temp_sensorwith web page.py
import RPi.GPIO as GPIO
import time
import json, requests
import datetime
channel =2 #GPIO2
data = []
j = 0
GPIO.setmode(GPIO.BCM)
time.sleep(1)
GPIO.setup(channel, GPIO.OUT)
GPIO.output(channel, GPIO.LOW)
time.sleep(0.02)
GPIO.output(channel, GPIO.HIGH)
GPIO.setup(channel, GPIO.IN)
while GPIO.input(channel) == GPIO.LOW:
continue
while GPIO.input(channel) == GPIO.HIGH:
continue
while j < 40:
k = 0
while GPIO.input(channel) == GPIO.LOW:
continue
while GPIO.input(channel) == GPIO.HIGH:
k+=1
if k > 100:
break
if k < 8:
data.append(0)
else:
data.append(1)
j += 1
print ("sensor is working.")
#print data
humidity_bit = data[0:8]
humidity_point_bit = data[8:16]
temperature_bit = data[16:24]
temperature_point_bit = data[24:32]
check_bit = data[32:40]
humidity = 0
humidity_point = 0
temperature = 0
temperature_point = 0
check = 0
for i in range(8):
humidity += humidity_bit[i] * 2 ** (7-i)
humidity_point += humidity_point_bit[i] * 2 ** (7-i)
temperature += temperature_bit[i] * 2 ** (7-i)
temperature_point += temperature_point_bit[i] * 2 ** (7-i)
check += check_bit[i] * 2 ** (7-i)
tmp = humidity + humidity_point + temperature + temperature_point
if check == tmp:
print ("temperature :", temperature, "*C, humidity :", humidity, "%")
res='{value:%f}'% temperature
with open('/home/pi/Desktop/data.txt', 'a') as outfile:
json.dump(res, outfile)
outest=open('/home/pi/Desktop/data.txt','a')
outest.write(res)
outest.close
#print(res)
else:
print ("wrong")
#print "temperature :", temperature, "*C, humidity :", humidity, "% check :", check, ", tmp :", tmp
# Post Data to webpage
rqs_headers={'Content-Type': 'application/json'}
requrl ='http://192.168.1.3:8000/temperature_api/'
new_data = {
"captime": datetime.datetime.now(),
"captemperature": temperature
}
class ComplexEncoder(json.JSONEncoder):
def default(self, obj):
if isinstance(obj, datetime.datetime):
return obj.strftime('%Y-%m-%d %H:%M:%S')
elif isinstance(obj, datetime.date):
return obj.strftime('%Y-%m-%d')
else:
return json.JSONEncoder.default(self, obj)
test_data = json.dumps(new_data, cls=ComplexEncoder)
response = requests.post(url=requrl, headers=rqs_headers, data=test_data)
GPIO.cleanup()
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