def readTemperature(sensorId):
tfile = open("/sys/bus/w1/devices/" + sensorId + "/w1_slave")
#tfile = open("temp_demo.txt")
text = tfile.read()
tfile.close()
secondline = text.split("\n")[1]
temperaturedata = secondline.split(" ")[9]
temperature = float(temperaturedata[2:])
temperature = temperature / 1000
return temperature
sensorsToMonitor = getThermometerList()
publishIntervalMins = sensor_common.config.getint('intervals','temp_publish_mins')
start = sensor_common.getStart(publishIntervalMins)
sensor_common.waitUntil(start, True)
while True:
sensorReadings = []
#Create space in sensorsReadings for readings for each sensor
for sensorId in sensorsToMonitor:
sensorReadings.append([])
#For each minute between now and the final reading, take a reading
for x in range(publishIntervalMins):
start = start + datetime.timedelta(seconds=60)
sensor_common.waitUntil(start, True)
print("Reading @ " + str(datetime.datetime.now()))
for y in range(len(sensorsToMonitor)):
currentTemp = readTemperature(sensorsToMonitor[y])
sensorReadings[y].append(currentTemp)
SPIMOSI = 24
SPICS = 25
# set up the SPI interface pins
GPIO.setup(SPIMOSI, GPIO.OUT)
GPIO.setup(SPIMISO, GPIO.IN)
GPIO.setup(SPICLK, GPIO.OUT)
GPIO.setup(SPICS, GPIO.OUT)
sensorsToMonitor = []
for x in range(sensor_common.config.getint('adc_sensors', 'count')):
sensorsToMonitor.append(sensor_common.config.get('adc_sensors', str(x)))
#print sensorsToMonitor
readingIntervalMins = sensor_common.config.getint('intervals','soil_reading_mins')
start = sensor_common.getStart(readingIntervalMins)
sensor_common.waitUntil(start, True)
while True:
#Read and publish for each sensor
print("Publishing @ " + str(datetime.datetime.now()))
for i in range(len(sensorsToMonitor)):
sensorId = sensorsToMonitor[i]
sensorReading = readadc(i, SPICLK, SPIMOSI, SPIMISO, SPICS)
moisturePerc = 100.0 - ((sensorReading / 4096.0) * 100.0)
message = sensor_common.enqueueSensorMessage(moisturePerc, sensorId, start)
print("Publishing : " + str(message))
#Wait until next reading point
sys.stdout.flush()
start = start + datetime.timedelta(seconds=(readingIntervalMins * 60))
sensor_common.waitUntil(start, True)