async def main():
parser = argparse.ArgumentParser(
description=
"Data collector which sends sensor measurements to Azure IoT HUB")
parser.add_argument("--nolcd",
action='store_true',
help="Skip LCD printout")
args = parser.parse_args()
if args.nolcd:
print("No LCD")
try:
bme280 = BME280()
led = Led()
lcd = None
if not args.nolcd:
lcd = LCD()
(chip_id, chip_version) = bme280.readID()
print(f"Started, chip_id={chip_id}, chip_version={chip_version}")
conn_str = os.getenv("DEV_BME_CONN_STR")
device_client = IoTHubDeviceClient.create_from_connection_string(
conn_str)
await device_client.connect()
while True:
temperature, pressure, humidity = bme280.readAll()
measTime = datetime.now().isoformat()
measRow = f'{{"Temperature":{temperature:0.2f},"Pressure":{pressure:0.2f},"Humidity":{humidity:0.2f}}}'
print(f"Sending message: {measRow}")
await device_client.send_message(measRow)
if not args.nolcd:
lcdOut = f"T:{temperature:0.1f}C {pressure:0.1f}hPa\nH:{humidity:0.1f}%"
lcd.clear()
lcd.setCursor(0, 0)
lcd.message(lcdOut)
led.blinkLed()
sleep(2 * 60)
except KeyboardInterrupt:
print("exiting...")
await device_client.disconnect()
led.close()
if not args.nolcd:
lcd.clear()
lcd.setCursor(0, 0)
lcd.destroy()
class RunLoop:
SLEEP_MS_DEFAULT = 20
LED_TOGGLE_DEFAULT = 500
def __init__(self, config, verbose=0):
self.verbose = verbose
# ------------------------------------------------------------------------------------------------------------ #
self.exit = False
self.config = config
# ------------------------------------------------------------------------------------------------------------ #
self.sleep_ms = self.SLEEP_MS_DEFAULT
# ------------------------------------------------------------------------------------------------------------ #
# Initialise required services
# ------------------------------------------------------------------------------------------------------------ #
if self.config['pinout']['led'] is None:
from led import MockLed
self.led = MockLed()
else:
from led import Led
self.led = Led(self.config['pinout']['led']['pin'],
self.config['pinout']['led']['on_level'])
# ------------------------------------------------------------------------------------------------------------ #
if self.config['pinout']['button'] is None:
from button import MockButton
self.button = MockButton()
else:
from button import Button
self.button = Button(self.config['pinout']['button']['pin'],
self.config['pinout']['button']['on_level'])
# ------------------------------------------------------------------------------------------------------------ #
if self.config['pinout']['relay'] is None:
from relay import MockRelay
self.relay = MockRelay()
else:
from relay import Relay
self.relay = Relay(self.config['pinout']['relay']['pin'],
self.config['pinout']['relay']['on_level'])
# ------------------------------------------------------------------------------------------------------------ #
self.wifi = WiFi(self.config) # , verbose=self.verbose)
self.device_id = self.wifi.device_id()
self.messaging = Messaging(self.config, self.device_id)
# ------------------------------------------------------------------------------------------------------------ #
# Application ready feedback --------------------------------------------------------------------------------- #
self.led.on(poll=True)
sleep(2)
self.led.off(poll=True)
# ------------------------------------------------------------------------------------------------------------ #
if self.wifi.connected():
self.on_wifi_connected(be_verbose=False)
# ------------------------------------------------------------------------------------------------------------ #
if self.verbose:
print('<{} with id {}>'.format(self.config['device']['type'],
self.device_id))
print(self.led)
print(self.button)
print(self.relay)
print(self.wifi)
print(self.messaging)
def on_wifi_connected(self, be_verbose=True):
if be_verbose and self.verbose:
print(self.wifi)
self.led.toggle(self.LED_TOGGLE_DEFAULT)
if not self.messaging.connected():
self.messaging.connect()
def run(self):
if self.verbose:
print('Run loop ' 'started')
while not self.exit:
# ======================================================================================================== #
self.led.poll()
self.button.poll()
# -------------------------------------------------------------------------------------------------------- #
if self.relay.state(
) == self.relay.STATE_OFF and self.button.pressed(
) == self.button.SHORT_PRESS:
if self.verbose:
print('<Button: SHORT_PRESS ' '0' '>')
self.messaging.publish({
'state':
'<Button: SHORT_PRESS '
'relay state: '
'on'
'>'
})
self.relay.on()
self.button.clear()
elif self.relay.state(
) == self.relay.STATE_ON and self.button.pressed(
) > self.button.NOT_PRESSED:
if self.verbose:
print('<Button: SHORT_PRESS ' '1' '>')
self.messaging.publish({
'state':
'<Button: SHORT_PRESS '
'relay state: '
'off'
'>'
})
self.relay.off()
self.button.clear()
elif self.led.enabled() is True and self.button.pressed(
) == self.button.LONG_PRESS:
if self.verbose:
print('<Button: LONG_PRESS ' '0' '>')
self.messaging.publish({
'state':
'<Button: LONG_PRESS '
'led enabled: '
'off'
'>'
})
self.led.enable(False)
self.led.off()
self.button.clear()
elif self.led.enabled() is False and self.button.pressed(
) > self.button.NOT_PRESSED:
if self.verbose:
print('<Button: LONG_PRESS ' '2' '>')
self.messaging.publish(
{'state': '<Button: LONG_PRESS '
'led enabled: '
'on'
'>'})
self.led.enable(True)
self.led.toggle(self.LED_TOGGLE_DEFAULT)
self.button.clear()
# -------------------------------------------------------------------------------------------------------- #
if self.wifi.connected():
if self.messaging.connected() is False:
self.on_wifi_connected()
if self.messaging.poll():
if 'action' in self.messaging.msg:
if self.messaging.msg['action'] == 'on':
if self.verbose:
print('<Relay: ' 'on' '>')
self.relay.on()
elif self.messaging.msg['action'] == 'off':
if self.verbose:
print('<Relay: ' 'off' '>')
self.relay.off()
elif self.messaging.msg['action'] == 'exit':
if self.verbose:
print('<Application: ' 'exit' '>')
self.exit = True
self.messaging.completed()
elif self.wifi.connected() is False:
if self.wifi.connecting() is False:
self.led.toggle(250)
self.led.on(poll=True, save_state=True)
if self.wifi.connect() is True:
self.led.off(poll=True, restore_state=True)
# ======================================================================================================== #
sleep_ms(self.sleep_ms) # Reduce the tightness of the run loop
# ======================================================================================================== #
if self.verbose:
print('Run loop ' 'exited')
def close(self):
self.exit = True
if self.led:
self.led.close()
if self.button:
self.button.close()
if self.relay:
self.relay.close()
if self.messaging:
self.messaging.disconnect()
# if self.wifi:
# self.wifi.disconnect() # Don't do this, you will loose connection to the REPL
if self.verbose:
print('Run loop ' 'closed')
