Hi
That alarm must be acknowledged by PIC, then, in accordance with this, send a SMS using AT comand, send in serial mode to cell phone...You can order to phone send a SMS using a preset number stored in list phone, or send a text mode SMS like this
at+cmgs="+1912345678" <CR> ==> "enter" key
wait a time for phone´s answer for a ">" character, then
Alarm 1 - ON <CR>
the phone answer whit a "OK", character than you must check it to sure a sms has been sent
IN hyperterminal you should see the next:
at+cmgs="+1912345678" <CR>
>Alarm 1 - ON <CR>
here a phone´s message indicating than SMS in OK, like CMGS:OK or somethig like that...
Sorry for my bad english
Bye