测量STM32F103C8T6智能小车锂电池电量的代码

在STM32F103C8T6智能小车中测量锂电池电量需要使用模拟输入通道，具体实现可以参考以下代码：

#include "stm32f10x.h"

void ADC_Configuration(void)
{
  ADC_InitTypeDef ADC_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Configure PB0 (ADC Channel8) as analog input -------------------------*/
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOB, &GPIO_InitStructure);

  /* Enable peripheral clocks ------------------------------------------------*/
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1 | RCC_APB2Periph_GPIOB, ENABLE);

  /* ADC1 configuration ------------------------------------------------------*/
  ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;
  ADC_InitStructure.ADC_ScanConvMode = DISABLE;
  ADC_InitStructure.ADC_ContinuousConvMode = DISABLE;
  ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;
  ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;
  ADC_InitStructure.ADC_NbrOfChannel = 1;
  ADC_Init(ADC1, &ADC_InitStructure);

  /* ADC1 regular channel8 configuration -------------------------------------*/
  ADC_RegularChannelConfig(ADC1, ADC_Channel_8, 1, ADC_SampleTime_55Cycles5);

  /* Enable ADC1 -------------------------------------------------------------*/
  ADC_Cmd(ADC1, ENABLE);
}

uint16_t Get_ADC_Value(void)
{
  ADC_SoftwareStartConvCmd(ADC1, ENABLE); // Start the conversion
  while (!ADC_GetFlagStatus(ADC1, ADC_FLAG_EOC)); // Wait for conversion to complete
  return ADC_GetConversionValue(ADC1); // Return the converted value
}

int main(void)
{
  uint16_t adc_value;
  float battery_voltage;

  ADC_Configuration();

  while (1)
  {
    adc_value = Get_ADC_Value();
    battery_voltage = (float)adc_value * 3.3 / 4096 * 2; // 2 is used to account for voltage divider
    // Do something with the battery voltage value
  }
}

这段代码使用了ADC1的通道8来读取模拟输入的电压值，根据电路连接的具体情况，可能需要使用电压分压电路将锂电池的电压降下来才能读取。在这里，假设使用了电压分压电路并且分压比为2。最终得到的电压值就是电池电压。