Following the steps included in the sketch below first!
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// Product name: GPS/GPRS/GSM Module V3.0
// # Product SKU : TEL0051
// # Version : 0.1
// # Description:
// # The sketch for driving the gsm mode via the USB interface
// # Steps:
// # 1. Turn the S1 switch to the Prog(right side)
// # 2. Turn the S2 switch to the USB side(left side)
// # 3. Take off the GSM/GPS jumper caps from the Uart select
// # 4. Upload the sketch to the Arduino board(Make sure turn off other
Serial monitor )
// # 5. Turn the S1 switch to the comm(left side)
// # 7. RST the board
// # wiki link-
http://www.dfrobot.com/wiki/index.php/GPS/GPRS/GSM_Module_V3.0_(SKU:TEL0051)
void setup()
{
//Init the driver pins for GSM function
pinMode(3,OUTPUT);
pinMode(4,OUTPUT);
pinMode(5,OUTPUT);
//Output GSM Timing
digitalWrite(5,HIGH);
delay(1500);
digitalWrite(5,LOW);
}
void loop()
{
// Use these commands instead of the hardware switch 'UART select' in order to
enable each mode
// If you want to use both GMS and GPS. enable the required one in your code and
disable the other one for each access.
digitalWrite(3,LOW);//enable GSM TX、RX
digitalWrite(4,HIGH);//disable GPS TX、RX
}
How to Send a message
