Example Code for Arduino-TCP Communication (AT Commands)-V1.0

Hardware Preparation

• DFR0216 DFRduino UNO R3 ×1
• SIM7600CE-T Shield ×1
• External Power Supply ×1

Software Preparation

• Download and install the Arduino IDE: Click to Download Arduino IDE
• Download and install the Serial Debugger: Click to Download Serial Debugger

Preparations

1. Insert SIM card into SIM7600CE-T shield, then connect it with Arduino UNO and plug in the external power supply.
2. Press “Boot” to start the module, and wait for SIM card to be successfully registered into Network, which means Net indicator begins to flash quickly.
3. Select D0/D1 or D7/D8 as communication serial port through jumper cap according to the type of controller board.
4. Take Arduino UNO as an example, download the following code to UNO and connect RX-D8/TX-D7 by jumper cap.

Sample Code

#include <SoftwareSerial.h>
SoftwareSerial myserial(7, 8); //Define virtual serial port name as myseria,Rx is port 7, Tx is port 8
void setup()
{
  myserial.begin(115200); //Initialize virtual serial port
  Serial.begin(115200); //Initialize Arduino default serial port
}

void loop()
{
  while(1){
  while (myserial.available()) {
    Serial.write(myserial.read());//if Serial received data, output it via mySerial.
  }
  while(Serial.available()) {
    myserial.write(Serial.read());//if myserial received data, output it via Serial.
  }
}
}

Result