Keypad input integration

[everedero]

Hi! I have been using the 2048 app with Zephyr RTOS on a board with keypad buttons.

In order to make it work, I had to add an object group (lv_group_t ), as mentionned in LVGL Readme . Then I put the 2048 button matrix in it:

lv_group_add_obj(btn_matrix_group, game_2048->btnm);

and then link it to the keypad input object:

lv_indev_set_group(lvgl_input_get_indev(lvgl_keypad), btn_matrix_group);

The whole commit is here.

Do you think it could be missing in your lvgl port too?

[100ask]

hi,

You need to register your input device. For 2048 games, you need to register keypads:

static lv_indev_drv_t keypad_driver;
lv_indev_drv_init(&keypad_driver);      /*Basic initialization*/
keypad_driver.type =LV_INDEV_TYPE_KEYPAD;                 /*See below.*/
keypad_driver.read_cb =you_read_cb ;             /*See below.*/
/*Register the driver in LVGL and save the created input device object*/
lv_indev_t * keypad_indev = lv_indev_drv_register(&keypad_driver);

Then:

lv_group_t * g = lv_group_create();
lv_group_set_default(g);
lv_indev_set_group(keypad_indev, g);

Reference:

• https://gitee.com/weidongshan/lvgl_100ask_course_materials/blob/master/02_%E7%A8%8B%E5%BA%8F%E6%BA%90%E7%A0%81/01_%E8%AF%BE%E5%A0%82%E4%BB%A3%E7%A0%81/lv_100ask_teach_demos/src/lv_100ask_demo_course_3_3_1/lv_100ask_demo_course_3_3_1.c#L48
• https://docs.lvgl.io/8.3/porting/indev.htmlhttps://docs.lvgl.io/8.3/overview/indev.html
• https://docs.lvgl.io/8.3/overview/indev.html