Hserin/hserout ?

[mister_e]

mmm. Actually you don't need this DEFINE HSER_BAUD since DEFINE HSER_SPBRG do the same job but i don't think it's the problem source.

What about if you remove the timeout label?

Did you try Hyperterm or else to send the expected string to the PIC?

[Scott]

mister_e,

Yes, I have been successfull connecting and sending the expected strings back to the PIC from the PC. Again, I do the same thing with the modem to hyperterminal and send the at commands and get the correct response.

This is the first time I have tried to connect to the modem using the USART a MAX232 transceiver. Usually I utilize other pins and use SERIN/SEROUT inverted and non-inverted and it has been working well with some of my other hardware.

I have changed the 232 transceiver with a ST232 and a MAX332 with the same results.

Tonight I will use the same hardware then remove the trace to the USART and connect to PORTC.4 for my TX and PORTB.3 for RX and see if this works.

Thanks, Scott