class TimeServer:
GPS_UPDATE_PERIOD = 5000
RTC_UPDATE_PERIOD = 1000
def __init__(self, host, port):
# Available devices that we use
self.gps = None
self.rtc = None
self.oled = None
self.buzzer = None
# GPS information
self.last_gps_time = None
self.last_gps_position = None
self.ipcon = IPConnection()
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self.cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self.cb_connected)
self.ipcon.connect(host, int(port))
self.ipcon.enumerate()
def cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
# Initialize GPS
if device_identifier == BrickletGPSV2.DEVICE_IDENTIFIER:
self.gps = BrickletGPSV2(uid, self.ipcon)
self.gps.set_date_time_callback_period(TimeServer.GPS_UPDATE_PERIOD)
self.gps.set_coordinates_callback_period(TimeServer.GPS_UPDATE_PERIOD)
self.gps.register_callback(BrickletGPSV2.CALLBACK_DATE_TIME, self.cb_time_updated)
self.gps.register_callback(BrickletGPSV2.CALLBACK_COORDINATES, self.cb_location_updated)
# Initialize OLED display
if device_identifier == BrickletOLED128x64.DEVICE_IDENTIFIER:
self.oled = BrickletOLED128x64(uid, self.ipcon)
self.oled.clear_display()
# Initialize RTC
if device_identifier == BrickletRealTimeClock.DEVICE_IDENTIFIER:
self.rtc = BrickletRealTimeClock(uid, self.ipcon)
self.rtc.register_callback(BrickletRealTimeClock.CALLBACK_DATE_TIME, self.cb_rtc_time_update)
self.rtc.set_date_time_callback_period(TimeServer.RTC_UPDATE_PERIOD)
def cb_connected(self, connected_reason):
self.ipcon.enumerate()
def cb_time_updated(self, d, t):
fix, satelite_num = self.gps.get_status()
if fix:
year, d = d % 100, int(d/100)
month, d = d % 100, int(d/100)
day = d % 100
millisecond, t= t % 1000, int(t/1000)
second, t = t % 100, int(t/100)
minute, t = t % 100, int(t/100)
hour = t % 100
self.last_gps_time = datetime(2000+year, month, day, hour, minute, second, microsecond=millisecond*1000, tzinfo=from_zone)
self.update_rtc_time(self.last_gps_time)
if self.oled:
self.oled.write_line(3, 2, "GPS Time: %02d:%02d:%02d.%02d" % (self.last_gps_time.hour, self.last_gps_time.minute, self.last_gps_time.second, millisecond/10))
self.oled.write_line(4, 2, "GPS Date: %02d.%02d.%d" % (self.last_gps_time.day, self.last_gps_time.month, self.last_gps_time.year))
def cb_location_updated(self, latitude, ns, longitude, ew):
fix, satelite_num = self.gps.get_status()
if fix:
self.last_gps_position=GpsLocation(latitude, ns, longitude, ew)
if self.oled:
self.oled.write_line(6, 1, "Location: %.2f %s %.2f %s" % (self.last_gps_position.latitude, ns, self.last_gps_position.longitude, ew))
def update_rtc_time(self, dt):
if self.rtc:
self.rtc.set_date_time(dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond/10000, dt.weekday()+1)
def cb_rtc_time_update(self, year, month, day, hour, minute, second, centisecond, weekday, timestamp):
if self.oled:
self.oled.write_line(0, 2, "RTC Time: %02d:%02d:%02d.%02d" % (hour, minute, second, centisecond))
self.oled.write_line(1, 2, "RTC Date: %02d.%02d.%d" % (day, month, year))
def get_current_time(self):
if self.rtc:
year, month, day, hour, minute, second, centisecond, weekday = self.rtc.get_date_time()
dt = datetime(year, month, day, hour, minute, second, 0, tzinfo=from_zone)
timestamp = (calendar.timegm(dt.timetuple()) * 1000 )+(centisecond*10) # I'm not sure if this is the best way
return timestamp
else:
return 0
class HardwareTimeSource:
GPS_UPDATE_PERIOD = 5000
RTC_UPDATE_PERIOD = 1000
def __init__(self, host, port):
# Available devices that we use
self.gps = None
self.rtc = None
self.oled = None
self.time_handler=None
# GPS information
self.last_gps_time = None
self.last_gps_position = None
self.ipcon = IPConnection()
self.ipcon.register_callback(IPConnection.CALLBACK_ENUMERATE,
self._cb_enumerate)
self.ipcon.register_callback(IPConnection.CALLBACK_CONNECTED,
self._cb_connected)
self.ipcon.connect(host, int(port))
self.ipcon.enumerate()
def _cb_enumerate(self, uid, connected_uid, position, hardware_version,
firmware_version, device_identifier, enumeration_type):
if enumeration_type == IPConnection.ENUMERATION_TYPE_CONNECTED or \
enumeration_type == IPConnection.ENUMERATION_TYPE_AVAILABLE:
# Initialize GPS
if device_identifier == BrickletGPSV2.DEVICE_IDENTIFIER:
self.gps = BrickletGPSV2(uid, self.ipcon)
self.gps.set_date_time_callback_period(HardwareTimeSource.GPS_UPDATE_PERIOD)
self.gps.set_coordinates_callback_period(HardwareTimeSource.GPS_UPDATE_PERIOD)
self.gps.register_callback(BrickletGPSV2.CALLBACK_DATE_TIME, self._cb_time_updated)
self.gps.register_callback(BrickletGPSV2.CALLBACK_COORDINATES, self._cb_location_updated)
# Initialize OLED display
if device_identifier == BrickletOLED128x64.DEVICE_IDENTIFIER:
self.oled = BrickletOLED128x64(uid, self.ipcon)
self.oled.clear_display()
# Initialize RTC
if device_identifier == BrickletRealTimeClock.DEVICE_IDENTIFIER:
self.rtc = BrickletRealTimeClock(uid, self.ipcon)
self.rtc.register_callback(BrickletRealTimeClock.CALLBACK_DATE_TIME, self._cb_rtc_time_update)
self.rtc.set_date_time_callback_period(HardwareTimeSource.RTC_UPDATE_PERIOD)
if self.rtc and self.gps and self.ready_handler:
# We are ready to server time
self.ready_handler()
def _cb_connected(self, connected_reason):
self.ipcon.enumerate()
def _cb_time_updated(self, d, t):
fix, satelite_num = self.gps.get_status()
if fix:
year, d = d % 100, int(d/100)
month, d = d % 100, int(d/100)
day = d % 100
millisecond, t= t % 1000, int(t/1000)
second, t = t % 100, int(t/100)
minute, t = t % 100, int(t/100)
hour = t % 100
self.last_gps_time = datetime(2000+year, month, day, hour, minute, second, microsecond=millisecond*1000, tzinfo=utc_zone)
if self.time_handler:
self.time_handler(self.last_gps_time)
if self.oled:
self.oled.write_line(3, 2, "GPS Time: %02d:%02d:%02d.%02d" % (self.last_gps_time.hour, self.last_gps_time.minute, self.last_gps_time.second, millisecond/10))
self.oled.write_line(4, 2, "GPS Date: %02d.%02d.%d" % (self.last_gps_time.day, self.last_gps_time.month, self.last_gps_time.year))
def _cb_location_updated(self, latitude, ns, longitude, ew):
fix, satelite_num = self.gps.get_status()
if fix:
self.last_gps_position=GpsLocation(latitude, ns, longitude, ew)
if self.oled:
self.oled.write_line(6, 1, "Location: %.2f %s %.2f %s" % (self.last_gps_position.latitude, ns, self.last_gps_position.longitude, ew))
def _cb_rtc_time_update(self, year, month, day, hour, minute, second, centisecond, weekday, timestamp):
if self.oled:
self.oled.write_line(0, 2, "RTC Time: %02d:%02d:%02d.%02d" % (hour, minute, second, centisecond))
self.oled.write_line(1, 2, "RTC Date: %02d.%02d.%d" % (day, month, year))
def register_gps_time_handler(self, gps_time_handler):
self.time_handler=gps_time_handler
def register_bricklets_discovery_finished(self, ready_handler):
self.ready_handler=ready_handler
def get_rtc_time(self):
if self.rtc:
year, month, day, hour, minute, second, centisecond, weekday = self.rtc.get_date_time()
dt = datetime(year, month, day, hour, minute, second, centisecond*10000, tzinfo=utc_zone)
return dt
else:
raise Exception("RTC is not initialized!")
def update_rtc_time(self, dt):
if self.rtc:
# TODO: Check if dt has timezone set to UTC, throw exception otherwise
self.rtc.set_date_time(dt.year, dt.month, dt.day, dt.hour, dt.minute, dt.second, dt.microsecond/10000, dt.weekday()+1)
else:
raise Exception("RTC is not initialized!")
