How add USB into NCS central_hids project?

[gandyhuang]

HI,

I am using the central_hids project in NCS V1.5.1 on NRF52840 , and now i want to add USB hid into the project, how can i do it?

I have try to do it in nrf_desktop dongle, but it has too much code that i do not need, and i want to learn how add the usb into project.

thanks

[Einar Thorsrud]

Hi,

I suggest you look at this for an example of a simpler USB HID device.

[gandyhuang]

hi,

I has add USB successful,  and i can send A by USB to PC slowly is ok(100ms interval); but when i send it every 4ms, USB will be alway busy(ep_ctx->write_in_progress alway is true),new data can't not be fill into usb buffer as below; how fast can it fill the data into USB?