gsm mobile interface to pic

vijay s · Joined: 20 Oct 2007 Posts: 17 Location: coimbatore,india

hai.. i need a help to interface gsm mobile with pic microcontrollers for my project.. please any one help me with drivers and code

ckielstra · Joined: 18 Mar 2004 Posts: 3680 Location: The Netherlands

Your question is not detailed enough.
The interface to every brand of mobiles is different, which mobile are you using? Do you want to use Text messages (SMS), FAX, speech, raw data, internet, or all them?

Have you tried the search function of this forum? This topic has come up several times before. Also have look at the website or forum for your mobile.

vijay s · Joined: 20 Oct 2007 Posts: 17 Location: coimbatore,india

i need to use text message for my project.. i have sony ericsson mobile.. and i'm new to this field ..can you help me with driver and codes

ckielstra · Joined: 18 Mar 2004 Posts: 3680 Location: The Netherlands

I can give you some hints but I know nothing of the Sony Ericsson telephones.

The basic commands to control the telephone are the same for all manufacturers and are described in the ETSI GSM 07.07 standard and a few other documents. The commands are called 'AT'-commands because these are the two letters that every command starts with. For example the command to send an SMS is 'AT+CMGS'.

Every manufacturer has added their own commands to the standard set, so it is best to find the AT Commands Reference Manual for your specific model. Using Google and the keywords: ericsson "AT command" reference
I found the following link: http://developer.sonyericsson.com/getDocument.do?docId=65054
This is a zip file with 5 AT Command Reference manuals for the telephones produced in 2003 - 2007.

For more documents and a good discussion forum: http://developer.sonyericsson.com/

For experimenting it is best to connect your phone to your PC first. Check the manual of your phone for how to do this. Type the commands by hand and see what happens. Only when you have this working start thinking about connecting your telephone to the PIC.

Tip 1: use a telephone with a serial RS-232 cable. A phone with a USB cable is (almost) impossible to connect to a PIC processor.
Tip 2: Search this CCS forum with the keyword 'CMGS' for other people using SMS on a PIC.