STM32L051    AD采样时执行到 Pollforconversion()中，在这个函数中while(IS_BIT_CLR(hadc->instance->ISR, ADC_FLAG_EOC))  hadc->instance->ISR的值始终为0，求大神帮解，跪谢了

有没有更多的上下文？
volitale?

不懂帮顶。。。

moyanming2013 发表于 2015-12-7 17:09
有没有更多的上下文？
volitale?

AD模块就是怎么也不好用，程序可以编译通过，但是就是采不到模拟端口的值，下面是我的main函数（单步调试时，ADC_ISR始终为0，ADC_DR始终为0）
/**main.c**/



#include "LMP91000.h"

#include<stdio.h>

#include"stm32l0xx_hal_rcc_ex.h"

void SystemClock_Config(void);
static void MX_GPIO_Init(void);
static void MX_ADC_Init(void);


/* Private function prototypes -----------------------------------------------*/
void Delay(__IO uint32_t nCount);  //延时函数
static void Error_Handler(void);
/* ADC handle declaration */
ADC_HandleTypeDef        hadc;

/* ADC channel configuration structure declaration */
ADC_ChannelConfTypeDef   sConfig;

/* Converted value declaration */
uint32_t                 uwConvertedValue;
/* Input voltage declaration */
uint32_t                 uwInputVoltage;


int main(void)
{


/* Reset of all peripherals, Initializes the Flash interface and the Systick. */
  HAL_Init();
  SystemClock_Config();

  MX_GPIO_Init();
  I2C_GPIO1_Config();
  I2C_GPIO2_Config();
  LMP91000_PortInit(1,0);
  Delay(0X00FFFF);

    /**Configure the global features of the ADC (Clock, Resolution, Data Alignment and number of conversion) */

  hadc.Instance = ADC1;
  hadc.Init.OversamplingMode = DISABLE;
        
//        hadc.Init.OversamplingMode         = ENABLE;
//  hadc.Init.Oversample.Ratio         = ADC_OVERSAMPLING_RATIO_128;
//  hadc.Init.Oversample.RightBitShift = ADC_RIGHTBITSHIFT_3;
//  hadc.Init.Oversample.TriggeredMode = ADC_TRIGGEREDMODE_SINGLE_TRIGGER;
        
        
  hadc.Init.ClockPrescaler = ADC_CLOCKPRESCALER_PCLK_DIV1;
  hadc.Init.Resolution = ADC_RESOLUTION12b;
  hadc.Init.SamplingTime = ADC_SAMPLETIME_1CYCLE_5;
  hadc.Init.ScanDirection = ADC_SCAN_DIRECTION_UPWARD;
  hadc.Init.DataAlign = ADC_DATAALIGN_RIGHT;
  hadc.Init.ContinuousConvMode = DISABLE;
  hadc.Init.DiscontinuousConvMode = DISABLE;
  hadc.Init.ExternalTrigConvEdge = ADC_EXTERNALTRIG_EDGE_NONE;
  hadc.Init.DMAContinuousRequests = DISABLE;
  hadc.Init.EOCSelection = EOC_SINGLE_CONV;
  hadc.Init.Overrun = OVR_DATA_PRESERVED;
  hadc.Init.LowPowerAutoWait = ENABLE;
  hadc.Init.LowPowerFrequencyMode = ENABLE;
  hadc.Init.LowPowerAutoOff = DISABLE;
  HAL_ADC_Init(&hadc);
        
  /* Initialize ADC peripheral according to the passed parameters */
  if (HAL_ADC_Init(&hadc) != HAL_OK)
  {
    Error_Handler();
  }
   /* ### -2 - Channel configuration ######################################## */
  /* Select Channel 0 to be converted */
        sConfig.Channel = ADC_CHANNEL_0;
  HAL_ADC_ConfigChannel(&hadc, &sConfig);
  if (HAL_ADC_ConfigChannel(&hadc, &sConfig) != HAL_OK)
  {
    Error_Handler();
  }


  /* ### - 3 - Start calibration ############################################ */
  if (HAL_ADCEx_Calibration_Start(&hadc, ADC_SINGLE_ENDED) != HAL_OK)
  {
    Error_Handler();
  }

        
        
        

  /* ### - 4 - Start conversion ############################################# */
  if (HAL_ADC_Start(&hadc) != HAL_OK)
  {
    Error_Handler();
  }
        
         HAL_ADC_PollForConversion(&hadc, 10);  //等待转换结束

         if(HAL_ADC_GetState(&hadc)==HAL_ADC_STATE_EOC)
         {
               Delay(0x00FFFF);
         //uwConvertedValue = HAL_ADC_GetValue(&hadc);
           uwConvertedValue = hadc.Instance->DR;
         /* Convert the result from 16 bit value to the voltage dimsension */
        /* Vref = 3.3 V */
        uwInputVoltage = (uwConvertedValue * 3300) / 0xFFF0;
    }

  while (1)
  {


  }
  /* USER CODE END 3 */

}

/** System Clock Configuration
*/
void SystemClock_Config(void)
{

  RCC_OscInitTypeDef RCC_OscInitStruct;
  RCC_ClkInitTypeDef RCC_ClkInitStruct;

  __PWR_CLK_ENABLE();

  __HAL_PWR_VOLTAGESCALING_CONFIG(PWR_REGULATOR_VOLTAGE_SCALE1);

  RCC_OscInitStruct.OscillatorType = RCC_OSCILLATORTYPE_MSI;
  RCC_OscInitStruct.MSIState = RCC_MSI_ON;
  RCC_OscInitStruct.MSICalibrationValue = 0;
  RCC_OscInitStruct.MSIClockRange = RCC_MSIRANGE_5;
  RCC_OscInitStruct.PLL.PLLState = RCC_PLL_NONE;
  HAL_RCC_OscConfig(&RCC_OscInitStruct);

  RCC_ClkInitStruct.ClockType = RCC_CLOCKTYPE_SYSCLK;
  RCC_ClkInitStruct.SYSCLKSource = RCC_SYSCLKSOURCE_MSI;
  RCC_ClkInitStruct.AHBCLKDivider = RCC_SYSCLK_DIV1;
  RCC_ClkInitStruct.APB1CLKDivider = RCC_HCLK_DIV1;
  RCC_ClkInitStruct.APB2CLKDivider = RCC_HCLK_DIV1;
  HAL_RCC_ClockConfig(&RCC_ClkInitStruct, FLASH_LATENCY_0);

  HAL_SYSTICK_Config(HAL_RCC_GetHCLKFreq()/1000);

  HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK);

  /* SysTick_IRQn interrupt configuration */
  HAL_NVIC_SetPriority(SysTick_IRQn, 0, 0);
}

/** Configure pins as
        * Analog
        * Input
        * Output
        * EVENT_OUT
        * EXTI
*/
void MX_GPIO_Init(void)
{

  GPIO_InitTypeDef GPIO_InitStruct;

  /* GPIO Ports Clock Enable */
  __GPIOA_CLK_ENABLE();


  /*Configure GPIO pin : PA9(KEY1) PA3(MENB_O2)*/
  GPIO_InitStruct.Pin = GPIO_PIN_9|GPIO_PIN_3;
  GPIO_InitStruct.Mode = GPIO_MODE_OUTPUT_PP;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_9, GPIO_PIN_SET);
  HAL_GPIO_WritePin(GPIOA, GPIO_PIN_3, GPIO_PIN_RESET);
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
        
        /*Configure GPIO pin : PA0(AN_O2_1) PA6(L1_VOLT)  AD模拟输入*/
  GPIO_InitStruct.Pin = GPIO_PIN_0|GPIO_PIN_6;
  GPIO_InitStruct.Mode = GPIO_MODE_ANALOG;
  GPIO_InitStruct.Pull = GPIO_NOPULL;
  GPIO_InitStruct.Speed = GPIO_SPEED_FAST;
  HAL_GPIO_Init(GPIOA, &GPIO_InitStruct);
   
}

/* USER CODE BEGIN 4 */
/********************************************************************************************
延时函数void Delay(__IO uint32_t nCount)
*******************************************************************************************/
void Delay(__IO uint32_t nCount)
{
  while(nCount--)
  {
  }
}


/* USER CODE END 4 */
static void Error_Handler(void)
{
  while(1)
  {
  }
}





#ifdef USE_FULL_ASSERT

/**
   * @brief Reports the name of the source file and the source line number
   * where the assert_param error has occurred.
   * @param file: pointer to the source file name
   * @param line: assert_param error line source number
   * @retval None
   */
void assert_failed(uint8_t* file, uint32_t line)
{
  /* USER CODE BEGIN 6 */
  /* User can add his own implementation to report the file name and line number,
    ex: printf("Wrong parameters value: file %s on line %d\r\n", file, line) */
  /* USER CODE END 6 */

}

#endif

/**
  * @}
  */

/**
  * @}
*/

/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/