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terrariumGPIOSensor.py
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# -*- coding: utf-8 -*-
import terrariumLogging
logger = terrariumLogging.logging.getLogger(__name__)
from time import time
import RPi.GPIO as GPIO
import Adafruit_DHT
from terrariumSensor import terrariumSensorSource
from terrariumUtils import terrariumUtils
from gevent import monkey, sleep
monkey.patch_all()
class terrariumGPIOSensor(terrariumSensorSource):
TYPE = None
VALID_SENSOR_TYPES = []
def __init__(self, sensor_id, sensor_type, address, name = '', callback_indicator = None):
super(terrariumGPIOSensor,self).__init__(sensor_id, sensor_type, address, name, callback_indicator)
gpio_pins = self.get_address().split(',')
logger.debug('Initializing sensor type \'%s\' with GPIO address %s'.format(self.get_type(),gpio_pins))
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[0]), GPIO.IN,pull_up_down=GPIO.PUD_UP)
def load_data(self):
data = None
if self.open():
data = self.load_raw_data()
self.close()
return data
def load_raw_data(self):
try:
gpio_pins = self.get_address().split(',')
data = GPIO.input(terrariumUtils.to_BCM_port_number(gpio_pins[0]))
logger.debug('Read state sensor type \'{}\' with GPIO address {} with current alarm: {}'.format(self.get_type(),gpio_pins[0],data))
except Exception as ex:
logger.warning('Error reading new data from {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))
return False
return data
def open(self):
try:
gpio_pins = self.get_address().split(',')
logger.debug('Open sensor type \'{}\' with address {}'.format(self.get_type(),gpio_pins))
if len(gpio_pins) > 1 and terrariumUtils.to_BCM_port_number(gpio_pins[-1]):
# Some kind of 'power management' with the last gpio pin number :) https://raspberrypi.stackexchange.com/questions/68123/preventing-corrosion-on-yl-69
logger.debug('Enabling power control management on sensor type \'{}\' with GPIO power pin {}'.format(self.get_type(),gpio_pins[-1]))
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[-1]), GPIO.OUT)
sleep(0.5)
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[0]), GPIO.IN)
except Exception as ex:
logger.warning('Error opening {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))
return False
return True
def close(self):
try:
gpio_pins = self.get_address().split(',')
logger.debug('Closing sensor type \'{}\' with address {}'.format(self.get_type(),gpio_pins))
GPIO.cleanup(terrariumUtils.to_BCM_port_number(gpio_pins[0]))
if len(gpio_pins) > 1 and terrariumUtils.to_BCM_port_number(gpio_pins[-1]):
logger.debug('Closeing power control pin of sensor type \'{}\' at GPIO power pin {}'.format(self.get_type(),gpio_pins[-1]))
GPIO.cleanup(terrariumUtils.to_BCM_port_number(gpio_pins[-1]))
except Exception as ex:
logger.warning('Error closing {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))
class terrariumYTXXSensorDigital(terrariumGPIOSensor):
TYPE = 'ytxx-digital'
VALID_SENSOR_TYPES = ['moisture']
def load_raw_data(self):
data = super(terrariumYTXXSensorDigital,self).load_raw_data()
return { self.get_sensor_type() : 0.0 if data == 1.0 else 100.0}
class terrariumDHTSensor(terrariumGPIOSensor):
TYPE = None
VALID_SENSOR_TYPES = ['temperature','humidity']
def load_raw_data(self):
data = None
try:
gpio_pins = self.get_address().split(',')
data = {}
sensor_device = Adafruit_DHT.DHT11
if terrariumDHT22Sensor.TYPE == self.get_type():
sensor_device = Adafruit_DHT.DHT22
elif terrariumAM2302Sensor.TYPE == self.get_type():
sensor_device = Adafruit_DHT.AM2302
data['humidity'], data['temperature'] = Adafruit_DHT.read_retry(sensor_device, terrariumUtils.to_BCM_port_number(gpio_pins[0]),5)
except Exception as ex:
logger.warning('Error getting new data from {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))
return data
class terrariumDHT11Sensor(terrariumDHTSensor):
TYPE = 'dht11'
hardwaretype = 'dht11'
class terrariumDHT22Sensor(terrariumDHTSensor):
TYPE = 'dht22'
hardwaretype = 'dht22'
class terrariumAM2302Sensor(terrariumDHTSensor):
TYPE = 'am2302'
hardwaretype = 'am2302'
class terrariumHCSR04Sensor(terrariumGPIOSensor):
TYPE = 'hc-sr04'
VALID_SENSOR_TYPES = ['distance']
def __init__(self, sensor_id, sensor_type, address, name = '', callback_indicator = None):
self.set_limit_max(1000)
super(terrariumHCSR04Sensor,self).__init__(sensor_id, sensor_type, address, name, callback_indicator)
def open(self):
try:
gpio_pins = self.get_address().split(',')
logger.debug('Open sensor type \'{}\' with address {}'.format(self.get_type(),gpio_pins))
if len(gpio_pins) > 2 and terrariumUtils.to_BCM_port_number(gpio_pins[-1]):
# Some kind of 'power management' with the last gpio pin number :) https://raspberrypi.stackexchange.com/questions/68123/preventing-corrosion-on-yl-69
logger.debug('Enabling power control management on sensor type \'{}\' with GPIO power pin {}'.format(self.get_type(),gpio_pins[-1]))
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[-1]), GPIO.OUT)
sleep(0.5)
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[0]), GPIO.OUT) # Trigger out
GPIO.setup(terrariumUtils.to_BCM_port_number(gpio_pins[1]), GPIO.IN) # Data in
except Exception as ex:
logger.warning('Error opening {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))
return False
return True
def load_raw_data(self):
data = None
try:
gpio_pins = self.get_address().split(',')
data = {}
GPIO.output(terrariumUtils.to_BCM_port_number(gpio_pins[0]), False)
sleep(2)
GPIO.output(terrariumUtils.to_BCM_port_number(gpio_pins[0]), True)
sleep(0.00001)
GPIO.output(terrariumUtils.to_BCM_port_number(gpio_pins[0]), False)
pulse_start = time()
while GPIO.input(terrariumUtils.to_BCM_port_number(gpio_pins[1])) == 0:
pulse_start = time()
pulse_end = time()
while GPIO.input(terrariumUtils.to_BCM_port_number(gpio_pins[1])) == 1:
pulse_end = time()
pulse_duration = pulse_end - pulse_start
# https://www.modmypi.com/blog/hc-sr04-ultrasonic-range-sensor-on-the-raspberry-pi
# Measure in centimetre
data = { self.get_sensor_type() : round(pulse_duration * 17150,5)}
except Exception as ex:
pass
return data
def close(self):
super(terrariumHCSR04Sensor,self).close()
try:
gpio_pins = self.get_address().split(',')
if len(gpio_pins) > 2 and terrariumUtils.to_BCM_port_number(gpio_pins[1]):
logger.debug('Closeing trigger control pin of sensor type \'{}\' at GPIO power pin {}'.format(self.get_type(),gpio_pins[1]))
GPIO.cleanup(terrariumUtils.to_BCM_port_number(gpio_pins[1]))
except Exception as ex:
logger.warning('Error closing {} sensor \'{}\'. Error message: {}'.format(self.get_type(),self.get_name(),ex))