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 */ 10 11 #include <board.h> 12 #include <drv_common.h> 13 14 /** 15 * @brief System Clock Configuration 16 * @retval None 17 */ SystemClock_Config(void)18void SystemClock_Config(void) 19 { 20 RCC_OscInitTypeDef RCC_OscInitStruct = {0}; 21 RCC_ClkInitTypeDef RCC_ClkInitStruct = {0}; 22 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0}; 23 24 /** Configure the main internal regulator output voltage 25 */ 26 __HAL_RCC_PWR_CLK_ENABLE(); 27 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); 28 /** Initializes the CPU, AHB and APB busses clocks 29 */ 30 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_LSI|RCC_OSCILLATORTYPE_HSE; 31 RCC_OscInitStruct.HSEState = RCC_HSE_BYPASS; 32 RCC_OscInitStruct.LSIState = RCC_LSI_ON; 33 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 34 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE; 35 RCC_OscInitStruct.PLL.PLLM = 8; 36 RCC_OscInitStruct.PLL.PLLN = 384; 37 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV4; 38 RCC_OscInitStruct.PLL.PLLQ = 8; 39 RCC_OscInitStruct.PLL.PLLR = 2; 40 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) 41 { 42 Error_Handler(); 43 } 44 /** Initializes the CPU, AHB and APB busses clocks 45 */ 46 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK 47 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; 48 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 49 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 50 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV2; 51 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; 52 53 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) 54 { 55 Error_Handler(); 56 } 57 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_RTC|RCC_PERIPHCLK_CLK48; 58 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI; 59 PeriphClkInitStruct.Clk48ClockSelection = RCC_CLK48CLKSOURCE_PLLQ; 60 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) 61 { 62 Error_Handler(); 63 } 64 } 65