1 /* 2 * Copyright (c) 2006-2021, RT-Thread Development Team 3 * 4 * SPDX-License-Identifier: Apache-2.0 5 * 6 * Change Logs: 7 * Date Author Notes 8 * 2018-11-06 SummerGift first version 9 * 2019-10-03 xuzhuoyi add stm32g431-st-nucleo bsp 10 */ 11 12 #include <board.h> 13 #include <drv_common.h> 14 SystemClock_Config(void)15void SystemClock_Config(void) 16 { 17 RCC_OscInitTypeDef RCC_OscInitStruct = {0}; 18 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; 19 RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; 20 21 /** Configure the main internal regulator output voltage 22 */ 23 HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1_BOOST); 24 /** Initializes the CPU, AHB and APB busses clocks 25 */ 26 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI; 27 RCC_OscInitStruct.HSIState = RCC_HSI_ON; 28 RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; 29 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 30 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; 31 RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV4; 32 RCC_OscInitStruct.PLL.PLLN = 85; 33 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; 34 RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; 35 RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; 36 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) 37 { 38 Error_Handler(); 39 } 40 /** Initializes the CPU, AHB and APB busses clocks 41 */ 42 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK 43 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; 44 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 45 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 46 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; 47 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; 48 49 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_8) != HAL_OK) 50 { 51 Error_Handler(); 52 } 53 /** Initializes the peripherals clocks 54 */ 55 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1; 56 PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2; 57 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) 58 { 59 Error_Handler(); 60 } 61 } 62