Shawn Wilton wrote:
> No, the pins don't have any load on them.
>
> I followed peoples advice to pull the PIC from the board and actually put
> the ICD in-circuit.  Put some wires on the SMD pads and now I am currently
> trying to get the ICD debugger to work.  But it just gives me this output:
>
> Connecting to MPLAB ICD 2
> ...Connected
> Setting Vdd source to MPLAB ICD 2
> Target Device PIC12F675 found, revision = Rev 0x2
> ICDWarn0044:  Target has an invalid calibration memory value (0x0).
> Continue?
> ...Reading ICD Product ID
> Running ICD Self Test
> ...Passed
> MPLAB ICD 2 Ready
> Programming Target...
> ICDWarn0044:  Target has an invalid calibration memory value (0x0).
> Continue?
> ...Validating configuration fields
> Connecting to debug executive
> Entering Debug Mode
> ...Programming GOTO 0x00 command
> ICD0083: Debug:  Unable to enter debug mode.  Please double click this
> message for more information.
> MPLAB ICD 2 Ready
> Resetting Target
> Entering Debug Mode
> ...Programming GOTO 0x00 command
> Resetting Target
> MPLAB ICD 2 Ready
> MPLAB ICD 2 Ready
> Entering Debug Mode
> ...Programming GOTO 0x00 command
>
>
> All the self-tests pass.  I have this connected to the circuit.  I have
> tried both with and w/o the target board powered and have also tried w/o the
> debug header connected to the board.  I would think that even if the target
> board were not connected, I would still be able to launch in to the debugger
> and watch my code execute on the attached pic12f675 header board.
>
> Any help or ideas, as always, appreciated.
>
>   
Hi Shawn.... others.

I have been doing battle with my ICD2 for the last couple of days as 
well. I have been having intermittent problems, sometimes it works fine 
for a few hours, then, it begins failing with one type of error (unable 
to switch mode=TM, also unable to identify processor) or some such 
message, it does that for a  few hours, then it does a message stack 
very similar to your's, Shawn, with the ICDWawn0044, the ICD0083, and 
sometimes the ICD0053 thrown in too.

I tracked mine back to the RJ11 connector in the ICD2. If I push the 
ICSP cable hard in to the ICD2, it works, but if I tug gently on it so 
it rests against the RJ11 retaining clip, it stops working. I think the 
actual RJ11 socket is not "springy" enough, or something. But, you can 
push the cable in until it clicks, then push it that extra millimeter 
more..... works for me.

For the record, I don't have an oscilloscope, and I tracked this back by 
putting LED's on the ICSP lines, and figures out that Vpp was not being 
driven properly.... and playing with the cable caused the Vpp to go 
high. ICSP works find while driving LED's off *each* line through 330Ohm 
resistance....

This may or may not be your problem.

Rolf



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