def read_sensors(all_curr_readings, location, ADS1115):
"""
Generic version to work with any number of locations
Read data from all sensors
:param all_curr_readings: dictionary to hold all readings
:param location: supports any number of unique hydro tanks
:param ADS1115: AdaFruit ads1115 16 bit. Supports any number of sensors
"""
# Get the readings from any 1-Wire temperature sensors. This sensor is submerged in the tank
for key, value in sensors.items():
if value["is_connected"] is True:
if value["sensor_type"] == "1_wire_temp":
try:
sensor_reading = (round(float(read_1_wire_temp(key)),
value["accuracy"]))
except (sensor_reading == 0):
sensor_reading = 0
ref_temp = 25
all_curr_readings.append(
[value["name"], sensor_reading, location])
if value["is_ref"] is True:
ref_temp = sensor_reading
# Get the readings from any Gravity pH sensors
# ADS channel P0
if value["sensor_type"] == "gravity_ph":
# Create single-ended input on channel 0
try:
# chan = AnalogIn(ads, ADS.P0)
# set the gain value and then read the sensor voltage
ads1115_r.setGain(ADS1115_REG_CONFIG_PGA_6_144V)
adc0 = ads1115_r.readVoltage(0)
# Create differential input between channel 0 and 1
# chan = AnalogIn(ads, ADS.P0, ADS.P1)
# debug
# print("{:>5}\t{:>5.3f}".format(chan.value, chan.voltage))
# get ph compensated value based on submerged temperature value
ph_comp = ph.readPH(adc0['r'], ref_temp)
all_curr_readings.append(
[value["name"], ph_comp, location])
except (ph_comp == 0):
sensor_reading = 0.0
# Get the readings from any Gravity Electrical Conductivity sensors
# ADS channel P1
if value["sensor_type"] == "gravity_ec":
# Create single-ended input on channel 0
try:
# chan = AnalogIn(ads, ADS.P1)
ads1115_r.setGain(ADS1115_REG_CONFIG_PGA_6_144V)
adc1 = ads1115_r.readVoltage(1)
ec_comp = ec.readEC(adc1['r'], ref_temp)
all_curr_readings.append(
[value["name"], ec_comp, location])
except (ec_comp == 0):
sensor_reading = 0.0
# Get the readings from any Gravity ORP sensors
# ADS channel P2. Measured in milli-volts
if value["sensor_type"] == "gravity_orp":
# Create single-ended input on channel 0
try:
chan = AnalogIn(ads_r, ADS.P2)
# debug
# print("{:>5}\t{:>5.3f}".format(chan.value, chan.voltage))
all_curr_readings.append(
[value["name"], chan.value, location])
except (chan == []):
sensor_reading = 0.0
# Get the readings from Optomax water level sensor
if value["sensor_type"] == "optomax_digital_liquid_sensor":
try:
if GPIO.input(gpio_pin) == 0:
# debug
# print("GPIO pin 12 is: ", GPIO.input(gpio_pin))
all_curr_readings.append([value["name"], 0, location])
if GPIO.input(gpio_pin) == 1:
all_curr_readings.append([value["name"], 1, location])
except (GPIO.UNKNOWN()):
log.error("GPIO.UNKNOWN this should never happen")