refactoring enum declaration

lv_draw/lv_draw.h

@@ -38,12 +38,13 @@ extern "C" {
  *      TYPEDEFS
  **********************/
 
-typedef enum {
+enum {
     LV_IMG_SRC_VARIABLE,
     LV_IMG_SRC_FILE,
     LV_IMG_SRC_SYMBOL,
     LV_IMG_SRC_UNKNOWN,
-} lv_img_src_t;
+};
+typedef uint8_t lv_img_src_t;
 
 
 /**********************

lv_draw/lv_draw_img.h

@@ -40,7 +40,7 @@ typedef struct {
 }lv_img_header_t;
 
 /*Image color format*/
-typedef enum {
+enum {
     LV_IMG_CF_UNKOWN = 0,
 
 	LV_IMG_CF_RAW,          		/*Contains the file as it is. Needs custom decoder function*/
@@ -60,7 +60,8 @@ typedef enum {
 	LV_IMG_CF_ALPHA_2BIT, 			/*Can have one color but 4 different alpha value*/
 	LV_IMG_CF_ALPHA_4BIT, 			/*Can have one color but 16 different alpha value*/
 	LV_IMG_CF_ALPHA_8BIT, 			/*Can have one color but 256 different alpha value*/
-} lv_img_cf_t;
+};
+typedef uint8_t lv_img_cf_t;
 
 /* Image header it is compatible with
  * the result image converter utility*/

lv_draw/lv_draw_label.c

@@ -17,11 +17,12 @@
 /**********************
  *      TYPEDEFS
  **********************/
-typedef enum {
+enum {
     CMD_STATE_WAIT,
     CMD_STATE_PAR,
     CMD_STATE_IN,
-} cmd_state_t;
+};
+typedef uint8_t cmd_state_t;
 
 /**********************
  *  STATIC PROTOTYPES