arduino AT commands serial comm. to SIM908 (SIM908 board busted or coding error)

Projects Networking, Protocols, and Devices
1

Hello

I'm trying to send AT commands to the SIM908, bought off ebay,

SIM908 Board: http://www.ebay.com.au/itm/SIM908-Module-Development-Board-IPX-SMA-with-GPS-Antenna-for-Arduino-Raspberry-/171537455980

Using Leonardo Arduino board, also tried UNO board.

I just want to confirm whether the board is busted or the code/process is wrong.

The Leonardo code is

void setup() {
 Serial.begin(9600);
 Serial1.begin(115200); -> Says in the manual(but changed it to check other baud rates)
 while(!Serial1)
 {
 }
Serial.println("AT");
}

void loop() {
 
  if (Serial1.available()) {
    int inByte = Serial1.read();
    Serial.write(inByte); 
  }
  
 
  if (Serial.available()) {
    int inByte = Serial.read();
    Serial1.write(inByte); 
  }
}

And my process is:

  1. Connect wires
    GPRStxd->RX(D00)
    GPRSrxd->TX(D01)
    GND-> GND
    VCC -> 3.3V

2.Turn on Arduino then load code it.
3.Turn on SIM908 pressing power the other (2 L.E.Ds) turn on,1 blinking.
4. I try to send AT using different Baud rates, no response.

Also tried M2Msupport module tester no ports found/ no response.

Any help greatly appreciated.

2

Never Mind, I found out the board is busted.