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 * 2019-03-08 obito0 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 /** Initializes the RCC Oscillators according to the specified parameters 21 * in the RCC_OscInitTypeDef structure. 22 */ 23 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; 24 RCC_OscInitStruct.HSEState = RCC_HSE_ON; 25 RCC_OscInitStruct.HSEPredivValue = RCC_HSE_PREDIV_DIV1; 26 RCC_OscInitStruct.HSIState = RCC_HSI_ON; 27 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 28 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; 29 RCC_OscInitStruct.PLL.PLLMUL = RCC_PLL_MUL9; 30 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) 31 { 32 Error_Handler(); 33 } 34 /** Initializes the CPU, AHB and APB buses clocks 35 */ 36 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK 37 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; 38 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 39 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 40 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; 41 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; 42 43 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) 44 { 45 Error_Handler(); 46 } 47 PeriphClkInit.PeriphClockSelection = RCC_PERIPHCLK_ADC|RCC_PERIPHCLK_USB; 48 PeriphClkInit.AdcClockSelection = RCC_ADCPCLK2_DIV6; 49 PeriphClkInit.UsbClockSelection = RCC_USBCLKSOURCE_PLL_DIV1_5; 50 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInit) != HAL_OK) 51 { 52 Error_Handler(); 53 } 54 } 55