Unit CO2

Example

Obtain atmospheric CO2 concentration, temperature, humidity and atmospheric pressure data collected by Unit CO2L

from m5stack import *
from m5ui import *
from uiflow import *
import time
import unit

setScreenColor(0x222222)
co2_0 = unit.get(unit.CO2_SCD40, unit.PORTA)

co2_0.stop_periodic_measurement()
print(co2_0.serial_number())
print(co2_0.get_calibration_enabled())
co2_0.start_periodic_measurement()
wait(1)
while True:
  if co2_0.data_isready():
    co2_0.read_sensor_measurement()
    print((str('data status:') + str((co2_0.data_isready()))))
    print((str('CO2:') + str((co2_0.co2))))
    print((str('Temperature:') + str((co2_0.temperature))))
    wait_ms(25)
  wait_ms(2) 

API

co2_0.stop_periodic_measurement()

Stop Periodic Measurements

co2_0.factory_reset()

Perform Factory Reset

co2_0.force_calibration(400)

Force Recalibration of CO2

print(co2_0.get_calibration_enabled())

Get Auto-Calibration Enabled Status

print(co2_0.data_isready())

Get Data Ready Status

print(co2_0.get_sensor_altitude())

Get Sensor Height

co2_0.read_sensor_measurement()

Wait for Sensor Measurement Update

print(co2_0.serial_number())

Get Sensor Serial Number

print(co2_0.get_temperature_offset())

Get Temperature Offset

co2_0.persist_settings()

Save All Settings to EEPROM

co2_0.sleep_mode()

Set Sensor to Sleep Mode

print(co2_0.co2)

Get CO2/Humidity/Temperature Values

co2_0.reinit()

Reinitialize Sensor

co2_0.self_test()

Perform Self-Test

co2_0.set_ambient_pressure(0)

Set Ambient Air Pressure

co2_0.set_calibration_enabled(1)

Set Auto-Calibration Enabled

co2_0.set_sensor_altitude(0)

Set Sensor Height from Ground (Mark)

co2_0.set_temperature_offset(4)

Set Temperature Offset

co2_0.start_low_periodic_measurement()

Start Low Frequency Measurements (30 Seconds Interval)

co2_0.start_periodic_measurement()

Start Device Measurements

co2_0.wake_up()

Wake Up Sensor

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