Using "END" Fries PICS?

[mark_s]

I had that problem with the pic18f45k80. It had something to do with using the MCLR pin as an input.
Melabs was able to help me by updating the programmer software. I don't believe the END statement
is your problem. Read this article it may help.

http://www.gooligum.com.au/tutorials...rog_issues.pdf

[Cyberdove]

I had that problem with the pic18f45k80. It had something to do with using the MCLR pin as an input.
Melabs was able to help me by updating the programmer software. I don't believe the END statement
is your problem. Read this article it may help.

http://www.gooligum.com.au/tutorials...rog_issues.pdf

The problem went away when I removed the "end" statement. It looks to me that having MCLR as an input pin and then declaring it as an output and then writing "end" in the mainloop causes the MCLR pin to be pulled low when it is powered up, thereby ignoring MCLR when trying to program it. That is a curious state of affairs. I wonder if there is a way around this?

[Demon]

Look at the datasheet and confirm the MCLR pin can be used as an output. MCLR on the 18F44K22 can only be an input; making it an output can have unexpected results.

Robert

[Cyberdove]

Look at the datasheet and confirm the MCLR pin can be used as an output. MCLR on the 18F44K22 can only be an input; making it an output can have unexpected results.

Robert

I was able to program the chip by pressing the "program" button on the meProgrammer about a half second after the chip powered up. This prevented the program from reaching the "end" statement.