Generic Register Access Abstraction?

[stefanhaustein]

Could it make sense to add "generic" super-interfaces for I2CRegisterDataReader/Writer?

Many devices seem to be register based, providing the same functionality via SPI and I2C.

Of course, one could (ab)use the I2C interfaces for SPI support in a driver implementation, but this just seems a bit odd...

[IAmNickNack]

If the underlying driver supported it, this could be also used for SPI.

I had a similar thought when working with MCP23008 and MCP23S08. Register-like functionality isn't specific to i2c outside of Pi4j.

[IAmNickNack]

Working with registers doesn't really appear to be an i2c thing. I only have limited experience, but I think it's more of a device protocol thing. On an Arduino or ESP32 you can achieve the same functionality just by constructing the right byte array to write to the i2c or SPI device.