ESP32_C6_THREAD thrown an ArgumentException at I2cDevice for busId = 2

[romankiss]

Target name(s)

ESP32_C6_THREAD

Firmware version

all versions

Was working before? On which version?

none

Device capabilities

No response

Description

There is an issue at creating the I2cDevice for busId = 2. It looks like there is missing a driver for LP I2C controller.

The following exception is thrown:

++++ Exception System.ArgumentException - 0xfd000000 (1) ++++
++++ Message:
++++ System.Device.I2c.I2cDevice::NativeInit [IP: 0000] ++++
++++ System.Device.I2c.I2cDevice::.ctor [IP: 001c] ++++
Exception thrown: 'System.ArgumentException' in System.Device.I2c.dll

How to reproduce

Configuration.SetPinFunction(14, DeviceFunction.I2C2_DATA);
Configuration.SetPinFunction(15, DeviceFunction.I2C2_CLOCK);
I2cDevice i2c_sht = new(new I2cConnectionSettings(2, Sht4X.I2cDefaultAddress)); // <= thrown exception

Expected behaviour

No response

Screenshots

No response

Aditional information

No response

[AdrianSoundy]

The issue here is the 2nd I2C port is a low power port which isn't supported in the legacy I2C API we are using.
To use this I2C port we would need to do following:

1. Update I2C driver to use the new I2C driver API
2. Update ESP32 build to use espressif IDF 5.3 as LP_I2C is not supported in current IDF