#include <Wire.h>
#include <Adafruit_Sensor.h>
#include <Adafruit_BNO055.h>
#include <SoftwareSerial.h>

// SoftwareSerial emulation for Wokwi
// RX, TX pins for GPRS module
SoftwareSerial gprsSerial(8, 9);

String APN = "your_APN"; // Access Point Name for your carrier

void setup() {
  Serial.begin(9600);
  gprsSerial.begin(9600);
  
  // Connect to GPRS network
  initializeGPRS();
}

void loop() {
  // Example: Send a POST request to a server
  sendHttpPostRequest("http://your-server.com/api", "data=Hello");

  delay(5000); // Delay between data transmissions
}

void initializeGPRS() {
  gprsSerial.println("AT");
  delay(1000);
  gprsSerial.println("AT+CGATT=1");
  delay(1000);
  gprsSerial.print("AT+CSTT=\"");
  gprsSerial.print(APN);
  gprsSerial.println("\"");
  delay(1000);
  gprsSerial.println("AT+CIICR");
  delay(3000);
}

void sendHttpPostRequest(String server, String data) {
  gprsSerial.println("AT+CIPSTART=\"TCP\",\"" + server + "\",80");
  delay(2000);
  gprsSerial.println("AT+CIPSEND");
  delay(1000);
  
  // HTTP POST request
  gprsSerial.print("POST / HTTP/1.1\r\n");
  gprsSerial.print("Host: ");
  gprsSerial.println(server);
  gprsSerial.println("Content-Type: application/x-www-form-urlencoded");
  gprsSerial.print("Content-Length: ");
  gprsSerial.println(data.length());
  gprsSerial.println();
  gprsSerial.println(data);
  
  delay(1000);
  gprsSerial.println((char)26); // End of data transmission
  delay(2000);
  gprsSerial.println("AT+CIPCLOSE");
  delay(1000);
}