I believe that when connected to Android the IOIO-OTG works as USB host.
When connected to PC the IOIO-OTG works as a USB peripheral node (aka USB
>I'm using a usb-a connector on my board as I have no need for host mode
You are probably mixing things as the USB-A connector is for USB host and
USB-B is for device.
As you were able to connect IOIO to PC in bootloader mode then I think that
you actually have USB-B connector on your board (or mini-B, or micro-B).
You should not skip the host mode if you want to have communication with
On Wednesday, 7 June 2017 19:33:49 UTC+3, Guillaume Madore wrote:
> Hello all,
> so I've been working on a project that is IOIO based (new pcb but 100%
> IOIO based just with added components). I'm not an electronics expert so I
> had help designing it but the guy helping me just doesn't have much time
> anymore so I'm trying to finish it myself. It's almost done and I've
> soldered the main components to be able flash the PIC.
> I've bought a PICKit 3 and managed to flash the bootloader. I then was
> able to connect it to a pc in bootloader mode and flash the application
> firmware. The connection works well and I can see with the versions command
> that the bootloader and app seem ok.
> But the thing is, when I connect my board to an android device, it does
> charge it but my android app doesn't work/connect. The same device/app/usb
> cable were used with a IOIO Board and were working well. I've since bricked
> all my IOIOs so I can't really confirm 100% but I'd say 95% sure that the
> same setup would work on a IOIO. I'll probably end up buying another IOIO
> just to make sure everything does work...
> I'm no usb connection expert either but since I can connect it to a pc and
> update the application, I would guess that d+ and d- couldn't be mixed up?
> And since my device does say that it's charging, the 5v/gnd usb connections
> must be ok too?
> I'm using a usb-a connector on my board as I have no need for host mode.
> I've tried to pull up/pull down the usbid pin on the pic with a 10k res
> before connecting to android and it made no difference either. What would
> be my next logical thing to try?
> If any experts are interested, I'd be willing to pay you for consultation
> work to finish this thing...
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