USB HID Keyboard Fail.(USB HID device is not ready)

RE: USB HID Keyboard Fail.(USB HID device is not ready)

qianjunwang — Tue, 13 May 2025 11:03:16 GMT

Hi，

I attempted the method mentioned earlier, but unfortunately, it did not yield the desired results. However, I made some modifications to the printing method by using RTT and connected it to another USB interface. Now, the display shows the following information...

RE: USB HID Keyboard Fail.(USB HID device is not ready)

Kenneth — Mon, 12 May 2025 13:16:53 GMT

Hello,

I can't find any other cases than the one you linked, so it's difficult to theorize what can be the problem here. Did you try what the other case said? E.g. did you do an eraseall/recover before programming the updated sample? and did you unplug and plugin the USB afterwards (in other words a full power cycle of the nRF52840)?

Kenneth

RE: USB HID Keyboard Fail.(USB HID device is not ready)

qianjunwang — Mon, 12 May 2025 08:48:25 GMT

Do I need to add the 4 overlays？