Usability of i2c of fl2k?

Torben Keil keil at keil-tech.de
Sat Jun 16 07:40:58 UTC 2018


Hi Steve,

do you have a git repository for the code so that I could have a try?


Regards,
Torben



Am 11.06.2018 22:57, schrieb Steve Markgraf:
> Hi Torben,
> 
> On 11.06.2018 22:15, Torben Keil wrote:
>> I tried to get a signal over the i2c interface but it wasn't 
>> sucsessful.
>> Do you have an idea how to enable the i2c interface on the fl2k chip?
> 
> I have some code sitting here, but when I wanted to clean it up
> recently, it didn't work anymore as expected. I'll need to debug it 
> with
> a logic analyzer. Note that the FL2000 can only do I2C transfers of a
> fixed length of 4 bytes, it was probably really only meant to read EDID
> EEPROMs.
> In the original driver, single register writes to the ITE HDMI 
> interface
> chip that some devices have are first reading 4 registers, then
> modifying the desired byte, and then writing them back.
> 
> Regards,
> Steve


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