class DataLogger(object):
def __init__(self):
GPIO.setmode(GPIO.BOARD)
GPIO.setup(LED_PIN, GPIO.OUT)
self.bmp_sensor = BMP085.BMP085(mode=BMP085.BMP085_ULTRAHIGHRES)
self.receiver = DavisReceiver()
self.receiver.set_handler(self.process_message)
def loop(self):
self.receiver.calibration()
self.receiver.receive_begin()
# main loop
while True:
ts = int(time.time())
self.sleep(ts + LOOP_TIME - ts % LOOP_TIME)
temperature = self.bmp_sensor.read_temperature()
pressure = 0.0;
for _ in range(PRESSURE_COUNT):
pressure += self.bmp_sensor.read_pressure()
pressure /= PRESSURE_COUNT
height = HEIGHT
sea_level_pressure = math.pow(math.pow(pressure/100.0, 0.1902614) + 8.417168e-05 * height, 5.255927)
lost_messages = self.receiver.lost_messages
valid_messages = self.receiver.valid_messages
self.receiver.valid_messages = 0
self.receiver.lost_messages = 0
message = "A " + str(int(round(temperature * 10, 0)))
message += " " + str(int(round(pressure, 0)))
message += " " + str(int(round(height * 100, 0)))
message += " " + str(int(round(sea_level_pressure * 100, 0)))
message += " " + str(valid_messages)
message += " " + str(lost_messages)
logging.info(message + " " + description(message))
def sleep(self, target):
while True:
ts = int(time.time())
if ts < target:
time.sleep(target - ts)
else:
break
def shutdown(self):
if self.receiver:
self.receiver.shutdown()
GPIO.cleanup()
def process_message(self, message):
if not check(message):
logging.info("invalid message received: " + message + " " + description(message))
return False
GPIO.output(LED_PIN, True)
logging.info(message + " " + description(message))
time.sleep(0.1)
GPIO.output(LED_PIN, False)
return True
class DataLogger(object):
def __init__(self):
GPIO.setmode(GPIO.BOARD)
GPIO.setup(LED_PIN, GPIO.OUT)
self.con = mdb.connect('localhost', 'davis', 'davis', 'davis', charset='latin1');
self.cur = self.con.cursor()
self.bmp_sensor = BMP085.BMP085(mode=BMP085.BMP085_ULTRAHIGHRES)
self.receiver = DavisReceiver()
self.receiver.set_handler(self.process_message)
self.lock = threading.Lock()
def loop(self):
self.receiver.calibration()
self.receiver.receive_begin()
# main loop
while True:
ts = int(time.time())
self.sleep(ts + LOOP_TIME - ts % LOOP_TIME)
temperature = self.bmp_sensor.read_temperature()
pressure = 0.0;
for _ in range(PRESSURE_COUNT):
pressure += self.bmp_sensor.read_pressure()
pressure /= PRESSURE_COUNT
height = HEIGHT
sea_level_pressure = math.pow(math.pow(pressure/100.0, 0.1902614) + 8.417168e-05 * height, 5.255927)
lost_messages = self.receiver.lost_messages
valid_messages = self.receiver.valid_messages
self.receiver.valid_messages = 0
self.receiver.lost_messages = 0
message = "A " + str(int(round(temperature * 10, 0)))
message += " " + str(int(round(pressure, 0)))
message += " " + str(int(round(height * 100, 0)))
message += " " + str(int(round(sea_level_pressure * 100, 0)))
message += " " + str(valid_messages)
message += " " + str(lost_messages)
logging.debug(message + " " + description(message))
self.store_message(message, True)
def sleep(self, target):
while True:
ts = int(time.time())
if ts < target:
time.sleep(target - ts)
else:
break
def shutdown(self):
if self.con:
self.con.commit()
self.con.close()
if self.receiver:
self.receiver.shutdown()
def process_message(self, message):
if not check(message):
logging.warn("invalid message received: " + message + " " + description(message))
return False
GPIO.output(LED_PIN, True)
logging.debug(message + " " + description(message))
self.store_message(message, False)
time.sleep(0.1)
GPIO.output(LED_PIN, False)
return True
def store_message(self, message, commit):
with self.lock:
ts = int(time.time()*1000)
self.cur.execute("INSERT INTO sensor(dateTime,sensor,data,description) VALUES(%s,%s,%s,%s)", (ts,sensor(message),message,description(message)))
if commit:
self.con.commit()