TC35i GSM With PIC 16F690 help

[financecatalyst]

I think you need to check your modem with hyperterminal to check if it works correctly. If your computer doesn't have a serial port, you can obtain a serial to USB converter (check if compatible with your operating system)

Al.

I will try that hopefully tomm, and will post my findings. Thank you all for your help upto now.

[financecatalyst]

By the way, can someone tell me the expected voltages across 232 pins and modem Rx & Tx pin. I just have a funny feeling that problem is with the hardware part instead of software.

[pedja089]

Voltages shoul be about +/-10V.

First: Why have you used "0" in the instruction serout tx,0,...
Second: why have you not used serout2 and used just serout & serin2 instead of serin?

There no reason why i used serout.
0 is used to set bondrate to 2400T.
Set cursor to serout and pres F1, and everything is in help.
Program is working. I used to check conection with modem for my call & sms controller.
Code with status led:

Init:
   toggle led1
   serout tx,0,["AT",13]
   serin2 rx,396,1000,init,[WAIT("OK")] 
  serout TX,0,["at&f",13]
   pause 500
   toggle led1
  serout TX,0,["at+cmgf=1",13]
   pause 500
   toggle led1
  serout TX,0,["at+clip=1",13]
   pause 500
  led1=1
Start:....

Led will flash every second if modem is'n connected.
While setting up modem led will flash every 0.5s.
When device is ready led stay on.

[financecatalyst]

Voltages shoul be about +/-10V.

There no reason why i used serout.
0 is used to set bondrate to 2400T.
Set cursor to serout and pres F1, and everything is in help.
Program is working. I used to check conection with modem for my call & sms controller.
Code with status led:

Init:
   toggle led1
   serout tx,0,["AT",13]
   serin2 rx,396,1000,init,[WAIT("OK")] 
  serout TX,0,["at&f",13]
   pause 500
   toggle led1
  serout TX,0,["at+cmgf=1",13]
   pause 500
   toggle led1
  serout TX,0,["at+clip=1",13]
   pause 500
  led1=1
Start:....

Led will flash every second if modem is'n connected.
While setting up modem led will flash every 0.5s.
When device is ready led stay on.

After all day breaking my head - I have to say Many Thanks to all who have tried to help me and especially you for the code and Aratti (for hardware correction).
It is working now.

BUT as usual few questions to understand it better.
1) Why is it only working with serout & serin2 combination. I tried it with serout+serin & serout2+serin2 but it didn't work in this combination.

2)What is the actual difference between 0 & 396 when they BOTH are true baud 2400?
Thanks again

[pedja089]

It should be work with serout and serout2.
0 and 396...
look in help in mcs!!
396 is for serout2 and serin2
0 is for serin, serout...
you have tables in help...

[aratti]

Why is it only working with serout & serin2 combination. I tried it with serout+serin & serout2+serin2 but it didn't work in this combination.

Tray to introduce a pacing value in the SEROUT2 command. See page 140 PBP manual.

Al.

[financecatalyst]

Hi Everyone
I am now able to send text messeges. New Problem, I am unable to read an sent sms. Here is my code:
rea:
gosub one
serout2 tx,baud,["AT+CMGF=1",13]
Serin2 rx,baud,5000,rea,[WAIT("OK")]
pause 5000
gosub one
serout2 tx,baud,["AT+CMGR=1",13]
Serin2 rx,baud,5000,rea,[WAIT("REC UNREAD"),skip 3, STR num\12,skip 27,STR sms\10] 'CODE NEVER MOVES FORWARD FROM HERE
portc=255
pause 3000
portc=0
if sms[0]="t" and sms[1]="e" and sms[2]="s" and sms[3]="t" then
goto done
ELSE
goto rea
ENDIF


done:
serout2 tx,baud,["AT+CMGF=1",13]
Serin2 rx,baud,5000,main,[WAIT("OK")]
gosub two
gosub two
gosub two
serout2 tx,baud,["AT+CMGS=",34,"+44798XXXXXXXX",34,13]
Serin2 rx,baud,5000,main,[WAIT(">")]
PAUSE 500
SEROUT2 tx,baud,["done",26]
goto rea