I am trying to read register 0 and after reset I get all 0s clocked out.

Here is the main program

//set pin names
int ledPin =  13;      // LED connected to digital pin 13 d13
int RESET = 11;        //reset pin active reset low d10.
int START = 10;        //start pin activate conversion when high d11.
int DRDY = 12;         //active low when data is ready to be read d12.
int cs_main = 9;       //selects main chip to configure registers d9
int cs_secondary =8;   //selects non-main chip to configure registers d9
int sclk=14;          //system clock for all the other pins d14
int doutMISO_0=0;          //doutMISO of the main chip 2-7 secondary chips master in slave out
int dinMOSI=15;           //data in to all other pins Master out slave in

//global vareables
int buttonState=LOW;
int drdy_State=HIGH;
int dout_input=HIGH;

// The setup() method runs once, when the sketch starts

void setup()   {               

  ads1298_Set_Pins();
  ads1298_Power_Up();

  send_Reset_Command();
  //delay after reset
  delay(1000); 
  delay(1000); 
  delay(1000); 
  delay(1000); 
  delay(1000);

  //Stop Read Data Continuously mode
  sdatac();

  //read = RREG When in RDATAC mode, the RREG command is ignored.



  //read register 0
  read_reg_0();

  read_byte_1();


  digitalWrite(sclk, HIGH);
  //b7
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b6
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b5
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b4
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b3
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b2
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b1
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);


  digitalWrite(sclk, HIGH);
  //b0
  digitalWrite(sclk, LOW);
  dout_input = digitalRead(doutMISO_0);
  SerialUSB.print(dout_input);



  //  digitalWrite(START, HIGH);

  //check for drdy change before filling registers...
  while(drdy_State==HIGH){
    drdy_State = digitalRead(DRDY);
    if(drdy_State==LOW){ 
      digitalWrite(ledPin, HIGH);
    }
  }

}
// the loop() method runs over and over again,
// as long as the Arduino has power

void loop()                    
{
  buttonState = digitalRead(DRDY);

  if(buttonState==LOW){ 
    //    lowsig++;      
  }           // wait for a second
  if(buttonState==HIGH){ 
    //    highsig++;      
  }

  //SerialUSB.println("Hello World! low");
  //  SerialUSB.println(lowsig);
  //  SerialUSB.println(highsig);

}


here is the functions:

void ads1298_Set_Pins(void){
  SerialUSB.println("ADS1298 power up!");
  //setup pins for inputs and outputs
  pinMode(ledPin, OUTPUT);
  pinMode(RESET, OUTPUT); 
  pinMode(START, OUTPUT); 
  pinMode(DRDY, INPUT);
  pinMode(cs_main, OUTPUT);
  pinMode(cs_secondary, OUTPUT);
  pinMode(sclk, OUTPUT);
  pinMode(doutMISO_0, INPUT);
  pinMode(dinMOSI, OUTPUT);
}

void ads1298_Power_Up(void){
  //tie all low
  digitalWrite(START, LOW);
  digitalWrite(ledPin, LOW);
  digitalWrite(cs_main, LOW);
  digitalWrite(cs_secondary, LOW);
  digitalWrite(sclk, LOW);
  digitalWrite(dinMOSI, LOW);
  //step 1 wait 500ms instead of recomended 150ms
  //for power supplies to stableise
  delay(500);
  //set CLKSEL=1 wait 20us //allready set to 1 unless tie to pin.
  delay(500); //wait 500ms instead of 20us to let clk stableise
  //wait 2^16 tclk = 65536 tclk 2.x Mhz
  delay(1000); //wait 1 s instead of 65536 tclk
  //reset pulse low wait 18tclks longer low wait 5 sec for power on reset
  //reset allready tied HIGH
  digitalWrite(RESET, LOW);
  delay(100);
  digitalWrite(RESET, HIGH);
  delay(1000);
  delay(1000);
  delay(1000);
  delay(1000);
  delay(1000);
}

void send_Reset_Command(void){
  //0000 0110
  //msb first
  //set configuration registers...

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//msb 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //doutMISO 6 =0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //doutMISO 5 =0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //doutMISO 4 =0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //doutMISO 3 =0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, HIGH); //dinMOSI b2=1
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //doutMISO b1=1
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//dinMOSI b0=0
  digitalWrite(sclk, LOW);
}

void sdatac(void){
  //SDATAC
  //0001 0001
  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//msb7 = 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b6 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b5 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, HIGH);//b4 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//b3 = 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b2 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b1 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, HIGH);//b0=1
  digitalWrite(sclk, LOW);
}

void rreg (void){
  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//msb7 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b6 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, HIGH);//b5 1
  digitalWrite(sclk, LOW);
}

void wr_defalt_pre_num_of_bytes(void){
  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//msb 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b6 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b5 0
  digitalWrite(sclk, LOW);
}

void rwrite(void){ 
  //rwrite = WREG
  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//msb 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, HIGH);//b7 1
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//b6 0
  digitalWrite(sclk, LOW);
}

void read_reg_0(void){
  rreg();
 
  digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);//b4 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b3 0
  digitalWrite(sclk, LOW);


  digitalWrite(sclk, HIGH);
  //b2 0
  digitalWrite(sclk, LOW);


  digitalWrite(sclk, HIGH);
  //b1 1
  digitalWrite(sclk, LOW);


  digitalWrite(sclk, HIGH);
  //b0 0
  digitalWrite(sclk, LOW);
}

void read_byte_1(void){
//wr_defalt_pre_num_of_bytes
wr_defalt_pre_num_of_bytes();
//number of bytes 0


    digitalWrite(sclk, HIGH);
  digitalWrite(dinMOSI, LOW);  //b4 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b3 0
  digitalWrite(sclk, LOW);


  digitalWrite(sclk, HIGH);
  //b2 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b1 0
  digitalWrite(sclk, LOW);

  digitalWrite(sclk, HIGH);
  //b0 0
  digitalWrite(sclk, LOW);
}