GSM2 Click Interfacing.

Hi All,

I'm a bit stuck when trying to send a text message via my GSM2 Click device which uses the M95 chip.

I have the module accepting AT commands through Serial4 however I really can't get the syntax working correctly to send a SMS message sucesfully.

I can carry out the following commands:

I firstly set the chip to Text Mode:

>Serial4.println("AT+CMGF=1"); 
=undefined 
�AT+CMGF=1

I then set the number to send the SMS to (I have added in the xxx's for anonymity)

>Serial4.println("AT+CMGS=\"078177xxxxx\"");
=undefined
uAT+CMGS="078177xxxxx"

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OK

As you can see there is a lot of garbled characters but the output is an "OK" at the end.

I then assume that the Serial4 is sat at the ">" prompt where I would then enter the text for the text message so I go ahead with the following command:

>Serial4.println("testing a sms message");
=undefined

From here I know I need to send a CTRL+Z character at the prompt to send the message so I carry out the following:

>Serial4.write(0x1A);
=undefined

However.. I receive nothing. I would expect to see an ID number pop up and the message to go through to my phone.

Any ideas where I am going wrong here I've been messing around with all the variants I can think of - changing the Serial.write to print and print to println with no luck.