diff --git a/lv_core/lv_obj.h b/lv_core/lv_obj.h
index 59c1fe7039..6c3c356196 100644
--- a/lv_core/lv_obj.h
+++ b/lv_core/lv_obj.h
@@ -65,22 +65,24 @@ extern "C" {
 
 struct _lv_obj_t;
 
-typedef enum
+enum
 {
     LV_DESIGN_DRAW_MAIN,
     LV_DESIGN_DRAW_POST,
     LV_DESIGN_COVER_CHK,
-} lv_design_mode_t;
+};
+typedef uint8_t lv_design_mode_t;
 
 typedef bool (* lv_design_func_t) (struct _lv_obj_t * obj, const lv_area_t * mask_p, lv_design_mode_t mode);
 
-typedef enum
+enum
 {
     LV_RES_INV = 0,      /*Typically indicates that the object is deleted (become invalid) in the action function or an operation was failed*/
     LV_RES_OK,           /*The object is valid (no deleted) after the action*/
-} lv_res_t;
+};
+typedef uint8_t lv_res_t;
 
-typedef enum
+enum
 {
     /*General signals*/
     LV_SIGNAL_CLEANUP,
@@ -105,7 +107,8 @@ typedef enum
     LV_SIGNAL_DEFOCUS,
     LV_SIGNAL_CONTROLL,
     LV_SIGNAL_GET_EDITABLE,
-} lv_signal_t;
+};
+typedef uint8_t lv_signal_t;
 
 typedef lv_res_t (* lv_signal_func_t) (struct _lv_obj_t * obj, lv_signal_t sign, void * param);
 
@@ -150,7 +153,7 @@ typedef struct _lv_obj_t
 typedef lv_res_t (*lv_action_t) (struct _lv_obj_t * obj);
 
 /*Protect some attributes (max. 8 bit)*/
-typedef enum
+enum
 {
     LV_PROTECT_NONE      = 0x00,
     LV_PROTECT_CHILD_CHG = 0x01, /*Disable the child change signal. Used by the library*/
@@ -159,7 +162,8 @@ typedef enum
     LV_PROTECT_FOLLOW    = 0x08, /*Prevent the object be followed in automatic ordering (e.g. in lv_cont PRETTY layout)*/
     LV_PROTECT_PRESS_LOST= 0x10, /*If the `indev` was pressing this object but swiped out while pressing do not search other object.*/
     LV_PROTECT_CLICK_FOCUS= 0x20,/*Prevent focusing the object by clicking on it*/
-} lv_protect_t;
+};
+typedef uint16_t lv_protect_t;
 
 
 /*Used by `lv_obj_get_type()`. The object's and its ancestor types are stored here*/
@@ -167,7 +171,7 @@ typedef struct {
     const char * type[LV_MAX_ANCESTOR_NUM];   /*[0]: the actual type, [1]: ancestor, [2] #1's ancestor ... [x]: "lv_obj" */
 } lv_obj_type_t;
 
-typedef enum
+enum
 {
     LV_ALIGN_CENTER = 0,
     LV_ALIGN_IN_TOP_LEFT,
@@ -190,9 +194,10 @@ typedef enum
     LV_ALIGN_OUT_RIGHT_TOP,
     LV_ALIGN_OUT_RIGHT_MID,
     LV_ALIGN_OUT_RIGHT_BOTTOM,
-} lv_align_t;
+};
+typedef uint8_t lv_align_t;
 
-typedef enum
+enum
 {
     LV_ANIM_NONE = 0,
     LV_ANIM_FLOAT_TOP,      /*Float from/to the top*/
@@ -201,7 +206,8 @@ typedef enum
     LV_ANIM_FLOAT_RIGHT,    /*Float from/to the right*/
     LV_ANIM_GROW_H,         /*Grow/shrink  horizontally*/
     LV_ANIM_GROW_V,         /*Grow/shrink  vertically*/
-} lv_anim_builtin_t;
+};
+typedef uint8_t lv_anim_builtin_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_core/lv_style.h b/lv_core/lv_style.h
index 741f3e2bbd..032f5cb20b 100644
--- a/lv_core/lv_style.h
+++ b/lv_core/lv_style.h
@@ -29,7 +29,7 @@ extern "C" {
  **********************/
 
 /*Border types (Use 'OR'ed values)*/
-typedef enum
+enum
 {
     LV_BORDER_NONE =   0x00,
     LV_BORDER_BOTTOM = 0x01,
@@ -37,14 +37,16 @@ typedef enum
     LV_BORDER_LEFT =   0x04,
     LV_BORDER_RIGHT =  0x08,
     LV_BORDER_FULL =   0x0F,
-} lv_border_part_t;
+};
+typedef uint8_t lv_border_part_t;
 
 /*Shadow types*/
-typedef enum
+enum
 {
     LV_SHADOW_BOTTOM = 0,
     LV_SHADOW_FULL,
-} lv_shadow_type_t;
+};
+typedef uint8_t lv_shadow_type_t;
 
 typedef struct
 {
@@ -66,7 +68,7 @@ typedef struct
         struct {
             lv_color_t color;
             lv_coord_t width;
-            uint8_t type;
+            lv_shadow_type_t type;
         } shadow;
 
         struct {
diff --git a/lv_core/lv_vdb.c b/lv_core/lv_vdb.c
index bbbab51d94..dc309a2041 100644
--- a/lv_core/lv_vdb.c
+++ b/lv_core/lv_vdb.c
@@ -20,11 +20,12 @@
 /**********************
  *      TYPEDEFS
  **********************/
-typedef enum {
+enum {
     LV_VDB_STATE_FREE = 0,		/*Not used*/
     LV_VDB_STATE_ACTIVE,		/*Being used to render*/
     LV_VDB_STATE_FLUSH,			/*Flushing pixels from it*/
-} lv_vdb_state_t;
+};
+typedef uint8_t lv_vdb_state_t;
 
 /**********************
  *  STATIC PROTOTYPES
diff --git a/lv_draw/lv_draw.h b/lv_draw/lv_draw.h
index 70527780a6..689d68e29d 100644
--- a/lv_draw/lv_draw.h
+++ b/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;
 
 
 /**********************
diff --git a/lv_draw/lv_draw_img.h b/lv_draw/lv_draw_img.h
index b11a9ca22f..71ceceafcc 100644
--- a/lv_draw/lv_draw_img.h
+++ b/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*/
diff --git a/lv_draw/lv_draw_label.c b/lv_draw/lv_draw_label.c
index ad566fcba5..79b0ad1cba 100644
--- a/lv_draw/lv_draw_label.c
+++ b/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
diff --git a/lv_hal/lv_hal_indev.h b/lv_hal/lv_hal_indev.h
index a7f927f5c3..43bef354a8 100644
--- a/lv_hal/lv_hal_indev.h
+++ b/lv_hal/lv_hal_indev.h
@@ -29,18 +29,20 @@ extern "C" {
  **********************/
 
 /*Possible input device types*/
-typedef enum {
+enum {
     LV_INDEV_TYPE_NONE,        /*Show uninitialized state*/
     LV_INDEV_TYPE_POINTER,     /*Touch pad, mouse, external button*/
     LV_INDEV_TYPE_KEYPAD,      /*Keypad or keyboard*/
     LV_INDEV_TYPE_BUTTON,      /*External (hardware button) which is assinged to a specific point of the screen*/
-} lv_hal_indev_type_t;
+};
+typedef uint8_t lv_hal_indev_type_t;
 
 /*States for input devices*/
-typedef enum {
+enum {
     LV_INDEV_STATE_REL = 0,
     LV_INDEV_STATE_PR
-} lv_indev_state_t;
+};
+typedef uint8_t lv_indev_state_t;
 
 /*Data type when an input device is read */
 typedef struct {
@@ -49,8 +51,8 @@ typedef struct {
         uint32_t key;          /*For LV_INDEV_TYPE_KEYPAD the currently pressed key*/
         uint32_t btn;          /*For LV_INDEV_TYPE_BUTTON the currently pressed button*/
     };
-    lv_indev_state_t state;    /*LV_INDEV_STATE_REL or LV_INDEV_STATE_PR*/
     void *user_data;           /*'lv_indev_drv_t.priv' for this driver*/
+    lv_indev_state_t state;    /*LV_INDEV_STATE_REL or LV_INDEV_STATE_PR*/
 } lv_indev_data_t;
 
 /*Initialized by the user and registered by 'lv_indev_add()'*/
diff --git a/lv_misc/lv_fs.h b/lv_misc/lv_fs.h
index 2662abf842..f7e77dc71d 100644
--- a/lv_misc/lv_fs.h
+++ b/lv_misc/lv_fs.h
@@ -33,7 +33,7 @@ extern "C" {
 /**********************
  *      TYPEDEFS
  **********************/
-typedef enum
+enum
 {
     LV_FS_RES_OK = 0,
     LV_FS_RES_HW_ERR,      /*Low level hardware error*/
@@ -48,7 +48,8 @@ typedef enum
     LV_FS_RES_OUT_OF_MEM,  /*Not enough memory for an internal operation*/
     LV_FS_RES_INV_PARAM,   /*Invalid parameter among arguments*/
     LV_FS_RES_UNKNOWN,     /*Other unknown error*/
-} lv_fs_res_t;
+};
+typedef uint8_t lv_fs_res_t;
 
 struct __lv_fs_drv_t;
 
@@ -65,11 +66,12 @@ typedef struct
     struct __lv_fs_drv_t * drv;
 } lv_fs_dir_t;
 
-typedef enum
+enum
 {
     LV_FS_MODE_WR = 0x01,
     LV_FS_MODE_RD = 0x02,
-} lv_fs_mode_t;
+};
+typedef uint8_t lv_fs_mode_t;
 
 typedef struct __lv_fs_drv_t
 {
diff --git a/lv_misc/lv_log.h b/lv_misc/lv_log.h
index ae26afeaaa..0094798551 100644
--- a/lv_misc/lv_log.h
+++ b/lv_misc/lv_log.h
@@ -29,14 +29,15 @@ extern "C" {
  **********************/
 
 /*Possible log level. For compatibility declare it independently from `USE_LV_LOG`*/
-typedef enum
+enum
 {
 	LV_LOG_LEVEL_TRACE,		/*A lot of logs to give detailed information*/
 	LV_LOG_LEVEL_INFO,		/*Log important events*/
 	LV_LOG_LEVEL_WARN,		/*Log if something unwanted happened but didn't caused problem*/
 	LV_LOG_LEVEL_ERROR,		/*Only critical issue, when the system may fail*/
 	_LV_LOG_LEVEL_NUM
-}lv_log_level_t;
+};
+typedef uint8_t lv_log_level_t;
 
 #if USE_LV_LOG
 
diff --git a/lv_misc/lv_task.h b/lv_misc/lv_task.h
index d4106c0d08..2c59b3979a 100644
--- a/lv_misc/lv_task.h
+++ b/lv_misc/lv_task.h
@@ -37,7 +37,7 @@ extern "C" {
 /**
  * Possible priorities for lv_tasks
  */
-typedef enum
+enum
 {
     LV_TASK_PRIO_OFF = 0,
     LV_TASK_PRIO_LOWEST,
@@ -46,7 +46,8 @@ typedef enum
     LV_TASK_PRIO_HIGH,
     LV_TASK_PRIO_HIGHEST,
     LV_TASK_PRIO_NUM,
-} lv_task_prio_t;
+};
+typedef uint8_t lv_task_prio_t;
 
 /**
  * Descriptor of a lv_task
diff --git a/lv_misc/lv_txt.h b/lv_misc/lv_txt.h
index 089833f256..91a90b9baa 100644
--- a/lv_misc/lv_txt.h
+++ b/lv_misc/lv_txt.h
@@ -32,21 +32,23 @@ extern "C" {
 /**********************
  *      TYPEDEFS
  **********************/
-typedef enum
+enum
 {
     LV_TXT_FLAG_NONE =     0x00,
     LV_TXT_FLAG_RECOLOR =  0x01,   /*Enable parsing of recolor command*/
     LV_TXT_FLAG_EXPAND =   0x02,   /*Ignore width (Used by the library)*/
     LV_TXT_FLAG_CENTER =   0x04,   /*Align the text to the middle*/
 	LV_TXT_FLAG_RIGHT  =   0x08,   /*Align the text to the right*/
-} lv_txt_flag_t;
+};
+typedef uint8_t lv_txt_flag_t;
 
-typedef enum
+enum
 {
     LV_TXT_CMD_STATE_WAIT,      /*Waiting for command*/
     LV_TXT_CMD_STATE_PAR,       /*Processing the parameter*/
     LV_TXT_CMD_STATE_IN,        /*Processing the command*/
-} lv_txt_cmd_state_t;
+};
+typedef uint8_t lv_txt_cmd_state_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_arc.h b/lv_objx/lv_arc.h
index e9f97e9cea..70805d5e19 100644
--- a/lv_objx/lv_arc.h
+++ b/lv_objx/lv_arc.h
@@ -40,9 +40,11 @@ typedef struct {
 
 
 /*Styles*/
-typedef enum {
+enum {
     LV_ARC_STYLE_MAIN,
-} lv_arc_style_t;
+};
+typedef uint8_t lv_arc_style_t;
+
 
 
 /**********************
diff --git a/lv_objx/lv_bar.h b/lv_objx/lv_bar.h
index 2c0de508d8..a66d583d33 100644
--- a/lv_objx/lv_bar.h
+++ b/lv_objx/lv_bar.h
@@ -45,10 +45,11 @@ typedef struct
     lv_style_t *style_indic;        /*Style of the indicator*/
 } lv_bar_ext_t;
 
-typedef enum {
+enum {
     LV_BAR_STYLE_BG,
     LV_BAR_STYLE_INDIC,
-} lv_bar_style_t;
+};
+typedef uint8_t lv_bar_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_btn.h b/lv_objx/lv_btn.h
index a726d23e00..7ec6ed9ce5 100644
--- a/lv_objx/lv_btn.h
+++ b/lv_objx/lv_btn.h
@@ -39,7 +39,7 @@ extern "C" {
 
 /* Button states
  * It can be used not only by buttons but other button-like objects too*/
-typedef enum
+enum
 {
     LV_BTN_STATE_REL,
     LV_BTN_STATE_PR,
@@ -47,16 +47,19 @@ typedef enum
     LV_BTN_STATE_TGL_PR,
     LV_BTN_STATE_INA,
     LV_BTN_STATE_NUM,
-} lv_btn_state_t;
+};
+typedef uint8_t lv_btn_state_t;
 
-typedef enum
+enum
 {
     LV_BTN_ACTION_CLICK,
     LV_BTN_ACTION_PR,
     LV_BTN_ACTION_LONG_PR,
     LV_BTN_ACTION_LONG_PR_REPEAT,
     LV_BTN_ACTION_NUM,
-} lv_btn_action_t;
+};
+typedef uint8_t lv_btn_action_t;
+
 
 /*Data of button*/
 typedef struct
@@ -76,13 +79,14 @@ typedef struct
 } lv_btn_ext_t;
 
 /*Styles*/
-typedef enum {
+enum {
     LV_BTN_STYLE_REL,
     LV_BTN_STYLE_PR,
     LV_BTN_STYLE_TGL_REL,
     LV_BTN_STYLE_TGL_PR,
     LV_BTN_STYLE_INA,
-} lv_btn_style_t;
+};
+typedef uint8_t lv_btn_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_btnm.h b/lv_objx/lv_btnm.h
index 47f5671935..7ec4c776d8 100644
--- a/lv_objx/lv_btnm.h
+++ b/lv_objx/lv_btnm.h
@@ -62,14 +62,15 @@ typedef struct
     uint8_t toggle     :1;                      /*Enable toggling*/
 } lv_btnm_ext_t;
 
-typedef enum {
+enum {
     LV_BTNM_STYLE_BG,
     LV_BTNM_STYLE_BTN_REL,
     LV_BTNM_STYLE_BTN_PR,
     LV_BTNM_STYLE_BTN_TGL_REL,
     LV_BTNM_STYLE_BTN_TGL_PR,
     LV_BTNM_STYLE_BTN_INA,
-} lv_btnm_style_t;
+};
+typedef uint8_t lv_btnm_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_calendar.c b/lv_objx/lv_calendar.c
index 53e1a5e8dc..a29a6881aa 100644
--- a/lv_objx/lv_calendar.c
+++ b/lv_objx/lv_calendar.c
@@ -22,11 +22,12 @@
 /**********************
  *      TYPEDEFS
  **********************/
-typedef enum {
+enum {
     DAY_DRAW_PREV_MONTH,
     DAY_DRAW_ACT_MONTH,
     DAY_DRAW_NEXT_MONTH,
-} day_draw_state_t;
+};
+typedef uint8_t day_draw_state_t;
 
 /**********************
  *  STATIC PROTOTYPES
diff --git a/lv_objx/lv_calendar.h b/lv_objx/lv_calendar.h
index 2d381e1e4c..952fce8e27 100644
--- a/lv_objx/lv_calendar.h
+++ b/lv_objx/lv_calendar.h
@@ -60,7 +60,7 @@ typedef struct {
 } lv_calendar_ext_t;
 
 /*Styles*/
-typedef enum {
+enum {
     LV_CALENDAR_STYLE_BG,       /*Also the style of the "normal" date numbers*/
     LV_CALENDAR_STYLE_HEADER,
     LV_CALENDAR_STYLE_HEADER_PR,
@@ -69,7 +69,9 @@ typedef enum {
     LV_CALENDAR_STYLE_INACTIVE_DAYS,
     LV_CALENDAR_STYLE_WEEK_BOX,
     LV_CALENDAR_STYLE_TODAY_BOX,
-} lv_calendar_style_t;
+};
+typedef uint8_t lv_calendar_style_t;
+
 
 
 /**********************
diff --git a/lv_objx/lv_cb.h b/lv_objx/lv_cb.h
index 1d3b89da52..b587733417 100644
--- a/lv_objx/lv_cb.h
+++ b/lv_objx/lv_cb.h
@@ -51,14 +51,15 @@ typedef struct
     lv_obj_t * label;   /*Pointer to label*/
 } lv_cb_ext_t;
 
-typedef enum {
+enum {
     LV_CB_STYLE_BG,
     LV_CB_STYLE_BOX_REL,
     LV_CB_STYLE_BOX_PR,
     LV_CB_STYLE_BOX_TGL_REL,
     LV_CB_STYLE_BOX_TGL_PR,
     LV_CB_STYLE_BOX_INA,
-} lv_cb_style_t;
+};
+typedef uint8_t lv_cb_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_chart.h b/lv_objx/lv_chart.h
index 07f5a380c1..e30ec1b1b7 100644
--- a/lv_objx/lv_chart.h
+++ b/lv_objx/lv_chart.h
@@ -58,12 +58,13 @@ typedef struct
 } lv_chart_ext_t;
 
 /*Chart types*/
-typedef enum
+enum
 {
     LV_CHART_TYPE_LINE = 0x01,
     LV_CHART_TYPE_COLUMN = 0x02,
     LV_CHART_TYPE_POINT = 0x04,
-} lv_chart_type_t;
+};
+typedef uint8_t lv_chart_type_t;
 
 
 /**********************
diff --git a/lv_objx/lv_cont.h b/lv_objx/lv_cont.h
index 97323d7071..dea1974adf 100644
--- a/lv_objx/lv_cont.h
+++ b/lv_objx/lv_cont.h
@@ -32,7 +32,7 @@ extern "C" {
  **********************/
 
 /*Layout options*/
-typedef enum
+enum
 {
     LV_LAYOUT_OFF = 0,
     LV_LAYOUT_CENTER,
@@ -44,7 +44,8 @@ typedef enum
     LV_LAYOUT_ROW_B,    /*Row bottom align*/
     LV_LAYOUT_PRETTY,   /*Put as many object as possible in row and begin a new row*/
     LV_LAYOUT_GRID,     /*Align same-sized object into a grid*/
-} lv_layout_t;
+};
+typedef uint8_t lv_layout_t;
 
 typedef struct
 {
diff --git a/lv_objx/lv_ddlist.h b/lv_objx/lv_ddlist.h
index 788fd28872..4833707f2e 100644
--- a/lv_objx/lv_ddlist.h
+++ b/lv_objx/lv_ddlist.h
@@ -57,11 +57,12 @@ typedef struct
     lv_coord_t fix_height;               /*Height of the ddlist when opened. (0: auto-size)*/
 } lv_ddlist_ext_t;
 
-typedef enum {
+enum {
     LV_DDLIST_STYLE_BG,
     LV_DDLIST_STYLE_SEL,
     LV_DDLIST_STYLE_SB,
-} lv_ddlist_style_t;
+};
+typedef uint8_t lv_ddlist_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_imgbtn.h b/lv_objx/lv_imgbtn.h
index 678c3b08e1..28e3199b38 100644
--- a/lv_objx/lv_imgbtn.h
+++ b/lv_objx/lv_imgbtn.h
@@ -47,13 +47,14 @@ typedef struct {
 
 
 /*Styles*/
-typedef enum {
+enum {
     LV_IMGBTN_STYLE_REL,
     LV_IMGBTN_STYLE_PR,
     LV_IMGBTN_STYLE_TGL_REL,
     LV_IMGBTN_STYLE_TGL_PR,
     LV_IMGBTN_STYLE_INA,
-} lv_imgbtn_style_t;
+};
+typedef uint8_t lv_imgbtn_style_t;
 
 
 /**********************
diff --git a/lv_objx/lv_kb.h b/lv_objx/lv_kb.h
index c4984807af..c729a4e689 100644
--- a/lv_objx/lv_kb.h
+++ b/lv_objx/lv_kb.h
@@ -41,11 +41,11 @@ extern "C" {
  *      TYPEDEFS
  **********************/
 
-typedef enum {
+enum {
     LV_KB_MODE_TEXT,
     LV_KB_MODE_NUM,
-} lv_kb_mode_t;
-
+};
+typedef uint8_t lv_kb_mode_t;
 
 /*Data of keyboard*/
 typedef struct {
@@ -58,14 +58,16 @@ typedef struct {
     lv_action_t  hide_action;  /*Called when the "Hide" button is clicked*/
 } lv_kb_ext_t;
 
-typedef enum {
+enum {
     LV_KB_STYLE_BG,
     LV_KB_STYLE_BTN_REL,
     LV_KB_STYLE_BTN_PR,
     LV_KB_STYLE_BTN_TGL_REL,
     LV_KB_STYLE_BTN_TGL_PR,
     LV_KB_STYLE_BTN_INA,
-} lv_kb_style_t;
+};
+typedef uint8_t lv_kb_style_t;
+
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_label.h b/lv_objx/lv_label.h
index 88401d5028..b8d863db88 100644
--- a/lv_objx/lv_label.h
+++ b/lv_objx/lv_label.h
@@ -37,21 +37,23 @@ extern "C" {
  **********************/
 
 /*Long mode behaviors. Used in 'lv_label_ext_t' */
-typedef enum
+enum
 {
     LV_LABEL_LONG_EXPAND,   /*Expand the object size to the text size*/
     LV_LABEL_LONG_BREAK,    /*Keep the object width, break the too long lines and expand the object height*/
     LV_LABEL_LONG_SCROLL,   /*Expand the object size and scroll the text on the parent (move the label object)*/
     LV_LABEL_LONG_DOT,      /*Keep the size and write dots at the end if the text is too long*/
     LV_LABEL_LONG_ROLL,     /*Keep the size and roll the text infinitely*/
-} lv_label_long_mode_t;
+};
+typedef uint8_t lv_label_long_mode_t;
 
 /*Label align policy*/
-typedef enum {
+enum {
     LV_LABEL_ALIGN_LEFT,
     LV_LABEL_ALIGN_CENTER,
     LV_LABEL_ALIGN_RIGHT,
-} lv_label_align_t;
+};
+typedef uint8_t lv_label_align_t;
 
 /*Data of label*/
 typedef struct
diff --git a/lv_objx/lv_list.h b/lv_objx/lv_list.h
index 7fae1a888e..44ecf1f954 100644
--- a/lv_objx/lv_list.h
+++ b/lv_objx/lv_list.h
@@ -61,7 +61,7 @@ typedef struct
 #endif
 } lv_list_ext_t;
 
-typedef enum {
+enum {
     LV_LIST_STYLE_BG,
     LV_LIST_STYLE_SCRL,
     LV_LIST_STYLE_SB,
@@ -70,7 +70,9 @@ typedef enum {
     LV_LIST_STYLE_BTN_TGL_REL,
     LV_LIST_STYLE_BTN_TGL_PR,
     LV_LIST_STYLE_BTN_INA,
-} lv_list_style_t;
+};
+typedef uint8_t lv_list_style_t;
+
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_mbox.h b/lv_objx/lv_mbox.h
index d5c551d0c4..9ca39b6567 100644
--- a/lv_objx/lv_mbox.h
+++ b/lv_objx/lv_mbox.h
@@ -58,7 +58,7 @@ typedef struct
     uint16_t anim_time;         /*Duration of close animation [ms] (0: no animation)*/
 } lv_mbox_ext_t;
 
-typedef enum {
+enum {
     LV_MBOX_STYLE_BG,
     LV_MBOX_STYLE_BTN_BG,
     LV_MBOX_STYLE_BTN_REL,
@@ -66,7 +66,8 @@ typedef enum {
     LV_MBOX_STYLE_BTN_TGL_REL,
     LV_MBOX_STYLE_BTN_TGL_PR,
     LV_MBOX_STYLE_BTN_INA,
-} lv_mbox_style_t;
+};
+typedef uint8_t lv_mbox_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_objx_templ.h b/lv_objx/lv_objx_templ.h
index 17dab72f85..ab6d090661 100644
--- a/lv_objx/lv_objx_templ.h
+++ b/lv_objx/lv_objx_templ.h
@@ -46,10 +46,11 @@ typedef struct {
 
 
 /*Styles*/
-typedef enum {
+enum {
     LV_TEMPL_STYLE_X,
     LV_TEMPL_STYLE_Y,
-} lv_templ_style_t;
+};
+typedef uint8_t lv_templ_style_t;
 
 
 /**********************
diff --git a/lv_objx/lv_page.h b/lv_objx/lv_page.h
index 98cbf21fe1..68b7d20e5c 100644
--- a/lv_objx/lv_page.h
+++ b/lv_objx/lv_page.h
@@ -38,7 +38,7 @@ extern "C" {
  **********************/
 
 /*Scrollbar modes: shows when should the scrollbars be visible*/
-typedef enum
+enum
 {
     LV_SB_MODE_OFF 	= 0x0,   	/*Never show scrollbars*/
     LV_SB_MODE_ON  	= 0x1,   	/*Always show scrollbars*/
@@ -46,7 +46,8 @@ typedef enum
     LV_SB_MODE_AUTO = 0x3,   	/*Show scrollbars when the scrollable container is large enough to be scrolled*/
 	LV_SB_MODE_HIDE = 0x4,	 	/*Hide the scroll bar temporally*/
 	LV_SB_MODE_UNHIDE = 0x5,	/*Unhide the previously hidden scrollbar. Recover it's type too*/
-} lv_sb_mode_t;
+};
+typedef uint8_t lv_sb_mode_t;
 
 /*Data of page*/
 typedef struct
@@ -62,17 +63,17 @@ typedef struct
         lv_area_t ver_area;            /*Vertical scrollbar area relative to the page (Handled by the library)*/
         uint8_t hor_draw :1;        /*1: horizontal scrollbar is visible now (Handled by the library)*/
         uint8_t ver_draw :1;        /*1: vertical scrollbar is visible now (Handled by the library)*/
-        uint8_t mode     :3;        /*Scrollbar visibility from 'lv_page_sb_mode_t'*/
+        lv_sb_mode_t mode     :3;        /*Scrollbar visibility from 'lv_page_sb_mode_t'*/
     } sb;
     uint8_t arrow_scroll :1;		/*1: Enable scrolling with LV_GROUP_KEY_LEFT/RIGHT/UP/DOWN*/
 } lv_page_ext_t;
 
-typedef enum {
+enum {
     LV_PAGE_STYLE_BG,
     LV_PAGE_STYLE_SCRL,
     LV_PAGE_STYLE_SB,
-} lv_page_style_t;
-
+};
+typedef uint8_t lv_page_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_preload.h b/lv_objx/lv_preload.h
index b6200a5fb2..393eea8e7e 100644
--- a/lv_objx/lv_preload.h
+++ b/lv_objx/lv_preload.h
@@ -41,9 +41,10 @@ extern "C" {
  *      TYPEDEFS
  **********************/
 
-typedef enum {
+enum {
     LV_PRELOAD_TYPE_SPINNING_ARC,
-} lv_preloader_type_t;
+};
+typedef uint8_t lv_preloader_type_t;
 
 /*Data of pre loader*/
 typedef struct {
@@ -55,10 +56,10 @@ typedef struct {
 
 
 /*Styles*/
-typedef enum {
+enum {
     LV_PRELOAD_STYLE_MAIN,
-} lv_preload_style_t;
-
+};
+typedef uint8_t lv_preload_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_roller.h b/lv_objx/lv_roller.h
index c99f9b9e49..d0aaed42a0 100644
--- a/lv_objx/lv_roller.h
+++ b/lv_objx/lv_roller.h
@@ -42,10 +42,11 @@ typedef struct {
     /*New data for this type */
 } lv_roller_ext_t;
 
-typedef enum {
+enum {
     LV_ROLLER_STYLE_BG,
     LV_ROLLER_STYLE_SEL,
-} lv_roller_style_t;
+};
+typedef uint8_t lv_roller_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_slider.h b/lv_objx/lv_slider.h
index 8eb2bd2d7b..6336ae8a81 100644
--- a/lv_objx/lv_slider.h
+++ b/lv_objx/lv_slider.h
@@ -48,12 +48,13 @@ typedef struct
 } lv_slider_ext_t;
 
 /*Built-in styles of slider*/
-typedef enum
+enum
 {
     LV_SLIDER_STYLE_BG,
     LV_SLIDER_STYLE_INDIC,
     LV_SLIDER_STYLE_KNOB,
-} lv_slider_style_t;
+};
+typedef uint8_t lv_slider_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_sw.h b/lv_objx/lv_sw.h
index 9a2bb8a5ad..3834c72870 100644
--- a/lv_objx/lv_sw.h
+++ b/lv_objx/lv_sw.h
@@ -46,12 +46,13 @@ typedef struct
     uint8_t changed   :1;           /*Indicates the switch explicitly changed by drag*/
 } lv_sw_ext_t;
 
-typedef enum {
+enum {
     LV_SW_STYLE_BG,
     LV_SW_STYLE_INDIC,
     LV_SW_STYLE_KNOB_OFF,
     LV_SW_STYLE_KNOB_ON,
-} lv_sw_style_t;
+};
+typedef uint8_t lv_sw_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_ta.h b/lv_objx/lv_ta.h
index 9afb1410e9..a3e79ce42b 100644
--- a/lv_objx/lv_ta.h
+++ b/lv_objx/lv_ta.h
@@ -43,14 +43,15 @@ extern "C" {
  *      TYPEDEFS
  **********************/
 
-typedef enum {
+enum {
     LV_CURSOR_NONE,
     LV_CURSOR_LINE,
     LV_CURSOR_BLOCK,
     LV_CURSOR_OUTLINE,
     LV_CURSOR_UNDERLINE,
     LV_CURSOR_HIDDEN = 0x10,    /*Or it to any value to hide the cursor temporally*/
-} lv_cursor_type_t;
+};
+typedef uint16_t lv_cursor_type_t;
 
 /*Data of text area*/
 typedef struct
@@ -72,11 +73,12 @@ typedef struct
     } cursor;
 } lv_ta_ext_t;
 
-typedef enum {
+enum {
     LV_TA_STYLE_BG,
     LV_TA_STYLE_SB,
     LV_TA_STYLE_CURSOR,
-} lv_ta_style_t;
+};
+typedef uint16_t lv_ta_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_tabview.h b/lv_objx/lv_tabview.h
index 67838a826d..da3bfffd93 100644
--- a/lv_objx/lv_tabview.h
+++ b/lv_objx/lv_tabview.h
@@ -65,7 +65,7 @@ typedef struct
     lv_tabview_action_t tab_load_action;
 } lv_tabview_ext_t;
 
-typedef enum {
+enum {
     LV_TABVIEW_STYLE_BG,
     LV_TABVIEW_STYLE_INDIC,
     LV_TABVIEW_STYLE_BTN_BG,
@@ -73,12 +73,14 @@ typedef enum {
     LV_TABVIEW_STYLE_BTN_PR,
     LV_TABVIEW_STYLE_BTN_TGL_REL,
     LV_TABVIEW_STYLE_BTN_TGL_PR,
-} lv_tabview_style_t;
+};
+typedef uint8_t lv_tabview_style_t;
 
-typedef enum {
+enum {
     LV_TABVIEW_BTNS_POS_TOP,
     LV_TABVIEW_BTNS_POS_BOTTOM,
-} lv_tabview_btns_pos_t;
+};
+typedef uint8_t lv_tabview_btns_pos_t;
 
 /**********************
  * GLOBAL PROTOTYPES
diff --git a/lv_objx/lv_win.h b/lv_objx/lv_win.h
index bcd0f49096..9563fd3549 100644
--- a/lv_objx/lv_win.h
+++ b/lv_objx/lv_win.h
@@ -68,7 +68,7 @@ typedef struct
     lv_coord_t btn_size;               /*Size of the control buttons (square)*/
 } lv_win_ext_t;
 
-typedef enum {
+enum {
     LV_WIN_STYLE_BG,
     LV_WIN_STYLE_CONTENT_BG,
     LV_WIN_STYLE_CONTENT_SCRL,
@@ -76,7 +76,8 @@ typedef enum {
     LV_WIN_STYLE_HEADER,
     LV_WIN_STYLE_BTN_REL,
     LV_WIN_STYLE_BTN_PR,
-} lv_win_style_t;
+};
+typedef uint8_t lv_win_style_t;
 
 /**********************
  * GLOBAL PROTOTYPES