gsm sim900a

senthil.ray · Joined: 26 Apr 2015 Posts: 1 Location: india

pls send to sample code gsm sim900a
module

temtronic · Posted: Thu Dec 22, 2016 1:55 pm

We'd have to know which PIC and what GSM module you have....

Ttelmah · Joined: 11 Mar 2010 Posts: 19550

This is not a 'supply code for you' forum.
Write some code, and we will try to help you.
There is basic code for this modem in the code library.

benoitstjean · Posted: Mon Dec 26, 2016 11:08 am

There are a million things you can do with a GSM modem (make calls, send IP data, send SMS etc). I have already been through the excercise with the SIM-family long enough that in all honesty, and I'm not saying this to be mean, but if you can't figure it out on your own, you will have a very hard time making it work.

These modems are quite picky and although they work well when you manage to iron-out all the intricacies, you will most likely need a logic analyzer to make sure that you understand what is going on and it is not that simple.

You need to understand how each message and response works, how the PIC devices work, how a UART works etc. There's much more to just plug-and-play.

Start by understanding the PIC MCU, make it work then start analyzing the SIM900. You haven't specified if you're using the modem alone or on the development board.

Good luck.