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Published 20 hours ago • verified publisher icon hathach

N-Key-Rollover

Open LuggaFiech opened this issue 2 years ago • 2 comments

Related area

No NKRO possible with tinyusb?

Hardware specification

rp2040 feather

Is your feature request related to a problem?

I‘m currently facing the issue that I am unable to get N key rollover to work. If there is any way to do it currently please tell me.

Describe the solution you'd like

I don‘t know any solution.

I have checked existing issues, dicussion and documentation

  • [X] I confirm I have checked existing issues, dicussion and documentation.

LuggaFiech avatar Dec 21 '22 09:12 LuggaFiech

NKRO support really has to do with your HID report descriptor, and is not a TinyUSB issue. There's an example of NKRO in CircuitPython here: https://learn.adafruit.com/custom-hid-devices-in-circuitpython/n-key-rollover-nkro-hid-device. CircuitPython uses TinyUSB internally.

dhalbert avatar Dec 21 '22 14:12 dhalbert

What about in the case of using TinyUSB as a host device reading a HID keyboard? Appears the built-in support is for hid keyboard boot mode which reports only 6 keys. From what I understand there is a command that must be sent to a keyboard from a host device to enable full NKRO mode. Is this correct and are there any known examples?

RobertDaleSmith avatar Sep 01 '23 19:09 RobertDaleSmith