PortE problems (PIC18F4455)

[mister_e]

adcon1=$0F
is one of the setting that will work...

datasheet ....

[RubenR]

Thanks, I thought I'd tried everyting, but it works fine now.

[RubenR]

Now I would like to disable the USB-controller of this pic, because I don't need this feature and I have to use the input pins RC4 and RC5.
I've read the datasheet and I can disable USB by setting bit3 (USBEN) of the UCON register to zero. The problem is that it looks that PBP doesn't know the commands I want to use. I think i have to use assembly. I tried the following, but I get a warning.

ASM
MOVLW 0h
MOVWF UCON
ENDASM

Warning:
Found opcode in collumn 1. (MOVLW)
Found opcode in collumn 1. (MOVWF)

I think my assembly knowledge is very bad

[mister_e]

Reason is that there's no UCON register definition in the PIC18EXT.bas file

look at the end and add it like this

TXREG2	VAR	BYTE EXT
TXSTA	VAR	BYTE EXT
TXSTA1	VAR	BYTE EXT
TXSTA2	VAR	BYTE EXT
UCON    VAR	BYTE EXT <= here
VELRH	VAR	BYTE EXT
VELRL	VAR	BYTE EXT
WDTCON	VAR	BYTE EXT
WREG	VAR	BYTE EXT

hey!!! don't place the comment to the right

[Demon]

Hi Steve,

I also need to add UCON and UCFG for a PIC 18F4550. Adding the variables in the file mentionned above corrects the undefined error at compile time, but how do those variables get linked with the proper registers?

Robert

[Demon]

Ruben,

Unless I am mistaken, the USB module is disabled by default. That's why I need to turn it on for USB processing. If you need to use pins C4-5 as IO, you should not have any problems doing so.

Or did I read the datasheet backwards?

Robert

[Demon]

I think I found a clue from Steve about where the variable would get linked to the actual register:
http://www.picbasic.co.uk/forum/show...75&postcount=5

Now I have to find the right file to edit and the right address.

Robert