18F4550 programming failed using PICkit4 while verifying "User ID memory"

[Demon]

Any idea what it's crying about?



I had to slow the programming speed to SLOW or else I'd get speeding errors.

Program, configuration and EEdata memory seem to verify just fine. It looks like it failed at "User ID memory" - whatever that is.

This was programmed 15 years ago; no idea what's on that memory location.

Robert

[mpgmike]

Out of curiosity, did you try the PIC to see if it actually programmed? Usually the "User ID Failed" shows up before it even tries to program. Just asking.

[Demon]

Out of curiosity, did you try the PIC to see if it actually programmed? Usually the "User ID Failed" shows up before it even tries to program. Just asking.

It says "programming/verify" complete though?

Gotta go feed the dogs. Gonna try with just a blinky program (this is an old program that worked way back when).

Robert

[tumbleweed]

I don't think it's complaining about the UserID area, it's just a poorly arranged display making it look that way.
The UserID is located at 0x200000-0x200007 in that part.

It looks to me that it's complaining about location 0xcc0, which is in program memory.
Try doing an erase and then a blank check.

There's a later toolpack for the 18F devices... maybe try updating it?

[Demon]

Got a new pack, same problem.




It already says ERASIN SUCCESSFUL midway down the pic.

Not sure what to try next. I don't get why I can program a 16F877 without problems.

Gonna gut my program and try to BLINKY, see if that makes a difference.

Robert

[Demon]

Gutted all the USB and interrupt stuff, added just a basic blinky, and it worked.

[Demon]

So I tried with a brand new 18F4550, same error: