Description
Not able to get a touch feedback while using LVGL
What MCU/Processor/Board and compiler are you using?
Nrf5340 MCU, Custom board, RM69090 Display controller (QSPI), 320%360 AMOLED display. Zephyr RTOS with Nordic NCS (SDK) with built-in gcc tools)
NCS version: 1.5.1
LVGL version: ## v7.6.1 (06.10.2020)
Zephyr RTOS version: 2.4.99
What LVGL version are you using?
LVGL version: ## v7.6.1 (06.10.2020)
What do you want to achieve?
Just want to see touch getting detected
What have you tried so far?
The touch driver works I can detect touch (finger down, up, move etc.), get x,y coordinates outside of LVGL. when I integrate with LVGL, display works fine, my touch driver detects a touch but LVGL doesn’t.
Code to reproduce
Add a code snippet which can run in the simulator. It should contain only the relevant code that compiles without errors when separated from your main code base.
The code block(s) should be formatted like:
/*You code here*/
void btn_event_cb(lv_obj_t *btn, lv_event_t event) {
if (event == LV_EVENT_CLICKED) {
printf("Clicked\n");
}
}
void set_button(void) {
lv_obj_t *btn = lv_btn_create(lv_scr_act(), NULL); /*Add a button to the current screen*/
//lv_obj_set_pos(btn, 10, 10); /*Set its position*/
lv_obj_set_size(btn, 150, 100); /*Set its size*/
lv_obj_set_event_cb(btn, btn_event_cb); /*Assign a callback to the button*/
lv_obj_align(btn, NULL, LV_ALIGN_CENTER, 0, 60);
lv_obj_t *label = lv_label_create(btn, NULL); /*Add a label to the button*/
lv_label_set_text(label, "Next"); /*Set the labels text*/
}
/*Return true is the touchpad is pressed*/
static bool kbpro_lvgl_touchpad_is_pressed(void) {
return kbpro_touch_ztw622_event_status();
}
/*Get the x and y coordinates if the touchpad is pressed*/
static void kbpro_lvgl_touchpad_get_xy(lv_coord_t * x, lv_coord_t * y) {
(*x) = kbpro_touch_ztw622_get_x_coord();
(*y) = kbpro_touch_ztw622_get_y_coord();
}
/* Will be called by the LVGL library to read the touchpad */
static bool kbpro_lvgl_touchpad_read(lv_indev_drv_t * indev_drv, lv_indev_data_t * data)
{
static lv_coord_t last_x = 0;
static lv_coord_t last_y = 0;
/*Save the pressed coordinates and the state*/
if(kbpro_lvgl_touchpad_is_pressed()) {
kbpro_lvgl_touchpad_get_xy(&last_x, &last_y);
data->state = LV_INDEV_STATE_PR;
} else {
data->state = LV_INDEV_STATE_REL;
}
/*Set the last pressed coordinates*/
data->point.x = last_x;
data->point.y = last_y;
/*Return `false` because we are not buffering and no more data to read*/
return false;
}
/*
initialize lvgl input device driver (touch in our case)
*/
lv_indev_t * indev_touchpad;
lv_indev_drv_t indev_drv;
void kbpro_lvgl_indev_init(void) {
/*Initialize your touchpad if you have*/
#if KBPRO_ENABLE_TOUCH
kbpro_ztw622_touch_init();
kbpro_ztw622_touch_check_id();
#endif //KBPRO_ENABLE_TOUCH
/*Register a touchpad input device*/
lv_indev_drv_init(&indev_drv);
indev_drv.type = LV_INDEV_TYPE_POINTER;
indev_drv.read_cb = kbpro_lvgl_touchpad_read;
indev_touchpad = lv_indev_drv_register(&indev_drv);
if (!indev_touchpad) {
printk("\n kbpro_lvgl_indev_init FAIL");
}
}
Screenshot and/or video
If possible, add screenshots and/or videos about the current state.
