[BSP][LVGL]An adaptation that creates a buffer in high or low versions

Author: hydevcode

bsp/stm32/stm32f407-rt-spark/board/ports/lvgl/lv_conf.h

@@ -14,7 +14,6 @@
 #include <rtconfig.h>
 
 #define LV_COLOR_DEPTH          16
-#define LV_USE_PERF_MONITOR     1
 #define MY_DISP_HOR_RES          240
 #define MY_DISP_VER_RES          240
 //#define LV_USE_LOG              1
@@ -31,13 +30,13 @@
 
 #endif
 
-
+#define LV_USE_SYSMON 1
+#define LV_USE_PERF_MONITOR     1
+#define LV_USE_DEMO_WIDGETS         1
+#define LV_FONT_MONTSERRAT_24 1
 #define LV_USE_DEMO_BENCHMARK       1
 
 
-//#define LV_USE_DEMO_WIDGETS         1
-
-
 //#define LV_USE_DEMO_MUSIC           1
 
 #endif

bsp/stm32/stm32f407-rt-spark/board/ports/lvgl/lv_port_disp.c

@@ -26,6 +26,16 @@
     #define MY_DISP_VER_RES    240
 #endif
 
+#define BYTE_PER_PIXEL (LV_COLOR_FORMAT_GET_SIZE(LV_COLOR_FORMAT_RGB565)) /*will be 2 for RGB565 */
+
+#if (PKG_LVGL_VER_NUM >= 0x0803FF)
+    #define LV_DISP_TYPE   lv_display_t 
+    #define lv_COLOR_TYPE  uint8_t
+#else
+    #define LV_DISP_TYPE   lv_disp_drv_t 
+    #define lv_COLOR_TYPE lv_color_t
+#endif
+
 /**********************
  *      TYPEDEFS
  **********************/
@@ -35,7 +45,7 @@
  **********************/
 static void disp_init(void);
 
-static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p);
+static void disp_flush(LV_DISP_TYPE * disp_drv, const lv_area_t * area, lv_COLOR_TYPE * color_p);
 //static void gpu_fill(lv_disp_drv_t * disp_drv, lv_color_t * dest_buf, lv_coord_t dest_width,
 //        const lv_area_t * fill_area, lv_color_t color);
 
@@ -83,9 +93,6 @@ void lv_port_disp_init(void)
      *      and you only need to change the frame buffer's address.
      */
 
-    /* Example for 1) */
-    static lv_disp_draw_buf_t draw_buf_dsc_1;
-
     /*GCC*/
 #if defined ( __GNUC__ )
     static lv_color_t buf_1[MY_DISP_HOR_RES * MY_DISP_HOR_RES / 2] __attribute__((section(".LVGLccm")));                          /*A buffer for 10 rows*/
@@ -94,11 +101,26 @@ void lv_port_disp_init(void)
     __attribute__((at(0x10000000))) lv_color_t buf_1[LCD_H * LCD_W / 2];
 #endif
 
-    lv_disp_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, MY_DISP_HOR_RES * MY_DISP_HOR_RES / 2);   /*Initialize the display buffer*/
     /*-----------------------------------
      * Register the display in LVGL
      *----------------------------------*/
 
+#if (PKG_LVGL_VER_NUM >= 0x0803FF)
+
+    lv_display_t *display = lv_display_create(MY_DISP_HOR_RES, MY_DISP_VER_RES);
+    lv_display_set_buffers(display, buf_1, NULL, sizeof(buf_1), LV_DISPLAY_RENDER_MODE_PARTIAL);  /*Initialize the display buffer.*/
+    lv_display_set_flush_cb(display, disp_flush);
+
+#else
+
+    /* Example for 1) */
+    static lv_disp_draw_buf_t draw_buf_dsc_1;
+
+    lv_disp_draw_buf_init(&draw_buf_dsc_1, buf_1, NULL, MY_DISP_HOR_RES * MY_DISP_HOR_RES / 2);   /*Initialize the display buffer*/
+
+    /*-----------------------------------
+     * Register the display in LVGL
+     *----------------------------------*/
     static lv_disp_drv_t disp_drv;                         /*Descriptor of a display driver*/
     lv_disp_drv_init(&disp_drv);                    /*Basic initialization*/
 
@@ -124,6 +146,9 @@ void lv_port_disp_init(void)
 
     /*Finally register the driver*/
     lv_disp_drv_register(&disp_drv);
+
+#endif
+
 }
 
 /**********************
@@ -155,7 +180,7 @@ void disp_disable_update(void)
 /*Flush the content of the internal buffer the specific area on the display
  *You can use DMA or any hardware acceleration to do this operation in the background but
  *'lv_disp_flush_ready()' has to be called when finished.*/
-static void disp_flush(lv_disp_drv_t * disp_drv, const lv_area_t * area, lv_color_t * color_p)
+void disp_flush(LV_DISP_TYPE * disp_drv, const lv_area_t * area, lv_COLOR_TYPE * color_p)
 {
     extern void lcd_fill_array(rt_uint16_t x_start, rt_uint16_t y_start, rt_uint16_t x_end, rt_uint16_t y_end, void *pcolor);
     lcd_fill_array(area->x1, area->y1, area->x2, area->y2, color_p);