81 lines
2.4 KiB
Python
81 lines
2.4 KiB
Python
#!/usr/bin/python
|
|
# Copyright (c) 2014 Adafruit Industries
|
|
# Author: Tony DiCola
|
|
# Modified by Vitor Henrique
|
|
|
|
# Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
# of this software and associated documentation files (the "Software"), to deal
|
|
# in the Software without restriction, including without limitation the rights
|
|
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
# copies of the Software, and to permit persons to whom the Software is
|
|
# furnished to do so, subject to the following conditions:
|
|
|
|
# The above copyright notice and this permission notice shall be included in all
|
|
# copies or substantial portions of the Software.
|
|
|
|
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
# SOFTWARE.
|
|
import sys
|
|
import Adafruit_DHT
|
|
import os
|
|
import glob
|
|
import time
|
|
|
|
|
|
# Parse command line parameters.
|
|
sensor_args = { '11': Adafruit_DHT.DHT11,
|
|
'22': Adafruit_DHT.DHT22,
|
|
'2302': Adafruit_DHT.AM2302 }
|
|
|
|
if len(sys.argv) == 3 and sys.argv[1] in sensor_args:
|
|
sensor = sensor_args[sys.argv[1]]
|
|
pin = sys.argv[2]
|
|
isDHTSensor = True
|
|
elif len(sys.argv) == 2 and sys.argv[1] == '1820'
|
|
os.system('modprobe w1-gpio')
|
|
os.system('modprobe w1-therm')
|
|
base_dir = '/sys/bus/w1/devices/'
|
|
device_folder = glob.glob(base_dir + '28*')[0]
|
|
device_file = device_folder + '/w1_slave'
|
|
isDHTSensor = False
|
|
else:
|
|
sys.exit(1)
|
|
|
|
def read_temp_raw():
|
|
f = open(device_file, 'r')
|
|
lines = f.readlines()
|
|
f.close()
|
|
return lines
|
|
|
|
def read_temp():
|
|
lines = read_temp_raw()
|
|
while lines[0].strip()[-3:] != 'YES':
|
|
time.sleep(0.2)
|
|
lines = read_temp_raw()
|
|
equals_pos = lines[1].find('t=')
|
|
if equals_pos != -1:
|
|
temp_string = lines[1][equals_pos+2:]
|
|
temp_c = float(temp_string) / 1000.0
|
|
return temp_c
|
|
|
|
def read_dht_temp():
|
|
hum, temp = Adafruit_DHT.read_retry(sensor, pin)
|
|
return temp
|
|
|
|
if isDHTSensor = True:
|
|
temperature = read_dht_temp()
|
|
if temperature is not None:
|
|
print '{0:0.1f}'.format(temperature)
|
|
else:
|
|
print 'Failed'
|
|
sys.exit(1)
|
|
else
|
|
temperature = read_temp()
|
|
print '{0:0.1f}'.format(temperature)
|
|
sys.exit(1)
|