USB Hid Keyboard - When is it ready to transfer?

RE: USB Hid Keyboard - When is it ready to transfer?

nine-fox — Fri, 22 Feb 2019 15:43:03 GMT

My current thought is that, since all operating system OS will send SET_IDLE after usb enumeration. Can we just use this signal to start sending data?

RE: USB Hid Keyboard - When is it ready to transfer?

nine-fox — Fri, 22 Feb 2019 15:39:07 GMT

Hi Sigurd, thanks for your answer. However, the investigation shows that, no APP_USBD_HID_USER_EVT_OUT_REPORT_READY event under MAC OS. While Windows works well, may I ask is there any other way to test?

Thanks,

Vincent

RE: USB Hid Keyboard - When is it ready to transfer?

Sigurd — Thu, 23 Aug 2018 14:54:44 GMT

Hi Anton,

Note that if you are using the latest revision of the nRF52840, there are some erratas that has not been properly applied in our SDK;please see this thread.

Br,

Sigurd

RE: USB Hid Keyboard - When is it ready to transfer?

AntonHellbe — Wed, 22 Aug 2018 14:54:33 GMT

Hi Sigurd,

Thanks for the answer, we will try it out and see if it works.

Br,
Anton

RE: USB Hid Keyboard - When is it ready to transfer?

Sigurd — Wed, 22 Aug 2018 09:24:36 GMT

Hi,

I assume that you are testing the usbd_hid_composite example.

[quote userid="73389" url="~/f/nordic-q-a/37578/usb-hid-keyboard---when-is-it-ready-to-transfer"]Are there any other flags or event handlers that can be useful to detect when the USBD is ready to transmit?[/quote]

You should be able to send the key after you get the first APP_USBD_HID_USER_EVT_OUT_REPORT_READY event in the hid_kbd_user_ev_handler().