61 lines
1.4 KiB
Python
61 lines
1.4 KiB
Python
#!/usr/bin/python
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import sys
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import Adafruit_DHT
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import os
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import glob
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import time
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# Parse command line parameters.
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sensor_args = {'11': Adafruit_DHT.DHT11, '22': Adafruit_DHT.DHT22, '2302': Adafruit_DHT.AM2302}
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if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
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sensor = sensor_args[sys.argv[1]]
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pin = sys.argv[2]
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isDHTSensor = True
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elif len(sys.argv) == 2 and sys.argv[1] == '1820':
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os.system('modprobe w1-gpio')
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os.system('modprobe w1-therm')
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base_dir = '/sys/bus/w1/devices/'
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device_folder = glob.glob(base_dir + '28*')[0]
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device_file = device_folder + '/w1_slave'
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isDHTSensor = False
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else:
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sys.exit(1)
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def read_temp_raw():
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f = open(device_file, 'r')
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lines = f.readlines()
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f.close()
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return lines
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def read_temp():
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lines = read_temp_raw()
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while lines[0].strip()[-3:] != 'YES':
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time.sleep(0.2)
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lines = read_temp_raw()
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equals_pos = lines[1].find('t=')
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if equals_pos != -1:
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temp_string = lines[1][equals_pos+2:]
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temp_c = float(temp_string) / 1000.0
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return temp_c
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def read_dht_temp():
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hum, temp = Adafruit_DHT.read_retry(sensor, pin)
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return temp
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if isDHTSensor = True:
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temperature = read_dht_temp()
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if temperature is not None:
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print '{0:0.1f}'.format(temperature)
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else:
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print 'Failed'
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sys.exit(1)
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else:
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temperature = read_temp()
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print '{0:0.1f}'.format(temperature)
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sys.exit(1)
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