STM32WB55 ADC获取电压值

参考手册：给出计算方法和内部参考电压采样通道 ADC1_IN0

数据手册给出校准值的地址，这里数据手册 3.6v 写的不对
以参考手册 3.0v为准

实测结果

McuAdc.c

#include <stdio.h>
#include <stdint.h>


#include "McuAdc.h"

ADC_HandleTypeDef hadc1;
uint32_t adcInitErr = 0;
/* Variables for ADC conversion data computation to physical values */
uint16_t   uhADCxConvertedData_Voltage_mVolt = 0;  /* Value of voltage calculated from ADC conversion data (unit: mV) */

void ADC_Init(void)
{
    
    
  ADC_ChannelConfTypeDef sConfig = {
    
    0};

  /** Common config 
  */
  hadc1.Instance = ADC1;
  hadc1.Init.ClockPrescaler = ADC_CLOCK_ASYNC_DIV1;
  hadc1.Init.Resolution = ADC_RESOLUTION_12B;
  hadc1.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc1.Init.ScanConvMode = ADC_SCAN_DISABLE;
  hadc1.Init.EOCSelection = ADC_EOC_SINGLE_CONV;
  hadc1.Init.LowPowerAutoWait = DISABLE;
  hadc1.Init.ContinuousConvMode = DISABLE;
  hadc1.Init.NbrOfConversion = 1;
  hadc1.Init.DiscontinuousConvMode = DISABLE;
  hadc1.Init.NbrOfDiscConversion = 1;
  hadc1.Init.ExternalTrigConv = ADC_SOFTWARE_START;
  hadc1.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIGCONVEDGE_NONE;
  hadc1.Init.DMAContinuousRequests = DISABLE;
  hadc1.Init.Overrun = ADC_OVR_DATA_PRESERVED;
  hadc1.Init.OversamplingMode = DISABLE;
  if (HAL_ADC_Init(&hadc1) != HAL_OK)
  {
    
    
		adcInitErr |= 1;
  }
  /** Configure Regular Channel 
  */
  sConfig.Channel = ADC_CHANNEL_VREFINT;
  sConfig.Rank = ADC_REGULAR_RANK_1;
  sConfig.SamplingTime = ADC_SAMPLETIME_2CYCLES_5;
  sConfig.SingleDiff = ADC_SINGLE_ENDED;
  sConfig.OffsetNumber = ADC_OFFSET_NONE;
  sConfig.Offset = 0;
  if (HAL_ADC_ConfigChannel(&hadc1, &sConfig) != HAL_OK)
  {
    
    
		adcInitErr |= 1;
  }
  /* Run the ADC calibration */
//  if (HAL_ADCEx_Calibration_Start(&hadc1, ADC_SINGLE_ENDED) != HAL_OK)
//  {
    
    
//    /* Calibration Error */
//    Error_Handler();
//  }
}
void HAL_ADC_MspInit(ADC_HandleTypeDef* adcHandle)
{
    
    

  if(adcHandle->Instance==ADC1)
  {
    
    
  /* USER CODE BEGIN ADC1_MspInit 0 */

  /* USER CODE END ADC1_MspInit 0 */
    /* ADC1 clock enable */
    __HAL_RCC_ADC_CLK_ENABLE();

    /* ADC1 interrupt Init */
    HAL_NVIC_SetPriority(ADC1_IRQn, 5, 0);
    HAL_NVIC_EnableIRQ(ADC1_IRQn);
  /* USER CODE BEGIN ADC1_MspInit 1 */

  /* USER CODE END ADC1_MspInit 1 */
  }
}

void HAL_ADC_MspDeInit(ADC_HandleTypeDef* adcHandle)
{
    
    

  if(adcHandle->Instance==ADC1)
  {
    
    
  /* USER CODE BEGIN ADC1_MspDeInit 0 */

  /* USER CODE END ADC1_MspDeInit 0 */
    /* Peripheral clock disable */
    __HAL_RCC_ADC_CLK_DISABLE();

    /* ADC1 interrupt Deinit */
    HAL_NVIC_DisableIRQ(ADC1_IRQn);
  /* USER CODE BEGIN ADC1_MspDeInit 1 */

  /* USER CODE END ADC1_MspDeInit 1 */
  }
} 

/**
  * @brief : 采集电池电压
  */
void GetBatAdc(void)
{
    
    
  /* 读取芯片内部参考电压校准值 */
  __IO uint16_t VREFINT_CAL = *(__IO uint16_t *)(0x1FFF75AA);
	
  /* Variables for ADC conversion data */
  __IO uint16_t uhADCxConvertedData = 0; /* ADC group regular conversion data */
  
	/* Start ADC group regular conversion */
  if (HAL_ADC_Start(&hadc1) != HAL_OK)
  {
    
    
		adcInitErr |= 4;
    /* ADC conversion start error */
//    Error_Handler();
  }

    /* Wait till conversion is done */
    if (HAL_ADC_PollForConversion(&hadc1, 20) != HAL_OK)
    {
    
    
			adcInitErr |= 8;
      /* End Of Conversion flag not set on time */
//      Error_Handler();
    }
    else
    {
    
    
      /* Retrieve ADC conversion data */
      uhADCxConvertedData = HAL_ADC_GetValue(&hadc1);
      
      /* Computation of ADC conversions raw data to physical values           */
      /* using helper macro.                                                  */
      uhADCxConvertedData_Voltage_mVolt = 3000 * VREFINT_CAL / uhADCxConvertedData;
    }
}

void ShowAdc(void)
{
    
    
	GetBatAdc();
	printf("[err:0x%x]--> Adc:[%d]\n",adcInitErr,uhADCxConvertedData_Voltage_mVolt);
}

McuAdc.h

#ifndef __MCU_ADC_H_
#define __MCU_ADC_H_

#include "stm32wbxx_hal.h"

extern ADC_HandleTypeDef hadc1;

extern void ADC_Init(void);
extern void GetBatAdc(void);
extern void ShowAdc(void);
#endif /* __MCU_ADC_H_ */