urgent (read 3 ADC channel)

[seesy123]

Posted on August 22, 2013 at 13:17

first thanks for spenting your time to me. I need read 3 channel for AIN0,AIN2 and AIN3. But i cant get the analog reading. it always show me constant value even my analog input changed. I'll post related about ADC part..Please help me. thanks in advance

 // Initialisation of ADC    ADC1_ConversionConfig(ADC1_CONVERSIONMODE_CONTINUOUS, ADC1_CHANNEL_3, ADC1_ALIGN_LEFT);  ADC1_PrescalerConfig(ADC1_PRESSEL_FCPU_D18);  ADC1_Cmd(ENABLE);  ADC1_ITConfig(ADC1_IT_EOCIE, ENABLE);  ADC1_StartConversion(); INTERRUPT_HANDLER(ADC1_IRQHandler, 22) {    /* In order to detect unexpected events during development,       it is recommended to set a breakpoint on the following instruction.    */    //  ADC Conversion completed interrupt handler.       u16 ADC_Raw_Value;    static u16 ADC_dIntegrator=0;    static u16 ADC_itIntegrator=0;    static u8 ADC_mCount=0;        ADC1->CSR &= ~ADC1_CSR_EOC;            //  Indicate that ADC conversion is complete.           ADC_Raw_Value = ADC1->DRH;            //  Read Most Significant bits first     ADC_Raw_Value <<= 2;                  //  Switch 2 bit to left(D9-D2)    ADC_Raw_Value |= (ADC1->DRL & 0x03);    //  Add most and least significant bits     ADC_mCount++;    ADC_itIntegrator+= ADC_Raw_Value;    if(ADC_mCount == 20)    {      ADC_dIntegrator=ADC_itIntegrator ;      callbackADC_Integrator(ADC_dIntegrator);      DALIslave_SetAdcDataReadyFlag(TRUE);      ADC_dIntegrator = 0;      ADC_mCount = 0;               } }void callbackADC_Integrator(u16 itADC_Integrator){  ADC_Integrator = itADC_Integrator;}void DALIslave_SetAdcDataReadyFlag(bool state){  AdcDataReadyFlag = state;}bool DALIslave_GetAdcDataReadyFlag(void){  return AdcDataReadyFlag;}void DALIslave_AvgADCValue(){  static u8 AdcChannel = 0;  u16 ADC_final;  u8 ADC_low;  u8 ADC_high;    if (AdcChannel == 0)  {    ADC1->CR1 &= ~ADC1_CR1_ADON;                          //disable ADC conversion channel-0    ADC1->CSR |= ADC1_CHANNEL_2;    ADC1->CR1 |= ADC1_CR1_ADON;                           //start ADC conversion channel-2    AdcChannel++;                                            //set to channel-2(current)       ADC_temperature = ADC_Integrator / 20;                //get temperature average        ADC_final = (ADC_temperature );//* 33) / 10;    ADC_low = (u8)(ADC_final & 0xff);               ADC_high =(u8)((ADC_final >> 8 )& 0xff);    DALIP_SetTemperature(ADC_high, ADC_low);              //set temperature to RAM  }    else if (AdcChannel == 1)  {    ADC1->CR1 &= ~ADC1_CR1_ADON;                          //disable ADC conversion channel-2    ADC1->CSR |= ADC1_CHANNEL_3;                          //set to channel-3(voltage)    ADC1->CR1 |= ADC1_CR1_ADON;                           //start ADC conversion channel-3    AdcChannel++;        ADC_current = ADC_Integrator / 20;                    //get current average       ADC_final = (ADC_current );//* 33) / 10;    ADC_low = (u8)(ADC_final & 0xff);    ADC_high = (u8)((ADC_final >> 8 )& 0xff);    DALIP_SetCurrent(ADC_high, ADC_low);                  //set current to RAM   }    else  {    ADC1->CR1 &= ~ADC1_CR1_ADON;                          //disable ADC conversion channel-3        ADC1->CSR |= ADC1_CHANNEL_0;    ADC1->CR1 |= ADC1_CR1_ADON;                           //set to channel-0(temperature)    AdcChannel = 0;        ADC_voltage = ADC_Integrator / 20;                    //get voltage average    ADC_final = (ADC_voltage );//* 33) / 10;    ADC_low = (u8)(ADC_final & 0xff);    ADC_high =(u8)((ADC_final >> 8 )& 0xff);    DALIP_SetVoltage(ADC_high, ADC_low);                  //set temperature to RAM  }  AdcDataReadyFlag = FALSE;}void main(void){  while(1)     if (DALIslave_GetAdcDataReadyFlag() == TRUE)     {       DALIslave_AvgADCValue();     }  }