class CO2_stat(object):
"""Code associated with the thermostat controller"""
def __init__(self):
self.logger = Logger("CO2_stat")
self.logger.debug("initialize CO2 controller object")
self._co2 = SCD30(self.logger)
self._fan = Fan(self.logger)
def check(self, co2=None, test=False):
"""Adjust the fan depending upon the CO2
Args:
temp: optional test CO2
Returns:
None
Raises:
None
"""
target_co2 = TARGET_CO2
if co2 == None:
co2, temp, rh = self._co2.get_data()
msg = "{} {} {} {}".format("CO2:", co2, " Target CO2:", target_co2)
# Get target temperature from file
self.logger.info(msg)
if co2 > target_co2:
self._fan.set(Fan.ON)
else:
self._fan.set(Fan.OFF)
class EC(object):
GAIN = 1
def __init__(self, logger=None):
self._pin = 0 # ADS1115 Channel to use
self._logger = logger
if logger == None:
self._logger = Logger("EC", Logger.INFO)
# Create an ADS1115 ADC (16-bit) instance.
self._adc = ADS1115(logger)
def getEC(self):
"""Read the sensor value
Args:
None
Returns:
EC value as number between 0 and 32,000
Raises:
None
"""
ec = self._adc.read_adc(self._pin, gain=self.GAIN)
self._logger.info("{} {} {}: {}".format("EC pin", self._pin, "value",
ec))
return ec
class Humidistat(object):
"""Code associated with the thermostat controller"""
def __init__(self):
self._logger = Logger("Humidistat")
self._logger.setLevel(Logger.INFO)
self._logger.debug("initialize Humidistat object")
self._co2 = SCD30()
self._humidifier = Humidifier()
self._target_rh = 80
def check(self, rh=None, test=False):
"""Adjust the fhumidifier depending upon the rh
Args:
temp: optional test rh
Returns:
None
Raises:
None
"""
if rh == None:
co2, temp, rh = self._co2.get_data()
msg = "{} {} {} {}".format("Humidity:", rh, " Target Humidity:",
self._target_rh)
self._logger.info(msg)
if rh > self._target_rh:
self._humidifier.set(Humidifier.OFF)
else:
self._humidifier.set(Humidifier.ON)
class CouchHeartbeat(object):
"""Heartbeat object """
logger = None
def __init__(self):
"""Standard constructor
Get and hold a Python logger
"""
self._logger = Logger('CouchHeartbeat', Logger.INFO,
"/home/pi/MVP/logs/heartbeat.log")
def check(self, port):
"""Ping the database
Should return the welcome message
Throws an exception if cannot make a connection to the database
Args:
port: port the database is communicating on
Returns:
None
Raises:
None
"""
cmd = 'curl -X GET http://localhost:5984'
ret = os.system(cmd)
if ret == 0:
self._logger.info('localhost Couch is Up')
else:
self._logger.error('Couch is Down')
self.restart()
def restart(self):
"""System restart (reboot)
Args:
None
Returns:
None
Raises:
None
"""
cmd = 'sudo reboot'
self.logger.warning('System restart: %s' % (cmd))
os.system(cmd)
class V_CO2(object):
def __init__(self, logger=None):
self._logger = logger
if logger == None:
self._logger = Logger("V_CO2", Logger.INFO)
self._gdx = gdx()
self._gdx.open_usb()
#self._headers = self._gdx.enabled_sensor_info(self._gdx)
self._headers = self._gdx.enabled_sensor_info()
self._info = self._gdx.sensor_info()
self._logger.info("Initialized V_CO2")
sleep(20) # wait 20 seconds to warm up
def _exit_(self):
self.close()
def close(self):
self._gdx.stop()
self._gdx.close()
def info(self):
# 0 = sensor number, 1 = description, 2 = units, 3 = incompatible sensors
for info in self._info:
sensor_number = info[0]
sensor_description = info[1]
sensor_units = info[2]
incompatible_sensors = info[3]
print("sensor number = ", sensor_number)
print("sensor description = ", sensor_description)
print("sensor units = ", sensor_units)
print("incompatible sensors = ", incompatible_sensors)
print()
print('End Sensor Info')
def read(self):
self._gdx.select_sensors([1,2, 3])
self._gdx.start(period=1000)
for x in range(0, 6):
data = self._gdx.read()
print(data)
def getData(self):
self._gdx.select_sensors([1,2, 3])
self._gdx.start(period=1000)
data = self._gdx.read()
if data is None:
return None
temp = data[0]
humidity = data[1]
co2 = data[2]
return temp, humidity, co2
def log(self):
# isolate Sheet to this function
# Note: this is a push data function
from G_AppendUtil import AppendUtil
util = AppendUtil()
# Pull data from all three channels co2, temp, humidity
self._gdx.select_sensors([1,2,3])
self._gdx.start(period=1000)
while True:
data = self._gdx.read()
co2 = data[0]
temp = data[1]
hum = data[2]
c_rec = ['Environment_Observation', '', 'Canopy', 'Air', 'CO2', "{:3.1f}".format(co2), 'ppm', 'Vernier', 'Success','']
t_rec = ['Environment_Observation', '', 'Canopy', 'Air', 'Temperature', "{:3.1f}".format(temp), 'C', 'Vernier', 'Success','']
h_rec = ['Environment_Observation', '', 'Canopy', 'Air', 'Humidity', "{:3.1f}".format(hum), '%', 'Vernier', 'Success','']
util.save(c_rec)
util.save(t_rec)
util.save(h_rec)
sleep(3)
print(data)
class LogShroom(object):
def __init__(self, logger=None):
"""Create sensor object
Args:
None
Returns:
None
Raises:
None
"""
self._logger = logger
if logger == None:
self._logger = Logger("LogShroom",
Logger.INFO,
file="/home/pi/MVP/logs/obsv.log")
self._logger.debug("Initialize LogShroom")
self._couch = CouchUtil(self._logger)
# flag for testing
self._test = False
def log(self):
"""Routine to log all sensors
Args:
None
Returns:
None
Raises:
None
"""
self.getSCD()
def getSCD(self):
"""Record CO2 sensor (scd30)
Generates co2, temperature and relative humidity
Args:
None
Returns:
None
Raises:
None
"""
from scd30 import SCD30
self._scd = SCD30(self._logger)
self._logger.debug("In SCD30")
try:
co2, temp, rh = self._scd.get_data()
status = 'Success'
if self._test:
status = 'Test'
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'CO2',
"{:10.1f}".format(co2), 'ppm', 'scd30', status, ''
])
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'Temperature',
"{:10.1f}".format(temp), 'Centigrade', 'scd30', status, ''
])
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'Humidity',
"{:10.1f}".format(rh), 'Percent', 'scd30', status, ''
])
self._logger.info("{} {:6.1f}, {} {:3.1f}, {} {:3.1f}".format(
"EnvObsv-CO2:", co2, "Temp", temp, "Humidity:", rh))
except Exception as e:
status = 'Failure'
if self._test:
status = 'Test'
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'CO2', '', 'ppm',
'scd30', status,
str(e)
])
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'Temperature', '',
'Centigrde', 'scd30', status, ''
])
self._couch.saveList([
'Environment_Observation', '', 'Top', 'Air', 'Humidity', '',
'Percent', 'scd30', status, ''
])
self._logger.debug("{} {}".format("EnvObsv-SCD30 Error:", e))
class SI7021(object):
def __init__(self, logger=None):
self._addr = addr
self._path = path
self._logger = logger
if logger == None:
self._logger = Logger("SI7021", Logger.INFO,
"/home/pi/MVP/logs/obsv.log")
self._i2c = I2C(path, addr, self._logger)
def calc_humidity(self, read):
"""Calculate relative humidity from sensor reading
Args:
read: the sensor value
Returns:
rh: calculated relative humidity
Raises:
None
"""
rh = ((125.0 * read) / 65536.0) - 6.0
return rh
def calc_temp(self, read):
"""Calculate relative humidity from sensor reading
Args:
read: the sensor value
Returns:
tempC: calculated temperature in Centigrade
Raises:
None
"""
tempC = ((175.72 * read) / 65536.0) - 46.85
return tempC
def get_tempC_prior(self):
"""Get the temperature from the prior humidity reading
Args:
None
Returns:
tempC: calculated temperature in Centigrade
Raises:
None
"""
msgs = self._i2c.get_data([previous_temp], 0.03, 3)
if msgs == None:
return None
else:
value = self._i2c.bytesToWord(msgs[0].data[0], msgs[0].data[1])
tempC = self.calc_temp(value)
return tempC
def get_humidity(self):
"""Get the humidity
Args:
None
Returns:
rh: calculated relative humidity
Raises:
None
"""
msgs = self._i2c.get_data([rh_no_hold], 0.03, 2)
value = self._i2c.bytesToWord(msgs[0].data[0], msgs[0].data[1])
if value == None:
return None
else:
rh = self.calc_humidity(value)
return rh
def get_tempC(self):
"""Get the temperature (new reading)
Args:
None
Returns:
tempC: calculated temperature in Centigrade
Raises:
None
"""
msgs = self._i2c.get_data([temp_no_hold], 0.03, 3)
value = self._i2c.bytesToWord(msgs[0].data[0], msgs[0].data[1])
if value == None:
return None
else:
return self.calc_temp(value)
def get_rev(self):
"""Get the firmware revision number
Args:
None
Returns:
rev: coded revision number
Raises:
None
"""
self._logger.info("\nGet Revision")
# msgs = self._i2c.get_msg([firm_rev_1_1, firm_rev_1_2], 3)
msgs = self._i2c.get_data([firm_rev_1_1, firm_rev_1_2], 0.03, 3)
# Need to test, may error out on some conditions
if not ((msgs is None) or (msgs[0].data is None)):
rev = msgs[0].data[0]
if rev == 0xFF:
self._logger.info("version 1.0")
elif rev == 0x20:
self._logger.info("version 2.0")
else:
self._logger.error("Unknown")
else:
self._logger.error("No Revision Data Available")
return rev
def get_id1(self):
"""Print the first part of the chips unique id
Args:
None
Returns:
None
Raises:
None
"""
self._logger.info("\nGet ID 1")
try:
msgs = self._i2c.get_data([read_id_1_1, read_id_1_2], 0.05, 4)
ret = msgs[0].data
for data in ret:
self._logger.info("ID: " + str(hex(data)))
except Exception as e:
self._logger.error("Error getting msgs " + str(e))
def get_id2(self):
"""Print the second part of the chips unique id
The device version is in SNA_3
Args:
None
Returns:
None
Raises:
None
"""
self._logger.info("\nGet ID 2")
msgs = self._i2c.get_data([read_id_2_1, read_id_2_2], 0.05, 4)
ret = msgs[0].data
for data in ret:
self._logger.info("ID" + str(hex(data)))
sna3 = msgs[0].data[0]
if sna3 == 0x00:
self._logger.info("Device: Engineering Sample")
elif sna3 == 0xFF:
self._logger.info("Device: Engineering Sample")
elif sna3 == 0x14:
self._logger.info("Device: SI7020")
elif sna3 == 0x15:
self._logger.info("Device: SI7021")
else:
self._logger.error("Unknown")
def reset(self):
"""Reset the device
Args:
None
Returns:
None
Raises:
None
"""
self._logger.info("\nReset")
rev_1 = self._i2c.msg_write([reset_cmd])
self._logger.info("Reset: " + str(rev_1))
class Reservoir:
FULL = 0
EMPTY = 1
OK = 2
vol_per_mm = 0.3785 # estimate 1 gal per 10 mm, this is reservoir specific
vol_per_sec = 0.3785 # estimate 100 ml per sec, this is reservoir specific
def __init__(self):
'''Get distances for determining reservoir levels'''
self.res = {'full': full_ec, 'empty': empty_ec, 'timeout': timeout}
self._activity_type = 'Agronomic_Activity'
self._logger = Logger('LogReservoir', Logger.INFO)
self._persist = Persistence(self._logger)
self._logger.detail("Reservoir Initialized")
# flag for testing
self._test = False
def getStatus(self):
"Logic for calling the reservoir full"
self._logger.detail("In getStatus")
ec = self.getEC()
if ec <= full_ec:
self._logger.debug("{}, {}, {:10.1f}".format(
"Reservoir Full", EC, ec))
return Reservoir.FULL, ec
elif ec >= empty_ec:
self._logger.debug("{}, {}, {:10.1f}".format(
"Reservoir Empty", EC, ec))
return Reservoir.EMPTY, ec
else:
self._logger.debug("{}, {}, {:10.1f}".format(
"Reservoir not Empty", EC, ec))
return Reservoir.OK, ec
def isFull(self):
self._logger.detail("In isFull")
status, ec = self.getStatus()
if status == Reservoir.FULL:
return True
else:
return False
def getEC(self):
'''Get EC reading'''
self._logger.detail("In getEC")
snsr = EC(self._logger)
return snsr.getEC()
def fill(self, test=False):
''' Routine to control re-filling of the reservoir'''
self._logger.detail("{}".format("In Fill"))
start_ec = self.getEC()
start_t = time.time()
pump = Pump()
pump.on()
# Loop till filled or times out
while (not self.isFull()) and self.isFilling(start_t):
self._logger.detail("{}".format("In Fill Loop"))
self._logger.detail("{}".format("Exit Fill Loop, close solenoid"))
# Close valve
pump.off()
# Calculate amount filled
stop_t = time.time()
stop_ec = self.getEC()
dif_t = stop_t - start_t
volume = dif_t * self.vol_per_sec
self._logger.detail("{}".format("Exit Fill"))
return volume
def isFilling(self, start_time, test=False):
'''Check that actually filling: the distance is actually changing'''
start_ec = self.getEC()
self._logger.detail("{} {}".format("Filling, Start EC:", start_ec))
time.sleep(fill_time)
# Check for level change first, else will never get to this logic till timeout
end_ec = self.getEC()
change = start_ec - end_ec
if end_ec < start_ec: # need to see at least a 5mm change
self._logger.detail("{} {} {} {} {} {}".format(
"Still Filling, change:", change, "Start", start_ec, "End",
end_ec))
return True
else:
self._logger.detail("{} {} {} {} {} {}".format(
"Not Filling, no change:", change, "Start", start_ec, "End",
end_ec))
return False
# Check for timeout
stop_time = time.time()
if stop_time - start_time > self.res['timeout']:
self._logger.detail("{}".format("Timeout"))
return False
else:
return True
def checkReservoir(self):
'''Check condition of reservoir and fill if necessary'''
self._logger.detail("{}".format("Check Reservoir"))
status, ec = self.getStatus()
self._logger.debug("{} {} {} {}".format("Status:", status, "EC", ec))
# Is full, log state
if status == Reservoir.FULL:
self._logger.detail("{}".format("Status: Full"))
self._logger.info("{} {} {} {}".format("EC:", ec, "Full level:",
self.res['full'], "Empty:",
self.res['empty']))
return True
else:
# Needs filling
self._logger.debug("{}".format("Status: Filling"))
volume = self.fill()
if volume > 0:
# Filled, log volume
self.logState(volume, 'Success')
return True
else:
# Failure
self._logger.debug("{}".format("Status: Failure"))
level = 'Empty'
if status == '2':
level = 'Ok'
self._logger.error("{}".format("Failure to fill Reservoir"))
self._logger.error("{} {} {} {}".format(
"EC:", ec, "Full level:", self.res['full'], "Empty:",
self.res['empty']))
self.logState(volume, 'Failure')
return False
def logState(self, value, status_qualifier):
if self._test:
status_qualifier = 'Test'
txt = {
'Volume': value,
'full_level': self.res['full'],
'empty_level': self.res['empty'],
'status': 'Full'
}
self._persist.save([
'State_Change', '', 'Nutrient', 'Reservoir', 'Volume', value,
'Liter', 'Solenoid', status_qualifier, ''
])
self._logger.info(txt)
class LogSensorsExtra(object):
def __init__(self, lvl=Logger.INFO):
"""Record optional sensor data
Args:
lvl: Logging level
Returns:
None
Raises:
None
"""
self._logger = Logger("LogSensor-Extra",
lvl,
file="/home/pi/MVP/logs/obsv.log")
self._activity_type = "Environment_Observation"
self._test = False
self._persist = Persistence(self._logger)
def getOneWire(self, test=False):
"""Loop OneWire temperature sensors
Assumes there are four
Args:
test: flag for testing
Returns:
None
Raises:
None
"""
self._logger.debug("In getOneWire")
from OneWireTemp import OneWireTemp
for sensor in OneWireTemp.one_temp:
self.logOneWire(sensor, OneWireTemp.one_temp[sensor])
def logOneWire(self, sensor, name, test=False):
"""Record OneWire temperature sensor
Args:
sensor: number of the sensor
name: name of the sensor
test: flag for testing
Returns:
None
Raises:
None
"""
self._logger.debug("In logOneWire")
from OneWireTemp import OneWireTemp
try:
ow = OneWireTemp()
temp = ow.getTempC(sensor)
status_qualifier = 'Success'
if self._test:
status_qualifier = 'Test'
rec = [
self._activity_type, '', name, 'Air', 'Temperature',
"{:10.1f}".format(temp), 'Centigrade',
'DS18B20-' + str(sensor), status_qualifier, ''
]
self._persist.save(rec)
self._logger.info("{}, {}, {:10.1f}".format(
name, status_qualifier, temp))
except Exception as e:
status_qualifier = 'Failure'
if test:
status_qualifier = 'Test'
rec = [
self._activity_type, '', name, 'Air', 'Temperature', '',
'Centigrade', 'DS18B20-' + str(sensor), status_qualifier,
str(e)
]
self._persist.save(rec)
self._logger.error("{}, {}, {}".format(name, status_qualifier, e))
def getLux(self, test=False):
"""Record LUX sensor (TSL2561)
Args:
test: flag for testing
Returns:
None
Raises:
None
"""
from TSL2561 import TSL2561
lx = TSL2561()
self._logger.info("TSL2561 - LUX")
try:
lux = lx.getLux()
status_qualifier = 'Success'
if test:
status_qualifier = 'Test'
rec = [
self._activity_type, '', 'Canopy', 'Light', 'LUX',
"{:3.1f}".format(lux), 'lux', 'TSL2561', status_qualifier, ''
]
self._persist.save(rec)
self._logger.info("{}, {}, {:10.1f}".format(
"LUX", status_qualifier, lux))
except Exception as e:
status_qualifier = 'Failure'
if test:
status_qualifier = 'Test'
rec = [
self._activity_type, '', 'Canopy', 'Light', 'LUX', '', 'lux',
'TSL2561', status_qualifier,
str(e)
]
self._persist.save(rec)
self._logger.error("{}, {}, {}".format("LUX", status_qualifier, e))
def getEC(self, test=False):
"""Record EC sensor (EC - ADC reading)
Args:
test: flag for testing
Returns:
None
Raises:
None
"""
from EC import EC
self._logger.info("EC")
try:
s = EC()
ec = s.getEC()
status_qualifier = 'Success'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("EC", status_qualifier, ec))
rec = [
self._activity_type, '', 'Reservoir', 'Nutrient', 'EC',
"{:3.1f}".format(ec), 'EC', 'EC', status_qualifier, ''
]
self._persist.save(rec)
self._logger.info("{}, {}, {:10.1f}".format(
"EC", status_qualifier, ec))
except Exception as e:
status_qualifier = 'Failure'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("EC", status_qualifier, ec))
rec = [
self._activity_type, '', 'Reservoir', 'Nutrient', 'EC', '',
'EC', 'EC', status_qualifier,
str(e)
]
self._persist.save(rec)
self._logger.error("{}, {}, {}".format("EC CCS811",
status_qualifier, e))
def getCO2_NDIR(self, test=False):
"""Record CO2 sensor (NDIR)
Args:
test: flag for testing
Returns:
None
Raises:
None
"""
from NDIR import Sensor
self._logger.info("CO2 - NDIR")
try:
sensor = Sensor()
sensor.begin()
co2 = sensor.getCO2()
status_qualifier = 'Success'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("CO2 Canopy", status_qualifier,
co2))
rec = [
self._activity_type, '', 'Canopy', 'Air', 'CO2',
"{:3.1f}".format(co2), 'ppm', 'MH-Z16-NDIR', status_qualifier,
''
]
self._persist.save(rec)
self._logger.debug("{}, {}, {:10.1f}".format(
"CO2", status_qualifier, co2))
except Exception as e:
status_qualifier = 'Failure'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("CO2 Canopy", status_qualifier,
co2))
rec = [
self._activity_type, '', 'Canopy', 'Air', 'CO2', '', 'ppm',
'MH-Z16-NDIR', status_qualifier,
str(e)
]
self._persist.save(rec)
self._logger.error("{}, {}, {}".format("CO2 NDIR",
status_qualifier, e))
def getCO2_CCS811(self, test=False):
"""Record CO2 sensor (CCS811)
Args:
test: flag for testing
Returns:
None
Raises:
None
"""
from CCS811 import CCS811
self._logger.info("CO2 CCS811")
try:
sensor = CCS811(SLAVE)
co2 = sensor.get_co2()
status_qualifier = 'Success'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("CO2 Canopy", status_qualifier,
co2))
rec = [
self._activity_type, '', 'Canopy', 'Air', 'CO2',
"{:3.1f}".format(co2), 'ppm', 'CCS811',
str(e)
]
self._persist.save(rec)
self._logger.debug("{}, {}, {:10.1f}".format(
"CCS811 - CO2", status_qualifier, co2))
except Exception as e:
status_qualifier = 'Failure'
if test:
status_qualifier = 'Test'
print("{}, {}, {:10.1f}".format("CO2 Canopy", status_qualifier,
co2))
rec = [
self._activity_type, '', 'Canopy', 'Air', 'CO2', '', 'ppm',
'CCS811', status_qualifier,
str(e)
]
self._persist.save(rec)
self._logger.error("{}, {}, {}".format("CO2 CCS811",
status_qualifier, e))
def getSCD(self):
"""Record CO2 sensor (scd30)
Generates co2, temperature and relative humidity
Args:
None
Returns:
None
Raises:
None
"""
from scd30 import SCD30
self._scd = SCD30(self._logger)
self._logger.debug("In SCD30")
try:
co2, temp, rh = self._scd.get_data()
status = 'Success'
if self._test:
status = 'Test'
c_rec = [
'Environment_Observation', '', 'Top', 'Air', 'CO2',
"{:10.1f}".format(co2), 'ppm', 'scd30', status, ''
]
t_rec = [
'Environment_Observation', '', 'Top', 'Air', 'Temperature',
"{:10.1f}".format(temp), 'Centigrade', 'scd30', status, ''
]
h_rec = [
'Environment_Observation', '', 'Top', 'Air', 'Humidity',
"{:10.1f}".format(rh), 'Percent', 'scd30', status, ''
]
self._persist.save(c_rec)
self._persist.save(t_rec)
self._persist.save(h_rec)
self._logger.info("{} {:6.1f}, {} {:3.1f}, {} {:3.1f}".format(
"EnvObsv-CO2:", co2, "Temp", temp, "Humidity:", rh))
except Exception as e:
status = 'Failure'
if self._test:
status = 'Test'
c_rec = [
'Environment_Observation', '', 'Top', 'Air', 'CO2', '', 'ppm',
'scd30', status,
str(e)
]
t_rec = [
'Environment_Observation', '', 'Top', 'Air', 'Temperature', '',
'Centigrde', 'scd30', status, ''
]
h_rec = [
'Environment_Observation', '', 'Top', 'Air', 'Humidity', '',
'Percent', 'scd30', status, ''
]
self._persist.save(c_rec)
self._persist.save(t_rec)
self._persist.save(h_rec)
self._logger.debug("{} {}".format("EnvObsv-SCD30 Error:", e))
def log(self):
'''Log extra sensors
Uncomment desired sensors
Imports are in the function to avoid loading unnecessary code
'''
#self.getOneWire()
self.getLux()
self.getEC()
self.getCO2_NDIR()
#self.getCO2_CCS811()
self.getSCD()