[270] | 1 | /*******************************************************************************
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| 2 | * DISCLAIMER
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| 3 | * This software is supplied by Renesas Electronics Corporation and is only
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| 4 | * intended for use with Renesas products. No other uses are authorized. This
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| 5 | * software is owned by Renesas Electronics Corporation and is protected under
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| 6 | * all applicable laws, including copyright laws.
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| 7 | * THIS SOFTWARE IS PROVIDED "AS IS" AND RENESAS MAKES NO WARRANTIES REGARDING
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| 8 | * THIS SOFTWARE, WHETHER EXPRESS, IMPLIED OR STATUTORY, INCLUDING BUT NOT
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| 9 | * LIMITED TO WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE
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| 10 | * AND NON-INFRINGEMENT. ALL SUCH WARRANTIES ARE EXPRESSLY DISCLAIMED.
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| 11 | * TO THE MAXIMUM EXTENT PERMITTED NOT PROHIBITED BY LAW, NEITHER RENESAS
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| 12 | * ELECTRONICS CORPORATION NOR ANY OF ITS AFFILIATED COMPANIES SHALL BE LIABLE
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| 13 | * FOR ANY DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES FOR
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| 14 | * ANY REASON RELATED TO THIS SOFTWARE, EVEN IF RENESAS OR ITS AFFILIATES HAVE
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| 15 | * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
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| 16 | * Renesas reserves the right, without notice, to make changes to this software
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| 17 | * and to discontinue the availability of this software. By using this software,
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| 18 | * you agree to the additional terms and conditions found by accessing the
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| 19 | * following link:
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| 20 | * http://www.renesas.com/disclaimer
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| 21 | * Copyright (C) 2012 - 2015 Renesas Electronics Corporation. All rights reserved.
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| 22 | *******************************************************************************/
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| 23 | /**************************************************************************//**
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| 24 | * @file nvic_wrapper.c
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| 25 | * $Rev: $
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| 26 | * $Date:: $
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| 27 | * @brief Wrapper between NVIC(for Cortex-M) and GIC(for Cortex-A9)
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| 28 | ******************************************************************************/
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| 29 |
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| 30 | /******************************************************************************
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| 31 | Includes <System Includes> , "Project Includes"
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| 32 | ******************************************************************************/
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| 33 | #include "MBRZA1H.h"
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| 34 | #include "wdt_iodefine.h"
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| 35 | #include "nvic_wrapper.h"
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| 36 | #include "gic.h"
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| 37 |
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| 38 | /******************************************************************************
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| 39 | Typedef definitions
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| 40 | ******************************************************************************/
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| 41 |
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| 42 | /******************************************************************************
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| 43 | Macro definitions
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| 44 | ******************************************************************************/
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| 45 | #define PRIO_BITS (7) /* Set binary point to 0 in gic.c */
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| 46 | #define WDT_WTCNT_WRITE (0x5A00)
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| 47 | #define WDT_WTCSR_WRITE (0xA500)
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| 48 | #define WDT_WRCSR_WOVF_WRITE (0xA500)
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| 49 | #define WDT_WRCSR_RSTE_WRITE (0x5A00)
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| 50 |
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| 51 | /******************************************************************************
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| 52 | Imported global variables and functions (from other files)
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| 53 | ******************************************************************************/
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| 54 |
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| 55 | /******************************************************************************
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| 56 | Exported global variables and functions (to be accessed by other files)
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| 57 | ******************************************************************************/
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| 58 |
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| 59 | /******************************************************************************
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| 60 | Private global variables and functions
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| 61 | ******************************************************************************/
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| 62 |
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| 63 |
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| 64 |
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| 65 | /* ########################## NVIC functions #################################### */
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| 66 | void NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
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| 67 | {
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| 68 | GIC_SetBinaryPoint(PriorityGroup);
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| 69 | }
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| 70 |
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| 71 |
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| 72 | uint32_t NVIC_GetPriorityGrouping(void)
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| 73 | {
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| 74 | return GIC_GetBinaryPoint(0);
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| 75 | }
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| 76 |
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| 77 |
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| 78 | void NVIC_EnableIRQ(IRQn_Type IRQn)
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| 79 | {
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| 80 | GIC_EnableIRQ(IRQn);
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| 81 | }
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| 82 |
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| 83 |
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| 84 | void NVIC_DisableIRQ(IRQn_Type IRQn)
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| 85 | {
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| 86 | GIC_DisableIRQ(IRQn);
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| 87 | }
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| 88 |
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| 89 |
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| 90 | uint32_t NVIC_GetPendingIRQ(IRQn_Type IRQn)
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| 91 | {
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| 92 | uint32_t pending;
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| 93 |
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| 94 | pending = GIC_GetIRQStatus(IRQn);
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| 95 | pending = (pending & 0x00000001);
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| 96 |
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| 97 | return pending;
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| 98 | }
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| 99 |
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| 100 |
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| 101 | void NVIC_SetPendingIRQ(IRQn_Type IRQn)
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| 102 | {
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| 103 | GIC_SetPendingIRQ(IRQn);
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| 104 | }
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| 105 |
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| 106 |
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| 107 | void NVIC_ClearPendingIRQ(IRQn_Type IRQn)
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| 108 | {
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| 109 | GIC_ClearPendingIRQ(IRQn);
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| 110 | }
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| 111 |
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| 112 |
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| 113 | uint32_t NVIC_GetActive(IRQn_Type IRQn)
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| 114 | {
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| 115 | uint32_t active;
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| 116 |
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| 117 | active = GIC_GetIRQStatus(IRQn);
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| 118 | active = ((active >> 1) & 0x00000001);
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| 119 |
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| 120 | return active;
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| 121 | }
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| 122 |
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| 123 |
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| 124 | void NVIC_SetPriority(IRQn_Type IRQn, uint32_t priority)
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| 125 | {
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| 126 | GIC_SetPriority(IRQn, (priority << 3));
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| 127 | }
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| 128 |
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| 129 |
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| 130 | uint32_t NVIC_GetPriority(IRQn_Type IRQn)
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| 131 | {
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| 132 | uint32_t priority_field;
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| 133 |
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| 134 | priority_field = GIC_GetPriority(IRQn);
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| 135 | priority_field = (priority_field >> 3);
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| 136 | return priority_field;
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| 137 | }
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| 138 |
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| 139 |
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| 140 | uint32_t NVIC_EncodePriority (uint32_t PriorityGroup, uint32_t PreemptPriority, uint32_t SubPriority)
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| 141 | {
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| 142 | uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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| 143 | uint32_t PreemptPriorityBits;
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| 144 | uint32_t SubPriorityBits;
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| 145 |
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| 146 | PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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| 147 | SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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| 148 |
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| 149 | return (
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| 150 | ((PreemptPriority & ((1 << (PreemptPriorityBits)) - 1)) << SubPriorityBits) |
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| 151 | ((SubPriority & ((1 << (SubPriorityBits )) - 1)))
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| 152 | );
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| 153 | }
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| 154 |
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| 155 |
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| 156 | void NVIC_DecodePriority (uint32_t Priority, uint32_t PriorityGroup, uint32_t* pPreemptPriority, uint32_t* pSubPriority)
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| 157 | {
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| 158 | uint32_t PriorityGroupTmp = (PriorityGroup & 0x07); /* only values 0..7 are used */
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| 159 | uint32_t PreemptPriorityBits;
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| 160 | uint32_t SubPriorityBits;
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| 161 |
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| 162 | PreemptPriorityBits = ((7 - PriorityGroupTmp) > PRIO_BITS) ? PRIO_BITS : 7 - PriorityGroupTmp;
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| 163 | SubPriorityBits = ((PriorityGroupTmp + PRIO_BITS) < 7) ? 0 : PriorityGroupTmp - 7 + PRIO_BITS;
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| 164 |
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| 165 | *pPreemptPriority = (Priority >> SubPriorityBits) & ((1 << (PreemptPriorityBits)) - 1);
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| 166 | *pSubPriority = (Priority ) & ((1 << (SubPriorityBits )) - 1);
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| 167 | }
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| 168 |
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| 169 | void NVIC_SystemReset(void)
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| 170 | {
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| 171 | uint16_t reg;
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| 172 | uint8_t dummy_read;
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| 173 | /* Use Watch Dog Timer to system reset */
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| 174 |
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| 175 | /* Set WT/IT bit of WTCSR to 1 = Watch Dog */
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| 176 | /* CLK = 000, 1xP0phi(=33.3333MHz) = 7.7us */
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| 177 | reg = (WDT_WTCSR_WRITE | 0x0058);
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| 178 | WDTWTCSR = reg;
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| 179 |
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| 180 | /* Clear Count reg */
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| 181 | reg = (WDT_WTCNT_WRITE | 0x0000);
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| 182 | WDTWTCNT = reg;
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| 183 |
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| 184 | /* Clear WOVF flag */
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| 185 | dummy_read = WDTWRCSR;
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| 186 | reg = (WDT_WRCSR_WOVF_WRITE | (dummy_read & 0x0000));
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| 187 | WDTWRCSR = reg;
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| 188 | /* Enable Internal Reset */
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| 189 | reg = (WDT_WRCSR_RSTE_WRITE | 0x005F);
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| 190 | WDTWRCSR = reg;
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| 191 |
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| 192 | /* Watch Dog start */
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| 193 | reg = (WDT_WTCSR_WRITE | 0x0078);
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| 194 | WDTWTCSR = reg;
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| 195 |
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| 196 | while(1); /* wait Internal Reset */
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| 197 | }
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| 198 |
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| 199 | /* ################################## SysTick function ############################################ */
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| 200 | uint32_t SysTick_Config(uint32_t ticks)
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| 201 | {
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| 202 | /* Not support this function */
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| 203 | /* Use mbed Ticker */
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| 204 | return (1); /* impossible */
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| 205 | }
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| 206 |
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| 207 |
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| 208 | /* ##################################### Debug In/Output function ########################################### */
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| 209 | uint32_t ITM_SendChar (uint32_t ch)
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| 210 | {
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| 211 | /* Not support this function */
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| 212 | /* Use mbed Serial */
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| 213 | return (ch);
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| 214 | }
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| 215 |
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| 216 |
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| 217 | int32_t ITM_ReceiveChar (void) {
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| 218 | /* Not support this function */
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| 219 | /* Use mbed Serial */
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| 220 | return (-1); /* no character available */
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| 221 | }
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| 222 |
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| 223 |
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| 224 | int32_t ITM_CheckChar (void) {
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| 225 | /* Not support this function */
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| 226 | /* Use mbed Serial */
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| 227 | return (0); /* no character available */
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| 228 | }
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| 229 |
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