added rtc_enableSqWave fn
new setupTimer3_1shot fn
tmp testing, not working yet
set up test function
minor rearrangements
working fn "O", reads RTC sq wave cycle
trying for shorter latency, got irregular latency
put back the way it was
put cycle counter into its own fn
small test procedure
look at baud register
test routine, 10 loops
finer diagnostics
more detail: sum 64 RTC cycles, test 100 OSCCAL values
seems to correctly tune osc to 7.3728 MHz, tested at 9600 baud
tweaks to use best OSCCAL
detailed init of baud rates
uC tuned to 7.3728 MHz on startup
115k baud bluetooth implemented
fn to show firmware version