PIC Dont work at 19200kbs

[jaime]

I have a litle program with a pic and a mobile phone siemens me45, that works at 9600kbs, but dont work at 19200kbs.

I test the phone with hyperterminal and the phone works at 9600kbs and 19200kbs (the phone auto select baud rate)

i connect the pic to hyperterminal and the pic sends tha commands at 19200...

What should be the problem?

Thanks

[Ttemah]

What PIC?.
What crystal frequency?.
Have you checked what extra commands may be needed to autobaud?. Most of the units, require that you send something like the line-feed character a couple of times as the first characters, to trigger the automatic switch.

Best Wishes

[Mark]

[jaime]

well

PIC16f628A at 20MHz

i send the command and then i wait the response... i only send another command after receive the ok...

It's working good at 9600KBS

With hyperterminal, i just change the baudrate and no need to send nothing after the command.

[Mark]

Did you miss the part where I said post a small test program? Obviously the PIC can talk at 19.2K since Hyperterminal works so most likely the problem is in your code.