Zack Freedman

Forum Replies Created

Viewing 2 posts - 1 through 2 (of 2 total)
  • Author
    Posts
  • September 8, 2015 at 3:40 pm in reply to: GPIO11/GPIO12 Low Voltage #9117
    Zack Freedman
    Participant

    More testing shows that GPIO11 and 12 sag when driving anything with more than 40kΩ input impedance. Is there any way to increase this? 83µA drive strength is excessively low.

    September 8, 2015 at 2:49 pm in reply to: GPIO11/GPIO12 Low Voltage #9116
    Zack Freedman
    Participant

    I just tested again with a similar module in the OEM devboard, and it seems to be outputting the correct logic levels.

    Are specifications available for the drive strength or other electrical parameters of the GPIO pins? Could userspace or kernel-level code be accidentally switching them into a high-impedance input mode?

  • Author
    Posts
Viewing 2 posts - 1 through 2 (of 2 total)