73 lines
2.3 KiB
C
73 lines
2.3 KiB
C
/*
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* Copyright (c) 2006-2018, RT-Thread Development Team
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*
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* SPDX-License-Identifier: Apache-2.0
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*
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* Change Logs:
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* Date Author Notes
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* 2018-11-06 SummerGift first version
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*/
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#include "board.h"
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void SystemClock_Config(void)
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{
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RCC_OscInitTypeDef RCC_OscInitStruct = {0};
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RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};
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RCC_PeriphCLKInitTypeDef PeriphClkInitStruct = {0};
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/**Supply configuration update enable
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*/
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MODIFY_REG(PWR->CR3, PWR_CR3_SCUEN, 0);
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/**Configure the main internal regulator output voltage
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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while ((PWR->D3CR & (PWR_D3CR_VOSRDY)) != PWR_D3CR_VOSRDY)
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{
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}
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/**Initializes the CPU, AHB and APB busses clocks
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*/
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RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;
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RCC_OscInitStruct.HSEState = RCC_HSE_ON;
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RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;
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RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;
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RCC_OscInitStruct.PLL.PLLM = 5;
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RCC_OscInitStruct.PLL.PLLN = 160;
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RCC_OscInitStruct.PLL.PLLP = 2;
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RCC_OscInitStruct.PLL.PLLQ = 2;
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RCC_OscInitStruct.PLL.PLLR = 2;
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RCC_OscInitStruct.PLL.PLLRGE = RCC_PLL1VCIRANGE_2;
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RCC_OscInitStruct.PLL.PLLVCOSEL = RCC_PLL1VCOWIDE;
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RCC_OscInitStruct.PLL.PLLFRACN = 0;
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if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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/**Initializes the CPU, AHB and APB busses clocks
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*/
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RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK|RCC_CLOCKTYPE_SYSCLK
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|RCC_CLOCKTYPE_PCLK1|RCC_CLOCKTYPE_PCLK2
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|RCC_CLOCKTYPE_D3PCLK1|RCC_CLOCKTYPE_D1PCLK1;
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.SYSCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_HCLK_DIV2;
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RCC_ClkInitStruct.APB3CLKDivider = RCC_APB3_DIV2;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_APB1_DIV2;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_APB2_DIV2;
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RCC_ClkInitStruct.APB4CLKDivider = RCC_APB4_DIV2;
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if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_2) != HAL_OK)
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{
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Error_Handler();
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}
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PeriphClkInitStruct.PeriphClockSelection = RCC_PERIPHCLK_USART1;
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PeriphClkInitStruct.Usart16ClockSelection = RCC_USART16CLKSOURCE_D2PCLK2;
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if (HAL_RCCEx_PeriphCLKConfig(&PeriphClkInitStruct) != HAL_OK)
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{
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Error_Handler();
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}
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}
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