how to implement mouse click in nrf desktop

[mrd]

Hello,

I am looking at nrf desktop sample in ncs 2.4.2. I am using nrf52840dk and relevant files. My goal is to make composite usb/bt device mouse and keyboard work.

I see in src/hw_interface there is

-buttons_sim.c, which shows how to do keyboard keypresses.

-motion_buttons.c, which simulates mouse movement using buttons

1. Are my interpretations of these files correct?

2. Is there an example implementation where a mouse click is shown?

If not, could you give a small example for how to do this? The example I'm looking for should be end in APP_EVENT_SUBMIT()

An explanatory explanation of how to do it could also suffice.

Eg. for mouse movement, it is very simple

void mouse_movement_send(int8_t x, int8_t y)

{

    struct motion_event *event = new_motion_event();

    event->dx = x;

    event->dy = y;

    APP_EVENT_SUBMIT(event);

}

Thank you!

[mrd]

It's working.

I ended up adding more items to the hid_keymap in hid_keymap_def_keyboard.h.

A critical piece is a different first index in KEY_ID to allow it to coexist with the keyboard definitions.

    //Other keyboard definitions above...
    { KEY_ID(0x00, 0x1B), 0x001B, REPORT_ID_KEYBOARD_KEYS }, /* X */
    { KEY_ID(0x00, 0x1C), 0x001C, REPORT_ID_KEYBOARD_KEYS }, /* Y */
    { KEY_ID(0x00, 0x1D), 0x001D, REPORT_ID_KEYBOARD_KEYS }, /* Z */

//New mouse definitions. Note new major index
    { KEY_ID(0x01, 0x00), 0x01, REPORT_ID_MOUSE }, /* Left Mouse Button */
    { KEY_ID(0x01, 0x01), 0x02, REPORT_ID_MOUSE }, /* Right Mouse Button */
    { KEY_ID(0x01, 0x02), 0x03, REPORT_ID_MOUSE }, /* Middle Mouse Button */

You need to redefine the KEY_IDs in a place that's visible or accessible to the sender. There's definitely a cleaner way to do this, I'm just happy it's working for now.

const static uint16_t mouse_click_keys[] = {

    KEY_ID(0x01, 0x00), /* LMB */

    KEY_ID(0x01, 0x01), /* RMB */

    KEY_ID(0x01, 0x02), /* MMB */

};

My send function:

        struct button_event *event = new_button_event();

        event->key_id = mouse_click_keys[MOUSE_BTN_IDX_LEFT];

        event->pressed = down;

        APP_EVENT_SUBMIT(event);

[David_S_T_R_E_A_M]

Hello man can you help me with move moving.I saw one person on YouTube transmitting native mouse move events through CrazyRadio PA. I'm a newbie and tried to find in the doc how to do this, but didn't understand anything. Maybe you can answer me here or in a telegram, here is my nickname dag2134