STM32H723之深度探索：高性能嵌入式开发指南

#include "main.h"



// 定义外设句柄

UART_HandleTypeDef huart3;

ADC_HandleTypeDef hadc1;



void SystemClock_Config(void);

static void MX_GPIO_Init(void);

static void MX_USART3_UART_Init(void);

static void MX_ADC1_Init(void);



int main(void) {

    HAL_Init();

    SystemClock_Config();

    MX_GPIO_Init();

    MX_USART3_UART_Init();

    MX_ADC1_Init();



    char msg[50];

    uint32_t adc_value;



    while (1) {

        // 开始ADC转换

        HAL_ADC_Start(&hadc1);

        if (HAL_ADC_PollForConversion(&hadc1, 1000) == HAL_OK) {

            adc_value = HAL_ADC_GetValue(&hadc1);

            // 格式化输出数据到串口

            sprintf(msg, "ADC Value: %lu\r\n", adc_value);

            HAL_UART_Transmit(&huart3, (uint8_t*)msg, strlen(msg), HAL_MAX_DELAY);

        }

        HAL_ADC_Stop(&hadc1);

        HAL_Delay(100);

    }

}



// 系统时钟配置

void SystemClock_Config(void) {

    RCC_OscInitTypeDef RCC_OscInitStruct = {0};

    RCC_ClkInitTypeDef RCC_ClkInitStruct = {0};



    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSE;

    RCC_OscInitStruct.HSEState = RCC_HSE_ON;

    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_ON;

    RCC_OscInitStruct.PLL.PLLSource = RCC_PLLSOURCE_HSE;

    RCC_OscInitStruct.PLL.PLLM = 5;

    RCC_OscInitStruct.PLL.PLLN = 280;

    RCC_OscInitStruct.PLL.PLLP = 2;

    RCC_OscInitStruct.PLL.PLLQ = 7;

    RCC_OscInitStruct.PLL.PLLR = 2;

    HAL_RCC_OscConfig(&RCC_OscInitStruct);



    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;

    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_PLLCLK;

    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;

    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV4;

    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV2;



    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_5);

}



// GPIO初始化

static void MX_GPIO_Init(void) {

    __HAL_RCC_GPIOB_CLK_ENABLE();

}



// UART初始化

static void MX_USART3_UART_Init(void) {

    huart3.Instance = USART3;

    huart3.Init.BaudRate = 115200;

    huart3.Init.WordLength = UART_WORDLENGTH_8B;

    huart3.Init.StopBits = UART_STOPBITS_1;

    huart3.Init.Parity = UART_PARITY_NONE;

    huart3.Init.Mode = UART_MODE_TX_RX;

    huart3.Init.HwFlowCtl = UART_HWCONTROL_NONE;

    huart3.Init.OverSampling = UART_OVERSAMPLING_16;

    HAL_UART_Init(&huart3);

}



// ADC初始化

static void MX_ADC1_Init(void) {

    ADC_ChannelConfTypeDef sConfig = {0};



    hadc1.Instance = ADC1;

    hadc1.Init.ClockPrescaler = ADC_CLOCK_SYNC_PCLK_DIV4;

    hadc1.Init.Resolution = ADC_RESOLUTION_12B;

    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;

    hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;

    hadc1.Init.ContinuousConvMode = DISABLE;

    hadc1.Init.NbrOfConversion = 1;

    HAL_ADC_Init(&hadc1);



    sConfig.Channel = ADC_CHANNEL_0;

    sConfig.Rank = ADC_REGULAR_RANK_1;

    sConfig.SamplingTime = ADC_SAMPLETIME_47CYCLES_5;

    HAL_ADC_ConfigChannel(&hadc1, &sConfig);

}