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USB device port problems #10

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3 tasks done
renzenicolai opened this issue Jun 15, 2024 · 2 comments
Open
3 tasks done

USB device port problems #10

renzenicolai opened this issue Jun 15, 2024 · 2 comments
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@renzenicolai
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renzenicolai commented Jun 15, 2024 •
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BQ25895 power negotiation is faulty and causes issues.

If we disable the power negotiation the vbus line of the usb port will always be 5v and thus it will be usable to power the usb hub directly.

  • Disconnect D+/D- from the BQ25895
  • Disconnect reset of USB hub from DSEL
  • Connect V5 pin of USB hub to USB_VBUS
@renzenicolai renzenicolai added the bug Something isn't working label Jun 15, 2024
@ranzbak
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ranzbak commented Jul 27, 2024

Put solder jumper in place, so the USB data lines are disconnected by default but can used when debugging.

@renzenicolai
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In the end I just removed the USB port pins of the CH32. The usb serial converter idea of @ranzbak is much better so let's go with that.

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@ranzbak @renzenicolai