stm32f0酒精传感器代码

以下是基于STM32F0的MQ-3酒精传感器的简单代码示例：

#include "stm32f0xx.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define ADC_CONVERTED_DATA_BUFFER_SIZE   ((uint32_t)  1)   /* Size of array aADCxConvertedData[] */

ADC_InitTypeDef     ADC_InitStructure;
ADC_ChannelConfTypeDef   ADC_ChannelConfStruct;
GPIO_InitTypeDef    GPIO_InitStructure;
NVIC_InitTypeDef    NVIC_InitStructure;

__IO uint16_t ADC_ConvertedValue;

int main(void)
{
  /* Enable the HSI oscillator */
  RCC_HSICmd(ENABLE);

  /* Check that HSI oscillator is ready */
  while(RCC_GetFlagStatus(RCC_FLAG_HSIRDY) == RESET);

  /* Configure ADC3 Channel4 as analog input */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
  RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOA, ENABLE);

  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_4;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* ADCs DeInit */
  ADC_DeInit(ADC1);

  /* Initialize ADC structure */
  ADC_StructInit(&ADC_InitStructure);

  /* Configure the ADC1 in continuous mode */
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_ScanDirection = ADC_ScanDirection_Upward;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* Convert the ADC1 Channel 4 with 55.5 Cycles as sampling time */
  ADC_ChannelConfStruct.ADC_Channel = ADC_Channel_4;
  ADC_ChannelConfStruct.ADC_SampleTime = ADC_SampleTime_55_5Cycles;
  ADC_ChannelConfStruct.ADC_Offset = 0;
  ADC_ChannelConfStruct.ADC_Resolution = ADC_Resolution_12b;

  ADC_Init(ADC1, &ADC_InitStructure);
  ADC_ChannelConfig(ADC1, &ADC_ChannelConfStruct);

  /* Enable the ADC1 */
  ADC_Cmd(ADC1, ENABLE);

  /* Wait until the ADC1 is ready */
  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_ADONS) == RESET);

  /* Start the ADC1 Software Conversion */
  ADC_StartOfConversion(ADC1);

  /* Wait for the conversion to complete */
  while(ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC) == RESET);

  /* Get the conversion value */
  ADC_ConvertedValue = ADC_GetConversionValue(ADC1);

  /* Infinite loop */
  while(1){}
}

需要注意的是，此代码仅仅演示了如何读取ADC的数据，并没有对传感器的数据进行处理。因此，您需要根据自己的需要进行修改和完善。