一、先贴三张官方文档的截图

翻译一下大概的意思：

1）顶层参数配置

a. ADC的时钟不能高于14MHz

b. 可用HAL_ADC_MspInit()使能时钟

c. 时钟源选择、时钟分频配置。

2）基础配置

a. 使用HAL_ADC_Init() 来初始化一些参数（使用了大量的SET_BIT()函数）

b. 使用HAL_ADC_ConfigChannel() 来初始化ADC通道参数

3）如何执行来获取ADC值

a. HAL_ADC_Start() 开始转换

b. HAL_ADC_PollForConversion() 判断转换是否完成

c. HAL_ADC_GetValue() 获取结果

二、整理一下流程

1.配置时钟、ADC参数

2. 时钟使能

3. 端口初始化

4. ADC通道参数、执行转换

三、CubeMX的配置

新版的IDE在配置时钟时，使用时钟树，而不再在ADC配置下。

72MHz 6分频以后为12MHz，低于14MHz，使用时钟树更加直观！

四、代码生成及分布

1、ADC时钟配置在 SystemClock_Config() 中

2、ADC配置、端口配置、时钟使能见adc.h

五、需要用户自己添加的代码

1、"adc.c"

uint16_t Get_Adc_Value(uint32_t ch)
{
  ADC_ChannelConfTypeDef ADC1_ChanConf;
  ADC1_ChanConf.Channel=ch; //通道
  ADC1_ChanConf.Rank=1; //第 1 个序列，序列 1
  ADC1_ChanConf.SamplingTime=ADC_SAMPLETIME_7CYCLES_5; //采样时间
  HAL_ADC_ConfigChannel(&hadc1,&ADC1_ChanConf); //通道配置

  HAL_ADC_Start(&hadc1); //开启 AD
  HAL_ADC_PollForConversion(&hadc1,10);  //轮询转换
  if(HAL_IS_BIT_SET(HAL_ADC_GetState(&hadc1), HAL_ADC_STATE_REG_EOC))
  {
    return HAL_ADC_GetValue(&hadc1);
  }
  return 0;
}

2. "adc.h"

uint16_t Get_Adc_Value(uint32_t ch);

附：官方例程

/* ADC handler declaration */
ADC_HandleTypeDef AdcHandle;

/* Variable used to get converted value */
__IO uint16_t uhADCxConvertedValue = 0;

/* Private function prototypes -----------------------------------------------*/
static void SystemClock_Config(void);
static void Error_Handler(void);

int main(void)
{
  ADC_ChannelConfTypeDef sConfig;
  
  HAL_Init();
  
  /* Configure the system clock to 144 MHz */
  SystemClock_Config();
  
  /*##-1- Configure the ADC peripheral #######################################*/
  AdcHandle.Instance          = ADCx;
  
  AdcHandle.Init.ClockPrescaler        = ADC_CLOCKPRESCALER_PCLK_DIV2;
  AdcHandle.Init.Resolution            = ADC_RESOLUTION_12B;
  AdcHandle.Init.ScanConvMode          = DISABLE;
  AdcHandle.Init.ContinuousConvMode    = DISABLE;
  AdcHandle.Init.DiscontinuousConvMode = DISABLE;
  AdcHandle.Init.NbrOfDiscConversion   = 0;
  AdcHandle.Init.ExternalTrigConvEdge  = ADC_EXTERNALTRIGCONVEDGE_NONE;
  AdcHandle.Init.ExternalTrigConv      = ADC_EXTERNALTRIGCONV_T1_CC1;
  AdcHandle.Init.DataAlign             = ADC_DATAALIGN_RIGHT;
  AdcHandle.Init.NbrOfConversion       = 1;
  AdcHandle.Init.DMAContinuousRequests = DISABLE;
  AdcHandle.Init.EOCSelection          = DISABLE;
      
  if(HAL_ADC_Init(&AdcHandle) != HAL_OK)
  {
    /* Initialization Error */
    Error_Handler();
  }
  
  /*##-2- Configure ADC regular channel ######################################*/  
  sConfig.Channel      = ADCx_CHANNEL;
  sConfig.Rank         = 1;
  sConfig.SamplingTime = ADC_SAMPLETIME_3CYCLES;
  sConfig.Offset       = 0;
  
  if(HAL_ADC_ConfigChannel(&AdcHandle, &sConfig) != HAL_OK)
  {
    /* Channel Configuration Error */
    Error_Handler();
  }
  

  /*##-3- Start the conversion process #######################################*/  
  if(HAL_ADC_Start(&AdcHandle) != HAL_OK)
  {
    /* Start Conversation Error */
    Error_Handler();
  }
  
  /*##-4- Wait for the end of conversion #####################################*/  
   /*  Before starting a new conversion, you need to check the current state of 
        the peripheral; if it抯 busy you need to wait for the end of current
        conversion before starting a new one.
        For simplicity reasons, this example is just waiting till the end of the 
        conversion, but application may perform other tasks while conversion 
        operation is ongoing. */
  HAL_ADC_PollForConversion(&AdcHandle, 10);
  
  /* Check if the continuous conversion of regular channel is finished */
  if((HAL_ADC_GetState(&AdcHandle) & HAL_ADC_STATE_EOC_REG) == HAL_ADC_STATE_EOC_REG)
  {
    /*##-5- Get the converted value of regular channel #######################*/
    uhADCxConvertedValue = HAL_ADC_GetValue(&AdcHandle);
  }
    
  /* Infinite loop */
  while (1)
  {
  }
}

来源：CSDN

作者：zateper

链接：https://blog.csdn.net/u010779035/article/details/104063868

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adc