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Parallax P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the ASAIR AHT20 Temp/RH sensor

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avsa242/aht20-spin

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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 (6.5.0-beta) Bytecode OK
P1 SPIN1 FlexSpin (6.5.0-beta) Native code OK
P2 SPIN2 FlexSpin (6.5.0-beta) NuCode OK
P2 SPIN2 FlexSpin (6.5.0-beta) Native code OK

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

Limitations

  • TBD