More debug UI

source/main.c

@@ -11,6 +11,7 @@ static lv_obj_t * cursor;
 static lv_obj_t * label;
 static lv_obj_t * label2;
 static lv_obj_t * fps_label;
+static lv_obj_t * keypad_label;
 
 
 long unsigned int sys_tick(void)
@@ -30,20 +31,18 @@ void sys_free(void)
     gfxExit();
 }
 
-static void cursor_timer_cb(lv_timer_t * t)
+static void ui_timer_cb(lv_timer_t * t)
 {
     LV_UNUSED(t);
     
     lv_indev_t * indev = lv_indev_get_next(NULL);
     
-    if (!indev)
-        return;
-
+    while (indev) {
+        if (lv_indev_get_type(indev) == LV_INDEV_TYPE_POINTER) {
             lv_point_t p;
             lv_indev_get_point(indev, &p);
 
             if (lv_indev_get_state(indev) == LV_INDEV_STATE_PRESSED) {
-
                 lv_obj_set_pos(cursor, p.x - 5, p.y - 5);
                 lv_obj_clear_flag(cursor, LV_OBJ_FLAG_HIDDEN);
 
@@ -55,6 +54,49 @@ static void cursor_timer_cb(lv_timer_t * t)
             else {
                 lv_obj_add_flag(cursor, LV_OBJ_FLAG_HIDDEN);
             }
+        }
+        if (lv_indev_get_type(indev) == LV_INDEV_TYPE_KEYPAD) {
+            uint32_t key = lv_indev_get_key(indev);
+            uint32_t state = lv_indev_get_state(indev);
+            const char * txt = "None";
+
+            switch(key) {
+                case LV_KEY_UP:
+                    txt = "UP";
+                    break;
+                case LV_KEY_DOWN:
+                    txt = "DOWN";
+                    break;
+                case LV_KEY_LEFT:
+                    txt = "LEFT";
+                    break;
+                case LV_KEY_RIGHT:
+                    txt = "RIGHT";
+                    break;
+                case LV_KEY_ENTER:
+                    txt = "A";
+                    break;
+                case LV_KEY_ESC:
+                    txt = "B";
+                    break;
+                case LV_KEY_PREV:
+                    txt = "L";
+                    break;
+                case LV_KEY_NEXT:
+                    txt = "R";
+                    break;
+                default:
+                    txt = "None";
+                    break;
+            }
+
+            if (state == LV_INDEV_STATE_PRESSED)
+                lv_label_set_text_fmt(keypad_label, "Pressed: %s", txt);
+            else
+                lv_label_set_text_fmt(keypad_label, "Released", txt);
+        }
+        indev = lv_indev_get_next(indev);
+    }
 }
 
 static void switch_event_cb(lv_event_t * e)
@@ -131,6 +173,10 @@ static void ui_prepare(void)
     label2 = lv_label_create(lv_screen_active());
     lv_obj_align(label2, LV_ALIGN_TOP_LEFT, 4, 4);
     
+    /* Keypad label */
+    keypad_label = lv_label_create(lv_screen_active());
+    lv_obj_align(keypad_label, LV_ALIGN_TOP_LEFT, 4, 36);
+    
     /* FPS label */
     fps_label = lv_label_create(lv_screen_active());
     lv_obj_align(fps_label,
@@ -139,7 +185,11 @@ static void ui_prepare(void)
         -4);
     
     /* Main loop UI update timer */
-    lv_timer_create(cursor_timer_cb, 16, NULL);
+    lv_timer_create(ui_timer_cb, 16, NULL);
+    
+    /* Dummy group to make indev happy */
+    lv_group_t * group = lv_group_create();
+    lv_indev_set_group(lv_ctr_indev_get_keypad(), group);
     
     lv_obj_invalidate(lv_screen_active());
 }
@@ -157,13 +207,16 @@ int main(int argc, char* argv[])
     // Main loop
     while (aptMainLoop())
     {
+        // scan HID inputs
+        hidScanInput();
+
+        // call LVGL timer handler
         u64 start = osGetTime();
         lv_timer_handler();
         u64 end = osGetTime();
         lv_label_set_text_fmt(fps_label, "render: %llums", end - start);
 
-        hidScanInput();
-
+        // evacuate the dance floor!
         u32 kDown = hidKeysDown();
         if (kDown & KEY_START)
             break; // break in order to return to hbmenu