40 lines
854 B
Python
40 lines
854 B
Python
#!/usr/bin/env python
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# -*- coding:utf-8 -*-
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import sys
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import dhtreader
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DHT11 = 11
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DHT22 = 22
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AM2302 = 22
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dhtreader.init()
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if len(sys.argv) != 3:
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print("usage: {0} [11|22|2302] GPIOpin#".format(sys.argv[0]))
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print("example: {0} 2302 Read from an AM2302 connected to GPIO #4".format(sys.argv[0]))
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sys.exit(2)
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dev_type = None
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if sys.argv[1] == "11":
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dev_type = DHT11
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elif sys.argv[1] == "22":
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dev_type = DHT22
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elif sys.argv[1] == "2302":
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dev_type = AM2302
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else:
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print("invalid type, only 11, 22 and 2302 are supported for now!")
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sys.exit(3)
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dhtpin = int(sys.argv[2])
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if dhtpin <= 0:
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print("invalid GPIO pin#")
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sys.exit(3)
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#print("using pin #{0}".format(dhtpin))
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t, h = dhtreader.read(dev_type, dhtpin)
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if t and h:
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print "%.3f; %.3f" % (t, h)
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else:
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print("Failed to read from sensor, maybe try again?")
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