107 lines
3.1 KiB
C
107 lines
3.1 KiB
C
#include "mcu_init.h"
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static void GPIO_CLK_Init(void);
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void board_init(void)
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{
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HAL_Init();
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GPIO_CLK_Init();
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/* 配置系统时钟为180 MHz */
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SystemClock_Config();
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/* 初始化RGB彩灯 */
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LED_GPIO_Config();
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/*初始化USART 配置模式为 115200 8-N-1，中断接收*/
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DEBUG_USART_Config();
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}
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/**
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* @brief 系统时钟配置
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* System Clock source = PLL (HSE)
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* SYSCLK(Hz) = 180000000
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* HCLK(Hz) = 180000000
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* AHB Prescaler = 1
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* APB1 Prescaler = 4
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* APB2 Prescaler = 2
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* HSE Frequency(Hz) = 25000000
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* PLL_M = 25
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* PLL_N = 360
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* PLL_P = 2
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* PLL_Q = 7
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* VDD(V) = 3.3
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* Main regulator output voltage = Scale1 mode
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* Flash Latency(WS) = 5
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* @param 无
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* @retval 无
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*/
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void SystemClock_Config(void)
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{
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RCC_ClkInitTypeDef RCC_ClkInitStruct;
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RCC_OscInitTypeDef RCC_OscInitStruct;
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/* Enable Power Control clock */
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__HAL_RCC_PWR_CLK_ENABLE();
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/* 使能HSE，配置HSE为PLL的时钟源，配置PLL的各种分频因子M N P Q
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* PLLCLK = HSE/M*N/P = 25M / 25 *432 / 2 = 216M
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*/
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__HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);
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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 = 25;
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RCC_OscInitStruct.PLL.PLLN = 360;
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RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV2;
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RCC_OscInitStruct.PLL.PLLQ = 7;
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if(HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
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{
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while(1) {}
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}
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/* 激活 OverDrive 模式 */
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HAL_PWREx_EnableOverDrive();
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/* 选择PLLCLK作为SYSCLK，并配置 HCLK, PCLK1 and PCLK2 的时钟分频因子
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* SYSCLK = PLLCLK = 180M
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* HCLK = SYSCLK / 1 = 180M
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* PCLK2 = SYSCLK / 2 = 90M
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* PCLK1 = SYSCLK / 4 = 45M
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*/
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RCC_ClkInitStruct.ClockType = (RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2);
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RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;
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RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
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RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;
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RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;
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if(HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5) != HAL_OK)
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{
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while(1) {}
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}
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HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);
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HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);
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/* SysTick_IRQn interrupt configuration */
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HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
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}
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/**
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* @brief GPIO Initialization Function
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* @param None
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* @retval None
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*/
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static void GPIO_CLK_Init(void)
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{
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/* GPIO Ports Clock Enable */
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__HAL_RCC_GPIOH_CLK_ENABLE();
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__HAL_RCC_GPIOC_CLK_ENABLE();
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__HAL_RCC_GPIOA_CLK_ENABLE();
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__HAL_RCC_GPIOB_CLK_ENABLE();
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__HAL_RCC_GPIOG_CLK_ENABLE();
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__HAL_RCC_GPIOI_CLK_ENABLE();
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}
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