pic18F6722 issues

[mister_e]

This error message may be due because your PGD/PGC/MCLR line are loaded... or sometime because the PGM pin is not loaded to gnd. Or worst... you haven't selected the right device in your device programmer software... oh yeah it happen even if you already did it millions time before

[ptig185]

Hi,
I've add the PDF generated by primoPDF.
I have the PGM pin pulled low by a 4.7k. I will scope the PGD abd PGC lines next. There is nothing different about them from my other working designs but then there is always something else possible. I have only the parts populated that have to do with programming the PIC. The eepoms are not on the board yet nor is the XBEE transceiver.

Thanks,
Brian

[mister_e]

Schematic please..........

[ptig185]

Hi,
ExpressPCB has a schematic capture but I don't usually spend the time with it. I "read" the PCB instead.

Brian

[ptig185]

Hi,
Here is the basic schematic as I pulled it off of the .PCB file view.

[ptig185]

Hi,
I scoped the DAT and CLK lines and they see that the data line is not transitioning to ground very far (about 1/3 the way).
I measured the resistance of CLK and DAT to ground and VCC and they are open.
I don't see in the artwork any overly close traces suspecting an under etched via causing a short but don't see anything.

Brian

[ptig185]

Darned bypass caps... didn't have enough of them. Newest Artwork Programs fine.