高效应用：基于STM32G431的电机控制开发实践

#include "main.h"



// PWM和ADC初始化函数

void SystemClock_Config(void);

static void MX_TIM1_Init(void);

static void MX_ADC1_Init(void);



TIM_HandleTypeDef htim1;

ADC_HandleTypeDef hadc1;



int main(void) {

    HAL_Init();

    SystemClock_Config();



    MX_TIM1_Init();

    MX_ADC1_Init();



    HAL_TIM_PWM_Start(&htim1, TIM_CHANNEL_1);



    uint32_t adc_value = 0;



    while (1) {

        HAL_ADC_Start(&hadc1);

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

            adc_value = HAL_ADC_GetValue(&hadc1);

        }



        // 将ADC值映射到PWM占空比

        __HAL_TIM_SET_COMPARE(&htim1, TIM_CHANNEL_1, adc_value / 16);

        HAL_Delay(10);

    }

}



void SystemClock_Config(void) {

    // 配置系统时钟为170 MHz

    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 = 1;

    RCC_OscInitStruct.PLL.PLLN = 8;

    RCC_OscInitStruct.PLL.PLLP = RCC_PLLP_DIV7;

    RCC_OscInitStruct.PLL.PLLQ = RCC_PLLQ_DIV2;

    RCC_OscInitStruct.PLL.PLLR = RCC_PLLR_DIV2;



    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_DIV1;

    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;



    HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_4);

}



static void MX_TIM1_Init(void) {

    TIM_OC_InitTypeDef sConfigOC = {0};



    htim1.Instance = TIM1;

    htim1.Init.Prescaler = 0;

    htim1.Init.CounterMode = TIM_COUNTERMODE_UP;

    htim1.Init.Period = 1024;

    htim1.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

    htim1.Init.RepetitionCounter = 0;



    HAL_TIM_PWM_Init(&htim1);



    sConfigOC.OCMode = TIM_OCMODE_PWM1;

    sConfigOC.Pulse = 0;

    sConfigOC.OCPolarity = TIM_OCPOLARITY_HIGH;

    sConfigOC.OCFastMode = TIM_OCFAST_DISABLE;



    HAL_TIM_PWM_ConfigChannel(&htim1, &sConfigOC, TIM_CHANNEL_1);

}



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.ScanConvMode = DISABLE;

    hadc1.Init.ContinuousConvMode = DISABLE;

    hadc1.Init.DiscontinuousConvMode = DISABLE;

    hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;

    hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;

    hadc1.Init.NbrOfConversion = 1;



    HAL_ADC_Init(&hadc1);



    sConfig.Channel = ADC_CHANNEL_0;

    sConfig.Rank = 1;

    sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;



    HAL_ADC_ConfigChannel(&hadc1, &sConfig);

}