nRF52840 USBD set up report feature

[Vy Vy]

Hello,

With nRF52840, I using SDK ver.16 to create a USB HID multiple touchscreen.
I need to set up value some HID feature report. Such as Contact count maximum.
I have followed peripheral/usbd_hid_generic example, but this not mention.
Is there any example to guide how to do it?
This is feature report descriptor

/* FEATURE REPORT ID Max Contact */                                              \
    0x85, FEATURE_REP_MCONT_ID,    /*   REPORT_ID(3)                              */ \
    0x09, 0x55,                    /*   USAGE(Contact Count Maximum)              */ \
    0x25, 0x0A,                    /*   LOGICAL_MAXIMUM (10)                      */ \
    0x75, 0x08,                    /*   REPORT_SIZE (8)                           */ \
    0x95, 0x01,                    /*   REPORT_COUNT(1)                           */ \
    0xB1, 0x02,                    /*   FEATURE (Data,Var,Abs)                    */ \

Thanks.

[Simonr]

Hi

We don't have an official example doing this, but you should be able to use the example provided by Torbjrn in this case (your previous case) where I.E. Contact count is added to the report descriptor along other things.

Best regards,

Simon

[Vy Vy]

Hi

Thanks for your's answer.
But those are two different cases.
This case is USBD HID, set and transfer to host the feature_report value after define report descriptor.

I used app_usbd_hid_generic_in_report_set () to send the input_report buffer, it succeeded.
Does this function also pass the feature_report buffer?
If yes, when should I execute, after APP_USBD_EVT_STARTED event?

Vy

[Simonr]

Okay, sorry about the misunderstanding. Feature reports in USB HID have also been discussed earlier here on the DevZone, and I suggest you check out this thread for more information where it is discussed and explained in detail. Also check out this USBD example adding a second HID interface and custom HID descriptor.

Best regards,

Simon