Eliminated Range Setting

Setting the range to 0.8 or 0.4 amperes was not useful. Setting the 0.4 ampere range suggested an increased resolution. But the resolution is given by the shunt voltage register resolution.

Compatibility with INA219_WE

When I developed the library I did not choose the best enum names for the measure modes. E.g. "POWER_DOWN" is also used in INA219_WE. If you have problems then uncomment the line: #define INA226_WE_COMPATIBILITY_MODE_ in INA226_WE_config.h and use "INA226_POWER_DOWN" instead of "POWER_DOWN". Do the same for "CONTINUOUS" (-> INA226_CONTINUOUS) AND TRIGGERED (-> INA226_TRIGGERED).

Added a function to return the I2C error code

I added the function getI2cErrorCode() which return the return value of endTransmission. I updated the example sketches Trigger.ino and Continuous.ino to show how it works.

I have also added a timeout check for startSingleMeasurement() of 2 seconds to avoid that the program hangs forever in case of unavailability of the INA226.

Replaced defines by constexpr

Several changes:

• tidied constructors
• replaced #defines by constexpr
• replaced C-Cast by static_cast
• replace private by protected
• corrected typos in example sketches

Added comments about poor quality modules in readme

Added comments about poor quality modules in readme

Read performance increase

In the readRegister function, I have added a "false" in Wire.endTransmission() ---> Wire.endTransmission(false) before Wire.requestFrom(). This saves some microseconds.

TwoWire object can now be passed to the constructor

There are now new options to create your INA226 object:

• INA226_WE ina226 = INA226_WE() -> uses Wire / I2C Address = 0x40
• INA226_WE ina226 = INA226_WE(ICM20948_ADDR) -> uses Wire / I2C_ADDRESS
• INA226_WE ina226 = INA226_WE(&wire2) -> uses the TwoWire object wire2 / I2C_ADDRESS
• INA226_WE ina226 = INA226_WE(&wire2, I2C_ADDRESS) -> all together

This enables you to e.g. to use the two ESP32 I2C busses

Several new functions

measureMode -> INA226measureMode in enum to stop clash with ADS1115_WE
init() checks existance of device and returns 1 if it exists else 0
added getShuntVolatage_V method
added getCurrent_A method
added startSingleMeasurementNoWait method
added isBusy method

English documentation available now

English documentation now available:

https://wolles-elektronikkiste.de/en/ina226-current-and-power-sensor

And some typos corrected in comments in example sketches.

No change to the code.

You can choose a resistor now

With this version it is possible to choose a resistor. So you could use the INA226 IC instead of the module and take the resistor which suits you best. An example (Continuous_With_Resistor_Value.ino) has been added.