PIN_D7 on PIC18F4580

mdares · Joined: 26 Oct 2005 Posts: 19

Hi all,

Can someone tell my why this pin is not defined in the 18F4580.h file, and why in the debugger it shows me the MSB of portd/trisd as an X? The chip datasheet doesn't give me any indication that there is anything special about this i/o pin (that I could see).

I know I must be missing something simple here, but I can't seem to make sense of it. I am having a problem with a project I am migrating from a 18F458 chip where I use this pin to write to an LCD.

Matt

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

What's your compiler version ? PCH vs. 3.241 has it defined:

mdares · Joined: 26 Oct 2005 Posts: 19

I am uning 3.242, just upgraded from 3.224 when I noticed the problem. It is defined properly in the device editor, but only displaying 7 bits in the debugger (portd/trisd show up as set to x1111111 under peripherals in the debugger).

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

What if this is a debugger issue, and not a compiler or hardware issue ?

mdares · Joined: 26 Oct 2005 Posts: 19

I think I found it:

When I regenerated the header file for the new project with the updated compiler it set this fuse:
#FUSES NOXINST

which was under 3.224 was (or maybe by a misclick from me)
#FUSES XINST

Anyway this seems to have been my problem.

Thanks for your time
Matthew Dares