//-----------------------------------------------------------------//
// Setup ADC
// ADC_CLK = 4 MHz
// ADC single conversion time is ADC_StartDelay +
// (29 to 36 ADC clock cycles depending on ADC_DelayGo)
// ADC clock = 4MHz / 128 = 31.250kHz (T = 32uS)
//-----------------------------------------------------------------//
void HW_ADCInit(void)
{
ADC_InitTypeDef sADC;
ADCx_InitTypeDef sADCx;
// ADC Configuration
// Reset all ADC settings
ADC_DeInit();
ADC_StructInit(&sADC);
sADC.ADC_SynchronousMode = ADC_SyncMode_Independent;
sADC.ADC_StartDelay = 10;
sADC.ADC_TempSensor = ADC_TEMP_SENSOR_Enable;
sADC.ADC_TempSensorAmplifier = ADC_TEMP_SENSOR_AMPLIFIER_Enable;
sADC.ADC_TempSensorConversion = ADC_TEMP_SENSOR_CONVERSION_Enable;
sADC.ADC_IntVRefConversion = ADC_VREF_CONVERSION_Enable;
sADC.ADC_IntVRefTrimming = 1;
ADC_Init (&sADC);
// ADC1 Configuration
ADCx_StructInit (&sADCx);
sADCx.ADC_ClockSource = ADC_CLOCK_SOURCE_ADC;
sADCx.ADC_SamplingMode = ADC_SAMPLING_MODE_SINGLE_CONV;
sADCx.ADC_ChannelSwitching = ADC_CH_SWITCHING_Disable;
sADCx.ADC_ChannelNumber = ADC_CH_TEMP_SENSOR;
sADCx.ADC_Channels = 0;
sADCx.ADC_LevelControl = ADC_LEVEL_CONTROL_Disable;
sADCx.ADC_LowLevel = 0;
sADCx.ADC_HighLevel = 0;
sADCx.ADC_VRefSource = ADC_VREF_SOURCE_EXTERNAL;
sADCx.ADC_IntVRefSource = ADC_INT_VREF_SOURCE_EXACT;
sADCx.ADC_Prescaler = ADC_CLK_div_128;
sADCx.ADC_DelayGo = 0; // CHECKME
ADC1_Init (&sADCx);
ADC2_Init (&sADCx);
// Disable ADC interupts
ADC1_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), DISABLE);
ADC2_ITConfig((ADCx_IT_END_OF_CONVERSION | ADCx_IT_OUT_OF_RANGE), DISABLE);
// ADC1 enable
ADC1_Cmd (ENABLE);
ADC2_Cmd (ENABLE);
//-------------------//
/* ADC1_SetChannel(ADC_CH_TEMP_SENSOR);
ADC1_Start();
while( ADC_GetFlagStatus(ADC1_FLAG_END_OF_CONVERSION)==RESET );
temp_adc = ADC1_GetResult();
ADC1_Start();
while( ADC_GetFlagStatus(ADC1_FLAG_END_OF_CONVERSION)==RESET );
temp_adc = ADC1_GetResult();
temp_adc = temp_adc;
*/
}
/**************************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);
}