stm32的温控风扇代码

您好！以下是一个基于STM32的温控风扇代码示例：

#include "stm32f4xx.h"
#include "stm32f4xx_hal.h"

#define FAN_PIN GPIO_PIN_0
#define FAN_PORT GPIOA
#define TEMP_SENSOR_ADC ADC1
#define TEMP_SENSOR_CHANNEL ADC_CHANNEL_0

void SystemClock_Config(void);
void GPIO_Init(void);
void ADC_Init(void);
void TIM_Init(void);

int main(void)
{
    HAL_Init();
    SystemClock_Config();
    GPIO_Init();
    ADC_Init();
    TIM_Init();

    while (1)
    {
        // 启动ADC转换
        HAL_ADC_Start(&TEMP_SENSOR_ADC);
        // 等待转换完成
        HAL_ADC_PollForConversion(&TEMP_SENSOR_ADC, HAL_MAX_DELAY);
        // 获取温度值
        uint16_t tempValue = HAL_ADC_GetValue(&TEMP_SENSOR_ADC);

        // 根据温度值控制风扇
        if (tempValue > 500) // 温度阈值需要根据实际情况调整
        {
            HAL_GPIO_WritePin(FAN_PORT, FAN_PIN, GPIO_PIN_SET); // 打开风扇
        }
        else
        {
            HAL_GPIO_WritePin(FAN_PORT, FAN_PIN, GPIO_PIN_RESET); // 关闭风扇
        }

        // 延时一段时间后再进行下一次温度检测和风扇控制
        HAL_Delay(1000);
    }
}

void SystemClock_Config(void)
{
    RCC_OscInitTypeDef RCC_OscInitStruct;
    RCC_ClkInitTypeDef RCC_ClkInitStruct;

    __HAL_RCC_PWR_CLK_ENABLE();
    __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

    RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_HSI;
    RCC_OscInitStruct.HSIState = RCC_HSI_ON;
    RCC_OscInitStruct.HSICalibrationValue = 16;
    RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
    if (HAL_RCC_OscConfig(&RCC_OscInitStruct) != HAL_OK)
    {
        while (1)
        {
        }
    }

    RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_HCLK | RCC_CLOCKTYPE_SYSCLK | RCC_CLOCKTYPE_PCLK1 | RCC_CLOCKTYPE_PCLK2;
    RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_HSI;
    RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
    RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
    RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
    if (HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0) != HAL_OK)
    {
        while (1)
        {
        }
    }
}

void GPIO_Init(void)
{
    __HAL_RCC_GPIOA_CLK_ENABLE();

    GPIO_InitTypeDef GPIO_InitStruct;

    GPIO_InitStruct.Pin = FAN_PIN;
    GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
    GPIO_InitStruct.Speed = GPIO_SPEED_FREQ_LOW;
    HAL_GPIO_Init(FAN_PORT, &GPIO_InitStruct);
}

void ADC_Init(void)
{
    __HAL_RCC_ADC1_CLK_ENABLE();

    ADC_HandleTypeDef ADC_HandleStruct;

    ADC_HandleStruct.Instance = TEMP_SENSOR_ADC;
    ADC_HandleStruct.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV2;
    ADC_HandleStruct.Init.Resolution = ADC_RESOLUTION_12B;
    ADC_HandleStruct.Init.ScanConvMode = DISABLE;
    ADC_HandleStruct.Init.ContinuousConvMode = DISABLE;
    ADC_HandleStruct.Init.DiscontinuousConvMode = DISABLE;
    ADC_HandleStruct.Init.NbrOfDiscConversion = 0;
    ADC_HandleStruct.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
    ADC_HandleStruct.Init.ExternalTrigConv = ADC_SOFTWARE_START;
    ADC_HandleStruct.Init.DataAlign = ADC_DATAALIGN_RIGHT;
    ADC_HandleStruct.Init.NbrOfConversion = 1;
    ADC_HandleStruct.Init.DMAContinuousRequests = DISABLE;
    ADC_HandleStruct.Init.EOCSelection = ADC_EOC_SINGLE_CONV;

    HAL_ADC_Init(&ADC_HandleStruct);

    ADC_ChannelConfTypeDef ADC_ChannelInitStruct;

    ADC_ChannelInitStruct.Channel = TEMP_SENSOR_CHANNEL;
    ADC_ChannelInitStruct.Rank = 1;
    ADC_ChannelInitStruct.SamplingTime = ADC_SAMPLETIME_84CYCLES;
    ADC_ChannelInitStruct.Offset = 0;

    HAL_ADC_ConfigChannel(&ADC_HandleStruct, &ADC_ChannelInitStruct);
}

void TIM_Init(void)
{
    __HAL_RCC_TIM2_CLK_ENABLE();

    TIM_HandleTypeDef TIM_HandleStruct;

    TIM_HandleStruct.Instance = TIM2;
    TIM_HandleStruct.Init.Prescaler = 84 - 1; // 根据实际情况调整
    TIM_HandleStruct.Init.CounterMode = TIM_COUNTERMODE_UP;
    TIM_HandleStruct.Init.Period = 1000 - 1; // 根据实际情况调整
    TIM_HandleStruct.Init.ClockDivision = TIM_CLOCKDIVISION_DIV1;

    HAL_TIM_Base_Init(&TIM_HandleStruct);
}

这是一个简单的温控风扇代码示例，通过ADC获取温度传感器的值，并根据阈值控制风扇的开关状态。请注意，代码中的引脚和定时器配置需要根据实际硬件情况进行调整。

希望能对您有所帮助！如果还有其他问题，请随时提问。