Some information:
- http://www.nongnu.org/simulavr/usage.html
- https://reprap.org/wiki/SimulAVR

Get all available tracers:
$ simulavr -d atmega32 -o -

Run simulator for 10.000 ns with tracers in tracers.txt and output VCD trace
to trace.vd:
$ simulavr -d atmega32 -t foo -c vcd:tracers.txt:trace.vcd:rw -m 10000 -F 8000000 -f portdemo.atmega32

Visualize trace:
$ gtkwave trace.vcd
