FT4222 - Cannot set I2C Clock frequency to 100Kbps

[JVaughanPEL]

Currently I2cMasterFrequencyKbps is set by default to 400Kbps in Ft4222I2cBus.cs. For my application I require this to be set to 100Kbps but there is no method to change this value.

I would expected there to be a public method to set this value.

[Ellerbach]

We welcome PR and improvements. Feel free to propose something so that it can fit your needs.
Indeed speed from 60 to 3400 are supported. See: https://ftdichip.com/wp-content/uploads/2023/10/AN_329_User_Guide_for_LibFT4222-v1.7.pdf

So far, it's using a constant:

iot/src/devices/Ft4222/Ft4222I2cBus.cs

Line 21 in 41e17fb

private const uint I2cMasterFrequencyKbps = 400;

If you want, you want adjust to add a constructor with a default value with the constant. That should then work for your use case. Other ides welcome as well.