MN testing tips

[nerdralph]

I've found a couple things that have made testing MN a bit easier:

When working without an external xtal, I sometimes hard-code the OSCCAL value in order to eliminate tuner problems as a variable. There's a simple way to find out the factory OSCCAL value with avrdude:
avrdude -p t85 -c usbasp -q -U cal:r:-:h

Since reliability testing requires dozens of repeated test runs, I write scripts to help. Here's an example:

#!/bin/bash

for i in {1..50}
  do ~/github/mn25/commandline/micronucleus.exe --erase-only --fast-mode
  echo "cycle $i: $?"
  results=$results$?
done
echo "results: $results"