>
>Keep this LED blinky circuit handy, it's a great troubleshooting tool.  the
>LED is the ultimate poor-man's emulator - you know you are alive if the LED
>blinks, and it can count for you, blink patterns for error messages, and
>prove you got from Point A to Point B in the code.
>
>These kind of questions are NOT noise, there are no stupid questions on the
>PIClist (except "how do I unsubscribble?")
>--Lawrence


Indeed.

I use a version of this in AVR projects, a subroutine called PING.
Ping puts a number of pulses on a single pin.
With a scope, I look at the pings, and I can watch what's going on.

ldi     TEMP,5
rcall   Ping

Pop a few of these in key areas, like ISRs, and you'll have a very good
idea what's happening (or not happening)

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