/**
* @brief Initializes the ADC2 peripheral according to the specified parameters
* @param ADC2_ConversionMode: specifies the conversion mode
* can be one of the values of @ref ADC2_ConvMode_TypeDef.
* @param ADC2_Channel: specifies the channel to convert
* can be one of the values of @ref ADC2_Channel_TypeDef.
* @param ADC2_PrescalerSelection: specifies the ADC2 prescaler
* can be one of the values of @ref ADC2_PresSel_TypeDef.
* @param ADC2_ExtTrigger: specifies the external trigger
* can be one of the values of @ref ADC2_ExtTrig_TypeDef.
* @param ADC2_ExtTriggerState: specifies the external trigger new state
* can be one of the values of @ref FunctionalState.
* @param ADC2_Align: specifies the converted data alignment
* can be one of the values of @ref ADC2_Align_TypeDef.
* @param ADC2_SchmittTriggerChannel: specifies the schmitt trigger channel
* can be one of the values of @ref ADC2_SchmittTrigg_TypeDef.
* @param ADC2_SchmittTriggerState: specifies the schmitt trigger state
* can be one of the values of @ref FunctionalState.
* @retval None
*/
void ADC2_Init(ADC2_ConvMode_TypeDef ADC2_ConversionMode, ADC2_Channel_TypeDef ADC2_Channel, ADC2_PresSel_TypeDef ADC2_PrescalerSelection, ADC2_ExtTrig_TypeDef ADC2_ExtTrigger, FunctionalState ADC2_ExtTriggerState, ADC2_Align_TypeDef ADC2_Align, ADC2_SchmittTrigg_TypeDef ADC2_SchmittTriggerChannel, FunctionalState ADC2_SchmittTriggerState)
{
/* Check the parameters */
assert_param(IS_ADC2_CONVERSIONMODE_OK(ADC2_ConversionMode));
assert_param(IS_ADC2_CHANNEL_OK(ADC2_Channel));
assert_param(IS_ADC2_PRESSEL_OK(ADC2_PrescalerSelection));
assert_param(IS_ADC2_EXTTRIG_OK(ADC2_ExtTrigger));
assert_param(IS_FUNCTIONALSTATE_OK(((ADC2_ExtTriggerState))));
assert_param(IS_ADC2_ALIGN_OK(ADC2_Align));
assert_param(IS_ADC2_SCHMITTTRIG_OK(ADC2_SchmittTriggerChannel));
assert_param(IS_FUNCTIONALSTATE_OK(ADC2_SchmittTriggerState));
/*-----------------CR1 & CSR configuration --------------------*/
/* Configure the conversion mode and the channel to convert
respectively according to ADC2_ConversionMode & ADC2_Channel values & ADC2_Align values */
ADC2_ConversionConfig(ADC2_ConversionMode, ADC2_Channel, ADC2_Align);
/* Select the prescaler division factor according to ADC2_PrescalerSelection values */
ADC2_PrescalerConfig(ADC2_PrescalerSelection);
/*-----------------CR2 configuration --------------------*/
/* Configure the external trigger state and event respectively
according to ADC2_ExtTrigStatus, ADC2_ExtTrigger */
ADC2_ExternalTriggerConfig(ADC2_ExtTrigger, ADC2_ExtTriggerState);
/*------------------TDR configuration ---------------------------*/
/* Configure the schmitt trigger channel and state respectively
according to ADC2_SchmittTriggerChannel & ADC2_SchmittTriggerNewState values */
ADC2_SchmittTriggerConfig(ADC2_SchmittTriggerChannel, ADC2_SchmittTriggerState);
/* Enable the ADC2 peripheral */
ADC2->CR1 |= ADC2_CR1_ADON;
}
/**************************实现函数********************************************
*函数原型: unsigned int Get_ADCCH_Value(ADC2_Channel_TypeDef ADC_Channel)
*功 能: 单次采样某个ADC通道
*******************************************************************************/
unsigned int Get_ADCCH_Value(ADC2_Channel_TypeDef ADC_Channel)
{
unsigned int SUM = 0;//临时和
unsigned char j;
//配置ADC转换通道，单次采样模式，ADC结果右对齐
ADC2_Cmd(ENABLE);
ADC2_ConversionConfig(ADC2_CONVERSIONMODE_SINGLE, ADC_Channel, ADC2_ALIGN_RIGHT);
for (j = 0; j < 16 ; j++)
{
ADC2_StartConversion(); // 开始转换
while (ADC2_GetFlagStatus() == RESET); // 等待转换完成
SUM += ADC2_GetConversionValue(); // 求和
ADC2_ClearFlag();
}
SUM = SUM>>4;
ADC2_Cmd(DISABLE);
return(SUM);
}
