STM32F407水位传感器代码

以下是水位传感器的代码，适用于STM32F407芯片：

#include "stm32f4xx.h"
#include "stm32f4xx_gpio.h"
#include "stm32f4xx_rcc.h"

#define SENSOR_PORT GPIOA
#define SENSOR_PIN  GPIO_Pin_0
#define ADC_CHANNEL ADC_Channel_0

void ADC_Configuration(void);
uint16_t ADC_Read(void);

int main(void)
{
  ADC_Configuration();
  
  while(1)
  {
    uint16_t adc_value = ADC_Read();
    float voltage = (adc_value / 4095.0) * 3.3; //计算电压值
    float water_level = voltage * 10; //计算水位值
  }
}

void ADC_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;
  ADC_InitTypeDef ADC_InitStructure;
  RCC_AHB1PeriphClockCmd(RCC_AHB1Periph_GPIOA, ENABLE);
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1, ENABLE);
  
  //配置GPIO
  GPIO_InitStructure.GPIO_Pin = SENSOR_PIN;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AN;
  GPIO_InitStructure.GPIO_PuPd = GPIO_PuPd_NOPULL;
  GPIO_Init(SENSOR_PORT, &GPIO_InitStructure);
  
  //ADC配置
  ADC_InitStructure.ADC_Resolution = ADC_Resolution_12b;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;
  ADC_InitStructure.ADC_ExternalTrigConvEdge = ADC_ExternalTrigConvEdge_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfConversion = 1;
  ADC_Init(ADC1, &ADC_InitStructure);
  
  //ADC通道配置
  ADC_RegularChannelConfig(ADC1, ADC_CHANNEL, 1, ADC_SampleTime_84Cycles);
  
  //启动ADC转换
  ADC_Cmd(ADC1, ENABLE);
}

uint16_t ADC_Read(void)
{
  ADC_SoftwareStartConv(ADC1);
  while(!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC));
  return ADC_GetConversionValue(ADC1);
}

这段代码通过ADC读取水位传感器的电压值，并通过一定计算得到水位值。需要注意的是，具体的计算方式可能需要根据传感器的型号、使用环境等因素进行调整。