def moisture_reading(channel):
i = 0
data = []
while i < 100:
value = mcp.read_adc_difference(channel)
log_util.log_debug(__name__, "Moisture mesure {}: {}".format(i, value))
if value != 0:
measure = (value / 1023) * 100
data.append(measure)
i += 1
return round(100 - (sum(data) / len(data)), 2)
def readings_subscribe_action(client, userdata, message):
log_util.log_info(__name__,
'Received a message: {}'.format(message.payload))
byte_payload = message.payload.decode('utf8').replace("'", '"')
data = json.loads(byte_payload)
if automatic:
log_util.log_debug(__name__,
"Automatic is on, checking the moisture level...")
if sensors.moisture_level(data['Items']):
data = {"action": "ON", "requester": "AUTOMATIC"}
water.watering_invocation(data)
else:
log_util.log_info(
__name__,
'The soil is too wet, the moisture level is {}'.format(
data['Items']['moisture1']))
def light_reading(channel):
log_util.log_debug(__name__, "Light sensor")
i = 0
data = []
while i < 10:
measure = 0.0 # Output on the pin for
GPIO.setmode(GPIO.BOARD)
GPIO.setup(channel, GPIO.OUT)
GPIO.output(channel, GPIO.LOW)
sleep(0.1) # Change the pin back to input
GPIO.setup(channel, GPIO.IN) # Count until the pin goes high
while GPIO.input(channel) == GPIO.LOW:
measure += 1
if measure != 0:
data.append(measure)
i += 1
return round((sum(data) / len(data)), 2)
def status_subscribe_action(client, userdata, message):
global automatic
log_util.log_info(__name__,
'Received a message: {}'.format(message.payload))
byte_payload = message.payload.decode('utf8').replace("'", '"')
data = json.loads(byte_payload)
status = data['status']
if status == 'A':
log_util.log_debug(__name__, "Turned ON automatic")
automatic = True
elif status == 'M':
automatic = False
log_util.log_debug(__name__, "Turned OFF automatic")
elif status == 'F':
watering = {"action": "OFF", "requester": "MANUAL"}
log_util.log_debug(__name__, "Turned OFF Manual")
water.watering_invocation(watering)
elif status == 'O':
watering = {"action": "ON", "requester": "MANUAL"}
log_util.log_debug(__name__, "Turned ON Manual")
water.watering_invocation(watering)
def air_sensor_reading(channel):
log_util.log_debug(__name__, "Air sensor")
i = 0
data_humidity = []
data_temperature = []
while i < 1:
humidity_unvalidated, temperature_unvalidated = Adafruit_DHT.read_retry(DHT_SENSOR, channel)
log_util.log_debug(__name__, humidity_unvalidated)
log_util.log_debug(__name__, temperature_unvalidated)
if humidity_unvalidated and temperature_unvalidated:
data_humidity.append(humidity_unvalidated)
data_temperature.append(temperature_unvalidated)
i += 1
return round((sum(data_humidity) / len(data_humidity)), 2), round((sum(data_temperature) / len(data_temperature)),
2)
my_rpi = AWSIoTMQTTClient("Raspberry_Listener")
my_rpi.configureEndpoint(host, 8883)
my_rpi.configureCredentials(rootCAPath, privateKeyPath, certificatePath)
my_rpi.configureOfflinePublishQueueing(-1) # Infinite offline Publish queueing
my_rpi.configureDrainingFrequency(2) # Draining: 2 Hz
my_rpi.configureConnectDisconnectTimeout(10) # 10 sec
my_rpi.configureMQTTOperationTimeout(5) # 5 sec
# Connect and subscribe to AWS IoT
my_rpi.connect()
my_rpi.subscribe('smartgarden/status', 1, status_subscribe_action)
my_rpi.subscribe('smartgarden/watering', 1, watering_subscribe_action)
my_rpi.subscribe('smartgarden/readings', 1, readings_subscribe_action)
my_rpi.subscribe('smartgarden/maxdata', 1, max_data_update_action)
if len(repository_dynamo.get_status()) > 0 and repository_dynamo.get_status(
)[0]['status'] == 'A':
log_util.log_debug(__name__, "First status of the system is Automatic")
automatic = True
# Publish to the same topic in a loop forever
while True:
try:
pass
except KeyboardInterrupt as e:
log_util.log_error(
__name__, "User request to stop the system: {}".format(str(e)))
break