USB-C CC pins are pulled to the GND by AW3512 (VCONN switches) when VCONN is off
(06-18-2020, 01:04 AM)fsflover Wrote:That's a PinePhone with a HW fix in the video.(06-17-2020, 10:50 PM)Subsentient Wrote: Well f*ck. So the mod is mandatory if you intend to use USB OTG. That's depressing. I'll stay happy enough with my BraveHeart since I finished the mod, but it's sad that it's necessary. I suppose something like this was bound to happen with the first ever open source phone made of mostly regular phone parts. I'm not going to bother with the smaller power drain bug. My phone is never off anyway, and if I need to store it for extended periods I can just stick some plastic wrap around the battery contacts or something, not worth damaging the board for such a small bug.
It seems you still can use OTG: https://www.youtube.com/watch?v=yBeza4UNOm8. Or is this something else?
(06-18-2020, 05:39 AM)heng Wrote: https://xnux.eu/devices/pine64-pinephone...-pinephone: "It's not fixable in SW, other than via a manual selection of power and data roles by the user." So we can use software to manually switch from charging to OTG, right?Locally, yes. The other side of the cable will have no way of knowing, aside from seeing vbus power up.
It may or may not work with simple devices like usb-c hubs, but it's risky with usb-c docks with PD inputs, power/data role switching, which is all signalled over CC pins.