PIC18F97J94 and INT_RDA

[Andmo]

Hello

How can i make a INT_RDA with the PIC18F97J94? This PIC has no Hardware UART on specifed Ports?

#use rs232(baud=9600,parity=N,xmit=PIN_J4,rcv=PIN_J5,bits=8,stream=gps_position,ERRORS)


Danks

[drolleman]

you need to look at peripheral pin select to assign one of the uarts to the pins you want to use. this chip has 4 of them. ccs has a pretty good documentation on this.

#pin_select U1TX=PIN_C6

#pin_select U1RX=PIN_C7

[Ttelmah]

Have a look at this thread, for how to setup a relocatable UART.

<http://www.ccsinfo.com/forum/viewtopic.php?t=43290>

Note that you _select_ the pins (as Drolleman points out), but you then don't use the pin numbers in the #USE, but the UART name.

Also, 'beware', depending on chip/compiler version/pins involved, you may need to set the tris. So (for instance), for a chip that requires the TX output to have the tris=0, then you may need 'output_drive(THE_PIN_INVOLVED);'.