Quote Originally Posted by mat janssen
And when the 4 ic's are on the same printed circuitboard use then shiftin/ shiftout for communications betweem them. It's fast and reliable.
Hi Mat,

I am interested in inter PIC communications but something I cant see from the manual is how ShiftIn/ShiftOut would work.

As I read it, both ShiftIn and ShiftOut DRIVE the clock signal. There doesnt seem to be an option to allow the clock to be external. It almost seems as if there should be a ClockIn/ClockOut command which was effectively the same bu used external clock, or just some added modes to the existing commands the set the clock pin as an input for external clock

Could you please expand on how you have implemented the above idea.

Regards