hi,
here's a question/issue, which, I suppose, is about iOS rather than teensy: i'm having trouble to get two of my projects recognized as a usb device on an ipad (ipad pro 2017, iOS 12.0, apple camera connection kit). both work fine with a regular/proper computer (macbook pro).
the one is a custom MK20/audio device, the other a midi device with a regular teensy 3.2 attached. being eurorack modules, they're both powered by their own +12V/-12V PSUs, so i didn't connect V_USB, just gnd, d+, and d- ... which seems to be the problem. at least, there seems to be no problem getting a teensy 3.2 (or 3.6) registered as a midi/audio usb-device as long as it receives 5V on the V_USB bus, from the ipad.
what's weird is that the modules _used_ to work with iOS, despite the missing V_USB (that is, with previous versions of iOS). so i guess my question is: is it possible that the iOS developers changed the requirements in this regard?
thanks in advance (in case anyone had any insights ...)
here's a question/issue, which, I suppose, is about iOS rather than teensy: i'm having trouble to get two of my projects recognized as a usb device on an ipad (ipad pro 2017, iOS 12.0, apple camera connection kit). both work fine with a regular/proper computer (macbook pro).
the one is a custom MK20/audio device, the other a midi device with a regular teensy 3.2 attached. being eurorack modules, they're both powered by their own +12V/-12V PSUs, so i didn't connect V_USB, just gnd, d+, and d- ... which seems to be the problem. at least, there seems to be no problem getting a teensy 3.2 (or 3.6) registered as a midi/audio usb-device as long as it receives 5V on the V_USB bus, from the ipad.
what's weird is that the modules _used_ to work with iOS, despite the missing V_USB (that is, with previous versions of iOS). so i guess my question is: is it possible that the iOS developers changed the requirements in this regard?
thanks in advance (in case anyone had any insights ...)