add LV_ATTRIBUTE_MEM_ALIGN option

update lv_conf_chechker.h

lv_conf_checker.h

@@ -40,7 +40,8 @@
 #endif
 #endif     /*LV_MEM_CUSTOM*/
 
-/* Garbage Collector settings.  */
+/* Garbage Collector settings
+ * Used if lvgl is binded to higher language and the memory is managed by that language */
 #ifndef LV_ENABLE_GC
 #define LV_ENABLE_GC 0
 #endif
@@ -89,7 +90,7 @@
  *----------------*/
 
 /* VDB (Virtual Display Buffer) is an internal graphics buffer.
- * To images will be drawn into this buffer first and then
+ * The GUI will be drawn into this buffer first and then
  * the buffer will be passed to your `disp_drv.disp_flush` function to
  * copy it to your frame buffer.
  * VDB is required for: buffered drawing, opacity, anti-aliasing and shadows
@@ -115,7 +116,7 @@
 #define LV_VDB_ADR          0
 #endif
 
-/* Use two Virtual Display buffers (VDB) parallelize rendering and flushing (optional)
+/* Use two Virtual Display buffers (VDB) to parallelize rendering and flushing
  * The flushing should use DMA to write the frame buffer in the background */
 #ifndef LV_VDB_DOUBLE
 #define LV_VDB_DOUBLE       0
@@ -165,7 +166,7 @@
 
 /*Color settings*/
 #ifndef LV_COLOR_DEPTH
-#define LV_COLOR_DEPTH     32                     /*Color depth: 1/8/16/32*/
+#define LV_COLOR_DEPTH     16                     /*Color depth: 1/8/16/32*/
 #endif
 #ifndef LV_COLOR_16_SWAP
 #define LV_COLOR_16_SWAP   0                      /*Swap the 2 bytes of RGB565 color. Useful if the display has a 8 bit interface (e.g. SPI)*/
@@ -224,6 +225,9 @@
 #ifndef LV_ATTRIBUTE_TASK_HANDLER
 #define LV_ATTRIBUTE_TASK_HANDLER               /* Define a custom attribute to `lv_task_handler` function */
 #endif
+#ifndef LV_ATTRIBUTE_MEM_ALIGN
+#define LV_ATTRIBUTE_MEM_ALIGN                  /* With size optimization (-Os) the compiler might not align data to 4 or 8 byte boundary. This alignment will be explicitly applied where needed.*/
+#endif
 #ifndef LV_COMPILER_VLA_SUPPORTED
 #define LV_COMPILER_VLA_SUPPORTED            1  /* 1: Variable length array is supported*/
 #endif
@@ -237,7 +241,7 @@
 #endif
 #if LV_TICK_CUSTOM == 1
 #ifndef LV_TICK_CUSTOM_INCLUDE
-#define LV_TICK_CUSTOM_INCLUDE  "Arduino.h"         /*Header for the sys time function*/
+#define LV_TICK_CUSTOM_INCLUDE  "sonething.h"         /*Header for the sys time function*/
 #endif
 #ifndef LV_TICK_CUSTOM_SYS_TIME_EXPR
 #define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis())     /*Expression evaluating to current systime in ms*/
@@ -262,7 +266,7 @@
 /* 1: Print the log with 'printf'; 0: user need to register a callback*/
 
 #ifndef LV_LOG_PRINTF
-#  define LV_LOG_PRINTF   1
+#  define LV_LOG_PRINTF   0
 #endif
 #endif  /*USE_LV_LOG*/
 
@@ -386,7 +390,7 @@
 #define LV_OBJ_FREE_PTR         1           /*Enable the free pointer attribute*/
 #endif
 #ifndef LV_OBJ_REALIGN
-#define LV_OBJ_REALIGN          0           /*Enable `lv_obj_realaign()` based on `lv_obj_align()` parameters*/
+#define LV_OBJ_REALIGN          1           /*Enable `lv_obj_realaign()` based on `lv_obj_align()` parameters*/
 #endif
 
 /*==================

lv_conf_templ.h

@@ -136,6 +136,7 @@
 /*Compiler settings*/
 #define LV_ATTRIBUTE_TICK_INC                   /* Define a custom attribute to `lv_tick_inc` function */
 #define LV_ATTRIBUTE_TASK_HANDLER               /* Define a custom attribute to `lv_task_handler` function */
+#define LV_ATTRIBUTE_MEM_ALIGN                  /* With size optimization (-Os) the compiler might not align data to 4 or 8 byte boundary. This alignment will be explicitly applied where needed.*/
 #define LV_COMPILER_VLA_SUPPORTED            1  /* 1: Variable length array is supported*/
 #define LV_COMPILER_NON_CONST_INIT_SUPPORTED 1  /* 1: Initialization with non constant values are supported */
 

lv_core/lv_vdb.c

@@ -20,6 +20,10 @@
 #define LV_ATTRIBUTE_FLUSH_READY
 #endif
 
+#ifndef LV_ATTRIBUTE_MEM_ALIGN
+#define LV_ATTRIBUTE_MEM_ALIGN
+#endif
+
 /**********************
  *      TYPEDEFS
  **********************/
@@ -36,7 +40,7 @@
 #if LV_VDB_DOUBLE == 0
 #  if LV_VDB_ADR == 0
 /*If the buffer address is not specified  simply allocate it*/
-static uint8_t vdb_buf[LV_VDB_SIZE_IN_BYTES];
+static LV_ATTRIBUTE_MEM_ALIGN uint8_t vdb_buf[LV_VDB_SIZE_IN_BYTES];
 static lv_vdb_t vdb = {.buf = (lv_color_t *)vdb_buf};
 #  else     /*LV_VDB_ADR != 0*/
 /*If the buffer address is specified use that address*/
@@ -49,8 +53,8 @@ static lv_vdb_t vdb = {.buf = (lv_color_t *)LV_VDB_ADR};
 static uint8_t vdb_active = 0;
 #  if LV_VDB_ADR == 0
 /*If the buffer address is not specified  simply allocate it*/
-static uint8_t vdb_buf1[LV_VDB_SIZE_IN_BYTES];
-static uint8_t vdb_buf2[LV_VDB_SIZE_IN_BYTES];
+static LV_ATTRIBUTE_MEM_ALIGN uint8_t vdb_buf1[LV_VDB_SIZE_IN_BYTES];
+static LV_ATTRIBUTE_MEM_ALIGN uint8_t vdb_buf2[LV_VDB_SIZE_IN_BYTES];
 static lv_vdb_t vdb[2] = {{.buf = (lv_color_t *) vdb_buf1}, {.buf = (lv_color_t *) vdb_buf2}};
 #  else /*LV_VDB_ADR != 0*/
 /*If the buffer address is specified use that address*/

lv_draw/lv_draw_vbasic.c

@@ -30,6 +30,10 @@
  *********************/
 #define VFILL_HW_ACC_SIZE_LIMIT    50      /*Always fill < 50 px with 'sw_color_fill' because of the hw. init overhead*/
 
+#ifndef LV_ATTRIBUTE_MEM_ALIGN
+#define LV_ATTRIBUTE_MEM_ALIGN
+#endif
+
 /**********************
  *      TYPEDEFS
  **********************/
@@ -147,7 +151,7 @@ void lv_vfill(const lv_area_t * cords_p, const lv_area_t * mask_p,
 
 
 #if USE_LV_GPU
-    static lv_color_t color_array_tmp[LV_HOR_RES];       /*Used by 'lv_disp_mem_blend'*/
+    static LV_ATTRIBUTE_MEM_ALIGN lv_color_t color_array_tmp[LV_HOR_RES];       /*Used by 'lv_disp_mem_blend'*/
     static lv_coord_t last_width = -1;
 
     lv_coord_t w = lv_area_get_width(&vdb_rel_a);
@@ -529,21 +533,6 @@ void lv_vmap(const lv_area_t * cords_p, const lv_area_t * mask_p,
                             vdb_buf_tmp[col] = lv_color_mix(px_color, vdb_buf_tmp[col], opa_result);
 #else
                             vdb_buf_tmp[col] = color_mix_2_alpha(vdb_buf_tmp[col], vdb_buf_tmp[col].alpha, px_color,  opa_result);
-//                            if(vdb_buf_tmp[col].alpha == LV_OPA_TRANSP) {
-//                                /* When it is the first visible pixel on the transparent screen
-//                                 * simlply use this color and set the pixel opa as backrounds alpha*/
-//                                vdb_buf_tmp[col] = px_color;
-//                                vdb_buf_tmp[col].alpha = opa_result;
-//                            } else {
-//                                /* If already this pixel is already written then for performance reasons
-//                                 * don't care with alpha channel
-//                                 */
-//                                lv_opa_t bg_opa = vdb_buf_tmp[col].alpha;
-//                                vdb_buf_tmp[col] = lv_color_mix(px_color, vdb_buf_tmp[col], opa_result);
-//
-//                                uint16_t opa_tmp = (uint16_t)opa_result + ((bg_opa * (255 - opa_result)) >> 8);
-//                                vdb_buf_tmp[col].alpha = opa_tmp > 0xFF ? 0xFF : opa_tmp ;
-//                            }
 #endif
                         }
                     }