Forums

i have modified my  GET_ADC_DATA function now iam getting value  for single channel , channel zero ,how to read adc value for second channel, Please help here is my code

1)I have enabled TAG bit ,i never get TAG BIT=1 , I always get TAGBIT=0;

2)I configure cfr with bit pattern but when i read  CFR register it not gives same pattern as write. ,I always get D0=0  system reset .

3)my adc data for CH0 is not proportional to the input applied .

I AM ATTACHING SCOPE SCREENS IN DIFFERENT POST BECAUSE IAM ANBLE TO ATTACH IN SAME POST. 

 CFR DATA WRITE AND READ 

my code

void ads8328_ini(void) //CONFIGURE  CFR
 {      
        seventeenth_clk=0 ;
        GPIO_WriteBit(SPI_CLK_PORT, SPI_CLK_PIN,(BitAction)0);   
        GPIO_WriteBit(ADC_STRT_PORT,ADC_STRT_PIN,(BitAction) 0);
 
        GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 0);
        ADC_CONFIG =0xE8FF   ;

        WRITE_ADC8328(ADC_CONFIG) ;                 //WRITE CFR
        SPI1_Buffer_Rx[4]=GET_DATA_INT ;
        GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 1)  ;
  /////////////////////////////////////////////////////////////////////////////////////      
        delay_us(10);
        GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 0)  ;
        WRITE_ADC8328(READ_CFR) ;                     //READ  CFR
        SPI1_Buffer_Rx[5]=GET_DATA_INT ;

        GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 1)  ;
        delay_us(10);
    //    select_ch0();

 }

//////////////////////////////////////////////////////////////////////////////
void adc_read_ch_auto(void)
 {
    seventeenth_clk=1 ;
    GPIO_WriteBit(ADC_STRT_PORT,ADC_STRT_PIN,(BitAction) 1)  ; //start 1

    GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 1)  ; //nss1

    temp_bit=1 ; 
    //while(temp_bit==1) //check EOC pin status
    temp_bit = GPIO_ReadInputDataBit(ADC_EOC_PORT, ADC_EOC_PIN) ;

    delay_us(1);//20ns
    
    GPIO_WriteBit(SPI_NSS_PORT,SPI_NSS_PIN,(BitAction) 0)  ; //nss0
     

    WRITE_ADC8328(READ_DATA) ; //READ CH0 DATA
	if(TAG_BIT == 0)        //TAG BIT=0 ;
	 {
    	SPI1_Buffer_Rx[0] = GET_DATA_INT ;
     }

	else if(TAG_BIT == 1)  //TAG BIT=1 ; //READ CH1 DATA
	 {
       SPI1_Buffer_Rx[1] = GET_DATA_INT ;
     }