
| 2291 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
|
---|
| 2292 | tmp2 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2293 | tmp3 = hi2c->State;
|
---|
| 2294 | }
|
---|
| 2295 |
|
---|
| 2296 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2297 |
|
---|
| 2298 | /* Check if the ADDR flag has been set */
|
---|
| 2299 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR) == SET)
|
---|
| 2300 | {
|
---|
| 2301 | /* Generate Stop */
|
---|
| 2302 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 2303 |
|
---|
| 2304 | /* Clear ADDR Flag */
|
---|
| 2305 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2306 |
|
---|
| 2307 | /* Wait until BUSY flag is reset */
|
---|
| 2308 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 2309 | {
|
---|
| 2310 | return HAL_TIMEOUT;
|
---|
| 2311 | }
|
---|
| 2312 |
|
---|
| 2313 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2314 |
|
---|
| 2315 | /* Process Unlocked */
|
---|
| 2316 | __HAL_UNLOCK(hi2c);
|
---|
| 2317 |
|
---|
| 2318 | return HAL_OK;
|
---|
| 2319 | }
|
---|
| 2320 | else
|
---|
| 2321 | {
|
---|
| 2322 | /* Generate Stop */
|
---|
| 2323 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 2324 |
|
---|
| 2325 | /* Clear AF Flag */
|
---|
| 2326 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2327 |
|
---|
| 2328 | /* Wait until BUSY flag is reset */
|
---|
| 2329 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BUSY, SET, I2C_TIMEOUT_BUSY_FLAG) != HAL_OK)
|
---|
| 2330 | {
|
---|
| 2331 | return HAL_TIMEOUT;
|
---|
| 2332 | }
|
---|
| 2333 |
|
---|
| 2334 | }
|
---|
| 2335 | }while(I2C_Trials++ < Trials);
|
---|
| 2336 |
|
---|
| 2337 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2338 |
|
---|
| 2339 | /* Process Unlocked */
|
---|
| 2340 | __HAL_UNLOCK(hi2c);
|
---|
| 2341 |
|
---|
| 2342 | return HAL_ERROR;
|
---|
| 2343 | }
|
---|
| 2344 | else
|
---|
| 2345 | {
|
---|
| 2346 | return HAL_BUSY;
|
---|
| 2347 | }
|
---|
| 2348 | }
|
---|
| 2349 |
|
---|
| 2350 | /**
|
---|
| 2351 | * @brief This function handles I2C event interrupt request.
|
---|
| 2352 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2353 | * the configuration information for I2C module
|
---|
| 2354 | * @retval HAL status
|
---|
| 2355 | */
|
---|
| 2356 | void HAL_I2C_EV_IRQHandler(I2C_HandleTypeDef *hi2c)
|
---|
| 2357 | {
|
---|
| 2358 | uint32_t tmp1 = 0, tmp2 = 0, tmp3 = 0, tmp4 = 0;
|
---|
| 2359 | /* Master mode selected */
|
---|
| 2360 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_MSL) == SET)
|
---|
| 2361 | {
|
---|
| 2362 | /* I2C in mode Transmitter -----------------------------------------------*/
|
---|
| 2363 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA) == SET)
|
---|
| 2364 | {
|
---|
| 2365 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE);
|
---|
| 2366 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
|
---|
| 2367 | tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
|
---|
| 2368 | tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
|
---|
| 2369 | /* TXE set and BTF reset -----------------------------------------------*/
|
---|
| 2370 | if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
|
---|
| 2371 | {
|
---|
| 2372 | I2C_MasterTransmit_TXE(hi2c);
|
---|
| 2373 | }
|
---|
| 2374 | /* BTF set -------------------------------------------------------------*/
|
---|
| 2375 | else if((tmp3 == SET) && (tmp4 == SET))
|
---|
| 2376 | {
|
---|
| 2377 | I2C_MasterTransmit_BTF(hi2c);
|
---|
| 2378 | }
|
---|
| 2379 | }
|
---|
| 2380 | /* I2C in mode Receiver --------------------------------------------------*/
|
---|
| 2381 | else
|
---|
| 2382 | {
|
---|
| 2383 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE);
|
---|
| 2384 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
|
---|
| 2385 | tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
|
---|
| 2386 | tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
|
---|
| 2387 | /* RXNE set and BTF reset -----------------------------------------------*/
|
---|
| 2388 | if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
|
---|
| 2389 | {
|
---|
| 2390 | I2C_MasterReceive_RXNE(hi2c);
|
---|
| 2391 | }
|
---|
| 2392 | /* BTF set -------------------------------------------------------------*/
|
---|
| 2393 | else if((tmp3 == SET) && (tmp4 == SET))
|
---|
| 2394 | {
|
---|
| 2395 | I2C_MasterReceive_BTF(hi2c);
|
---|
| 2396 | }
|
---|
| 2397 | }
|
---|
| 2398 | }
|
---|
| 2399 | /* Slave mode selected */
|
---|
| 2400 | else
|
---|
| 2401 | {
|
---|
| 2402 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ADDR);
|
---|
| 2403 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, (I2C_IT_EVT));
|
---|
| 2404 | tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_STOPF);
|
---|
| 2405 | tmp4 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TRA);
|
---|
| 2406 | /* ADDR set --------------------------------------------------------------*/
|
---|
| 2407 | if((tmp1 == SET) && (tmp2 == SET))
|
---|
| 2408 | {
|
---|
| 2409 | I2C_Slave_ADDR(hi2c);
|
---|
| 2410 | }
|
---|
| 2411 | /* STOPF set --------------------------------------------------------------*/
|
---|
| 2412 | else if((tmp3 == SET) && (tmp2 == SET))
|
---|
| 2413 | {
|
---|
| 2414 | I2C_Slave_STOPF(hi2c);
|
---|
| 2415 | }
|
---|
| 2416 | /* I2C in mode Transmitter -----------------------------------------------*/
|
---|
| 2417 | else if(tmp4 == SET)
|
---|
| 2418 | {
|
---|
| 2419 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_TXE);
|
---|
| 2420 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
|
---|
| 2421 | tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
|
---|
| 2422 | tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
|
---|
| 2423 | /* TXE set and BTF reset -----------------------------------------------*/
|
---|
| 2424 | if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
|
---|
| 2425 | {
|
---|
| 2426 | I2C_SlaveTransmit_TXE(hi2c);
|
---|
| 2427 | }
|
---|
| 2428 | /* BTF set -------------------------------------------------------------*/
|
---|
| 2429 | else if((tmp3 == SET) && (tmp4 == SET))
|
---|
| 2430 | {
|
---|
| 2431 | I2C_SlaveTransmit_BTF(hi2c);
|
---|
| 2432 | }
|
---|
| 2433 | }
|
---|
| 2434 | /* I2C in mode Receiver --------------------------------------------------*/
|
---|
| 2435 | else
|
---|
| 2436 | {
|
---|
| 2437 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_RXNE);
|
---|
| 2438 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_BUF);
|
---|
| 2439 | tmp3 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BTF);
|
---|
| 2440 | tmp4 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_EVT);
|
---|
| 2441 | /* RXNE set and BTF reset ----------------------------------------------*/
|
---|
| 2442 | if((tmp1 == SET) && (tmp2 == SET) && (tmp3 == RESET))
|
---|
| 2443 | {
|
---|
| 2444 | I2C_SlaveReceive_RXNE(hi2c);
|
---|
| 2445 | }
|
---|
| 2446 | /* BTF set -------------------------------------------------------------*/
|
---|
| 2447 | else if((tmp3 == SET) && (tmp4 == SET))
|
---|
| 2448 | {
|
---|
| 2449 | I2C_SlaveReceive_BTF(hi2c);
|
---|
| 2450 | }
|
---|
| 2451 | }
|
---|
| 2452 | }
|
---|
| 2453 | }
|
---|
| 2454 |
|
---|
| 2455 | /**
|
---|
| 2456 | * @brief This function handles I2C error interrupt request.
|
---|
| 2457 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2458 | * the configuration information for I2C module
|
---|
| 2459 | * @retval HAL status
|
---|
| 2460 | */
|
---|
| 2461 | void HAL_I2C_ER_IRQHandler(I2C_HandleTypeDef *hi2c)
|
---|
| 2462 | {
|
---|
| 2463 | uint32_t tmp1 = 0, tmp2 = 0, tmp3 = 0;
|
---|
| 2464 |
|
---|
| 2465 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_BERR);
|
---|
| 2466 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
|
---|
| 2467 | /* I2C Bus error interrupt occurred ----------------------------------------*/
|
---|
| 2468 | if((tmp1 == SET) && (tmp2 == SET))
|
---|
| 2469 | {
|
---|
| 2470 | hi2c->ErrorCode |= HAL_I2C_ERROR_BERR;
|
---|
| 2471 |
|
---|
| 2472 | /* Clear BERR flag */
|
---|
| 2473 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_BERR);
|
---|
| 2474 | }
|
---|
| 2475 |
|
---|
| 2476 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_ARLO);
|
---|
| 2477 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
|
---|
| 2478 | /* I2C Arbitration Loss error interrupt occurred ---------------------------*/
|
---|
| 2479 | if((tmp1 == SET) && (tmp2 == SET))
|
---|
| 2480 | {
|
---|
| 2481 | hi2c->ErrorCode |= HAL_I2C_ERROR_ARLO;
|
---|
| 2482 |
|
---|
| 2483 | /* Clear ARLO flag */
|
---|
| 2484 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_ARLO);
|
---|
| 2485 | }
|
---|
| 2486 |
|
---|
| 2487 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2488 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
|
---|
| 2489 | /* I2C Acknowledge failure error interrupt occurred ------------------------*/
|
---|
| 2490 | if((tmp1 == SET) && (tmp2 == SET))
|
---|
| 2491 | {
|
---|
| 2492 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_MSL);
|
---|
| 2493 | tmp2 = hi2c->XferCount;
|
---|
| 2494 | tmp3 = hi2c->State;
|
---|
| 2495 | if((tmp1 == RESET) && (tmp2 == 0) && (tmp3 == HAL_I2C_STATE_BUSY_TX))
|
---|
| 2496 | {
|
---|
| 2497 | I2C_Slave_AF(hi2c);
|
---|
| 2498 | }
|
---|
| 2499 | else
|
---|
| 2500 | {
|
---|
| 2501 | hi2c->ErrorCode |= HAL_I2C_ERROR_AF;
|
---|
| 2502 | /* Clear AF flag */
|
---|
| 2503 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2504 | }
|
---|
| 2505 | }
|
---|
| 2506 |
|
---|
| 2507 | tmp1 = __HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_OVR);
|
---|
| 2508 | tmp2 = __HAL_I2C_GET_IT_SOURCE(hi2c, I2C_IT_ERR);
|
---|
| 2509 | /* I2C Over-Run/Under-Run interrupt occurred -------------------------------*/
|
---|
| 2510 | if((tmp1 == SET) && (tmp2 == SET))
|
---|
| 2511 | {
|
---|
| 2512 | hi2c->ErrorCode |= HAL_I2C_ERROR_OVR;
|
---|
| 2513 | /* Clear OVR flag */
|
---|
| 2514 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_OVR);
|
---|
| 2515 | }
|
---|
| 2516 |
|
---|
| 2517 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 2518 | {
|
---|
| 2519 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2520 |
|
---|
| 2521 | /* Disable Pos bit in I2C CR1 when error occurred in Master/Mem Receive IT Process */
|
---|
| 2522 | hi2c->Instance->CR1 &= ~I2C_CR1_POS;
|
---|
| 2523 |
|
---|
| 2524 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 2525 | }
|
---|
| 2526 | }
|
---|
| 2527 |
|
---|
| 2528 | /**
|
---|
| 2529 | * @brief Master Tx Transfer completed callbacks.
|
---|
| 2530 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2531 | * the configuration information for I2C module
|
---|
| 2532 | * @retval None
|
---|
| 2533 | */
|
---|
| 2534 | __weak void HAL_I2C_MasterTxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2535 | {
|
---|
| 2536 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2537 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2538 | */
|
---|
| 2539 | }
|
---|
| 2540 |
|
---|
| 2541 | /**
|
---|
| 2542 | * @brief Master Rx Transfer completed callbacks.
|
---|
| 2543 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2544 | * the configuration information for I2C module
|
---|
| 2545 | * @retval None
|
---|
| 2546 | */
|
---|
| 2547 | __weak void HAL_I2C_MasterRxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2548 | {
|
---|
| 2549 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2550 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2551 | */
|
---|
| 2552 | }
|
---|
| 2553 |
|
---|
| 2554 | /** @brief Slave Tx Transfer completed callbacks.
|
---|
| 2555 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2556 | * the configuration information for I2C module
|
---|
| 2557 | * @retval None
|
---|
| 2558 | */
|
---|
| 2559 | __weak void HAL_I2C_SlaveTxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2560 | {
|
---|
| 2561 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2562 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2563 | */
|
---|
| 2564 | }
|
---|
| 2565 |
|
---|
| 2566 | /**
|
---|
| 2567 | * @brief Slave Rx Transfer completed callbacks.
|
---|
| 2568 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2569 | * the configuration information for I2C module
|
---|
| 2570 | * @retval None
|
---|
| 2571 | */
|
---|
| 2572 | __weak void HAL_I2C_SlaveRxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2573 | {
|
---|
| 2574 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2575 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2576 | */
|
---|
| 2577 | }
|
---|
| 2578 |
|
---|
| 2579 | /**
|
---|
| 2580 | * @brief Memory Tx Transfer completed callbacks.
|
---|
| 2581 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2582 | * the configuration information for I2C module
|
---|
| 2583 | * @retval None
|
---|
| 2584 | */
|
---|
| 2585 | __weak void HAL_I2C_MemTxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2586 | {
|
---|
| 2587 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2588 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2589 | */
|
---|
| 2590 | }
|
---|
| 2591 |
|
---|
| 2592 | /**
|
---|
| 2593 | * @brief Memory Rx Transfer completed callbacks.
|
---|
| 2594 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2595 | * the configuration information for I2C module
|
---|
| 2596 | * @retval None
|
---|
| 2597 | */
|
---|
| 2598 | __weak void HAL_I2C_MemRxCpltCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2599 | {
|
---|
| 2600 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2601 | the HAL_I2C_TxCpltCallback could be implemented in the user file
|
---|
| 2602 | */
|
---|
| 2603 | }
|
---|
| 2604 |
|
---|
| 2605 | /**
|
---|
| 2606 | * @brief I2C error callbacks.
|
---|
| 2607 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2608 | * the configuration information for I2C module
|
---|
| 2609 | * @retval None
|
---|
| 2610 | */
|
---|
| 2611 | __weak void HAL_I2C_ErrorCallback(I2C_HandleTypeDef *hi2c)
|
---|
| 2612 | {
|
---|
| 2613 | /* NOTE : This function Should not be modified, when the callback is needed,
|
---|
| 2614 | the HAL_I2C_ErrorCallback could be implemented in the user file
|
---|
| 2615 | */
|
---|
| 2616 | }
|
---|
| 2617 |
|
---|
| 2618 | /**
|
---|
| 2619 | * @}
|
---|
| 2620 | */
|
---|
| 2621 |
|
---|
| 2622 | /** @defgroup I2C_Exported_Functions_Group3 Peripheral State and Errors functions
|
---|
| 2623 | * @brief Peripheral State and Errors functions
|
---|
| 2624 | *
|
---|
| 2625 | @verbatim
|
---|
| 2626 | ===============================================================================
|
---|
| 2627 | ##### Peripheral State and Errors functions #####
|
---|
| 2628 | ===============================================================================
|
---|
| 2629 | [..]
|
---|
| 2630 | This subsection permits to get in run-time the status of the peripheral
|
---|
| 2631 | and the data flow.
|
---|
| 2632 |
|
---|
| 2633 | @endverbatim
|
---|
| 2634 | * @{
|
---|
| 2635 | */
|
---|
| 2636 |
|
---|
| 2637 | /**
|
---|
| 2638 | * @brief Returns the I2C state.
|
---|
| 2639 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2640 | * the configuration information for I2C module
|
---|
| 2641 | * @retval HAL state
|
---|
| 2642 | */
|
---|
| 2643 | HAL_I2C_StateTypeDef HAL_I2C_GetState(I2C_HandleTypeDef *hi2c)
|
---|
| 2644 | {
|
---|
| 2645 | return hi2c->State;
|
---|
| 2646 | }
|
---|
| 2647 |
|
---|
| 2648 | /**
|
---|
| 2649 | * @brief Return the I2C error code
|
---|
| 2650 | * @param hi2c : pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2651 | * the configuration information for the specified I2C.
|
---|
| 2652 | * @retval I2C Error Code
|
---|
| 2653 | */
|
---|
| 2654 | uint32_t HAL_I2C_GetError(I2C_HandleTypeDef *hi2c)
|
---|
| 2655 | {
|
---|
| 2656 | return hi2c->ErrorCode;
|
---|
| 2657 | }
|
---|
| 2658 |
|
---|
| 2659 | /**
|
---|
| 2660 | * @}
|
---|
| 2661 | */
|
---|
| 2662 |
|
---|
| 2663 | /**
|
---|
| 2664 | * @brief Handle TXE flag for Master
|
---|
| 2665 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2666 | * the configuration information for I2C module
|
---|
| 2667 | * @retval HAL status
|
---|
| 2668 | */
|
---|
| 2669 | static HAL_StatusTypeDef I2C_MasterTransmit_TXE(I2C_HandleTypeDef *hi2c)
|
---|
| 2670 | {
|
---|
| 2671 | /* Write data to DR */
|
---|
| 2672 | hi2c->Instance->DR = (*hi2c->pBuffPtr++);
|
---|
| 2673 | hi2c->XferCount--;
|
---|
| 2674 |
|
---|
| 2675 | if(hi2c->XferCount == 0)
|
---|
| 2676 | {
|
---|
| 2677 | /* Disable BUF interrupt */
|
---|
| 2678 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
|
---|
| 2679 | }
|
---|
| 2680 |
|
---|
| 2681 | return HAL_OK;
|
---|
| 2682 | }
|
---|
| 2683 |
|
---|
| 2684 | /**
|
---|
| 2685 | * @brief Handle BTF flag for Master transmitter
|
---|
| 2686 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2687 | * the configuration information for I2C module
|
---|
| 2688 | * @retval HAL status
|
---|
| 2689 | */
|
---|
| 2690 | static HAL_StatusTypeDef I2C_MasterTransmit_BTF(I2C_HandleTypeDef *hi2c)
|
---|
| 2691 | {
|
---|
| 2692 | if(hi2c->XferCount != 0)
|
---|
| 2693 | {
|
---|
| 2694 | /* Write data to DR */
|
---|
| 2695 | hi2c->Instance->DR = (*hi2c->pBuffPtr++);
|
---|
| 2696 | hi2c->XferCount--;
|
---|
| 2697 | }
|
---|
| 2698 | else
|
---|
| 2699 | {
|
---|
| 2700 | /* Disable EVT, BUF and ERR interrupt */
|
---|
| 2701 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 2702 |
|
---|
| 2703 | /* Generate Stop */
|
---|
| 2704 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 2705 |
|
---|
| 2706 | if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_TX)
|
---|
| 2707 | {
|
---|
| 2708 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2709 |
|
---|
| 2710 | HAL_I2C_MemTxCpltCallback(hi2c);
|
---|
| 2711 | }
|
---|
| 2712 | else
|
---|
| 2713 | {
|
---|
| 2714 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2715 |
|
---|
| 2716 | HAL_I2C_MasterTxCpltCallback(hi2c);
|
---|
| 2717 | }
|
---|
| 2718 | }
|
---|
| 2719 | return HAL_OK;
|
---|
| 2720 | }
|
---|
| 2721 |
|
---|
| 2722 | /**
|
---|
| 2723 | * @brief Handle RXNE flag for Master
|
---|
| 2724 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2725 | * the configuration information for I2C module
|
---|
| 2726 | * @retval HAL status
|
---|
| 2727 | */
|
---|
| 2728 | static HAL_StatusTypeDef I2C_MasterReceive_RXNE(I2C_HandleTypeDef *hi2c)
|
---|
| 2729 | {
|
---|
| 2730 | uint32_t tmp = 0;
|
---|
| 2731 |
|
---|
| 2732 | tmp = hi2c->XferCount;
|
---|
| 2733 | if(tmp > 3)
|
---|
| 2734 | {
|
---|
| 2735 | /* Read data from DR */
|
---|
| 2736 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2737 | hi2c->XferCount--;
|
---|
| 2738 | }
|
---|
| 2739 | else if((tmp == 2) || (tmp == 3))
|
---|
| 2740 | {
|
---|
| 2741 | /* Disable BUF interrupt */
|
---|
| 2742 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_BUF);
|
---|
| 2743 | }
|
---|
| 2744 | else
|
---|
| 2745 | {
|
---|
| 2746 | /* Disable EVT, BUF and ERR interrupt */
|
---|
| 2747 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 2748 |
|
---|
| 2749 | /* Read data from DR */
|
---|
| 2750 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2751 | hi2c->XferCount--;
|
---|
| 2752 |
|
---|
| 2753 | if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX)
|
---|
| 2754 | {
|
---|
| 2755 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2756 |
|
---|
| 2757 | HAL_I2C_MemRxCpltCallback(hi2c);
|
---|
| 2758 | }
|
---|
| 2759 | else
|
---|
| 2760 | {
|
---|
| 2761 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2762 |
|
---|
| 2763 | HAL_I2C_MasterRxCpltCallback(hi2c);
|
---|
| 2764 | }
|
---|
| 2765 | }
|
---|
| 2766 | return HAL_OK;
|
---|
| 2767 | }
|
---|
| 2768 |
|
---|
| 2769 | /**
|
---|
| 2770 | * @brief Handle BTF flag for Master receiver
|
---|
| 2771 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2772 | * the configuration information for I2C module
|
---|
| 2773 | * @retval HAL status
|
---|
| 2774 | */
|
---|
| 2775 | static HAL_StatusTypeDef I2C_MasterReceive_BTF(I2C_HandleTypeDef *hi2c)
|
---|
| 2776 | {
|
---|
| 2777 | if(hi2c->XferCount == 3)
|
---|
| 2778 | {
|
---|
| 2779 | /* Disable Acknowledge */
|
---|
| 2780 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2781 |
|
---|
| 2782 | /* Read data from DR */
|
---|
| 2783 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2784 | hi2c->XferCount--;
|
---|
| 2785 | }
|
---|
| 2786 | else if(hi2c->XferCount == 2)
|
---|
| 2787 | {
|
---|
| 2788 | /* Generate Stop */
|
---|
| 2789 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 2790 |
|
---|
| 2791 | /* Read data from DR */
|
---|
| 2792 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2793 | hi2c->XferCount--;
|
---|
| 2794 |
|
---|
| 2795 | /* Read data from DR */
|
---|
| 2796 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2797 | hi2c->XferCount--;
|
---|
| 2798 |
|
---|
| 2799 | /* Disable EVT and ERR interrupt */
|
---|
| 2800 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_ERR);
|
---|
| 2801 |
|
---|
| 2802 | if(hi2c->State == HAL_I2C_STATE_MEM_BUSY_RX)
|
---|
| 2803 | {
|
---|
| 2804 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2805 |
|
---|
| 2806 | HAL_I2C_MemRxCpltCallback(hi2c);
|
---|
| 2807 | }
|
---|
| 2808 | else
|
---|
| 2809 | {
|
---|
| 2810 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2811 |
|
---|
| 2812 | HAL_I2C_MasterRxCpltCallback(hi2c);
|
---|
| 2813 | }
|
---|
| 2814 | }
|
---|
| 2815 | else
|
---|
| 2816 | {
|
---|
| 2817 | /* Read data from DR */
|
---|
| 2818 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2819 | hi2c->XferCount--;
|
---|
| 2820 | }
|
---|
| 2821 | return HAL_OK;
|
---|
| 2822 | }
|
---|
| 2823 |
|
---|
| 2824 | /**
|
---|
| 2825 | * @brief Handle TXE flag for Slave
|
---|
| 2826 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2827 | * the configuration information for I2C module
|
---|
| 2828 | * @retval HAL status
|
---|
| 2829 | */
|
---|
| 2830 | static HAL_StatusTypeDef I2C_SlaveTransmit_TXE(I2C_HandleTypeDef *hi2c)
|
---|
| 2831 | {
|
---|
| 2832 | if(hi2c->XferCount != 0)
|
---|
| 2833 | {
|
---|
| 2834 | /* Write data to DR */
|
---|
| 2835 | hi2c->Instance->DR = (*hi2c->pBuffPtr++);
|
---|
| 2836 | hi2c->XferCount--;
|
---|
| 2837 | }
|
---|
| 2838 | return HAL_OK;
|
---|
| 2839 | }
|
---|
| 2840 |
|
---|
| 2841 | /**
|
---|
| 2842 | * @brief Handle BTF flag for Slave transmitter
|
---|
| 2843 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2844 | * the configuration information for I2C module
|
---|
| 2845 | * @retval HAL status
|
---|
| 2846 | */
|
---|
| 2847 | static HAL_StatusTypeDef I2C_SlaveTransmit_BTF(I2C_HandleTypeDef *hi2c)
|
---|
| 2848 | {
|
---|
| 2849 | if(hi2c->XferCount != 0)
|
---|
| 2850 | {
|
---|
| 2851 | /* Write data to DR */
|
---|
| 2852 | hi2c->Instance->DR = (*hi2c->pBuffPtr++);
|
---|
| 2853 | hi2c->XferCount--;
|
---|
| 2854 | }
|
---|
| 2855 | return HAL_OK;
|
---|
| 2856 | }
|
---|
| 2857 |
|
---|
| 2858 | /**
|
---|
| 2859 | * @brief Handle RXNE flag for Slave
|
---|
| 2860 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2861 | * the configuration information for I2C module
|
---|
| 2862 | * @retval HAL status
|
---|
| 2863 | */
|
---|
| 2864 | static HAL_StatusTypeDef I2C_SlaveReceive_RXNE(I2C_HandleTypeDef *hi2c)
|
---|
| 2865 | {
|
---|
| 2866 | if(hi2c->XferCount != 0)
|
---|
| 2867 | {
|
---|
| 2868 | /* Read data from DR */
|
---|
| 2869 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2870 | hi2c->XferCount--;
|
---|
| 2871 | }
|
---|
| 2872 | return HAL_OK;
|
---|
| 2873 | }
|
---|
| 2874 |
|
---|
| 2875 | /**
|
---|
| 2876 | * @brief Handle BTF flag for Slave receiver
|
---|
| 2877 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2878 | * the configuration information for I2C module
|
---|
| 2879 | * @retval HAL status
|
---|
| 2880 | */
|
---|
| 2881 | static HAL_StatusTypeDef I2C_SlaveReceive_BTF(I2C_HandleTypeDef *hi2c)
|
---|
| 2882 | {
|
---|
| 2883 | if(hi2c->XferCount != 0)
|
---|
| 2884 | {
|
---|
| 2885 | /* Read data from DR */
|
---|
| 2886 | (*hi2c->pBuffPtr++) = hi2c->Instance->DR;
|
---|
| 2887 | hi2c->XferCount--;
|
---|
| 2888 | }
|
---|
| 2889 | return HAL_OK;
|
---|
| 2890 | }
|
---|
| 2891 |
|
---|
| 2892 | /**
|
---|
| 2893 | * @brief Handle ADD flag for Slave
|
---|
| 2894 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2895 | * the configuration information for I2C module
|
---|
| 2896 | * @retval HAL status
|
---|
| 2897 | */
|
---|
| 2898 | static HAL_StatusTypeDef I2C_Slave_ADDR(I2C_HandleTypeDef *hi2c)
|
---|
| 2899 | {
|
---|
| 2900 | /* Clear ADDR flag */
|
---|
| 2901 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 2902 |
|
---|
| 2903 | return HAL_OK;
|
---|
| 2904 | }
|
---|
| 2905 |
|
---|
| 2906 | /**
|
---|
| 2907 | * @brief Handle STOPF flag for Slave
|
---|
| 2908 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2909 | * the configuration information for I2C module
|
---|
| 2910 | * @retval HAL status
|
---|
| 2911 | */
|
---|
| 2912 | static HAL_StatusTypeDef I2C_Slave_STOPF(I2C_HandleTypeDef *hi2c)
|
---|
| 2913 | {
|
---|
| 2914 | /* Disable EVT, BUF and ERR interrupt */
|
---|
| 2915 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 2916 |
|
---|
| 2917 | /* Clear STOPF flag */
|
---|
| 2918 | __HAL_I2C_CLEAR_STOPFLAG(hi2c);
|
---|
| 2919 |
|
---|
| 2920 | /* Disable Acknowledge */
|
---|
| 2921 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2922 |
|
---|
| 2923 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2924 |
|
---|
| 2925 | HAL_I2C_SlaveRxCpltCallback(hi2c);
|
---|
| 2926 |
|
---|
| 2927 | return HAL_OK;
|
---|
| 2928 | }
|
---|
| 2929 |
|
---|
| 2930 | /**
|
---|
| 2931 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2932 | * the configuration information for I2C module
|
---|
| 2933 | * @retval HAL status
|
---|
| 2934 | */
|
---|
| 2935 | static HAL_StatusTypeDef I2C_Slave_AF(I2C_HandleTypeDef *hi2c)
|
---|
| 2936 | {
|
---|
| 2937 | /* Disable EVT, BUF and ERR interrupt */
|
---|
| 2938 | __HAL_I2C_DISABLE_IT(hi2c, I2C_IT_EVT | I2C_IT_BUF | I2C_IT_ERR);
|
---|
| 2939 |
|
---|
| 2940 | /* Clear AF flag */
|
---|
| 2941 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 2942 |
|
---|
| 2943 | /* Disable Acknowledge */
|
---|
| 2944 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 2945 |
|
---|
| 2946 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 2947 |
|
---|
| 2948 | HAL_I2C_SlaveTxCpltCallback(hi2c);
|
---|
| 2949 |
|
---|
| 2950 | return HAL_OK;
|
---|
| 2951 | }
|
---|
| 2952 |
|
---|
| 2953 | /**
|
---|
| 2954 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 2955 | * the configuration information for I2C module
|
---|
| 2956 | * @param DevAddress: Target device address
|
---|
| 2957 | * @param Timeout: Timeout duration
|
---|
| 2958 | * @retval HAL status
|
---|
| 2959 | */
|
---|
| 2960 | static HAL_StatusTypeDef I2C_MasterRequestWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout)
|
---|
| 2961 | {
|
---|
| 2962 | /* Generate Start */
|
---|
| 2963 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 2964 |
|
---|
| 2965 | /* Wait until SB flag is set */
|
---|
| 2966 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 2967 | {
|
---|
| 2968 | return HAL_TIMEOUT;
|
---|
| 2969 | }
|
---|
| 2970 |
|
---|
| 2971 | if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
|
---|
| 2972 | {
|
---|
| 2973 | /* Send slave address */
|
---|
| 2974 | hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
|
---|
| 2975 | }
|
---|
| 2976 | else
|
---|
| 2977 | {
|
---|
| 2978 | /* Send header of slave address */
|
---|
| 2979 | hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
|
---|
| 2980 |
|
---|
| 2981 | /* Wait until ADD10 flag is set */
|
---|
| 2982 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout) != HAL_OK)
|
---|
| 2983 | {
|
---|
| 2984 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 2985 | {
|
---|
| 2986 | return HAL_ERROR;
|
---|
| 2987 | }
|
---|
| 2988 | else
|
---|
| 2989 | {
|
---|
| 2990 | return HAL_TIMEOUT;
|
---|
| 2991 | }
|
---|
| 2992 | }
|
---|
| 2993 |
|
---|
| 2994 | /* Send slave address */
|
---|
| 2995 | hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
|
---|
| 2996 | }
|
---|
| 2997 |
|
---|
| 2998 | /* Wait until ADDR flag is set */
|
---|
| 2999 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3000 | {
|
---|
| 3001 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3002 | {
|
---|
| 3003 | return HAL_ERROR;
|
---|
| 3004 | }
|
---|
| 3005 | else
|
---|
| 3006 | {
|
---|
| 3007 | return HAL_TIMEOUT;
|
---|
| 3008 | }
|
---|
| 3009 | }
|
---|
| 3010 |
|
---|
| 3011 | return HAL_OK;
|
---|
| 3012 | }
|
---|
| 3013 |
|
---|
| 3014 | /**
|
---|
| 3015 | * @brief Master sends target device address for read request.
|
---|
| 3016 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 3017 | * the configuration information for I2C module
|
---|
| 3018 | * @param DevAddress: Target device address
|
---|
| 3019 | * @param Timeout: Timeout duration
|
---|
| 3020 | * @retval HAL status
|
---|
| 3021 | */
|
---|
| 3022 | static HAL_StatusTypeDef I2C_MasterRequestRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint32_t Timeout)
|
---|
| 3023 | {
|
---|
| 3024 | /* Enable Acknowledge */
|
---|
| 3025 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 3026 |
|
---|
| 3027 | /* Generate Start */
|
---|
| 3028 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 3029 |
|
---|
| 3030 | /* Wait until SB flag is set */
|
---|
| 3031 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 3032 | {
|
---|
| 3033 | return HAL_TIMEOUT;
|
---|
| 3034 | }
|
---|
| 3035 |
|
---|
| 3036 | if(hi2c->Init.AddressingMode == I2C_ADDRESSINGMODE_7BIT)
|
---|
| 3037 | {
|
---|
| 3038 | /* Send slave address */
|
---|
| 3039 | hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
|
---|
| 3040 | }
|
---|
| 3041 | else
|
---|
| 3042 | {
|
---|
| 3043 | /* Send header of slave address */
|
---|
| 3044 | hi2c->Instance->DR = I2C_10BIT_HEADER_WRITE(DevAddress);
|
---|
| 3045 |
|
---|
| 3046 | /* Wait until ADD10 flag is set */
|
---|
| 3047 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADD10, Timeout) != HAL_OK)
|
---|
| 3048 | {
|
---|
| 3049 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3050 | {
|
---|
| 3051 | return HAL_ERROR;
|
---|
| 3052 | }
|
---|
| 3053 | else
|
---|
| 3054 | {
|
---|
| 3055 | return HAL_TIMEOUT;
|
---|
| 3056 | }
|
---|
| 3057 | }
|
---|
| 3058 |
|
---|
| 3059 | /* Send slave address */
|
---|
| 3060 | hi2c->Instance->DR = I2C_10BIT_ADDRESS(DevAddress);
|
---|
| 3061 |
|
---|
| 3062 | /* Wait until ADDR flag is set */
|
---|
| 3063 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3064 | {
|
---|
| 3065 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3066 | {
|
---|
| 3067 | return HAL_ERROR;
|
---|
| 3068 | }
|
---|
| 3069 | else
|
---|
| 3070 | {
|
---|
| 3071 | return HAL_TIMEOUT;
|
---|
| 3072 | }
|
---|
| 3073 | }
|
---|
| 3074 |
|
---|
| 3075 | /* Clear ADDR flag */
|
---|
| 3076 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 3077 |
|
---|
| 3078 | /* Generate Restart */
|
---|
| 3079 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 3080 |
|
---|
| 3081 | /* Wait until SB flag is set */
|
---|
| 3082 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 3083 | {
|
---|
| 3084 | return HAL_TIMEOUT;
|
---|
| 3085 | }
|
---|
| 3086 |
|
---|
| 3087 | /* Send header of slave address */
|
---|
| 3088 | hi2c->Instance->DR = I2C_10BIT_HEADER_READ(DevAddress);
|
---|
| 3089 | }
|
---|
| 3090 |
|
---|
| 3091 | /* Wait until ADDR flag is set */
|
---|
| 3092 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3093 | {
|
---|
| 3094 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3095 | {
|
---|
| 3096 | return HAL_ERROR;
|
---|
| 3097 | }
|
---|
| 3098 | else
|
---|
| 3099 | {
|
---|
| 3100 | return HAL_TIMEOUT;
|
---|
| 3101 | }
|
---|
| 3102 | }
|
---|
| 3103 |
|
---|
| 3104 | return HAL_OK;
|
---|
| 3105 | }
|
---|
| 3106 |
|
---|
| 3107 | /**
|
---|
| 3108 | * @brief Master sends target device address followed by internal memory address for write request.
|
---|
| 3109 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 3110 | * the configuration information for I2C module
|
---|
| 3111 | * @param DevAddress: Target device address
|
---|
| 3112 | * @param MemAddress: Internal memory address
|
---|
| 3113 | * @param MemAddSize: Size of internal memory address
|
---|
| 3114 | * @param Timeout: Timeout duration
|
---|
| 3115 | * @retval HAL status
|
---|
| 3116 | */
|
---|
| 3117 | static HAL_StatusTypeDef I2C_RequestMemoryWrite(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
|
---|
| 3118 | {
|
---|
| 3119 | /* Generate Start */
|
---|
| 3120 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 3121 |
|
---|
| 3122 | /* Wait until SB flag is set */
|
---|
| 3123 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 3124 | {
|
---|
| 3125 | return HAL_TIMEOUT;
|
---|
| 3126 | }
|
---|
| 3127 |
|
---|
| 3128 | /* Send slave address */
|
---|
| 3129 | hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
|
---|
| 3130 |
|
---|
| 3131 | /* Wait until ADDR flag is set */
|
---|
| 3132 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3133 | {
|
---|
| 3134 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3135 | {
|
---|
| 3136 | return HAL_ERROR;
|
---|
| 3137 | }
|
---|
| 3138 | else
|
---|
| 3139 | {
|
---|
| 3140 | return HAL_TIMEOUT;
|
---|
| 3141 | }
|
---|
| 3142 | }
|
---|
| 3143 |
|
---|
| 3144 | /* Clear ADDR flag */
|
---|
| 3145 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 3146 |
|
---|
| 3147 | /* Wait until TXE flag is set */
|
---|
| 3148 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 3149 | {
|
---|
| 3150 | return HAL_TIMEOUT;
|
---|
| 3151 | }
|
---|
| 3152 |
|
---|
| 3153 | /* If Memory address size is 8Bit */
|
---|
| 3154 | if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
|
---|
| 3155 | {
|
---|
| 3156 | /* Send Memory Address */
|
---|
| 3157 | hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
|
---|
| 3158 | }
|
---|
| 3159 | /* If Memory address size is 16Bit */
|
---|
| 3160 | else
|
---|
| 3161 | {
|
---|
| 3162 | /* Send MSB of Memory Address */
|
---|
| 3163 | hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
|
---|
| 3164 |
|
---|
| 3165 | /* Wait until TXE flag is set */
|
---|
| 3166 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 3167 | {
|
---|
| 3168 | return HAL_TIMEOUT;
|
---|
| 3169 | }
|
---|
| 3170 |
|
---|
| 3171 | /* Send LSB of Memory Address */
|
---|
| 3172 | hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
|
---|
| 3173 | }
|
---|
| 3174 |
|
---|
| 3175 | return HAL_OK;
|
---|
| 3176 | }
|
---|
| 3177 |
|
---|
| 3178 | /**
|
---|
| 3179 | * @brief Master sends target device address followed by internal memory address for read request.
|
---|
| 3180 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 3181 | * the configuration information for I2C module
|
---|
| 3182 | * @param DevAddress: Target device address
|
---|
| 3183 | * @param MemAddress: Internal memory address
|
---|
| 3184 | * @param MemAddSize: Size of internal memory address
|
---|
| 3185 | * @param Timeout: Timeout duration
|
---|
| 3186 | * @retval HAL status
|
---|
| 3187 | */
|
---|
| 3188 | static HAL_StatusTypeDef I2C_RequestMemoryRead(I2C_HandleTypeDef *hi2c, uint16_t DevAddress, uint16_t MemAddress, uint16_t MemAddSize, uint32_t Timeout)
|
---|
| 3189 | {
|
---|
| 3190 | /* Enable Acknowledge */
|
---|
| 3191 | hi2c->Instance->CR1 |= I2C_CR1_ACK;
|
---|
| 3192 |
|
---|
| 3193 | /* Generate Start */
|
---|
| 3194 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 3195 |
|
---|
| 3196 | /* Wait until SB flag is set */
|
---|
| 3197 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 3198 | {
|
---|
| 3199 | return HAL_TIMEOUT;
|
---|
| 3200 | }
|
---|
| 3201 |
|
---|
| 3202 | /* Send slave address */
|
---|
| 3203 | hi2c->Instance->DR = I2C_7BIT_ADD_WRITE(DevAddress);
|
---|
| 3204 |
|
---|
| 3205 | /* Wait until ADDR flag is set */
|
---|
| 3206 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3207 | {
|
---|
| 3208 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3209 | {
|
---|
| 3210 | return HAL_ERROR;
|
---|
| 3211 | }
|
---|
| 3212 | else
|
---|
| 3213 | {
|
---|
| 3214 | return HAL_TIMEOUT;
|
---|
| 3215 | }
|
---|
| 3216 | }
|
---|
| 3217 |
|
---|
| 3218 | /* Clear ADDR flag */
|
---|
| 3219 | __HAL_I2C_CLEAR_ADDRFLAG(hi2c);
|
---|
| 3220 |
|
---|
| 3221 | /* Wait until TXE flag is set */
|
---|
| 3222 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 3223 | {
|
---|
| 3224 | return HAL_TIMEOUT;
|
---|
| 3225 | }
|
---|
| 3226 |
|
---|
| 3227 | /* If Memory address size is 8Bit */
|
---|
| 3228 | if(MemAddSize == I2C_MEMADD_SIZE_8BIT)
|
---|
| 3229 | {
|
---|
| 3230 | /* Send Memory Address */
|
---|
| 3231 | hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
|
---|
| 3232 | }
|
---|
| 3233 | /* If Memory address size is 16Bit */
|
---|
| 3234 | else
|
---|
| 3235 | {
|
---|
| 3236 | /* Send MSB of Memory Address */
|
---|
| 3237 | hi2c->Instance->DR = I2C_MEM_ADD_MSB(MemAddress);
|
---|
| 3238 |
|
---|
| 3239 | /* Wait until TXE flag is set */
|
---|
| 3240 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 3241 | {
|
---|
| 3242 | return HAL_TIMEOUT;
|
---|
| 3243 | }
|
---|
| 3244 |
|
---|
| 3245 | /* Send LSB of Memory Address */
|
---|
| 3246 | hi2c->Instance->DR = I2C_MEM_ADD_LSB(MemAddress);
|
---|
| 3247 | }
|
---|
| 3248 |
|
---|
| 3249 | /* Wait until TXE flag is set */
|
---|
| 3250 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_TXE, RESET, Timeout) != HAL_OK)
|
---|
| 3251 | {
|
---|
| 3252 | return HAL_TIMEOUT;
|
---|
| 3253 | }
|
---|
| 3254 |
|
---|
| 3255 | /* Generate Restart */
|
---|
| 3256 | hi2c->Instance->CR1 |= I2C_CR1_START;
|
---|
| 3257 |
|
---|
| 3258 | /* Wait until SB flag is set */
|
---|
| 3259 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_SB, RESET, Timeout) != HAL_OK)
|
---|
| 3260 | {
|
---|
| 3261 | return HAL_TIMEOUT;
|
---|
| 3262 | }
|
---|
| 3263 |
|
---|
| 3264 | /* Send slave address */
|
---|
| 3265 | hi2c->Instance->DR = I2C_7BIT_ADD_READ(DevAddress);
|
---|
| 3266 |
|
---|
| 3267 | /* Wait until ADDR flag is set */
|
---|
| 3268 | if(I2C_WaitOnMasterAddressFlagUntilTimeout(hi2c, I2C_FLAG_ADDR, Timeout) != HAL_OK)
|
---|
| 3269 | {
|
---|
| 3270 | if(hi2c->ErrorCode == HAL_I2C_ERROR_AF)
|
---|
| 3271 | {
|
---|
| 3272 | return HAL_ERROR;
|
---|
| 3273 | }
|
---|
| 3274 | else
|
---|
| 3275 | {
|
---|
| 3276 | return HAL_TIMEOUT;
|
---|
| 3277 | }
|
---|
| 3278 | }
|
---|
| 3279 |
|
---|
| 3280 | return HAL_OK;
|
---|
| 3281 | }
|
---|
| 3282 |
|
---|
| 3283 | /**
|
---|
| 3284 | * @brief DMA I2C master transmit process complete callback.
|
---|
| 3285 | * @param hdma: DMA handle
|
---|
| 3286 | * @retval None
|
---|
| 3287 | */
|
---|
| 3288 | static void I2C_DMAMasterTransmitCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3289 | {
|
---|
| 3290 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3291 |
|
---|
| 3292 | /* Wait until BTF flag is reset */
|
---|
| 3293 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 3294 | {
|
---|
| 3295 | hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
|
---|
| 3296 | }
|
---|
| 3297 |
|
---|
| 3298 | /* Generate Stop */
|
---|
| 3299 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 3300 |
|
---|
| 3301 | /* Disable DMA Request */
|
---|
| 3302 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3303 |
|
---|
| 3304 | hi2c->XferCount = 0;
|
---|
| 3305 |
|
---|
| 3306 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3307 |
|
---|
| 3308 | /* Check if Errors has been detected during transfer */
|
---|
| 3309 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3310 | {
|
---|
| 3311 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3312 | }
|
---|
| 3313 | else
|
---|
| 3314 | {
|
---|
| 3315 | HAL_I2C_MasterTxCpltCallback(hi2c);
|
---|
| 3316 | }
|
---|
| 3317 | }
|
---|
| 3318 |
|
---|
| 3319 | /**
|
---|
| 3320 | * @brief DMA I2C slave transmit process complete callback.
|
---|
| 3321 | * @param hdma: DMA handle
|
---|
| 3322 | * @retval None
|
---|
| 3323 | */
|
---|
| 3324 | static void I2C_DMASlaveTransmitCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3325 | {
|
---|
| 3326 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3327 |
|
---|
| 3328 | /* Wait until AF flag is reset */
|
---|
| 3329 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_AF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 3330 | {
|
---|
| 3331 | hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
|
---|
| 3332 | }
|
---|
| 3333 |
|
---|
| 3334 | /* Clear AF flag */
|
---|
| 3335 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 3336 |
|
---|
| 3337 | /* Disable Address Acknowledge */
|
---|
| 3338 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 3339 |
|
---|
| 3340 | /* Disable DMA Request */
|
---|
| 3341 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3342 |
|
---|
| 3343 | hi2c->XferCount = 0;
|
---|
| 3344 |
|
---|
| 3345 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3346 |
|
---|
| 3347 | /* Check if Errors has been detected during transfer */
|
---|
| 3348 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3349 | {
|
---|
| 3350 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3351 | }
|
---|
| 3352 | else
|
---|
| 3353 | {
|
---|
| 3354 | HAL_I2C_SlaveTxCpltCallback(hi2c);
|
---|
| 3355 | }
|
---|
| 3356 | }
|
---|
| 3357 |
|
---|
| 3358 | /**
|
---|
| 3359 | * @brief DMA I2C master receive process complete callback
|
---|
| 3360 | * @param hdma: DMA handle
|
---|
| 3361 | * @retval None
|
---|
| 3362 | */
|
---|
| 3363 | static void I2C_DMAMasterReceiveCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3364 | {
|
---|
| 3365 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3366 |
|
---|
| 3367 | /* Disable Acknowledge */
|
---|
| 3368 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 3369 |
|
---|
| 3370 | /* Generate Stop */
|
---|
| 3371 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 3372 |
|
---|
| 3373 | /* Disable Last DMA */
|
---|
| 3374 | hi2c->Instance->CR2 &= ~I2C_CR2_LAST;
|
---|
| 3375 |
|
---|
| 3376 | /* Disable DMA Request */
|
---|
| 3377 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3378 |
|
---|
| 3379 | hi2c->XferCount = 0;
|
---|
| 3380 |
|
---|
| 3381 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3382 |
|
---|
| 3383 | /* Check if Errors has been detected during transfer */
|
---|
| 3384 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3385 | {
|
---|
| 3386 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3387 | }
|
---|
| 3388 | else
|
---|
| 3389 | {
|
---|
| 3390 | HAL_I2C_MasterRxCpltCallback(hi2c);
|
---|
| 3391 | }
|
---|
| 3392 | }
|
---|
| 3393 |
|
---|
| 3394 | /**
|
---|
| 3395 | * @brief DMA I2C slave receive process complete callback.
|
---|
| 3396 | * @param hdma: DMA handle
|
---|
| 3397 | * @retval None
|
---|
| 3398 | */
|
---|
| 3399 | static void I2C_DMASlaveReceiveCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3400 | {
|
---|
| 3401 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3402 |
|
---|
| 3403 | /* Wait until STOPF flag is reset */
|
---|
| 3404 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_STOPF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 3405 | {
|
---|
| 3406 | hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
|
---|
| 3407 | }
|
---|
| 3408 |
|
---|
| 3409 | /* Clear STOPF flag */
|
---|
| 3410 | __HAL_I2C_CLEAR_STOPFLAG(hi2c);
|
---|
| 3411 |
|
---|
| 3412 | /* Disable Address Acknowledge */
|
---|
| 3413 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 3414 |
|
---|
| 3415 | /* Disable DMA Request */
|
---|
| 3416 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3417 |
|
---|
| 3418 | hi2c->XferCount = 0;
|
---|
| 3419 |
|
---|
| 3420 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3421 |
|
---|
| 3422 | /* Check if Errors has been detected during transfer */
|
---|
| 3423 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3424 | {
|
---|
| 3425 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3426 | }
|
---|
| 3427 | else
|
---|
| 3428 | {
|
---|
| 3429 | HAL_I2C_SlaveRxCpltCallback(hi2c);
|
---|
| 3430 | }
|
---|
| 3431 | }
|
---|
| 3432 |
|
---|
| 3433 | /**
|
---|
| 3434 | * @brief DMA I2C Memory Write process complete callback
|
---|
| 3435 | * @param hdma: DMA handle
|
---|
| 3436 | * @retval None
|
---|
| 3437 | */
|
---|
| 3438 | static void I2C_DMAMemTransmitCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3439 | {
|
---|
| 3440 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3441 |
|
---|
| 3442 | /* Wait until BTF flag is reset */
|
---|
| 3443 | if(I2C_WaitOnFlagUntilTimeout(hi2c, I2C_FLAG_BTF, RESET, I2C_TIMEOUT_FLAG) != HAL_OK)
|
---|
| 3444 | {
|
---|
| 3445 | hi2c->ErrorCode |= HAL_I2C_ERROR_TIMEOUT;
|
---|
| 3446 | }
|
---|
| 3447 |
|
---|
| 3448 | /* Generate Stop */
|
---|
| 3449 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 3450 |
|
---|
| 3451 | /* Disable DMA Request */
|
---|
| 3452 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3453 |
|
---|
| 3454 | hi2c->XferCount = 0;
|
---|
| 3455 |
|
---|
| 3456 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3457 |
|
---|
| 3458 | /* Check if Errors has been detected during transfer */
|
---|
| 3459 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3460 | {
|
---|
| 3461 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3462 | }
|
---|
| 3463 | else
|
---|
| 3464 | {
|
---|
| 3465 | HAL_I2C_MemTxCpltCallback(hi2c);
|
---|
| 3466 | }
|
---|
| 3467 | }
|
---|
| 3468 |
|
---|
| 3469 | /**
|
---|
| 3470 | * @brief DMA I2C Memory Read process complete callback
|
---|
| 3471 | * @param hdma: DMA handle
|
---|
| 3472 | * @retval None
|
---|
| 3473 | */
|
---|
| 3474 | static void I2C_DMAMemReceiveCplt(DMA_HandleTypeDef *hdma)
|
---|
| 3475 | {
|
---|
| 3476 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3477 |
|
---|
| 3478 | /* Disable Acknowledge */
|
---|
| 3479 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 3480 |
|
---|
| 3481 | /* Generate Stop */
|
---|
| 3482 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 3483 |
|
---|
| 3484 | /* Disable Last DMA */
|
---|
| 3485 | hi2c->Instance->CR2 &= ~I2C_CR2_LAST;
|
---|
| 3486 |
|
---|
| 3487 | /* Disable DMA Request */
|
---|
| 3488 | hi2c->Instance->CR2 &= ~I2C_CR2_DMAEN;
|
---|
| 3489 |
|
---|
| 3490 | hi2c->XferCount = 0;
|
---|
| 3491 |
|
---|
| 3492 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3493 |
|
---|
| 3494 | /* Check if Errors has been detected during transfer */
|
---|
| 3495 | if(hi2c->ErrorCode != HAL_I2C_ERROR_NONE)
|
---|
| 3496 | {
|
---|
| 3497 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3498 | }
|
---|
| 3499 | else
|
---|
| 3500 | {
|
---|
| 3501 | HAL_I2C_MemRxCpltCallback(hi2c);
|
---|
| 3502 | }
|
---|
| 3503 | }
|
---|
| 3504 |
|
---|
| 3505 | /**
|
---|
| 3506 | * @brief DMA I2C communication error callback.
|
---|
| 3507 | * @param hdma: DMA handle
|
---|
| 3508 | * @retval None
|
---|
| 3509 | */
|
---|
| 3510 | static void I2C_DMAError(DMA_HandleTypeDef *hdma)
|
---|
| 3511 | {
|
---|
| 3512 | I2C_HandleTypeDef* hi2c = (I2C_HandleTypeDef*)((DMA_HandleTypeDef*)hdma)->Parent;
|
---|
| 3513 |
|
---|
| 3514 | /* Disable Acknowledge */
|
---|
| 3515 | hi2c->Instance->CR1 &= ~I2C_CR1_ACK;
|
---|
| 3516 |
|
---|
| 3517 | hi2c->XferCount = 0;
|
---|
| 3518 |
|
---|
| 3519 | hi2c->State = HAL_I2C_STATE_READY;
|
---|
| 3520 |
|
---|
| 3521 | hi2c->ErrorCode |= HAL_I2C_ERROR_DMA;
|
---|
| 3522 |
|
---|
| 3523 | HAL_I2C_ErrorCallback(hi2c);
|
---|
| 3524 | }
|
---|
| 3525 |
|
---|
| 3526 | /**
|
---|
| 3527 | * @brief This function handles I2C Communication Timeout.
|
---|
| 3528 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 3529 | * the configuration information for I2C module
|
---|
| 3530 | * @param Flag: specifies the I2C flag to check.
|
---|
| 3531 | * @param Status: The new Flag status (SET or RESET).
|
---|
| 3532 | * @param Timeout: Timeout duration
|
---|
| 3533 | * @retval HAL status
|
---|
| 3534 | */
|
---|
| 3535 | static HAL_StatusTypeDef I2C_WaitOnFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, FlagStatus Status, uint32_t Timeout)
|
---|
| 3536 | {
|
---|
| 3537 | uint32_t tickstart = 0;
|
---|
| 3538 |
|
---|
| 3539 | /* Get tick */
|
---|
| 3540 | tickstart = HAL_GetTick();
|
---|
| 3541 |
|
---|
| 3542 | /* Wait until flag is set */
|
---|
| 3543 | if(Status == RESET)
|
---|
| 3544 | {
|
---|
| 3545 | while(__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
|
---|
| 3546 | {
|
---|
| 3547 | /* Check for the Timeout */
|
---|
| 3548 | if(Timeout != HAL_MAX_DELAY)
|
---|
| 3549 | {
|
---|
| 3550 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 3551 | {
|
---|
| 3552 | hi2c->State= HAL_I2C_STATE_READY;
|
---|
| 3553 |
|
---|
| 3554 | /* Process Unlocked */
|
---|
| 3555 | __HAL_UNLOCK(hi2c);
|
---|
| 3556 |
|
---|
| 3557 | return HAL_TIMEOUT;
|
---|
| 3558 | }
|
---|
| 3559 | }
|
---|
| 3560 | }
|
---|
| 3561 | }
|
---|
| 3562 | else
|
---|
| 3563 | {
|
---|
| 3564 | while(__HAL_I2C_GET_FLAG(hi2c, Flag) != RESET)
|
---|
| 3565 | {
|
---|
| 3566 | /* Check for the Timeout */
|
---|
| 3567 | if(Timeout != HAL_MAX_DELAY)
|
---|
| 3568 | {
|
---|
| 3569 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 3570 | {
|
---|
| 3571 | hi2c->State= HAL_I2C_STATE_READY;
|
---|
| 3572 |
|
---|
| 3573 | /* Process Unlocked */
|
---|
| 3574 | __HAL_UNLOCK(hi2c);
|
---|
| 3575 |
|
---|
| 3576 | return HAL_TIMEOUT;
|
---|
| 3577 | }
|
---|
| 3578 | }
|
---|
| 3579 | }
|
---|
| 3580 | }
|
---|
| 3581 | return HAL_OK;
|
---|
| 3582 | }
|
---|
| 3583 |
|
---|
| 3584 | /**
|
---|
| 3585 | * @brief This function handles I2C Communication Timeout for Master addressing phase.
|
---|
| 3586 | * @param hi2c: pointer to a I2C_HandleTypeDef structure that contains
|
---|
| 3587 | * the configuration information for I2C module
|
---|
| 3588 | * @param Flag: specifies the I2C flag to check.
|
---|
| 3589 | * @param Timeout: Timeout duration
|
---|
| 3590 | * @retval HAL status
|
---|
| 3591 | */
|
---|
| 3592 | static HAL_StatusTypeDef I2C_WaitOnMasterAddressFlagUntilTimeout(I2C_HandleTypeDef *hi2c, uint32_t Flag, uint32_t Timeout)
|
---|
| 3593 | {
|
---|
| 3594 | uint32_t tickstart = 0;
|
---|
| 3595 |
|
---|
| 3596 | /* Get tick */
|
---|
| 3597 | tickstart = HAL_GetTick();
|
---|
| 3598 |
|
---|
| 3599 | while(__HAL_I2C_GET_FLAG(hi2c, Flag) == RESET)
|
---|
| 3600 | {
|
---|
| 3601 | if(__HAL_I2C_GET_FLAG(hi2c, I2C_FLAG_AF) == SET)
|
---|
| 3602 | {
|
---|
| 3603 | /* Generate Stop */
|
---|
| 3604 | hi2c->Instance->CR1 |= I2C_CR1_STOP;
|
---|
| 3605 |
|
---|
| 3606 | /* Clear AF Flag */
|
---|
| 3607 | __HAL_I2C_CLEAR_FLAG(hi2c, I2C_FLAG_AF);
|
---|
| 3608 |
|
---|
| 3609 | hi2c->ErrorCode = HAL_I2C_ERROR_AF;
|
---|
| 3610 | hi2c->State= HAL_I2C_STATE_READY;
|
---|
| 3611 |
|
---|
| 3612 | /* Process Unlocked */
|
---|
| 3613 | __HAL_UNLOCK(hi2c);
|
---|
| 3614 |
|
---|
| 3615 | return HAL_ERROR;
|
---|
| 3616 | }
|
---|
| 3617 |
|
---|
| 3618 | /* Check for the Timeout */
|
---|
| 3619 | if(Timeout != HAL_MAX_DELAY)
|
---|
| 3620 | {
|
---|
| 3621 | if((Timeout == 0)||((HAL_GetTick() - tickstart ) > Timeout))
|
---|
| 3622 | {
|
---|
| 3623 | hi2c->State= HAL_I2C_STATE_READY;
|
---|
| 3624 |
|
---|
| 3625 | /* Process Unlocked */
|
---|
| 3626 | __HAL_UNLOCK(hi2c);
|
---|
| 3627 |
|
---|
| 3628 | return HAL_TIMEOUT;
|
---|
| 3629 | }
|
---|
| 3630 | }
|
---|
| 3631 | }
|
---|
| 3632 | return HAL_OK;
|
---|
| 3633 | }
|
---|
| 3634 |
|
---|
| 3635 | /**
|
---|
| 3636 | * @}
|
---|
| 3637 | */
|
---|
| 3638 |
|
---|
| 3639 | #endif /* HAL_I2C_MODULE_ENABLED */
|
---|
| 3640 |
|
---|
| 3641 | /**
|
---|
| 3642 | * @}
|
---|
| 3643 | */
|
---|
| 3644 |
|
---|
| 3645 | /**
|
---|
| 3646 | * @}
|
---|
| 3647 | */
|
---|
| 3648 |
|
---|
| 3649 | /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|
---|