for i in range(cycle_length):
display.update(Aircraft.positions)
time.sleep(delay / 1000.0)
t_end = time.time()
refresh_rate = cycle_length * 1.0 / (t_end - t_start)
if refresh_rate > 20:
delay += 1
else:
delay = max(0, delay - 1)
print(
"main: display refresh rate {:2.2f} Hz, tracking {} aircraft (alt squelch {}), gps {}"
.format(refresh_rate, len(Aircraft.positions),
"on" if Config.flight_mode() else "off", gps.get_status_str()))
try:
print("main: system temperature is {}°C".format(get_system_temp()))
except Exception as e:
print("main: unable to read system temperature: {}".format(e))
flags = get_system_flags()
if flags:
print("main: system flags: {}".format(flags))
if Config.enable_978():
# In regions where 978MHz exists, traffic may be advertised on either
# 978MHz or 1090MHz
if ac.freq == 1090:
ac.set_freq(978)
