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aht20-spin

This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the ASAIR AHT20 Temperature/RH 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 400kHz
  • Read temperature, relative humidity (current and previous measurements)
  • Measurements are validated by CRC

Requirements

P1/SPIN1:

  • spin-standard-library
  • sensor.temp_rh.common.spinh (provided by spin-standard-library)
  • 1 extra core/cog for the PASM-based I2C engine (none if bytecode-based engine is used)

P2/SPIN2:

  • p2-spin-standard-library
  • sensor.temp_rh.common.spin2h (provided by p2-spin-standard-library)

Compiler Compatibility

Processor Language Compiler Backend Status
P1 SPIN1 FlexSpin (6.9.4) Bytecode OK
P1 SPIN1 FlexSpin (6.9.4) Native code OK
P2 SPIN2 FlexSpin (6.9.4) NuCode OK
P2 SPIN2 FlexSpin (6.9.4) Native code OK

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

Limitations

  • TBD