STM32 ADC转换中断读取

ADC中断读取方式适用于低频率的ADC采集，而高频率的AD采集必须使用DMA,

ADC中断读取的初始化函数只是比上一篇的直接读取方式添加了点中断配置文件，代码如下：

static void ADC_GPIO_Config(void)

{

  GPIO_InitTypeDef  GPIO_InitStructure;

RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA, ENABLE); //ʹÄÜPB,PE¶Ë¿ÚʱÖÓ

GPIO_InitStructure.GPIO_Pin=GPIO_Pin_1;

GPIO_InitStructure.GPIO_Mode=GPIO_Mode_AIN;

GPIO_Init(GPIOA, &GPIO_InitStructure);

}

static void ADC_Mode_Config(void)

{

  ADC_InitTypeDef ADC_InitStructure;

//ADC_GPIO_Config();

RCC_APB2PeriphClockCmd(RCC_APB2Periph_ADC1,ENABLE);

ADC_DeInit(ADC1);

ADC_InitStructure.ADC_Mode = ADC_Mode_Independent;

ADC_InitStructure.ADC_ContinuousConvMode = ENABLE;

ADC_InitStructure.ADC_ScanConvMode=DISABLE;

ADC_InitStructure.ADC_ExternalTrigConv = ADC_ExternalTrigConv_None;

ADC_InitStructure.ADC_DataAlign = ADC_DataAlign_Right;

ADC_InitStructure.ADC_NbrOfChannel=ADC_Channel_1;

ADC_Init(ADC1,&ADC_InitStructure);

RCC_ADCCLKConfig(RCC_PCLK2_Div8); 

ADC_RegularChannelConfig(ADC1, ADC_Channel_1, 1, ADC_SampleTime_239Cycles5);

ADC_ITConfig(ADC1,ADC_IT_EOC,ENABLE);

  ADC_Cmd(ADC1,ENABLE);

ADC_ResetCalibration(ADC1);

while(ADC_GetResetCalibrationStatus(ADC1));

ADC_StartCalibration(ADC1);

while(ADC_GetCalibrationStatus(ADC1));

ADC_SoftwareStartConvCmd(ADC1,ENABLE);

}

static void ADC_NVIC_Config()

{

NVIC_InitTypeDef NVIC_InitStructure;

NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);

       NVIC_InitStructure.NVIC_IRQChannel = ADC1_2_IRQn;

NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1 ;

NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;

NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;

NVIC_Init(&NVIC_InitStructure);

}

void ADC_InitConfig(void)

{

ADC_NVIC_Config();

       ADC_GPIO_Config();

ADC_Mode_Config();

}

上面的红色部分即为需要添加的代码，分析上面的代码其实就是允许ADC的中断，设置中断的优先级

实际效果图就不发了，代码都是经过测试的，对了，还有个中断服务函数没发出来呢

void ADC1_2_IRQHandler(void)

{

      if(ADC_GetITStatus(ADC1,ADC_IT_EOC) == SET)

{

 adcconverdata=ADC_GetConversionValue(ADC1);

}

ADC_ClearITPendingBit(ADC1,ADC_IT_EOC);

}