Oli Glaser wrote:
>> If I really needed to know what a A/D reading was in this setup as a
>> one-off, I would probably use two pins, one clock and one data.  A
>> sequence of 10 clocked bits is short enough to be captured on a
>> scope and then analysed by hand.  It's only 10 bits after all.
>
> Yes, that's the kind of thing I was thinking of when I mentioned bit
> banging stuff - a couple of pins, or maybe just one Tx pin if they are
> in short supply, then you could use the PicKit2 UART tool. I have done
> this quite a lot - I just use the PGC/PGD pins as the Tx/Rx so it
> saves having to move the PicKit2 connections at all.

Yes, you could do it with one pin and a UART to receive bytes.  The problem
with that is that the timing has to be just right.  While that's doable,
it's a lot more work than just clocking out 10 bits and analyzing the scope
capture once or twice.  If you had to do it regularly, then the extra effor=
t
of creating a software UART at a standard baud rate could be worth it.


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