#INT_RDA with two Stream Serial Ports

[bertronicom]

I would like ask to you the next question,

If I'm using two serial ports as,

#use rs232(STREAM=BT_id, baud=9600,parity=N,xmit=BT_TX,rcv=BT_RX,bits=8,FORCE_SW,ERRORS)

#use rs232(STREAM= HOST_id, baud=9600,parity=N,xmit=HOST_TX,rcv=HOST_RX,bits=8,ERRORS)

If I want to detect incoming bytes by using interrupt #INT_RDA...

Each byte incoming over the two diferent Rcv ports are reading ???

#INT_RDA
void Read_Serial{
if kbhit(BT_id)
Rx=fgetc(BT_id);
if kbhit(HOST_id)
Rx=fgetc(HOST_id);
}


Is this correct???

thanks in advance

[dyeatman]

#INT_RDA is the receive interrupt from the hardware UART so it only works when you use the UART and only for that one RS232 stream.

If you specify the UART TX/RX I/O pins but use the FORCE_SW parameter then the UART again will not be used and the INT_RDA won't work.

[Humberto]

bertronicom wrote:

[bertronicom]

Sorry, I forget to add more details

BT_id stream is conected to hardware UART (Rx and Tx pins)
HOST_id stream is conected to general purpose I/O pins.

I'm using PIC18LF252 with only one UART.

Then I' going to do getc(BT_id) in ISR because this is hardware UART

Thanks a lot

[Mark]

[dyeatman]

As I said above you CANNOT include the FORCE_SW parameter if you are going to use the hardware UART. That parameter must be removed from the BT_id RS232 stream definition.