Refresh using dma2d,screen refresh average 25fps

bsp/stm32/libraries/HAL_Drivers/drv_lcd_mipi.c

@@ -23,7 +23,7 @@ struct stm32_lcd
     struct rt_device parent;
     struct rt_device_graphic_info info;
 };
-static struct stm32_lcd lcd;
+struct stm32_lcd lcd;
 
 extern void stm32_mipi_lcd_init(void);
 extern void stm32_mipi_lcd_config(rt_uint32_t pixel_format);
@@ -76,7 +76,7 @@ rt_err_t ltdc_init(void)
     HAL_DSI_Init(&hdsi, &dsi_pll);
 
     hdsi_video.VirtualChannelID             = 0;
-    hdsi_video.ColorCoding                  = DSI_RGB888;
+    hdsi_video.ColorCoding                  = DSI_RGB565;
     hdsi_video.VSPolarity                   = DSI_VSYNC_ACTIVE_HIGH;
     hdsi_video.HSPolarity                   = DSI_HSYNC_ACTIVE_HIGH;
     hdsi_video.DEPolarity                   = DSI_DATA_ENABLE_ACTIVE_HIGH;
@@ -130,7 +130,7 @@ rt_err_t ltdc_init(void)
 
     HAL_DSI_Start(&(hdsi));
 
-    stm32_mipi_lcd_config(RTGRAPHIC_PIXEL_FORMAT_ARGB888);
+    stm32_mipi_lcd_config(RTGRAPHIC_PIXEL_FORMAT_RGB565);
 
     return RT_EOK;
 }
@@ -143,7 +143,7 @@ void ltdc_layer_init(uint16_t index, uint32_t framebuffer)
     layer_cfg.WindowX1        = LCD_WIDTH;
     layer_cfg.WindowY0        = 0;
     layer_cfg.WindowY1        = LCD_HEIGHT;
-    layer_cfg.PixelFormat     = LTDC_PIXEL_FORMAT_ARGB8888;
+    layer_cfg.PixelFormat     = LTDC_PIXEL_FORMAT_RGB565;
     layer_cfg.BlendingFactor1 = LTDC_BLENDING_FACTOR1_PAxCA;
     layer_cfg.BlendingFactor2 = LTDC_BLENDING_FACTOR2_PAxCA;
     layer_cfg.Alpha           = 255;
@@ -169,9 +169,9 @@ static rt_err_t stm32_lcd_init(rt_device_t device)
 {
     lcd.info.width          = LCD_WIDTH;
     lcd.info.height         = LCD_HEIGHT;
-    lcd.info.pixel_format   = RTGRAPHIC_PIXEL_FORMAT_ARGB888;
-    lcd.info.bits_per_pixel = 32;
-    lcd.info.framebuffer    = (void *)rt_malloc_align(LCD_WIDTH * LCD_HEIGHT * (lcd.info.bits_per_pixel / 8), 32);
+    lcd.info.pixel_format   = RTGRAPHIC_PIXEL_FORMAT_RGB565;
+    lcd.info.bits_per_pixel = 16;
+    lcd.info.framebuffer    = (void *)rt_malloc_align(LCD_WIDTH * LCD_HEIGHT * (lcd.info.bits_per_pixel / 8), 32);;
     memset(lcd.info.framebuffer, 0, LCD_WIDTH * LCD_HEIGHT * (lcd.info.bits_per_pixel / 8));
     ltdc_init();
     ltdc_layer_init(0, (uint32_t)lcd.info.framebuffer);

bsp/stm32/stm32f469-st-disco/applications/lvgl/lv_conf.h

@@ -12,7 +12,7 @@
 #define LV_CONF_H
 
 #define LV_USE_PERF_MONITOR     1
-#define LV_COLOR_DEPTH          32
+#define LV_COLOR_DEPTH          16
 
 #define LV_USE_GPU_STM32_DMA2D  1
 #define LV_GPU_DMA2D_CMSIS_INCLUDE "stm32f469xx.h"

bsp/stm32/stm32f469-st-disco/applications/lvgl/lv_demo.c

@@ -15,14 +15,17 @@
 #include <rtdbg.h>
 
 #ifndef LV_THREAD_STACK_SIZE
-#define LV_THREAD_STACK_SIZE 4096
+    #define LV_THREAD_STACK_SIZE 4096
 #endif
 
 #ifndef LV_THREAD_PRIO
-#define LV_THREAD_PRIO (RT_THREAD_PRIORITY_MAX*2/3)
+    #define LV_THREAD_PRIO (RT_THREAD_PRIORITY_MAX * 2 / 8)
 #endif
 
-static void lvgl_thread(void *parameter)
+static struct rt_thread lvgl_thread;
+static rt_uint8_t lvgl_thread_stack[LV_THREAD_STACK_SIZE];
+
+static void lvgl_entry(void *parameter)
 {
     extern void lv_demo_music(void);
     lv_demo_music();
@@ -30,7 +33,7 @@ static void lvgl_thread(void *parameter)
     while(1)
     {
         lv_task_handler();
-        rt_thread_mdelay(1);
+        rt_thread_mdelay(5);
     }
 }
 
@@ -38,12 +41,15 @@ static int lvgl_demo_init(void)
 {
     rt_thread_t tid;
 
-    tid = rt_thread_create("LVGL", lvgl_thread, RT_NULL, LV_THREAD_STACK_SIZE, LV_THREAD_PRIO, 10);
-    if(tid == RT_NULL)
-    {
-        LOG_E("Fail to create 'LVGL' thread");
-    }
-    rt_thread_startup(tid);
+    rt_thread_init(&lvgl_thread,
+                   "LVGL",
+                   lvgl_entry,
+                   RT_NULL,
+                   &lvgl_thread_stack[0],
+                   sizeof(lvgl_thread_stack),
+                   LV_THREAD_PRIO,
+                   10);
+    rt_thread_startup(&lvgl_thread);
 
     return 0;
 }