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That sounds awesome! Have you ended up using this DDC library? https://www.arduinolibraries.info/libraries/ddc-ci-vpc-library https://www.arduinolibraries.info/

by alin23 4y ago

That sounds awesome! Have you ended up using this DDC library? https://www.arduinolibraries.info/libraries/ddc-ci-vpc-library https://www.arduinolibraries.info/libraries/ddc-ci-vpc-libra... Or did you end up coding your own raw I2C implementation?

byt3swap 4y ago
My own implementation. I actually started writing a more full featured DDC library with things like capability scanning on the roadmap. I should have some time next month to potentially get back to it. A lot of what was available seemed to be Arduino based with Arduino specific calls in the libraries. I'm using standard ESP32 libs/build system and am trying to keep this one generic.
- alin23 4y ago
  Whoa that sounds even more awesome.. or awesomer? I hope I’m not stepping over the line, but if it’s not already open source, would you be willing to send me a source code tarball? I’d love to prototype a DIY solution with it for the people having trouble with DDC on DisplayLink connected monitors. My email is on my HN user page in the About section.
  - byt3swap 4y ago
    I wouldn't mind if there was a bit more there. There is only the beginnings of the library (headers w/ DDC register map, function prototypes, etc), and I was still in the process of figuring out the architecture of the thing when I ran out of time to work on it. That being said I would be more than happy to get back to you if I am indeed able to get some more of the groundwork done on it next month as my schedule frees up. I maybe could have been clearer on this, but the DDC dongle I made isn't using this library, just hardcoded i2c calls for input switching. I started working on the library to eventually integrate with that dongle, but I'm still using the 'hacky' firmware on the dongles hooked to my monitors.
    - alin23 4y ago
      Got it! Then I’d be happy if you could let me know if you ever open source it :) it’s something really missing from the ESP32 space
      - byt3swap 4y ago
        I definitely will!

by alin23 4y ago

byt3swap 4y ago

My own implementation. I actually started writing a more full featured DDC library with things like capability scanning on the roadmap. I should have some time next month to potentially get back to it. A lot of what was available seemed to be Arduino based with Arduino specific calls in the libraries. I'm using standard ESP32 libs/build system and am trying to keep this one generic.

alin23 4y ago
Whoa that sounds even more awesome.. or awesomer? I hope I’m not stepping over the line, but if it’s not already open source, would you be willing to send me a source code tarball? I’d love to prototype a DIY solution with it for the people having trouble with DDC on DisplayLink connected monitors. My email is on my HN user page in the About section.
- byt3swap 4y ago
  I wouldn't mind if there was a bit more there. There is only the beginnings of the library (headers w/ DDC register map, function prototypes, etc), and I was still in the process of figuring out the architecture of the thing when I ran out of time to work on it. That being said I would be more than happy to get back to you if I am indeed able to get some more of the groundwork done on it next month as my schedule frees up. I maybe could have been clearer on this, but the DDC dongle I made isn't using this library, just hardcoded i2c calls for input switching. I started working on the library to eventually integrate with that dongle, but I'm still using the 'hacky' firmware on the dongles hooked to my monitors.
  - alin23 4y ago
    Got it! Then I’d be happy if you could let me know if you ever open source it :) it’s something really missing from the ESP32 space
    - byt3swap 4y ago
      I definitely will!