1.Send_data_via_wifi.ino

#include <WiFi.h>
#include <WiFiUdp.h>
#include <SPI.h>

//ADC
//#define button_pin 7
const int button_pin = 7;
const int chip_select = 10; // Assuming SPI chip select pin
int test_DRDY = 5; 
int button_state = 0; 
const int size_of_data = 1350; //864;
byte output[size_of_data] = {};

//WiFi
char ssid[] = "Wifi Name";
char pass[] = "password";
WiFiUDP udp;

void sendCommand(byte command) 
{
  SPI.transfer(command);
}

void writeByte(byte registers, byte data) 
{
    char spi_data = 0x40 | registers;
    char spi_data_array[3]; 
    spi_data_array[0] = spi_data;
    spi_data_array[1] = 0x00;
    spi_data_array[2] = data;
    SPI.transfer(spi_data_array, 3);
}

void setup() 
{
  //ADC
  pinMode(button_pin, INPUT); //initialize the led pin as output
  pinMode(chip_select, OUTPUT);

  digitalWrite(chip_select, LOW);
  SPI.begin();
  SPI.beginTransaction(SPISettings(600000, MSBFIRST, SPI_MODE1)); 
  sendCommand(0x02); // wakeup
  sendCommand(0x0A); // stop
  sendCommand(0x06); // reset
  sendCommand(0x11); // sdatac

  // Write configurations
  writeByte(0x01, 0x96);
  writeByte(0x02, 0xD4);
  writeByte(0x03, 0xFF);
  writeByte(0x04, 0x00);
  writeByte(0x0D, 0x00);
  writeByte(0x0E, 0x00);
  writeByte(0x0F, 0x00);
  writeByte(0x10, 0x00);
  writeByte(0x11, 0x00);
  writeByte(0x15, 0x20);
  writeByte(0x17, 0x00);
  writeByte(0x05, 0x00);
  writeByte(0x06, 0x00);
  writeByte(0x07, 0x00);
  writeByte(0x08, 0x00);
  writeByte(0x09, 0x00);
  writeByte(0x0A, 0x00);
  writeByte(0x0B, 0x00);
  writeByte(0x0C, 0x00);
  writeByte(0x14, 0x80);
  sendCommand(0x10); 
  sendCommand(0x08); 

  //wifi
  WiFi.begin(ssid, pass);
  udp.begin(13900);
}

int a = 30;
int sc;
void loop() 
{   
    button_state = digitalRead(button_pin);
   
    if (button_state == HIGH) 
    {
      test_DRDY = 10;
    }
    
    if (test_DRDY == 10 && button_state == LOW) 
    {
      test_DRDY = 0;
      for (int i = 0; i < 27; i++) 
      {
              output[sc] = SPI.transfer(0xFF); // 0xFF is a dummy byte to trigger the read
              sc = sc + 1;
      }

        if (sc == size_of_data)
        {  
        udp.beginPacket("192.168.1.241", 13900);
        udp.write(output, sc);
        udp.endPacket();
        sc = 0 ;
        }
    }
}