Sending Function Keys using nrf52832 HID Keyboard

RE: Sending Function Keys using nrf52832 HID Keyboard

Håkon Alseth — Tue, 05 Mar 2019 08:05:14 GMT

Hi,

[quote user="xhr0428"]Is there any document to explain how report_map_data is determined?[/quote]

In BLE HID over GATT, the transport layer is closely coupled with USB HID. If you want to know more, I would recommend reading up on "usb descriptors" in general, on sites like "usb made simple" or "usb in a nutshell".

If you look at a USB descriptor, they have a usage, and that usage can be looked up in the previously linked document.

Kind regards,

Håkon

RE: Sending Function Keys using nrf52832 HID Keyboard

xhr0428 — Mon, 04 Mar 2019 22:03:16 GMT

Hello Hakon,

Do you have any example that works on nRF52 development board? The Example you linked seems to be for nRF51 board.

Is there any document to explain how report_map_data is determined?

Also where are the values for each control action from? I couldn't find them in the USB document.

typedef enum
	{
	RELEASE_KEY = 0x00,
	CONSUMER_CTRL_PLAY = 0x01,
	CONSUMER_CTRL_ALCCC = 0x02,
	CONSUMER_CTRL_SCAN_NEXT_TRACK = 0x04,
	CONSUMER_CTRL_SCAN_PREV_TRACK = 0x08,
	CONSUMER_CTRL_VOL_DW = 0x10,
	CONSUMER_CTRL_VOL_UP = 0x20,
	CONSUMER_CTRL_AC_FORWARD = 0x40,
	CONSUMER_CTRL_AC_BACK = 0x80,
	} consumer_control_t;

Thanks

RE: Sending Function Keys using nrf52832 HID Keyboard

Håkon Alseth — Mon, 04 Mar 2019 13:06:18 GMT

Hi,

Please see this document, page 55, for the usage table you're interested in:

https://www.usb.org/sites/default/files/documents/hut1_12v2.pdf

In order to send a given data stream, you can create a function similar to this one:

https://github.com/Rallare/nrf51_ble_app_hids_kbd_consumercontrol/blob/master/main.c#L1058

Kind regards,

Håkon