scd30-spin

This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the Sensirion SCD30 CO2 sensor.

IMPORTANT: This software is meant to be used with the spin-standard-library (P8X32A) or p2-spin-standard-library (P2X8C4M64P). Please install the applicable library first before attempting to use this code, otherwise you will be missing several files required to build the project.

Salient Features

• I2C connection at up to 100kHz (P2, or P1 with PASM engine), or ~30kHz (P1, SPIN engine)
  (max recommended according to Sensirion is 50kHz)
• Read CO2, Temperature, RH data (IEEE-754 float, or hundredths of unit integer)
• Set measurement interval in seconds
• Sensor data-ready status
• Read sensor firmware version
• Soft-reset
• Set altitude or ambient pressure used to compensate CO2 readings
• Automatic or manual calibration

Requirements

P1/SPIN1:

• spin-standard-library
• 1 extra core/cog for the PASM I2C engine (none if the SPIN I2C engine is used)
• sensor.temp.common.spinh (source: spin-standard-library)
• sensor.rh.common.spinh (source: spin-standard-library)
• sensor.co2.common.spinh (source: spin-standard-library)

P2/SPIN2:

• p2-spin-standard-library
• sensor.temp.common.spin2h (source: p2-spin-standard-library)
• sensor.rh.common.spin2h (source: p2-spin-standard-library)
• sensor.co2.common.spin2h (source: p2-spin-standard-library)

Compiler Compatibility

(other versions or toolchains not listed are not supported, and may or may not work)

Limitations

• Requires a build-time change of behavior to the I2C engine (symbol QUIRK_SCD30 is automatically
  enabled by the driver at build-time)