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 RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0}; 18 19 /** Configure LSE Drive Capability 20 */ 21 HAL_PWR_EnableBkUpAccess(); 22 __HAL_RCC_LSEDRIVE_CONFIG(RCC_LSEDRIVE_LOW); 23 /** Configure the main internal regulator output voltage 24 */ 25 __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1); 26 /** Initializes the RCC Oscillators according to the specified parameters 27 * in the RCC_OscInitTypeDef structure. 28 */ 29 RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI|RCC_OSCILLATORTYPE_LSI1 30 |RCC_OSCILLATORTYPE_HSE|RCC_OSCILLATORTYPE_LSE 31 |RCC_OSCILLATORTYPE_MSI; 32 RCC_OscInitStruct.HSEState = RCC_HSE_ON; 33 RCC_OscInitStruct.LSEState = RCC_LSE_ON; 34 RCC_OscInitStruct.HSIState = RCC_HSI_ON; 35 RCC_OscInitStruct.MSIState = RCC_MSI_ON; 36 RCC_OscInitStruct.HSICalibrationValue = RCC_HSICALIBRATION_DEFAULT; 37 RCC_OscInitStruct.MSICalibrationValue = RCC_MSICALIBRATION_DEFAULT; 38 RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_6; 39 RCC_OscInitStruct.LSIState = RCC_LSI_ON; 40 RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON; 41 RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_MSI; 42 RCC_OscInitStruct.PLL.PLLM = RCC_PLLM_DIV1; 43 RCC_OscInitStruct.PLL.PLLN = 32; 44 RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2; 45 RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2; 46 RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2; 47 if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK) 48 { 49 Error_Handler(); 50 } 51 /** Configure the SYSCLKSource, HCLK, PCLK1 and PCLK2 clocks dividers 52 */ 53 RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK4|RCC_CLOCKTYPE_HCLK2 54 |RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK 55 |RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2; 56 RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK; 57 RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1; 58 RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1; 59 RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1; 60 RCC_ClkInitStruct.AHBCLK2Divider = RCC_SYSCLK_DIV2; 61 RCC_ClkInitStruct.AHBCLK4Divider = RCC_SYSCLK_DIV1; 62 63 if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_3) != HAL_OK) 64 { 65 Error_Handler(); 66 } 67 /** Initializes the peripherals clocks 68 */ 69 PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_SMPS|RCC_PERIPHCLK_RTC 70 |RCC_PERIPHCLK_USART1|RCC_PERIPHCLK_LPUART1 71 |RCC_PERIPHCLK_USB|RCC_PERIPHCLK_ADC; 72 PeriphClkInitStruct.PLLSAI1.PLLN = 24; 73 PeriphClkInitStruct.PLLSAI1.PLLP = RCC_PLLP_DIV2; 74 PeriphClkInitStruct.PLLSAI1.PLLQ = RCC_PLLQ_DIV2; 75 PeriphClkInitStruct.PLLSAI1.PLLR = RCC_PLLR_DIV2; 76 PeriphClkInitStruct.PLLSAI1.PLLSAI1ClockOut = RCC_PLLSAI1_USBCLK|RCC_PLLSAI1_ADCCLK; 77 PeriphClkInitStruct.Usart1ClockSelection = RCC_USART1CLKSOURCE_PCLK2; 78 PeriphClkInitStruct.Lpuart1ClockSelection = RCC_LPUART1CLKSOURCE_PCLK1; 79 PeriphClkInitStruct.UsbClockSelection = RCC_USBCLKSOURCE_PLLSAI1; 80 PeriphClkInitStruct.AdcClockSelection = RCC_ADCCLKSOURCE_PLLSAI1; 81 PeriphClkInitStruct.RTCClockSelection = RCC_RTCCLKSOURCE_LSI; 82 PeriphClkInitStruct.SmpsClockSelection = RCC_SMPSCLKSOURCE_HSI; 83 PeriphClkInitStruct.SmpsDivSelection = RCC_SMPSCLKDIV_RANGE1; 84 if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK) 85 { 86 Error_Handler(); 87 } 88 /* USER CODE BEGIN Smps */ 89 90 /* USER CODE END Smps */ 91 /** Enable MSI Auto calibration 92 */ 93 HAL_RCCEx_EnableMSIPLLMode(); 94 } 95