(Solved) Pickit 3 weirdness

[augustinetez]

Having a weird problem with programming a 12F1840 this morning, anybody else come across anything similar.

If I have EEprom programming enabled, I am getting a 'Programming failed at EE Data address 0x0009' message.

Turning off EEprom programming and it programs fine (but the program is useless without the EEprom data).

I have tried another known working program for the 12F1840 that programmed fine previously and that also reports the same error (same error address).

Programs a 12F629 fine with the '629 version of the same file and EEprom Programming enabled.

Nothing changed hardware wise in my programming setup - Pickit 3 and standalone programming adapter with ZIF socket.

 

[augustinetez]

Problem solved (I think).

Somewhere along the line, 'Use VPP First Program Entry' had become unticked - ticked it and no error, not sure why the '629 programmed OK in that configuration though.

 

[Pommie]

If you use Vpp first mode then Vdd MUST be supplied by the PK3 otherwise it can't be supplied second. Is it set for the PK3 to supply Vdd?

Mike.

 

[augustinetez]

Yes PK3 supplies VDD - I hardly ever use ICSP, normally use an adapter for off board programming.

Think I worked out why VPP first got unticked - if you start up the PK3 software without a chip in the adapter board, it seems to untick VPP first.

 

[Nigel Goodwin]

Yes PK3 supplies VDD - I hardly ever use ICSP, normally use an adapter for off board programming.

More trouble than it's worth for an 8 pin device