max31856-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for Maxim's MAX31856 SPI Thermocouple amplifier IC.

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

• 4-wire SPI connection at up to 1MHz (P1), 5MHz (P2)
• Reads on-chip cold-junction temperature sensor
• Reads thermocouple
• Supports automatic or one-shot conversion modes
• Supports built-in cold-junction offset compensation
• Supports 50/60Hz mains power frequency noise rejection
• Supports setting temperature interrupt thresholds
• Supports setting/checking for all fault types supported by the sensor
• Supports setting thermocouple type

Requirements

P1/SPIN1:

• spin-standard-library
• 1 extra core/cog for the PASM SPI engine (none if bytecode-based engine is used)

P2/SPIN2:

• p2-spin-standard-library

Compiler Compatibility

Processor	Language	Compiler	Backend	Status
P1	SPIN1	FlexSpin (6.2.1)	Bytecode	OK
P1	SPIN1	FlexSpin (6.2.1)	Native/PASM	OK
P2	SPIN2	FlexSpin (6.2.1)	NuCode	FTBFS
P2	SPIN2	FlexSpin (6.2.1)	Native/PASM2	OK

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

Limitations

• The chip has no known identification register, so the driver will start successfully as long as the SPI engine does