Updated about suggestions.

bsp/nuvoton/libraries/n9h30/rtt_port/drv_adc_touch.c

@@ -216,10 +216,15 @@ static void adc_touch_entry(void *parameter)
                     || touch_point.event == RT_TOUCH_EVENT_UP
                     || touch_point.event == RT_TOUCH_EVENT_MOVE)
             {
-#if defined(PKG_USING_LITTLEVGL2RTT) || defined(PKG_USING_LVGL)
+
+#if defined(PKG_USING_LVGL)
+                extern void nu_touch_inputevent_cb(rt_int16_t x, rt_int16_t y, rt_uint8_t state);
+                nu_touch_inputevent_cb(touch_point.x_coordinate, touch_point.y_coordinate, touch_point.event);
+#elif defined(PKG_USING_LITTLEVGL2RTT)
                 extern void littlevgl2rtt_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state);
                 littlevgl2rtt_send_input_event(touch_point.x_coordinate, touch_point.y_coordinate, touch_point.event);
 #endif
+
 #if defined(PKG_USING_NUEMWIN)
                 extern void nuemwin_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state);
                 nuemwin_send_input_event(touch_point.x_coordinate, touch_point.y_coordinate, touch_point.event);

bsp/nuvoton/nk-980iot/applications/lvgl/port/lv_demo.c

@@ -9,17 +9,16 @@
  */
 #include <rtthread.h>
 #include <lvgl.h>
-#include <lv_port_indev.h>
 #define DBG_TAG    "LVGL"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
 #ifndef LV_THREAD_STACK_SIZE
-    #define LV_THREAD_STACK_SIZE 10240
+    #define LV_THREAD_STACK_SIZE 4096
 #endif
 
 #ifndef LV_THREAD_PRIO
-    #define LV_THREAD_PRIO 20
+    #define LV_THREAD_PRIO (RT_THREAD_PRIORITY_MAX*2/3)
 #endif
 
 static void lvgl_thread(void *parameter)

bsp/nuvoton/nk-980iot/applications/lvgl/port/lv_port_disp.c

@@ -5,7 +5,7 @@
  *
  * Change Logs:
  * Date           Author       Notes
- * 2021-12-17     Wayne       The first version
+ * 2021-12-17     Wayne        The first version
  */
 #include <lvgl.h>
 
@@ -51,6 +51,7 @@ void lv_port_disp_init(void)
 {
     rt_err_t result;
     void *buf_1 = RT_NULL;
+    void *buf_2 = RT_NULL;
 
     lcd_device = rt_device_find("lcd");
     if (lcd_device == 0)
@@ -72,10 +73,11 @@ void lv_port_disp_init(void)
               info.bits_per_pixel == 24 || info.bits_per_pixel == 32);
 
     buf_1 = (void *)info.framebuffer;
-    rt_kprintf("lv buf_1=%08x\n", buf_1);
+    buf_2 = (void *)((uint32_t)buf_1 + info.height * info.width * info.bits_per_pixel / 8);
+    rt_kprintf("LVGL: Use two buffers - buf_1@%08x, buf_2@%08x\n", buf_1, buf_2);
 
     /*Initialize `disp_buf` with the buffer(s).*/
-    lv_disp_draw_buf_init(&disp_buf, buf_1, NULL, info.width * info.height);
+    lv_disp_draw_buf_init(&disp_buf, buf_1, buf_2, info.width * info.height);
 
     result = rt_device_open(lcd_device, 0);
     if (result != RT_EOK)
@@ -89,7 +91,6 @@ void lv_port_disp_init(void)
     /*Set the resolution of the display*/
     disp_drv.hor_res = info.width;
     disp_drv.ver_res = info.height;
-    //disp_drv.full_refresh = 1;
 
     /*Set a display buffer*/
     disp_drv.draw_buf = &disp_buf;

bsp/nuvoton/nk-980iot/applications/lvgl/port/lv_port_indev.c

@@ -6,6 +6,7 @@
  * Change Logs:
  * Date           Author       Notes
  * 2021-10-18     Meco Man     The first version
+ * 2021-12-17     Wayne        Add input event
  */
 #include <lvgl.h>
 #include <stdbool.h>
@@ -23,7 +24,7 @@ static void input_read(lv_indev_drv_t *indev_drv, lv_indev_data_t *data)
     data->state = last_state;
 }
 
-void littlevgl2rtt_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state)
+void nu_touch_inputevent_cb(rt_int16_t x, rt_int16_t y, rt_uint8_t state)
 {
     switch (state)
     {
@@ -42,17 +43,15 @@ void littlevgl2rtt_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state
     }
 }
 
-
-lv_indev_t *button_indev;
-
 void lv_port_indev_init(void)
 {
     static lv_indev_drv_t indev_drv;
 
-    lv_indev_drv_init(&indev_drv);      /*Basic initialization*/
+    /* Basic initialization */
+    lv_indev_drv_init(&indev_drv);
     indev_drv.type = LV_INDEV_TYPE_POINTER;
     indev_drv.read_cb = input_read;
 
-    /*Register the driver in LVGL and save the created input device object*/
-    button_indev = lv_indev_drv_register(&indev_drv);
+    /* Register the driver in LVGL and save the created input device object */
+    lv_indev_drv_register(&indev_drv);
 }

bsp/nuvoton/nk-n9h30/applications/lvgl/port/lv_demo.c

@@ -9,17 +9,16 @@
  */
 #include <rtthread.h>
 #include <lvgl.h>
-#include <lv_port_indev.h>
 #define DBG_TAG    "LVGL"
 #define DBG_LVL    DBG_INFO
 #include <rtdbg.h>
 
 #ifndef LV_THREAD_STACK_SIZE
-    #define LV_THREAD_STACK_SIZE 10240
+    #define LV_THREAD_STACK_SIZE 4096
 #endif
 
 #ifndef LV_THREAD_PRIO
-    #define LV_THREAD_PRIO 20
+    #define LV_THREAD_PRIO (RT_THREAD_PRIORITY_MAX*2/3)
 #endif
 
 static void lvgl_thread(void *parameter)
@@ -34,7 +33,7 @@ static void lvgl_thread(void *parameter)
     }
 }
 
-static int lvgl_demo(void)
+static int lvgl_demo_init(void)
 {
     rt_thread_t tid;
 
@@ -47,5 +46,4 @@ static int lvgl_demo(void)
 
     return 0;
 }
-INIT_APP_EXPORT(lvgl_demo);
-//MSH_CMD_EXPORT(lvgl_demo, start lvgl music demo);
+INIT_APP_EXPORT(lvgl_demo_init);

bsp/nuvoton/nk-n9h30/applications/lvgl/port/lv_port_disp.c

@@ -94,10 +94,8 @@ void lv_port_disp_init(void)
               info.bits_per_pixel == 24 || info.bits_per_pixel == 32);
 
     buf_1 = (void *)info.framebuffer;
-    rt_kprintf("lv buf_1=%08x\n", buf_1);
-
-    buf_2 = (void *)((uint32_t)info.framebuffer + info.height * info.width * info.bits_per_pixel / 8);
-    rt_kprintf("lv buf_2=%08x\n", buf_2);
+    buf_2 = (void *)((uint32_t)buf_1 + info.height * info.width * info.bits_per_pixel / 8);
+    rt_kprintf("LVGL: Use two buffers - buf_1@%08x, buf_2@%08x\n", buf_1, buf_2);
 
     /*Initialize `disp_buf` with the buffer(s).*/
     lv_disp_draw_buf_init(&disp_buf, buf_1, buf_2, info.width * info.height);

bsp/nuvoton/nk-n9h30/applications/lvgl/port/lv_port_indev.c

@@ -24,7 +24,7 @@ static void input_read(lv_indev_drv_t *indev_drv, lv_indev_data_t *data)
     data->state = last_state;
 }
 
-void littlevgl2rtt_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state)
+void nu_touch_inputevent_cb(rt_int16_t x, rt_int16_t y, rt_uint8_t state)
 {
     switch (state)
     {
@@ -43,17 +43,15 @@ void littlevgl2rtt_send_input_event(rt_int16_t x, rt_int16_t y, rt_uint8_t state
     }
 }
 
-
-lv_indev_t *button_indev;
-
 void lv_port_indev_init(void)
 {
     static lv_indev_drv_t indev_drv;
 
-    lv_indev_drv_init(&indev_drv);      /*Basic initialization*/
+    /* Basic initialization */
+    lv_indev_drv_init(&indev_drv);
     indev_drv.type = LV_INDEV_TYPE_POINTER;
     indev_drv.read_cb = input_read;
 
-    /*Register the driver in LVGL and save the created input device object*/
-    button_indev = lv_indev_drv_register(&indev_drv);
+    /* Register the driver in LVGL and save the created input device object */
+    lv_indev_drv_register(&indev_drv);
 }