Pic to GSM Phone connection (HSerin problems)

[Ioannis]

Russel:

Maybe if you interchange the tx and rx lines?


Ziki:

Try not to Pause after a Hserout command. Wait for a real answer from the device like the example I gave at http://www.picbasic.co.uk/forum/show...&postcount=198
Also I think raising clock from 4 to 8 ro 16MHz might help.

Ioannis

[Ziki]

hi ...still canot work .. i chnage my code to this ..it canot send sms )

DEFINE OSC 8
DEFINE HSER_TXSTA 24h
DEFINE HSER_RCSTA 90h
DEFINE HSER_BAUD 9600
DEFINE HSER_SPBRG 129
DEFINE HSER_CLROERR 1

sms:

HSEROUT ["AT" ,13,10]
hserin 5000,sms,[WAIT("OK")]


HSEROUT ["AT+CMGF=1" ,13,10]
hserin 5000,sms,[WAIT("OK")]


HSEROUT ["AT+CMGS=",34,"my number",34,13,10]
hserin 5000,sms,[WAIT(">")]


HSEROUT ["hello",26,13,10]
pause 5000

end

[Ioannis]

I suppose you did change also the crystal from 4 to 8MHz, not only the Define, right?

Ioannis

[Ziki]

yup...i change my hardware too...

[Ioannis]

Have you set the mobile to TEXT SMS mode prior to use the code you sent as an example?

Also have you disabled the echo of the device (by ATE0)?

Test the same commands with a terminal to compare the results.

More than that I cannot help. Sorry.

Ioannis

[Russell]

i have implemented the given circuit(only the right portion).
i used 8Mhz crystal.
but no result.
can you please help me.

[mister_e]

So i hope you have include the Max232 (icl232) too?