def Gas_NH3(tests, num_test_bytes, write_tests_to_nvm, reset):
try:
from pimoroni_envirowing import gas
if 0 <= gas.read_all().nh3 <= 5:
tests["Gas_NH3"]["Passed"] = True
print("Passed with", gas.read_all().nh3)
else:
tests["Gas_NH3"]["Passed"] = False
print("Failed")
except Exception as e:
tests["Gas_NH3"]["Passed"] = False
print("Failed with ", e)
finally:
tests["Gas_NH3"]["Test Run"] = True
write_tests_to_nvm(tests, num_test_bytes)
reset()
from pimoroni_envirowing import gas
import time
while True:
try:
print(gas.read_all())
time.sleep(0.1)
finally:
gas.cleanup()
max_glyphs=15))
# from https://stackoverflow.com/a/49955617
def human_format(num, round_to=0):
magnitude = 0
while abs(num) >= 1000:
magnitude += 1
num = round(num / 1000.0, round_to)
return '{:.{}f}{}'.format(round(num, round_to), round_to,
['', 'K', 'M', 'G', 'T', 'P'][magnitude])
while True:
#take readings
reading = gas.read_all()
# update the line graph
# the value plotted on the graph is the voltage drop over each sensor, not the resistance, as it graphs nicer
splotter.update(
reading._OX.value * (reading._OX.reference_voltage / 65535),
reading._RED.value * (reading._RED.reference_voltage / 65535),
reading._NH3.value * (reading._NH3.reference_voltage / 65535))
# update the labels
splotter.group[1].text = "OX:{}".format(human_format(reading.oxidising))
splotter.group[2].text = "RED:{}".format(human_format(reading.reducing))
splotter.group[3].text = "NH3:{}".format(human_format(reading.nh3))
time.sleep(interval)
bme280 = adafruit_bme280.Adafruit_BME280_I2C(i2c, address=0x76)
bme280.sea_level_pressure = 1013.25
softassert.softassert(lambda: -50 <= bme280.temperature <= 50,
"Temperature out of expected range")
softassert.softassert(lambda: 0 <= bme280.humidity <= 100,
"Humidity out of expected range")
softassert.softassert(lambda: 850 <= bme280.pressure <= 1100,
"Pressure out of expected range")
print("BME280 Tests Passed!")
#endregion BME280 testing
#region Gas Sensor testing
softassert.softassert(lambda: 0 <= gas.read_all().oxidising <= 5,
"Oxidising gases reading out of expected range")
softassert.softassert(lambda: 0 <= gas.read_all().reducing <= 5,
"Reducing gases reading out of expected range")
softassert.softassert(lambda: 0 <= gas.read_all().nh3 <= 5,
"NH3 gases reading out of expected range")
print("Gas Sensor Tests Passed!")
#endregion Gas Sensor testing
#region Light/Prox Sensor testing
i2c_dev = not_SMBus(I2C=i2c)
ltr559 = LTR559(i2c_dev=i2c_dev)
softassert.softassert(lambda: 0 <= ltr559.get_lux() <= 30000,
"Lux out of expected range")