1 /* 2 * Copyright (c) 2006-2018, 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 */ 10 11 #include "board.h" 12 SystemClock_Config(void)13void SystemClock_Config(void) 14 { 15 RCC_OscInitTypeDef RCC_OscInitStruct = {0}; 16 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; 17 18 /** Initializes the CPU, AHB and APB busses clocks 19 */ 20 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE; 21 RCC_OscInitStruct.HSEState = RCC_HSE_ON; 22 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 23 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; 24 RCC_OscInitStruct.PLL.PLLM = 4; 25 RCC_OscInitStruct.PLL.PLLN = 216; 26 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV6; 27 RCC_OscInitStruct.PLL.PLLQ = 4; 28 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) 29 { 30 Error_Handler(); 31 } 32 /** Initializes the CPU, AHB and APB busses clocks 33 */ 34 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK 35 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; 36 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 37 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 38 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4; 39 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2; 40 41 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK) 42 { 43 Error_Handler(); 44 } 45 } 46 47 48