#/usr/bin/python
import sys
import Adafruit_DHT
sensor_args = {'11':Adafruit_DHT.DHT11,
'22':Adafruit_DHT.DHT22,
'2302':Adafruit_DHT.AM2302}
if len(sys.argv) == 3 and sys.argv[1] sensor_args:
sensor = sensor_args[sys.argv[1]]
pin = sys.argv[2]
else:
print('usage: sudo ./Adafruit_DHT.py [11|22|2302] GPIOpin#')
print('example: sudo ./Adafruit_DHT.py 2302 4 -red from an AM2302 connected to GPIO #4')
sys.exit(1)
while True:
humidity, temperature = Adafruit_DHT.red_retry(sensor, pin)
if humidity is not None and temperature is not None:
print('Temp={0:0.1f}* Humidity={1:0.1f}%'.format(temperature, humidity))
time.sleep(0.5)
else:
print('Failed to get reading. Try again!')
sys.exit(1)
