source: asp3_wo_tecs/trunk/target/nucleo_f401re_gcc/stm32fcube/systemclock_config.c@ 303

Last change on this file since 303 was 303, checked in by ertl-honda, 7 years ago

nucleo_f401re依存部の追加
File size: 4.7 KB
Line 
1/**
2 ******************************************************************************
3 * @file Templates/Src/main.c
4 * @author MCD Application Team
5 * @version V1.1.2
6 * @date 09-October-2015
7 * @brief Main program body
8 ******************************************************************************
9 * @attention
10 *
11 * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
12 *
13 * Redistribution and use in source and binary forms, with or without modification,
14 * are permitted provided that the following conditions are met:
15 * 1. Redistributions of source code must retain the above copyright notice,
16 * this list of conditions and the following disclaimer.
17 * 2. Redistributions in binary form must reproduce the above copyright notice,
18 * this list of conditions and the following disclaimer in the documentation
19 * and/or other materials provided with the distribution.
20 * 3. Neither the name of STMicroelectronics nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
25 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
27 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
30 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
31 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34 *
35 ******************************************************************************
36 */
37
38/* Includes ------------------------------------------------------------------*/
39#include "stm32f4xx_hal.h"
40#include "stm32f4xx_nucleo.h"
41
42extern void Error_Handler();
43
44/**
45 * @brief System Clock Configuration
46 * The system Clock is configured as follow :
47 * System Clock source = PLL (HSI)
48 * SYSCLK(Hz) = 84000000
49 * HCLK(Hz) = 84000000
50 * AHB Prescaler = 1
51 * APB1 Prescaler = 2
52 * APB2 Prescaler = 1
53 * HSI Frequency(Hz) = 16000000
54 * PLL_M = 16
55 * PLL_N = 336
56 * PLL_P = 4
57 * PLL_Q = 7
58 * VDD(V) = 3.3
59 * Main regulator output voltage = Scale2 mode
60 * Flash Latency(WS) = 2
61 * @param None
62 * @retval None
63 */
64void SystemClock_Config(void)
65{
66 RCC_ClkInitTypeDef RCC_ClkInitStruct;
67 RCC_OscInitTypeDef RCC_OscInitStruct;
68
69 /* Enable Power Control clock */
70 __HAL_RCC_PWR_CLK_ENABLE();
71
72 /* The voltage scaling allows optimizing the power consumption when the device is
73 clocked below the maximum system frequency, to update the voltage scaling value
74 regarding system frequency refer to product datasheet. */
75 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE2);
76
77 /* Enable HSI Oscillator and activate PLL with HSI as source */
78 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
79 RCC_OscInitStruct.HSIState = RCC_HSI_ON;
80 RCC_OscInitStruct.HSICalibrationValue = 0x10;
81 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
82 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI;
83 RCC_OscInitStruct.PLL.PLLM = 16;
84 RCC_OscInitStruct.PLL.PLLN = 336;
85 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4;
86 RCC_OscInitStruct.PLL.PLLQ = 7;
87 if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
88 {
89 Error_Handler();
90 }
91
92 /* Select PLL as system clock source and configure the HCLK, PCLK1 and PCLK2
93 clocks dividers */
94 RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
95 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
96 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
97 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2;
98 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
99 if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
100 {
101 Error_Handler();
102 }
103}
104
105/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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