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 * 2020-7-1 NU-LL first version 9 */ 10 11 #include <board.h> 12 #include <drv_common.h> 13 SystemClock_Config(void)14void SystemClock_Config(void) 15 { 16 RCC_OscInitTypeDef RCC_OscInitStruct = {0}; 17 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; 18 RCC_PeriphCLKInitTypeDef PeriphClkInit = {0}; 19 20 /** Configure the main internal regulator output voltage 21 */ 22 HAL_PWREx_ControlVoltageScaling(PWR_REGULATOR_VOLTAGE_SCALE1); 23 /** Initializes the CPU, AHB and APB busses clocks 24 */ 25 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI; 26 RCC_OscInitStruct.HSIState = RCC_HSI_ON; 27 RCC_OscInitStruct.HSIDiv = RCC_HSI_DIV1; 28 RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; 29 RCC_OscInitStruct.LSIState = RCC_LSI_ON; 30 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 31 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSI; 32 RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; 33 RCC_OscInitStruct.PLL.PLLN = 8; 34 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_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; 44 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 45 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 46 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; 47 48 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) 49 { 50 Error_Handler(); 51 } 52 /** Initializes the peripherals clocks 53 */ 54 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_USART2 55 |RCC_PERIPHCLK_ADC; 56 PeriphClkInit.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK1; 57 PeriphClkInit.Usart2ClockSelection = RCC_USART2CLKSOURCE_PCLK1; 58 PeriphClkInit.AdcClockSelection = RCC_ADCCLKSOURCE_SYSCLK; 59 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) 60 { 61 Error_Handler(); 62 } 63 } 64