#141 New hardware option for i2c access

[Matthias S. Benkmann]

The i2cdriver (https://i2cdriver.com/) is a readily available tool for debugging an I2C bus. I recently implemented a compatibility layer to provide a Linux /dev/i2c-... interface. It can be found here:
https://github.com/mbenkmann/i2cdriver/tree/master/c/linux

I just verified that it works with stm32flash. I think it would be useful to include the above links in I2C.txt to help those looking for a an affordable device they can use with stm32flash on Linux.

[Tormod Volden]

Looks good. Can we expect your interface layer to go upstream, so we can link to one place?

I saw there is a KiCAD design file, do you know if there is a BOM somewhere?

We should also mention the https://github.com/daniel-thompson/i2c-star (runs on typical STM32 dev boards) or the original i2c-tiny-usb, which both have Linux kernel support out of the box.

[Tormod Volden]

I have added links in I2C.txt.