[arduino code examples for G1]-05 GSM test

Code:
#include <HardwareSerial.h>



// Define serial port

HardwareSerial SimSerial(1); // Use hardware serial port 1 (GPIO9 and GPIO10)



void setup() {

  // Initialize USB serial port (default serial port 0)

  Serial.begin(115200);

  while (!Serial) {

    ; // Wait for USB serial port to connect

  }



  // Initialize SIM7600 serial port

  SimSerial.begin(115200, SERIAL_8N1, 9, 10); // RX=GPIO9, TX=GPIO10

  //Serial.println("ESP32-S3 begin work");

}



void loop() {

  // If data is received from the computer, forward it to the SIM7600 module

  if (Serial.available()) {

    while (Serial.available()) {

      char data = Serial.read();

      SimSerial.write(data);

    }

  }



  // If data is received from the SIM7600 module, forward it to the computer

  if (SimSerial.available()) {

    while (SimSerial.available()) {

      char data = SimSerial.read();

      Serial.write(data);

    }

  }

}