ADS7953: Setup and Data read command Sequence for Arduino.

Part Number:ADS7953

This is the code i am using for setting the ADS7953 in Auto mode and then reading all the channels sequentially. I referred the similar threads for ads7953 and then developed this code. 
I think the programming sequence is correct but  i am not getting any response from the device. i dont have a logic analyzer with me. Attaching a schematics for my design.  

What could be possibly wrong with my setup ? 

If i want to test just a single channel can i just write 

int data_high = spi.transfer(0x18);
int data_low = spi.transfer(0x80);

? 


i just need a very basic command sequence to check whether the hardware setup is proper or not. I can take care of the improper data later , i just need to get some response from ads7953. 

#include <SPI.h>

SPIClass * vspi = NULL;
SPIClass * hspi = NULL;
auto ADC_CLK =  1000000;



int reset_cmd = 0x4200;

int auto_mode_1 = 0x8000;

int select_all_channels = 0xFFFF;

int reset_counter = 0x2C00;

const int PIN_NUM_MISO = 12;
const int PIN_NUM_MOSI = 14;
const int PIN_NUM_CLK = 27;
const int PIN_NUM_CS  = 13;

const int ENC_CS  = 26;
const int SD_CS = 5;

//unsigned int adc_data;

float ch[16];


void setup() {
  // put your setup code here, to run once:
  //  init_spi();
  Serial.begin(115200);
  pinMode(ENC_CS, OUTPUT);
  pinMode(SD_CS, OUTPUT);
  digitalWrite(ENC_CS, HIGH);
  digitalWrite(SD_CS, HIGH);
  pinMode(MCP1, OUTPUT);


  vspi = new SPIClass(VSPI);

  vspi->begin(PIN_NUM_CLK, PIN_NUM_MISO, PIN_NUM_MOSI, PIN_NUM_CS);

  delay(1000);

  ads7953_setup();

  Serial.println("Setup complete");
}

void loop() {

  ads7953_readData();
  delay(3000);
}



void ads7953_setup()
{
  digitalWrite(MCP1, HIGH);
  delay(5);

  /* Reset Command */

  vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
  digitalWrite(MCP1, LOW);
  vspi->transfer(reset_cmd >> 8);
  vspi->transfer(reset_cmd & 0xFF);
  digitalWrite(MCP1, HIGH);
  vspi->endTransaction();

  delay(100);
  /* Select Auto mode 1 */


  vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
  digitalWrite(MCP1, LOW);
  vspi->transfer(auto_mode_1 >> 8);
  vspi->transfer(auto_mode_1 & 0xFF);
  digitalWrite(MCP1, HIGH);
  vspi->endTransaction();

  delay(100);

  /* Select All channels */


  vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
  digitalWrite(MCP1, LOW);
  vspi->transfer(select_all_channels >> 8);
  vspi->transfer(select_all_channels & 0xFF);
  digitalWrite(MCP1, HIGH);
  vspi->endTransaction();

  delay(100);

  /* Reset Counter to channel 1 */


  vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
  digitalWrite(MCP1, LOW);
  vspi->transfer(reset_counter >> 8);
  vspi->transfer(reset_counter & 0xFF);
  digitalWrite(MCP1, HIGH);
  vspi->endTransaction();
  delay(100);

  /* Read First Null Frame */

  vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
  digitalWrite(MCP1, LOW);
  int proxydata = vspi->transfer(0);
  proxydata = vspi->transfer(0);
  digitalWrite(MCP1, HIGH);
  vspi->endTransaction();
  delay(100);


}


void ads7953_readData()
{
  for (int i = 0 ; i < 16 ; i++)
  {
    vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
    digitalWrite(MCP1, LOW);
    int adc_data = vspi->transfer16(0x1880);
    digitalWrite(MCP1, HIGH);
    vspi->endTransaction();

    Serial.print("SPI Data received : ");
    Serial.println(adc_data );

    delay(10);

    vspi->beginTransaction(SPISettings(ADC_CLK, MSBFIRST, SPI_MODE0));
    digitalWrite(MCP1, LOW);
    adc_data = vspi->transfer16(0);
    digitalWrite(MCP1, HIGH);
    vspi->endTransaction();

    Serial.print("SPI Data received : ");
    Serial.println(adc_data );


    delay(1000);

    Serial.println(adc_data, HEX);

    int channel = adc_data >> 12;
    int adc_v = adc_data & 0xFFF;


    ch[channel] = (adc_v * VREF) / 4095.0 ;

    Serial.print("Channel : ");
    Serial.print(channel);
    Serial.print("\t ");
    Serial.print(ch[channel]);
    Serial.println(" mV");
  }
}