USB HID Report Descriptor limit

[mstumbra]

After switching to SDK 15 from SDK 14, stopped working correctly transmission of HID Report Descriptor over USB, what in case leads to incorrect device enumeration.

Now for some reason in file "app_usbd_hid.c" function "setup_req_std_in" fails assert "ASSERT(report_size <= max_size);" as max_size defined as "#define NRF_DRV_USBD_EPSIZE 64"

So now max report descriptor size is limited to 64 bytes. Is there a way to overcome it?

(NRF52840)

[Håkon Alseth]

Hello,

 

I am sorry for the long wait. This is a clear bug from our side, and I apologize for this.

This assert line shall be removed/commented out in order for app_usbd_hid to accept HID descriptors > 64 bytes.

 

Kind regards,

Håkon