sfDevINA237.h File Reference

Header file for the SparkFun INA237 power monitor driver. More...

#include "sfDevINA2XX.h"

Go to the source code of this file.

Classes
class	sfDevINA237
	INA237 power monitor driver (also covers the register-compatible INA238). More...

Detailed Description

Header file for the SparkFun INA237 power monitor driver.

sfDevINA237 extends sfDevINA2XX with INA237-specific measurement capabilities:

• 16-bit ADC with 16-bit measurement registers (VSHUNT, VBUS, CURRENT)
• 24-bit POWER register
• No energy or charge accumulation (registers 0x09/0x0A do not exist)
• Lower-precision LSB scaling (5 uV shunt, 3.125 mV bus, 125 m-deg-C temp)
• Calibration using scale constant 819.2 x 10^6

The measurement bodies themselves live once in sfDevINA2XX as individually templated/parameterized helpers; the methods below are thin forwarders that pass the INA237 types and constants. Like the base class, every method returns a SparkFun Toolkit error code; measured values are returned through reference (output) parameters.

Author

SparkFun Electronics

Date

June 2026

Copyright

Copyright (c) 2026, SparkFun Electronics Inc. This project is released under the MIT License.

SPDX-License-Identifier: MIT

See also

https://github.com/sparkfun/SparkFun_INA2XX_Arduino_Library