SM5100B

Forum 2005-2010 (read only) Hardware Interfacing
1

hey.

I Got the SM5100B GSM/GPRS Module and the SM5100B Evaluation Board SparkFun SM5100B Evaluation Board - CEL-09427 - SparkFun Electronics, im trying to connect the arduino to the evaluation board. what i did was i connect the 3 VBAT pins from the board to the 3V3 arduino pin, the 5 Gnds From the board to the arduino, the RXD0 to the Arduino TX and the TXD0 to arduino RX.

Im using this sketch to see if everithing is working

#include <NewSoftSerial.h> //Include the NewSoftSerial library to send serial commands to the cellular module.
#include <string.h> //Used for string manipulations

char incoming_char=0; //Will hold the incoming character from the Serial Port.

NewSoftSerial cell(2,3); //Create a 'fake' serial port. Pin 2 is the Rx pin, pin 3 is the Tx pin.

void setup()
{
//Initialize serial ports for communication.
Serial.begin(115200);
cell.begin(115200);

//Let's get started!
Serial.println("Starting SM5100B Communication...");
}

void loop() {
//If a character comes in from the cellular module...
if(cell.available() >0)
{
incoming_char=cell.read(); //Get the character from the cellular serial port.
Serial.print(incoming_char); //Print the incoming character to the terminal.
}
//If a character is coming from the terminal to the Arduino...
if(Serial.available() >0)
{
incoming_char=Serial.read(); //Get the character coming from the terminal
cell.print(incoming_char); //Send the character to the cellular module.
}
}

but the only thing i get is

Starting SM5100B Communication...

2

Sprinkle in some more serial prints to see if you are getting into either of the if-available loops (or or turn on some LEDs or something).
You apparantly don't from the cell port, how about the serial port?

3

If you are going to send text, you need to issue some commands to the cell phone module to get it in the right frame of mind. Those commands are detailed in the App. Note that sparkfun links to.