- Tue Jan 30, 2007 1:34 pm
#25690
Hi all,
I'm not sure if anyone's tried this before, but I thought I'd post it to see if the idea is sound. I'm not quite done wiring up the board yet, but I think I may have a way to program the PICs using only one ICD2 connector.
The general idea is this: Have the program, MCLR, and GND pins of each PIC connected together (and connected to the ICD2 header). Then connect the power pin on each chip to a series of switches, such that one can enable the power to all, none, or some subset (e.g. one) of the pics. The idea, hopefully, is that to program a given PIC one would just disable the power to each of the other PICs and hope that there isn't any interference on the program/MCLR lines from the unpowered PICs.
Any thoughts? It's almost wired up anyway, so I guess I'll know soon enough either way.
I'm not sure if anyone's tried this before, but I thought I'd post it to see if the idea is sound. I'm not quite done wiring up the board yet, but I think I may have a way to program the PICs using only one ICD2 connector.
The general idea is this: Have the program, MCLR, and GND pins of each PIC connected together (and connected to the ICD2 header). Then connect the power pin on each chip to a series of switches, such that one can enable the power to all, none, or some subset (e.g. one) of the pics. The idea, hopefully, is that to program a given PIC one would just disable the power to each of the other PICs and hope that there isn't any interference on the program/MCLR lines from the unpowered PICs.
Any thoughts? It's almost wired up anyway, so I guess I'll know soon enough either way.