Hi, guys after all this post, what is the final relase of this situation?
Now im using free privateeyepi http://www.projects.privateeyepi.com/home/home-alarm-system-project/temperature-and-humidity and it works perfect, no data lost.
It will be great if DHT22 works finally 100% with cayenne.
I put here the privateeyepi scripts, so someone can find it helpful:
1- STEP
cd /home
sudo git clone GitHub - adafruit/Adafruit_Python_DHT: Python library to read the DHT series of humidity and temperature sensors on a Raspberry Pi or Beaglebone Black.
cd Adafruit_Python_DHT
sudo apt-get install build-essential python-dev
sudo python setup.py install
2.STEP
it installs a lot of file, DHT releted file are: dht22.py / globals.py / restarter.py
cd /home
sudo wget -N www.privateeyepi.com/downloads/install.sh
i put here the code of the single file:
dht22.py
#!/usr/bin/env python
"""
DHT22.py 14.00 temperature and humidity to PrivateEyePi
---------------------------------------------------------------------------------
Works conjunction with host at www.privateeyepi.com
Visit projects.privateeyepi.com for full details
J. Evans February 2014
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.
Revision History
V1.00 - Created
V1.01 - Fixed bug with Fahrenheit displaying as "C" not "F"
V9 - Rules Release
v9.01 - Fixed bug with negative temperature readings
v13 - Added LCD Functionality
V14 - Added support for Raspberry Pi2
-----------------------------------------------------------------------------------
"""
import time
import RPi.GPIO as GPIO
import urllib2
import subprocess
import globals
from alarmfunctionsr import UpdateHost
from alarmfunctionsr import GetDataFromHost
from alarmfunctionsr import SendToLCD
import Adafruit_DHT
global LocationDesc
#...
def GetData():
global temp
global humidity
# This is the routine that interfaces with the sensor and
# return a value that will get sent to the host and displayed
# on the dashboard.
if globals.PrintToScreen: print "Reading DHT22 sensor on pin "+str(globals.dht22_pin_no)
#Thanks to Adafruit for the DHT22 sensor interface written in c
humidity, temp = Adafruit_DHT.read_retry(Adafruit_DHT.AM2302, globals.dht22_gpio)
if humidity is None or temp is None:
return(False)
humidity = round(humidity,2)
temp = round(temp,2)
if globals.PrintToScreen: print "Temperature = " + str(temp)
if globals.PrintToScreen: print "Humidity = " + str(humidity)
# Do the Farenheit conversion if required
if globals.Farenheit:
temp=temp*1.8+32
return(True)
def GetLocation(number):
global LocationDesc
LocationDesc= ""
RecordSet = GetDataFromHost(21,[0])
if RecordSet==False:
return 1
if globals.PrintToScreen: print RecordSet
numrf = len(RecordSet)
for i in range(numrf):
if RecordSet[i][0]==number:
LocationDesc=RecordSet[i][1]
if globals.PrintToScreen: print "Location Description = "+ str(LocationDesc)
return 0
def fileexists(filename):
try:
with open(filename): pass
except IOError:
return False
return True
def NotifyHost():
global temp
global humidity
global LocationDesc
TempBuffer = []
rt=GetData()
if rt==False: #fail
return (0)
TempBuffer.append(temp)
if globals.Farenheit:
TempBuffer.append(1)
else:
TempBuffer.append(0)
TempBuffer.append(globals.dht22_pin_no)
TempBuffer.append(humidity)
UpdateHost(14, TempBuffer)
if globals.LCDTemperature==True:
#SendToLcd receives an array of 7 values
#RecordSet[0] : GPIO_Pin_Number
#RecordSet[1] : Location
#RecordSet[2] : Display Message
#RecordSet[3] : type 1=Switch Open, 2=Switch Closed, 3=Temperature, 4=Temperature & Humidity, 5=Free format String
#RecordSet[4] : Tempeature Value
#RecordSet[5] : Humidity Value
#RecordSet[6] : Unit of measure, 0=Centigrade, 1=Fahrenheit
#RecordSet[7] : Armed/Disarmed 1=Armed, 2=Disarmed
#RecordSet[8] : Date/Time
SendToLCD([globals.dht22_pin_no,LocationDesc,0,4,temp,humidity, globals.Farenheit,0,0])
return (0)
def main():
global start_time
global elapsed_time
globals.init()
# Interval in seconds that temperature is sent to the server
start_time = time.time()
GetLocation(globals.dht22_pin_no)
NotifyHost()
#Main Loop
while True:
elapsed_time = time.time() - start_time
if (elapsed_time > 300):
start_time = time.time()
# Get the latest temperature
NotifyHost()
time.sleep(.2)
if __name__ == "__main__":
main()
globals.py
#!/usr/bin/env python
"""
globals.py 10.00 PrivateEyePi Globals Parameters
---------------------------------------------------------------------------------
Works conjunction with host at www.privateeyepi.com
Visit projects.privateeyepi.com for full details
J. Evans October 2013
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.
Revision History
V1.00 - Release
V2.00 - Added generic poll interval
V3.00 - Incorporated rules functionality
V4.00 - Added siren rule action, chime, siren beep delay
v9.00 - Rules release
v10.00 - Added support for flexible sensor voltages
-----------------------------------------------------------------------------------
"""
def init():
global PrintToScreen
global user
global password
global RFPollInterval
global smtp_server
global smtp_user
global smtp_pass
global Farenheit
global DallasSensorNumbers
global DallasSensorDirectory
global TemperaturePollInterval
global GenericPollInterval
global GPIOPollInterval
global UseSiren
global SirenGPIOPin
global SirenTimeout
global SirenStartTime
global Armed
global RemoteZoneDescription
global ArmPin
global DisarmPin
global ArmDisarm
global GPIO
global ChimeDuration
global SirenPollInterval
global SirenDelay
global BeepDuringDelay
global ButtonBList
global ButtonBId
global dht22_gpio
global dht22_pin_no
global auto_dht22
global auto_alarm
global auto_rfsensor
global auto_dallas
global auto_lcd
global auto_control
global install_directory
global email_type
global ChimeGPIOPin
global photopath
global RelayPin
global WRelayPin
global VoltageList
global MaxVoltage
global LCDName
global LCDTemperature
global LCDAlarmActivity
global lcd_ip
global LCDChime
global disp
#User and password that has been registered on www.privateeyepi.com website
user="" #Enter your email address
password="" #Enter your password here
# Set this to True if you want to send outputs to the screen
# This is useful for debugging
PrintToScreen=False
# If you want to receive email alerts define SMTP email server details
# This is the SMTP server, username and password trequired to send email through your internet service provider
smtp_server="" # usually something like smtp.yourisp.com
smtp_user="" # usually the main email address of the account holder
smtp_pass="" # usually your email address password
email_type=1 # 1 for No Encryption,
# 2 for SSL and
# 3 and TLS
# Set the path to the photos that get attached to emails when
# a rule is triggered to send photos
photopath = "/home"
#Indicator to record temperature in Farenheit
Farenheit=False
#Temperature settings
#if you are using the dht22 temperature and humidity sensor set the gpio number and the pin number here
# note!! the GPIO number and the pin number are not the same e.g GPIO4=RPIPin7
dht22_gpio=4
dht22_pin_no=7
DallasSensorNumbers = []
DallasSensorDirectory = []
#Set the directory and sensor numbers for the Dallas temperature gauge
DallasSensorNumbers.append(7) #sensor number defined in the number field in the GPIO settings
#DallasSensorNumbers.append(80) #add more sensors..
#DallasSensorNumbers.append() #add more sensors..
DallasSensorDirectory.append("28-0000055d57dd") #directory name on RPI in the /sys/bus/w1/devices directory
#DallasSensorDirectory.append("28-000005020815") #add another directory
#DallasSensorDirectory.append("") #add another directory
#Auto restart settings
auto_dallas = False
auto_alarm = False
auto_dht22 = False
auto_rfsensor = False
auto_lcd = False
auto_control = False
install_directory = "/home" #The PrivateEyePi software directory
# Set this to true if you want to connect an external siren. Put siren activation and deactivation code in the Siren function.
UseSiren = False
SirenGPIOPin = 18
SirenDelay=30 #The amount of time the siren will delay before it sounds
BeepDuringDelay = True #if your want the siren to beep during the SirenDelay period
SirenTimeout = 30 #siren will timeout after 30 seconds
ChimeGPIOPin = 18
ChimeDuration = 5
#Arm/Disarm zone from a switch
ArmDisarm=False # set this to True if you want to arm/disarm using switches
RemoteZoneDescription="" #The description of the zone you want to arm/disarm
ArmPin=13
DisarmPin=15
Armed = True
#Configure your button B sensors here
#Button B is the second button on the RF Switch
ButtonBList = []
ButtonBId = []
#ButtonBList.append(80) # this is the device ID of the sensor
#ButtonBId.append(90) # sensor number defined in the number field in the GPIO settings
#ButtonBList.append(81)
#ButtonBId.append(90)
#...add more button B sensors by copying the above two lines and updating the numbers in brackets....
#Relay pin configuration for the relay ON/OFF rule action
RelayPin=12
#WRelayPin=99
#Configure alternate voltages here. This is for wireless sensors that have a voltage
#that is not the standard 3V. This voltage setting is used for the battery display
#on the dashboard so the system knows what the maximum voltage is for the display
#The below example will set the maximum voltage for Device ID 81 to 9V
VoltageList = []
MaxVoltage = []
#VoltageList.append(92)
#MaxVoltage.append(1.5)
#VoltageList.append(81)
#MaxVoltage.append(9)
#...add more max voltages by copying the above two lines and updating the numbers in brackets....
#Configure an LCD panel here
LCDTemperature=False
LCDAlarmActivity=False
LCDChime=False
lcd_ip="127.0.0.1"
restarter.py
#!/usr/bin/env python
"""
Check to see if an process is running. If not, restart.
Run this in a cron job
"""
import os
import globals
globals.init()
process_name= "alarm.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_alarm:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
process_name= "dallas.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_dallas:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
process_name= "rfsensor.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_rfsensor:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
process_name= "dht22.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_dht22:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
process_name= "subscribe.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_lcd:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
process_name= "control.py" # change this to the name of your process
tmp2 = os.popen("ps -Af").read()
if process_name not in tmp2[:] and globals.auto_control:
newprocess="nohup python %s/%s &" % (globals.install_directory, process_name)
os.system(newprocess)
