Print the response from GSM shield

Question

I have a GSM shield connected with my Intel Galileo board.

I intend to connect the board with serial communication at a baud rate of 115200 instead of the GSM library. I want to print the results of "at" commands in my serial window, how should I do it?

• Majenko: Send the commands, read the responses, print the responses. What's so tricky about that?
• Aswin Raghavan: well can u kindly give the syntax for printing those responses ?? plzz
• Majenko: arduino.cc/en/Reference/Serial

Answer 1

I have only worked with the SIMCOM series of GSM modules like the SIM900 and the SIM808. Here is a sample of the kind of code you should be looking at using. It will send one "AT" to the GSM module and then it will spit out the result in the serial monitor.

void setup()
{
 Serial.begin(115200);
 int bytesSent = Serial.write("AT\r\n"); //send "AT" and send the end of line characters to signify end of the command
 }
 void loop()
{
 if (Serial.available() > 0) {
 // read the incoming byte:
 incomingByte = Serial.read();
 }
}

• Chris Stratton: This seems a bit confused and probably unworkable - the Serial Monitor and the GSM module are both serial-interfaced devices (or at least appear to be so in the Arduino world), but you only use a single serial interface and seem to somehow imagine that it is independently connected to both of them.
• Brandon: I copied the normal serial command and left in the echo by mistake. Thanks for pointing that out.
• Chris Stratton: Now it produces no output and so does not achieve the goal of the question. The question requires two serial ports.