def crate_enabler():
try:
if (not crate_disable.is_set()) & (not power.is_set()):
lzamp.power_on()
power.set()
except (KeyboardInterrupt, SystemExit):
raise
except Exception:
exception_traceback_log.exception('The following error occurred:')
pass
if snum >= 0:
print('\nSerial Number {:d} successfully written to board.\n'.
format(snum))
serNums[slot - 1] = snum
break
elif ii < 5:
print('\nUnable to write serial number to board, try again.\n')
else:
print('\nFatal error occurred, exiting\n')
exit()
if check_input_yn('\nAre green lights off on all amp boards? (y/n) '):
print('fatal error, exiting.')
exit()
lzamp.power_on()
if check_input_yn('\nAre green lights now lit on all amp boards? (y/n) '):
print('fatal error, exiting.')
exit()
t = Thread(target=loop_AMP_heartbeat)
t.start()
sleep(1)
if check_input_yn(
'\nAre the red LEDs on the AMPs flashing in the correct order (1, 2, 3, 4)? (y/n) '
):
print('fatal error, exiting. AMPs were installed incorrectly.')
event.set()
t.join()