利用樹霉派採集溫濕度上傳到OneNET(非完整，僅參考)

看圖：

Python代碼：

  1 #env /usr/bin/python3
  2 #author Bruce
  3 
  4 import RPi.GPIO as GPIO
  5 import time
  6 import json
  7 import datetime
  8 import requests
  9 
 10 APIKEY = '=xxxxxxxxxxxxxxxxxxxx='
 11 apiurl = 'http://api.heclouds.com/devices/11111111/datapoints'
 12 apiheaders = {'api-key': APIKEY, 'Content-Length': '120'}
 13 
 14 def getTemp():
 15     channel = 17
 16     data = []
 17     j = 0
 18 
 19     GPIO.setmode(GPIO.BCM)
 20 
 21     time.sleep(1)
 22 
 23     GPIO.setup(channel, GPIO.OUT)
 24 
 25     GPIO.output(channel, GPIO.LOW)
 26     time.sleep(0.02)
 27     GPIO.output(channel, GPIO.HIGH)
 28 
 29     GPIO.setup(channel, GPIO.IN)
 30 
 31     while GPIO.input(channel) == GPIO.LOW:
 32         continue
 33 
 34     while GPIO.input(channel) == GPIO.HIGH:
 35         continue
 36 
 37     while j < 40:
 38         k = 0
 39         while GPIO.input(channel) == GPIO.LOW:
 40             continue
 41     
 42         while GPIO.input(channel) == GPIO.HIGH:
 43             k += 1
 44             if k > 100:
 45                 break
 46     
 47         if k < 8:
 48             data.append(0)
 49         else:
 50             data.append(1)
 51 
 52         j += 1
 53 
 54     print("sensor is working.")
 55     print(data)
 56 
 57     humidity_bit = data[0:8]
 58     humidity_point_bit = data[8:16]
 59     temperature_bit = data[16:24]
 60     temperature_point_bit = data[24:32]
 61     check_bit = data[32:40]
 62 
 63     humidity = 0
 64     humidity_point = 0
 65     temperature = 0
 66     temperature_point = 0
 67     check = 0
 68 
 69     for i in range(8):
 70         humidity += humidity_bit[i] * 2 ** (7 - i)
 71         humidity_point += humidity_point_bit[i] * 2 ** (7 - i)
 72         temperature += temperature_bit[i] * 2 ** (7 - i)
 73         temperature_point += temperature_point_bit[i] * 2 ** (7 - i)
 74         check += check_bit[i] * 2 ** (7 - i)
 75 
 76     tmp = humidity + humidity_point + temperature + temperature_point
 77 
 78     tmp_output = open('/home/pi/Desktop/Projects/DHT11/log.txt', 'a+')
 79     csv=open('/home/pi/Desktop/Projects/DHT11/log.csv', 'a+')
 80 
 81     if check == tmp:
 82         print("temperature : ", temperature, ", humidity : " , humidity)
 83     
 84         tmp_output.write(',\n{"Time":' + time.strftime("%Y/%m/%d %H:%M:%S",time.localtime()) + ",")
 85         tmp_output.write('"temperate":')
 86         tmp_output.write(str(temperature))
 87         tmp_output.write(',')
 88         tmp_output.write('"Humidity":' + str(humidity))
 89         tmp_output.write('}')
 90         
 91         csv.write(time.strftime("%Y/%m/%d %H:%M:%S",time.localtime()) + ",")
 92         csv.write(str(temperature))
 93         csv.write(',')
 94         csv.write(str(humidity))
 95         csv.write('\n')
 96     else:
 97         print("wrong")
 98         print("temperature : ", temperature, ", humidity : " , humidity, " check : ", check, " tmp : ", tmp)
 99 
100     tmp_output.close()
101     csv.close()
102 
103     CurTime = datetime.datetime.now()
104     payload = {'datastreams':[{"id":"DHT11a","datapoints":[{"at":CurTime.isoformat(),"value":temperature}]}]}
105     print("Current time: %s" % CurTime.isoformat())
106     print("Upload value: %.3f" % temperature)
107 
108     jdata = json.dumps(payload)
109 
110     r=requests.post(apiurl,headers=apiheaders,data=json.dumps(payload))
111 
112     return r
113 
114 if __name__ == "__main__":
115     try:
116         while 1:
117             resp = getTemp()
118             print("OneNET request result: \n %s" %resp)
119             time.sleep(55)
120     finally:
121         GPIO.cleanup()