ina3221 spin

ina3221-spin

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This is a P8X32A/Propeller, P2X8C4M64P/Propeller 2 driver object for the INA3221 triple-channel power 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
• Soft-reset
• Read bus voltage, shunt voltage, current, and power (per enabled channels), shunt voltage (summed), bus voltage (summed) in ADC words or human-readable values (x1000000 scale integers)
• Set shunt resistance
• Set conversion time (Vbus, Vshunt)
• Set sample averaging mode
• Set operating mode: continuous or single-shot measurements, power down; any combination of bus and shunt voltage measurements
• Set interrupt thresholds (current, bus voltage, shunt voltage sum)

Requirements

P1/SPIN1:

• spin-standard-library
• sensor.power.common.spinh (provided by spin-standard-library)

P2/SPIN2:

• p2-spin-standard-library
• sensor.power.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/PASM	Build OK
P2	SPIN2	FlexSpin (6.9.4)	NuCode	OK
P2	SPIN2	FlexSpin (6.9.4)	Native/PASM2	OK

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

Limitations

• doesn't support the HS I2C (2.44MHz) interface