Release 0.5.1

Disable lvgl original comments in bindings
We disable the comments generation here because some comments cause the `cargo test` command to fail. Some of the original comments have invalid tokens like `TYPEDEFS` causing issues. We should recommend users to look the original comments in the original lvgl in their C API docs.
2021-03-06 23:37:10 +01:00 · 2021-03-06 21:09:06 +01:00 · 2021-03-06 20:28:44 +01:00
22 changed files with 438 additions and 1280 deletions
--- a/Cargo.toml
+++ b/Cargo.toml
@ -1,6 +1,7 @@
 [workspace]
 members = [
    "lvgl",
-    "lvgl-codegen",
    "lvgl-sys",
+    "lvgl-codegen",
+    "examples"
 ]
--- a/README.md
+++ b/README.md
@ -1,21 +1,18 @@
-[![SWUbanner](https://raw.githubusercontent.com/vshymanskyy/StandWithUkraine/main/banner2-direct.svg)](https://github.com/vshymanskyy/StandWithUkraine/blob/main/docs/README.md)
+<h1 align="center"> LittlevGL - Open-source Embedded GUI Library in Rust</h1>

-<h1 align="center"> LVGL - Open-source Embedded GUI Library in Rust</h1>
-
-![Original LVGL demo image](lv_demo.png)
+![Original LittlevGL demo image](lv_demo.png)

 <p align="center">
-LVGL provides everything you need to create a Graphical User Interface (GUI) on embedded systems with easy-to-use graphical elements, beautiful visual effects and low memory footprint. 
+LittlevGL provides everything you need to create a Graphical User Interface (GUI) on embedded systems with easy-to-use graphical elements, beautiful visual effects and low memory footprint. 
 </p>
 <p align="center">
-LVGL is compatible with <samp>#![no_std]</samp> environments by default.
+LittlevGL is compatible with <samp>#![no_std]</samp> environments by default.
 </p>

 <h4 align="center">
-<a href="https://github.com/rafaelcaricio/lvgl-rs-wasm">Rust to WASM demo</a> &middot;
-<a href="https://lvgl.io/">Official LVGL Website </a> &middot;
+<a href="https://lvgl.io/">Official LittlevGL Website </a> &middot; 
 <a href="https://github.com/littlevgl/lvgl">C library repository</a> &middot;
-<a href="https://lvgl.io/demos">Official live demos</a>
+<a href="https://lvgl.io/demos">Live demo</a>
 </h4>

 ---
@ -45,7 +42,7 @@ $ cargo add lvgl

 The build requires the environment variable bellow to be set:

- `DEP_LV_CONFIG_PATH`: Path to the directory containing the `lv_conf.h` header file used for configuration of LVGL library.
+- `DEP_LV_CONFIG_PATH`: Path to the directory containing the `lv_conf.h` header file used for configuration of LittlevGL library.

 We recommend the `lv_conf.h` file to be in your project's root directory. If so, the command to build your project would be:
 ```shell script
@ -61,17 +58,10 @@ for `no_std`, so we need to use a workaround to build "lvgl-rs". The mainstrem i
 ```shell
 $ DEP_LV_CONFIG_PATH=`pwd` cargo build -Zfeatures=build_dep
 ```
-### LVGL Global Allocator
-
-A [global allocator](https://doc.rust-lang.org/std/alloc/trait.GlobalAlloc.html) for Rust leveraging the
-[LVGL memory allocator](https://github.com/lvgl/lvgl/blob/master/src/misc/lv_mem.h) is provided, but not enabled 
-by default. Can be enabled by the feature `lvgl_alloc`. This will make all dynamic memory to be allocated by LVGL 
-internal memory manager.

 ## Running the demo

-**Hint for macOS users**: Before you run the demos you need to make sure you have [libsdl](https://www.libsdl.org)
-installed on your machine. To install it, use HomeBrew:
+**Hint for macOS users**: Before you run the demos you need to make sure you have [libsdl](https://www.libsdl.org) installed on your machine. To install it, use HomeBrew:

 ```shell
 $ brew install sdl2
@ -88,7 +78,7 @@ $ git submodule update
 Then run the `demo` example:

 ```shell
-$ DEP_LV_CONFIG_PATH=`pwd`/examples/include cargo run --example demo --features="alloc"
+$ DEP_LV_CONFIG_PATH=`pwd`/examples/include cargo run --example demo
 ```

 ## Feature Support
--- a/examples/Cargo.toml
+++ b/examples/Cargo.toml
@ -0,0 +1,34 @@
+[package]
+name = "demo"
+version = "0.1.0"
+authors = ["Rafael Caricio <crates@caric.io>"]
+edition = "2018"
+publish = false
+
+[dev-dependencies]
+lvgl = { path = "../lvgl" }
+lvgl-sys = { path = "../lvgl-sys" }
+embedded-graphics = "0.6"
+embedded-graphics-simulator = "0.2.0"
+heapless = "0.5.5"
+cstr_core = { version = "0.2.0", features = ["alloc"] }
+
+[[example]]
+name = "demo"
+path = "demo.rs"
+
+[[example]]
+name = "bar"
+path = "bar.rs"
+
+[[example]]
+name = "button_click"
+path = "button_click.rs"
+
+[[example]]
+name = "gauge"
+path = "gauge.rs"
+
+[[example]]
+name = "arc"
+path = "arc.rs"
--- a/examples/arc.rs
+++ b/examples/arc.rs
@ -11,31 +11,7 @@ use lvgl::{LvError, Widget};
 use lvgl_sys;
 use std::time::Instant;

-fn mem_info() -> lvgl_sys::lv_mem_monitor_t {
-    let mut info = lvgl_sys::lv_mem_monitor_t {
-        total_size: 0,
-        free_cnt: 0,
-        free_size: 0,
-        free_biggest_size: 0,
-        used_cnt: 0,
-        max_used: 0,
-        used_pct: 0,
-        frag_pct: 0,
-    };
-    unsafe {
-        lvgl_sys::lv_mem_monitor(&mut info as *mut _);
-    }
-    info
-}
-
 fn main() -> Result<(), LvError> {
-    println!("meminfo init: {:?}", mem_info());
-    run_arc_demo()?;
-    println!("meminfo end: {:?}", mem_info());
-    Ok(())
-}
-
-fn run_arc_demo() -> Result<(), LvError> {
    let display: SimulatorDisplay<Rgb565> = SimulatorDisplay::new(Size::new(
        lvgl_sys::LV_HOR_RES_MAX,
        lvgl_sys::LV_VER_RES_MAX,
@ -82,7 +58,6 @@ fn run_arc_demo() -> Result<(), LvError> {
        if i > 270 {
            forward = if forward { false } else { true };
            i = 1;
-            println!("meminfo running: {:?}", mem_info());
        }
        angle = if forward { angle + 1 } else { angle - 1 };
        arc.set_end_angle(angle + 135)?;
--- a/examples/demo.rs
+++ b/examples/demo.rs
@ -1,4 +1,4 @@
-use cstr_core::CString;
+use cstr_core::{CStr, CString};
 use embedded_graphics::pixelcolor::Rgb565;
 use embedded_graphics::prelude::*;
 use embedded_graphics_simulator::{
@ -52,6 +52,20 @@ fn main() -> Result<(), LvError> {
    bt.set_label_align(LabelAlign::Left)?;
    bt.set_align(&mut screen, Align::InTopLeft, 0, 0)?;

+    fn set_text<S>(text: S) -> Result<(), ()>
+    where
+        S: AsRef<cstr_core::CStr>,
+    {
+        let _v: *const i8 = text.as_ref().as_ptr();
+        Ok(())
+    }
+
+    let mut t: heapless::String<heapless::consts::U8> = heapless::String::from("test");
+    t.push('\0').unwrap();
+    set_text(CStr::from_bytes_with_nul(t.as_bytes()).unwrap()).unwrap();
+    set_text(cstr_core::CStr::from_bytes_with_nul("test\0".as_bytes()).unwrap()).unwrap();
+    set_text(cstr_core::CString::new("test").unwrap().as_c_str()).unwrap();
+
    let mut power = Label::new(&mut screen)?;
    power.set_recolor(true)?;
    power.set_width(80)?;
@ -66,8 +80,8 @@ fn main() -> Result<(), LvError> {
        if i > 59 {
            i = 0;
        }
-        let val = CString::new(format!("21:{:02}", i)).unwrap();
-        time.set_text(&val)?;
+        let val = format!("21:{:02}", i);
+        time.set_text(CString::new(val.as_str()).unwrap().as_c_str())?;
        i = 1 + i;

        ui.task_handler();
@ -88,7 +102,7 @@ fn main() -> Result<(), LvError> {
    Ok(())
 }

-// Reference to native font for LVGL, defined in the file: "fonts_noto_sans_numeric_80.c"
+// Reference to native font for LittlevGL, defined in the file: "fonts_noto_sans_numeric_80.c"
 // TODO: Create a macro for defining a safe wrapper for fonts.
 // Maybe sometihng like:
 //
--- a/examples/include/lv_conf.h
+++ b/examples/include/lv_conf.h
@ -80,7 +80,7 @@ typedef int16_t lv_coord_t;
 #define LV_MEM_CUSTOM      0
 #if LV_MEM_CUSTOM == 0
 /* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
-#  define LV_MEM_SIZE    (1048576U) // 1Mb
+#  define LV_MEM_SIZE    (32U * 1024U)

 /* Complier prefix for a big array declaration */
 #  define LV_MEM_ATTR
--- a/lvgl-codegen/Cargo.toml
+++ b/lvgl-codegen/Cargo.toml
@ -1,7 +1,7 @@
 [package]
 name = "lvgl-codegen"
-version = "0.5.2"
-description = "Code generation based on LVGL source code"
+version = "0.5.1"
+description = "Code1generation based on LVGL source code"
 authors = ["Rafael Caricio <crates.lvgl@caric.io>"]
 readme = "README.md"
 edition = "2018"
@ -9,10 +9,10 @@ license = "MIT"
 repository = "https://github.com/rafaelcaricio/lvgl-rs"

 [dependencies]
-regex = "1.4.3"
-quote = "1.0.9"
+regex = "1.3.9"
+quote = "1.0.7"
 lazy_static = "1.4.0"
-proc-macro2 = "1.0.27"
+proc-macro2 = "1.0.18"
 Inflector = "0.11.4"
-syn = { version = "1.0.72", features = ["full"]}
+syn = { version = "1.0.31", features = ["full"]}

--- a/lvgl-codegen/src/lib.rs
+++ b/lvgl-codegen/src/lib.rs
@ -1,8 +1,8 @@
 use inflector::cases::pascalcase::to_pascal_case;
 use lazy_static::lazy_static;
 use proc_macro2::{Ident, TokenStream};
-use quote::quote;
 use quote::{format_ident, ToTokens};
+use quote::quote;
 use regex::Regex;
 use std::collections::HashMap;
 use std::error::Error;
@ -303,21 +303,21 @@ impl Rusty for LvArg {
 #[derive(Clone)]
 pub struct LvType {
    literal_name: String,
-    _r_type: Option<Box<syn::Type>>,
+    r_type: Option<Box<syn::Type>>,
 }

 impl LvType {
    pub fn new(literal_name: String) -> Self {
        Self {
            literal_name,
-            _r_type: None,
+            r_type: None,
        }
    }

    pub fn from(r_type: Box<syn::Type>) -> Self {
        Self {
            literal_name: r_type.to_token_stream().to_string(),
-            _r_type: Some(r_type),
+            r_type: Some(r_type),
        }
    }

--- a/lvgl-sys/Cargo.toml
+++ b/lvgl-sys/Cargo.toml
@ -1,7 +1,7 @@
 [package]
 name = "lvgl-sys"
-description = "Raw bindings to the LVGL C library."
-version = "0.5.2"
+description = "Raw bindings to the LittlevGL C library."
+version = "0.5.1"
 authors = ["Rafael Caricio <crates.lvgl-sys@caric.io>"]
 edition = "2018"
 license = "MIT"
@ -20,8 +20,5 @@ name = "lvgl_sys"
 cty = "0.2.1"

 [build-dependencies]
-cc = "1.0.68"
-bindgen = "0.59.2"
-
-[features]
-use-vendored-config = []
+cc = "1.0.50"
+bindgen = "0.54.0"
--- a/lvgl-sys/README.md
+++ b/lvgl-sys/README.md
@ -5,7 +5,7 @@ Rust raw bindings for LittlevGL library.

 Build requires environment variables to be set:

- `DEP_LV_CONFIG_PATH`: Path to the directory containing the `lv_conf.h` header file used for configuration of LVGL library.
+- `DEP_LV_CONFIG_PATH`: Path to the directory containing the `lv_conf.h` header file used for configuration of LittlevGL library.

 We recommend the `lv_conf.h` file to be in your project's root directory. If so, the command to build your project would be:
 ```shell script
--- a/lvgl-sys/build.rs
+++ b/lvgl-sys/build.rs
@ -4,50 +4,43 @@ use std::{env, path::Path, path::PathBuf};
 static CONFIG_NAME: &str = "DEP_LV_CONFIG_PATH";

 fn main() {
-    let project_dir = canonicalize(PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap()));
+    let project_dir = PathBuf::from(env::var("CARGO_MANIFEST_DIR").unwrap())
+        .canonicalize()
+        .unwrap();
    let shims_dir = project_dir.join("shims");
    let vendor = project_dir.join("vendor");
    let vendor_src = vendor.join("lvgl").join("src");

    let lv_config_dir = {
-        let conf_path = env::var(CONFIG_NAME)
-            .map(PathBuf::from)
-            .unwrap_or_else(|_| {
+        let conf_path = env::var(CONFIG_NAME).map(|raw_path| PathBuf::from(raw_path)).unwrap_or_else(|_| {
                match std::env::var("DOCS_RS") {
                    Ok(_) => {
                        // We've detected that we are building for docs.rs
-                        // so let's use the vendored `lv_conf.h` file.
-                        vendor.join("include")
+                        // so let's set the examples `lv_conf.h` file.
+                        project_dir.join("..").join("examples").join("include")
                    }
-                    Err(_) => {
-                        #[cfg(not(feature = "use-vendored-config"))]
-                        panic!(
-                            "The environment variable {} is required to be defined",
-                            CONFIG_NAME
-                        );
-
-                        #[cfg(feature = "use-vendored-config")]
-                        vendor.join("include")
-                    }
-                }
-            });
+                    Err(_) => panic!(
+                        "The environment variable {} is required to be defined",
+                        CONFIG_NAME
+                    )
+            }
+        });

        if !conf_path.exists() {
-            panic!(
+            panic!(format!(
                "Directory {} referenced by {} needs to exist",
                conf_path.to_string_lossy(),
                CONFIG_NAME
-            );
+            ));
        }
        if !conf_path.is_dir() {
-            panic!("{} needs to be a directory", CONFIG_NAME);
+            panic!(format!("{} needs to be a directory", CONFIG_NAME));
        }
        if !conf_path.join("lv_conf.h").exists() {
-            panic!(
-                "Directory {} referenced by {} needs to contain a file called lv_conf.h",
-                conf_path.to_string_lossy(),
+            panic!(format!(
+                "Directory referenced by {} needs to contain a file called lv_conf.h",
                CONFIG_NAME
-            );
+            ));
        }

        println!(
@ -97,20 +90,11 @@ fn main() {
    if target.ends_with("emscripten") {
        if let Ok(em_path) = env::var("EMSDK") {
            additional_args.push("-I".to_string());
-            additional_args.push(format!(
-                "{}/upstream/emscripten/system/include/libc",
-                em_path
-            ));
+            additional_args.push(format!("{}/upstream/emscripten/system/include/libc", em_path));
            additional_args.push("-I".to_string());
-            additional_args.push(format!(
-                "{}/upstream/emscripten/system/lib/libc/musl/arch/emscripten",
-                em_path
-            ));
+            additional_args.push(format!("{}/upstream/emscripten/system/lib/libc/musl/arch/emscripten", em_path));
            additional_args.push("-I".to_string());
-            additional_args.push(format!(
-                "{}/upstream/emscripten/system/include/SDL",
-                em_path
-            ));
+            additional_args.push(format!("{}/upstream/emscripten/system/include/SDL", em_path));
        }
    }

@ -127,8 +111,7 @@ fn main() {
        .generate()
        .expect("Unable to generate bindings");

-    bindings
-        .write_to_file(out_path.join("bindings.rs"))
+    bindings.write_to_file(out_path.join("bindings.rs"))
        .expect("Can't write bindings!");
 }

@ -143,10 +126,3 @@ fn add_c_files(build: &mut cc::Build, path: impl AsRef<Path>) {
        }
    }
 }
-
-fn canonicalize(path: impl AsRef<Path>) -> PathBuf {
-    let canonicalized = path.as_ref().canonicalize().unwrap();
-    let canonicalized = &*canonicalized.to_string_lossy();
-
-    PathBuf::from(canonicalized.strip_prefix(r"\\?\").unwrap_or(canonicalized))
-}
--- a/lvgl-sys/src/lib.rs
+++ b/lvgl-sys/src/lib.rs
@ -23,10 +23,10 @@ mod tests {
            lv_init();

            let horizontal_resolution = lv_disp_get_hor_res(core::ptr::null_mut());
-            assert_eq!(horizontal_resolution, LV_HOR_RES_MAX as i16);
+            assert_eq!(horizontal_resolution, 240);

            let vertical_resolution = lv_disp_get_ver_res(core::ptr::null_mut());
-            assert_eq!(vertical_resolution, LV_VER_RES_MAX as i16);
+            assert_eq!(vertical_resolution, 240);
        }
    }
 }
--- a/lvgl-sys/vendor/include/lv_conf.h
+++ b/lvgl-sys/vendor/include/lv_conf.h
@ -1,701 +0,0 @@
-/**
- * @file lv_conf.h
- *
- */
-
-/*
- * COPY THIS FILE AS `lv_conf.h` NEXT TO the `lvgl` FOLDER
- */
-
-#if 1 /*Set it to "1" to enable content*/
-
-#ifndef LV_CONF_H
-#define LV_CONF_H
-/* clang-format off */
-
-#include <stdint.h>
-
-/*====================
-   Graphical settings
- *====================*/
-
-/* Maximal horizontal and vertical resolution to support by the library.*/
-#define LV_HOR_RES_MAX          (240)
-#define LV_VER_RES_MAX          (240)
-
-/* Color depth:
- * - 1:  1 byte per pixel
- * - 8:  RGB332
- * - 16: RGB565
- * - 32: ARGB8888
- */
-#define LV_COLOR_DEPTH     16
-
-/* Swap the 2 bytes of RGB565 color.
- * Useful if the display has a 8 bit interface (e.g. SPI)*/
-#define LV_COLOR_16_SWAP   0
-
-/* 1: Enable screen transparency.
- * Useful for OSD or other overlapping GUIs.
- * Requires `LV_COLOR_DEPTH = 32` colors and the screen's style should be modified: `style.body.opa = ...`*/
-#define LV_COLOR_SCREEN_TRANSP    0
-
-/*Images pixels with this color will not be drawn (with chroma keying)*/
-#define LV_COLOR_TRANSP    LV_COLOR_LIME         /*LV_COLOR_LIME: pure green*/
-
-/* Enable anti-aliasing (lines, and radiuses will be smoothed) */
-#define LV_ANTIALIAS        1
-
-/* Default display refresh period.
- * Can be changed in the display driver (`lv_disp_drv_t`).*/
-#define LV_DISP_DEF_REFR_PERIOD      30      /*[ms]*/
-
-/* Dot Per Inch: used to initialize default sizes.
- * E.g. a button with width = LV_DPI / 2 -> half inch wide
- * (Not so important, you can adjust it to modify default sizes and spaces)*/
-#define LV_DPI              130     /*[px]*/
-
-/* The the real width of the display changes some default values:
- * default object sizes, layout of examples, etc.
- * According to the width of the display (hor. res. / dpi)
- * the displays fall in 4 categories.
- * The 4th is extra large which has no upper limit so not listed here
- * The upper limit of the categories are set below in 0.1 inch unit.
- */
-#define LV_DISP_SMALL_LIMIT  30
-#define LV_DISP_MEDIUM_LIMIT 50
-#define LV_DISP_LARGE_LIMIT  70
-
-/* Type of coordinates. Should be `int16_t` (or `int32_t` for extreme cases) */
-typedef int16_t lv_coord_t;
-
-/*=========================
-   Memory manager settings
- *=========================*/
-
-/* LittelvGL's internal memory manager's settings.
- * The graphical objects and other related data are stored here. */
-
-/* 1: use custom malloc/free, 0: use the built-in `lv_mem_alloc` and `lv_mem_free` */
-#define LV_MEM_CUSTOM      0
-#if LV_MEM_CUSTOM == 0
-/* Size of the memory used by `lv_mem_alloc` in bytes (>= 2kB)*/
-#  define LV_MEM_SIZE    (32U * 1024U)
-
-/* Complier prefix for a big array declaration */
-#  define LV_MEM_ATTR
-
-/* Set an address for the memory pool instead of allocating it as an array.
- * Can be in external SRAM too. */
-#  define LV_MEM_ADR          0
-
-/* Automatically defrag. on free. Defrag. means joining the adjacent free cells. */
-#  define LV_MEM_AUTO_DEFRAG  1
-#else       /*LV_MEM_CUSTOM*/
-#  define LV_MEM_CUSTOM_INCLUDE <stdlib.h>   /*Header for the dynamic memory function*/
-#  define LV_MEM_CUSTOM_ALLOC   malloc       /*Wrapper to malloc*/
-#  define LV_MEM_CUSTOM_FREE    free         /*Wrapper to free*/
-#endif     /*LV_MEM_CUSTOM*/
-
-/* Garbage Collector settings
- * Used if lvgl is binded to higher level language and the memory is managed by that language */
-#define LV_ENABLE_GC 0
-#if LV_ENABLE_GC != 0
-#  define LV_GC_INCLUDE "gc.h"                           /*Include Garbage Collector related things*/
-#  define LV_MEM_CUSTOM_REALLOC   your_realloc           /*Wrapper to realloc*/
-#  define LV_MEM_CUSTOM_GET_SIZE  your_mem_get_size      /*Wrapper to lv_mem_get_size*/
-#endif /* LV_ENABLE_GC */
-
-/*=======================
-   Input device settings
- *=======================*/
-
-/* Input device default settings.
- * Can be changed in the Input device driver (`lv_indev_drv_t`)*/
-
-/* Input device read period in milliseconds */
-#define LV_INDEV_DEF_READ_PERIOD          30
-
-/* Drag threshold in pixels */
-#define LV_INDEV_DEF_DRAG_LIMIT           10
-
-/* Drag throw slow-down in [%]. Greater value -> faster slow-down */
-#define LV_INDEV_DEF_DRAG_THROW           10
-
-/* Long press time in milliseconds.
- * Time to send `LV_EVENT_LONG_PRESSSED`) */
-#define LV_INDEV_DEF_LONG_PRESS_TIME      400
-
-/* Repeated trigger period in long press [ms]
- * Time between `LV_EVENT_LONG_PRESSED_REPEAT */
-#define LV_INDEV_DEF_LONG_PRESS_REP_TIME  100
-
-
-/* Gesture threshold in pixels */
-#define LV_INDEV_DEF_GESTURE_LIMIT        50
-
-/* Gesture min velocity at release before swipe (pixels)*/
-#define LV_INDEV_DEF_GESTURE_MIN_VELOCITY 3
-
-/*==================
- * Feature usage
- *==================*/
-
-/*1: Enable the Animations */
-#define LV_USE_ANIMATION        1
-#if LV_USE_ANIMATION
-
-/*Declare the type of the user data of animations (can be e.g. `void *`, `int`, `struct`)*/
-typedef void * lv_anim_user_data_t;
-
-#endif
-
-/* 1: Enable shadow drawing*/
-#define LV_USE_SHADOW           1
-#if LV_USE_SHADOW
-/* Allow buffering some shadow calculation
- * LV_SHADOW_CACHE_SIZE is the max. shadow size to buffer,
- * where shadow size is `shadow_width + radius`
- * Caching has LV_SHADOW_CACHE_SIZE^2 RAM cost*/
-#define LV_SHADOW_CACHE_SIZE    0
-#endif
-
-/* 1: Use other blend modes than normal (`LV_BLEND_MODE_...`)*/
-#define LV_USE_BLEND_MODES      1
-
-/* 1: Use the `opa_scale` style property to set the opacity of an object and its children at once*/
-#define LV_USE_OPA_SCALE        1
-
-/* 1: Use image zoom and rotation*/
-#define LV_USE_IMG_TRANSFORM    1
-
-/* 1: Enable object groups (for keyboard/encoder navigation) */
-#define LV_USE_GROUP            1
-#if LV_USE_GROUP
-typedef void * lv_group_user_data_t;
-#endif  /*LV_USE_GROUP*/
-
-/* 1: Enable GPU interface*/
-#define LV_USE_GPU              1   /*Only enables `gpu_fill_cb` and `gpu_blend_cb` in the disp. drv- */
-#define LV_USE_GPU_STM32_DMA2D  0
-
-/* 1: Enable file system (might be required for images */
-#define LV_USE_FILESYSTEM       1
-#if LV_USE_FILESYSTEM
-/*Declare the type of the user data of file system drivers (can be e.g. `void *`, `int`, `struct`)*/
-typedef void * lv_fs_drv_user_data_t;
-#endif
-
-/*1: Add a `user_data` to drivers and objects*/
-#define LV_USE_USER_DATA        1
-
-/*1: Show CPU usage and FPS count in the right bottom corner*/
-#define LV_USE_PERF_MONITOR     0
-
-/*1: Use the functions and types from the older API if possible */
-#define LV_USE_API_EXTENSION_V6  1
-
-/*========================
- * Image decoder and cache
- *========================*/
-
-/* 1: Enable indexed (palette) images */
-#define LV_IMG_CF_INDEXED       1
-
-/* 1: Enable alpha indexed images */
-#define LV_IMG_CF_ALPHA         1
-
-/* Default image cache size. Image caching keeps the images opened.
- * If only the built-in image formats are used there is no real advantage of caching.
- * (I.e. no new image decoder is added)
- * With complex image decoders (e.g. PNG or JPG) caching can save the continuous open/decode of images.
- * However the opened images might consume additional RAM.
- * LV_IMG_CACHE_DEF_SIZE must be >= 1 */
-#define LV_IMG_CACHE_DEF_SIZE       1
-
-/*Declare the type of the user data of image decoder (can be e.g. `void *`, `int`, `struct`)*/
-typedef void * lv_img_decoder_user_data_t;
-
-/*=====================
- *  Compiler settings
- *====================*/
-/* Define a custom attribute to `lv_tick_inc` function */
-#define LV_ATTRIBUTE_TICK_INC
-
-/* Define a custom attribute to `lv_task_handler` function */
-#define LV_ATTRIBUTE_TASK_HANDLER
-
-/* Define a custom attribute to `lv_disp_flush_ready` function */
-#define LV_ATTRIBUTE_FLUSH_READY
-
-/* With size optimization (-Os) the compiler might not align data to
- * 4 or 8 byte boundary. This alignment will be explicitly applied where needed.
- * E.g. __attribute__((aligned(4))) */
-#define LV_ATTRIBUTE_MEM_ALIGN
-
-/* Attribute to mark large constant arrays for example
- * font's bitmaps */
-#define LV_ATTRIBUTE_LARGE_CONST
-
-/* Prefix performance critical functions to place them into a faster memory (e.g RAM)
- * Uses 15-20 kB extra memory */
-#define LV_ATTRIBUTE_FAST_MEM
-
-/* Export integer constant to binding.
- * This macro is used with constants in the form of LV_<CONST> that
- * should also appear on lvgl binding API such as Micropython
- *
- * The default value just prevents a GCC warning.
- */
-#define LV_EXPORT_CONST_INT(int_value) struct _silence_gcc_warning
-
-/*===================
- *  HAL settings
- *==================*/
-
-/* 1: use a custom tick source.
- * It removes the need to manually update the tick with `lv_tick_inc`) */
-#define LV_TICK_CUSTOM     0
-#if LV_TICK_CUSTOM == 1
-#define LV_TICK_CUSTOM_INCLUDE  "something.h"       /*Header for the sys time function*/
-#define LV_TICK_CUSTOM_SYS_TIME_EXPR (millis())     /*Expression evaluating to current systime in ms*/
-#endif   /*LV_TICK_CUSTOM*/
-
-typedef void * lv_disp_drv_user_data_t;             /*Type of user data in the display driver*/
-typedef void * lv_indev_drv_user_data_t;            /*Type of user data in the input device driver*/
-
-/*================
- * Log settings
- *===============*/
-
-/*1: Enable the log module*/
-#define LV_USE_LOG      0
-#if LV_USE_LOG
-/* How important log should be added:
- * 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 cause a problem
- * LV_LOG_LEVEL_ERROR       Only critical issue, when the system may fail
- * LV_LOG_LEVEL_NONE        Do not log anything
- */
-#  define LV_LOG_LEVEL    LV_LOG_LEVEL_WARN
-
-/* 1: Print the log with 'printf';
- * 0: user need to register a callback with `lv_log_register_print_cb`*/
-#  define LV_LOG_PRINTF   0
-#endif  /*LV_USE_LOG*/
-
-/*=================
- * Debug settings
- *================*/
-
-/* If Debug is enabled LittelvGL validates the parameters of the functions.
- * If an invalid parameter is found an error log message is printed and
- * the MCU halts at the error. (`LV_USE_LOG` should be enabled)
- * If you are debugging the MCU you can pause
- * the debugger to see exactly where  the issue is.
- *
- * The behavior of asserts can be overwritten by redefining them here.
- * E.g. #define LV_ASSERT_MEM(p)  <my_assert_code>
- */
-#define LV_USE_DEBUG        1
-#if LV_USE_DEBUG
-
-/*Check if the parameter is NULL. (Quite fast) */
-#define LV_USE_ASSERT_NULL      1
-
-/*Checks is the memory is successfully allocated or no. (Quite fast)*/
-#define LV_USE_ASSERT_MEM       1
-
-/*Check the integrity of `lv_mem` after critical operations. (Slow)*/
-#define LV_USE_ASSERT_MEM_INTEGRITY       0
-
-/* Check the strings.
- * Search for NULL, very long strings, invalid characters, and unnatural repetitions. (Slow)
- * If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
-#define LV_USE_ASSERT_STR       0
-
-/* Check NULL, the object's type and existence (e.g. not deleted). (Quite slow)
- * If disabled `LV_USE_ASSERT_NULL` will be performed instead (if it's enabled) */
-#define LV_USE_ASSERT_OBJ       0
-
-/*Check if the styles are properly initialized. (Fast)*/
-#define LV_USE_ASSERT_STYLE     0
-
-#endif /*LV_USE_DEBUG*/
-
-/*==================
- *    FONT USAGE
- *===================*/
-
-/* The built-in fonts contains the ASCII range and some Symbols with  4 bit-per-pixel.
- * The symbols are available via `LV_SYMBOL_...` defines
- * More info about fonts: https://docs.lvgl.com/#Fonts
- * To create a new font go to: https://lvgl.com/ttf-font-to-c-array
- */
-
-/* Montserrat fonts with bpp = 4
- * https://fonts.google.com/specimen/Montserrat  */
-#define LV_FONT_MONTSERRAT_12    0
-#define LV_FONT_MONTSERRAT_14    0
-#define LV_FONT_MONTSERRAT_16    1
-#define LV_FONT_MONTSERRAT_18    0
-#define LV_FONT_MONTSERRAT_20    0
-#define LV_FONT_MONTSERRAT_22    0
-#define LV_FONT_MONTSERRAT_24    0
-#define LV_FONT_MONTSERRAT_26    0
-#define LV_FONT_MONTSERRAT_28    0
-#define LV_FONT_MONTSERRAT_30    0
-#define LV_FONT_MONTSERRAT_32    0
-#define LV_FONT_MONTSERRAT_34    0
-#define LV_FONT_MONTSERRAT_36    0
-#define LV_FONT_MONTSERRAT_38    0
-#define LV_FONT_MONTSERRAT_40    0
-#define LV_FONT_MONTSERRAT_42    0
-#define LV_FONT_MONTSERRAT_44    0
-#define LV_FONT_MONTSERRAT_46    0
-#define LV_FONT_MONTSERRAT_48    0
-
-/* Demonstrate special features */
-#define LV_FONT_MONTSERRAT_12_SUBPX      0
-#define LV_FONT_MONTSERRAT_28_COMPRESSED 0  /*bpp = 3*/
-#define LV_FONT_DEJAVU_16_PERSIAN_HEBREW 0  /*Hebrew, Arabic, PErisan letters and all their forms*/
-#define LV_FONT_SIMSUN_16_CJK            0  /*1000 most common CJK radicals*/
-
-/*Pixel perfect monospace font
- * http://pelulamu.net/unscii/ */
-#define LV_FONT_UNSCII_8     0
-
-/* Optionally declare your custom fonts here.
- * You can use these fonts as default font too
- * and they will be available globally. E.g.
- * #define LV_FONT_CUSTOM_DECLARE LV_FONT_DECLARE(my_font_1) \
- *                                LV_FONT_DECLARE(my_font_2)
- */
-#define LV_FONT_CUSTOM_DECLARE
-
-/* Enable it if you have fonts with a lot of characters.
- * The limit depends on the font size, font face and bpp
- * but with > 10,000 characters if you see issues probably you need to enable it.*/
-#define LV_FONT_FMT_TXT_LARGE   0
-
-/* Set the pixel order of the display.
- * Important only if "subpx fonts" are used.
- * With "normal" font it doesn't matter.
- */
-#define LV_FONT_SUBPX_BGR    0
-
-/*Declare the type of the user data of fonts (can be e.g. `void *`, `int`, `struct`)*/
-typedef void * lv_font_user_data_t;
-
-/*================
- *  THEME USAGE
- *================*/
-
-/*Always enable at least on theme*/
-
-/* No theme, you can apply your styles as you need
- * No flags. Set LV_THEME_DEFAULT_FLAG 0 */
- #define LV_USE_THEME_EMPTY       1
-
-/*Simple to the create your theme based on it
- * No flags. Set LV_THEME_DEFAULT_FLAG 0 */
- #define LV_USE_THEME_TEMPLATE    1
-
-/* A fast and impressive theme.
- * Flags:
- * LV_THEME_MATERIAL_FLAG_LIGHT: light theme
- * LV_THEME_MATERIAL_FLAG_DARK: dark theme*/
- #define LV_USE_THEME_MATERIAL    1
-
-/* Mono-color theme for monochrome displays.
- * If LV_THEME_DEFAULT_COLOR_PRIMARY is LV_COLOR_BLACK the
- * texts and borders will be black and the background will be
- * white. Else the colors are inverted.
- * No flags. Set LV_THEME_DEFAULT_FLAG 0 */
- #define LV_USE_THEME_MONO        1
-
-#define LV_THEME_DEFAULT_INCLUDE            <stdint.h>      /*Include a header for the init. function*/
-#define LV_THEME_DEFAULT_INIT               lv_theme_material_init
-#define LV_THEME_DEFAULT_COLOR_PRIMARY      LV_COLOR_RED
-#define LV_THEME_DEFAULT_COLOR_SECONDARY    LV_COLOR_BLUE
-#define LV_THEME_DEFAULT_FLAG               LV_THEME_MATERIAL_FLAG_LIGHT
-#define LV_THEME_DEFAULT_FONT_SMALL         &lv_font_montserrat_16
-#define LV_THEME_DEFAULT_FONT_NORMAL        &lv_font_montserrat_16
-#define LV_THEME_DEFAULT_FONT_SUBTITLE      &lv_font_montserrat_16
-#define LV_THEME_DEFAULT_FONT_TITLE         &lv_font_montserrat_16
-
-/*=================
- *  Text settings
- *=================*/
-
-/* Select a character encoding for strings.
- * Your IDE or editor should have the same character encoding
- * - LV_TXT_ENC_UTF8
- * - LV_TXT_ENC_ASCII
- * */
-#define LV_TXT_ENC LV_TXT_ENC_UTF8
-
- /*Can break (wrap) texts on these chars*/
-#define LV_TXT_BREAK_CHARS                  " ,.;:-_"
-
-/* If a word is at least this long, will break wherever "prettiest"
- * To disable, set to a value <= 0 */
-#define LV_TXT_LINE_BREAK_LONG_LEN          0
-
-/* Minimum number of characters in a long word to put on a line before a break.
- * Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
-#define LV_TXT_LINE_BREAK_LONG_PRE_MIN_LEN  3
-
-/* Minimum number of characters in a long word to put on a line after a break.
- * Depends on LV_TXT_LINE_BREAK_LONG_LEN. */
-#define LV_TXT_LINE_BREAK_LONG_POST_MIN_LEN 3
-
-/* The control character to use for signalling text recoloring. */
-#define LV_TXT_COLOR_CMD "#"
-
-/* Support bidirectional texts.
- * Allows mixing Left-to-Right and Right-to-Left texts.
- * The direction will be processed according to the Unicode Bidirectioanl Algorithm:
- * https://www.w3.org/International/articles/inline-bidi-markup/uba-basics*/
-#define LV_USE_BIDI     0
-#if LV_USE_BIDI
-/* Set the default direction. Supported values:
- * `LV_BIDI_DIR_LTR` Left-to-Right
- * `LV_BIDI_DIR_RTL` Right-to-Left
- * `LV_BIDI_DIR_AUTO` detect texts base direction */
-#define LV_BIDI_BASE_DIR_DEF  LV_BIDI_DIR_AUTO
-#endif
-
-/* Enable Arabic/Persian processing
- * In these languages characters should be replaced with
- * an other form based on their position in the text */
-#define LV_USE_ARABIC_PERSIAN_CHARS 0
-
-/*Change the built in (v)snprintf functions*/
-#define LV_SPRINTF_CUSTOM   0
-#if LV_SPRINTF_CUSTOM
-#  define LV_SPRINTF_INCLUDE <stdio.h>
-#  define lv_snprintf     snprintf
-#  define lv_vsnprintf    vsnprintf
-#else   /*!LV_SPRINTF_CUSTOM*/
-#  define LV_SPRINTF_DISABLE_FLOAT 1
-#endif  /*LV_SPRINTF_CUSTOM*/
-
-/*===================
- *  LV_OBJ SETTINGS
- *==================*/
-
-#if LV_USE_USER_DATA
-/*Declare the type of the user data of object (can be e.g. `void *`, `int`, `struct`)*/
-typedef void * lv_obj_user_data_t;
-/*Provide a function to free user data*/
-#define LV_USE_USER_DATA_FREE 0
-#if LV_USE_USER_DATA_FREE
-#  define LV_USER_DATA_FREE_INCLUDE  "something.h"  /*Header for user data free function*/
-/* Function prototype : void user_data_free(lv_obj_t * obj); */
-#  define LV_USER_DATA_FREE  (user_data_free)       /*Invoking for user data free function*/
-#endif
-#endif
-
-/*1: enable `lv_obj_realaign()` based on `lv_obj_align()` parameters*/
-#define LV_USE_OBJ_REALIGN          1
-
-/* Enable to make the object clickable on a larger area.
- * LV_EXT_CLICK_AREA_OFF or 0: Disable this feature
- * LV_EXT_CLICK_AREA_TINY: The extra area can be adjusted horizontally and vertically (0..255 px)
- * LV_EXT_CLICK_AREA_FULL: The extra area can be adjusted in all 4 directions (-32k..+32k px)
- */
-#define LV_USE_EXT_CLICK_AREA  LV_EXT_CLICK_AREA_TINY
-
-/*==================
- *  LV OBJ X USAGE
- *================*/
-/*
- * Documentation of the object types: https://docs.lvgl.com/#Object-types
- */
-
-/*Arc (dependencies: -)*/
-#define LV_USE_ARC      1
-
-/*Bar (dependencies: -)*/
-#define LV_USE_BAR      1
-
-/*Button (dependencies: lv_cont*/
-#define LV_USE_BTN      1
-
-/*Button matrix (dependencies: -)*/
-#define LV_USE_BTNMATRIX     1
-
-/*Calendar (dependencies: -)*/
-#define LV_USE_CALENDAR 1
-
-/*Canvas (dependencies: lv_img)*/
-#define LV_USE_CANVAS   1
-
-/*Check box (dependencies: lv_btn, lv_label)*/
-#define LV_USE_CHECKBOX       1
-
-/*Chart (dependencies: -)*/
-#define LV_USE_CHART    1
-#if LV_USE_CHART
-#  define LV_CHART_AXIS_TICK_LABEL_MAX_LEN    256
-#endif
-
-/*Container (dependencies: -*/
-#define LV_USE_CONT     1
-
-/*Color picker (dependencies: -*/
-#define LV_USE_CPICKER   1
-
-/*Drop down list (dependencies: lv_page, lv_label, lv_symbol_def.h)*/
-#define LV_USE_DROPDOWN    1
-#if LV_USE_DROPDOWN != 0
-/*Open and close default animation time [ms] (0: no animation)*/
-#  define LV_DROPDOWN_DEF_ANIM_TIME     200
-#endif
-
-/*Gauge (dependencies:lv_bar, lv_linemeter)*/
-#define LV_USE_GAUGE    1
-
-/*Image (dependencies: lv_label*/
-#define LV_USE_IMG      1
-
-/*Image Button (dependencies: lv_btn*/
-#define LV_USE_IMGBTN   1
-#if LV_USE_IMGBTN
-/*1: The imgbtn requires left, mid and right parts and the width can be set freely*/
-#  define LV_IMGBTN_TILED 0
-#endif
-
-/*Keyboard (dependencies: lv_btnm)*/
-#define LV_USE_KEYBOARD       1
-
-/*Label (dependencies: -*/
-#define LV_USE_LABEL    1
-#if LV_USE_LABEL != 0
-/*Hor, or ver. scroll speed [px/sec] in 'LV_LABEL_LONG_ROLL/ROLL_CIRC' mode*/
-#  define LV_LABEL_DEF_SCROLL_SPEED       25
-
-/* Waiting period at beginning/end of animation cycle */
-#  define LV_LABEL_WAIT_CHAR_COUNT        3
-
-/*Enable selecting text of the label */
-#  define LV_LABEL_TEXT_SEL               0
-
-/*Store extra some info in labels (12 bytes) to speed up drawing of very long texts*/
-#  define LV_LABEL_LONG_TXT_HINT          0
-#endif
-
-/*LED (dependencies: -)*/
-#define LV_USE_LED      1
-#if LV_USE_LED
-#  define LV_LED_BRIGHT_MIN  120      /*Minimal brightness*/
-#  define LV_LED_BRIGHT_MAX  255     /*Maximal brightness*/
-#endif
-
-/*Line (dependencies: -*/
-#define LV_USE_LINE     1
-
-/*List (dependencies: lv_page, lv_btn, lv_label, (lv_img optionally for icons ))*/
-#define LV_USE_LIST     1
-#if LV_USE_LIST != 0
-/*Default animation time of focusing to a list element [ms] (0: no animation)  */
-#  define LV_LIST_DEF_ANIM_TIME  100
-#endif
-
-/*Line meter (dependencies: *;)*/
-#define LV_USE_LINEMETER   1
-#if LV_USE_LINEMETER
-/* Draw line more precisely at cost of performance.
- * Useful if there are lot of lines any minor are visible
- * 0: No extra precision
- * 1: Some extra precision
- * 2: Best precision
- */
-#  define LV_LINEMETER_PRECISE    0
-#endif
-
-/*Mask (dependencies: -)*/
-#define LV_USE_OBJMASK  1
-
-/*Message box (dependencies: lv_rect, lv_btnm, lv_label)*/
-#define LV_USE_MSGBOX     1
-
-/*Page (dependencies: lv_cont)*/
-#define LV_USE_PAGE     1
-#if LV_USE_PAGE != 0
-/*Focus default animation time [ms] (0: no animation)*/
-#  define LV_PAGE_DEF_ANIM_TIME     400
-#endif
-
-/*Preload (dependencies: lv_arc, lv_anim)*/
-#define LV_USE_SPINNER      1
-#if LV_USE_SPINNER != 0
-#  define LV_SPINNER_DEF_ARC_LENGTH   60      /*[deg]*/
-#  define LV_SPINNER_DEF_SPIN_TIME    1000    /*[ms]*/
-#  define LV_SPINNER_DEF_ANIM         LV_SPINNER_TYPE_SPINNING_ARC
-#endif
-
-/*Roller (dependencies: lv_ddlist)*/
-#define LV_USE_ROLLER    1
-#if LV_USE_ROLLER != 0
-/*Focus animation time [ms] (0: no animation)*/
-#  define LV_ROLLER_DEF_ANIM_TIME     200
-
-/*Number of extra "pages" when the roller is infinite*/
-#  define LV_ROLLER_INF_PAGES         7
-#endif
-
-/*Slider (dependencies: lv_bar)*/
-#define LV_USE_SLIDER    1
-
-/*Spinbox (dependencies: lv_ta)*/
-#define LV_USE_SPINBOX       1
-
-/*Switch (dependencies: lv_slider)*/
-#define LV_USE_SWITCH       1
-
-/*Text area (dependencies: lv_label, lv_page)*/
-#define LV_USE_TEXTAREA       1
-#if LV_USE_TEXTAREA != 0
-#  define LV_TEXTAREA_DEF_CURSOR_BLINK_TIME 400     /*ms*/
-#  define LV_TEXTAREA_DEF_PWD_SHOW_TIME     1500    /*ms*/
-#endif
-
-/*Table (dependencies: lv_label)*/
-#define LV_USE_TABLE    1
-#if LV_USE_TABLE
-#  define LV_TABLE_COL_MAX    12
-#endif
-
-/*Tab (dependencies: lv_page, lv_btnm)*/
-#define LV_USE_TABVIEW      1
-#  if LV_USE_TABVIEW != 0
-/*Time of slide animation [ms] (0: no animation)*/
-#  define LV_TABVIEW_DEF_ANIM_TIME    300
-#endif
-
-/*Tileview (dependencies: lv_page) */
-#define LV_USE_TILEVIEW     1
-#if LV_USE_TILEVIEW
-/*Time of slide animation [ms] (0: no animation)*/
-#  define LV_TILEVIEW_DEF_ANIM_TIME   300
-#endif
-
-/*Window (dependencies: lv_cont, lv_btn, lv_label, lv_img, lv_page)*/
-#define LV_USE_WIN      1
-
-/*==================
- * Non-user section
- *==================*/
-
-#if defined(_MSC_VER) && !defined(_CRT_SECURE_NO_WARNINGS)    /* Disable warnings for Visual Studio*/
-#  define _CRT_SECURE_NO_WARNINGS
-#endif
-
-/*--END OF LV_CONF_H--*/
-
-#endif /*LV_CONF_H*/
-
-#endif /*End of "Content enable"*/
--- a/lvgl-sys/vendor/lvgl
+++ b/lvgl-sys/vendor/lvgl
@ -1 +1 @@
-Subproject commit 524709472757405ac0eef8d6d002632526430df3
+Subproject commit 1ca1934dbe8e826ef1ed1690005fb678fea3a1f3
--- a/lvgl/Cargo.toml
+++ b/lvgl/Cargo.toml
@ -1,7 +1,7 @@
 [package]
 name = "lvgl"
-description = "LVGL bindings for Rust. A powerful and easy-to-use embedded GUI with many widgets, advanced visual effects (opacity, antialiasing, animations) and low memory requirements (16K RAM, 64K Flash)."
-version = "0.5.2"
+description = "LittlevGL bindings for Rust. A powerful and easy-to-use embedded GUI with many widgets, advanced visual effects (opacity, antialiasing, animations) and low memory requirements (16K RAM, 64K Flash)."
+version = "0.5.1"
 authors = ["Rafael Caricio <crates.lvgl@caric.io>"]
 edition = "2018"
 repository = "https://github.com/rafaelcaricio/lvgl-rs"
@ -12,47 +12,15 @@ keywords = ["littlevgl", "lvgl", "graphical_interfaces"]
 build = "build.rs"

 [dependencies]
-lvgl-sys = { version = "0.5.2", path = "../lvgl-sys" }
+lvgl-sys = { version = "0.5.1", path = "../lvgl-sys" }
 cty = "0.2.1"
-embedded-graphics = "0.7.1"
-cstr_core = "0.2.3"
+embedded-graphics = "0.6.2"
+cstr_core = { version = "0.2.0" }
 bitflags = "1.2.1"

-[features]
-alloc = ["cstr_core/alloc"]
-lvgl_alloc = ["alloc"]
-use-vendored-config = ["lvgl-sys/use-vendored-config"]
-
 [build-dependencies]
-quote = "1.0.9"
-proc-macro2 = "1.0.24"
-lvgl-codegen = { version = "0.5.2", path = "../lvgl-codegen" }
-lvgl-sys = { version = "0.5.2", path = "../lvgl-sys" }
+quote = "1.0.7"
+proc-macro2 = "1.0.18"
+lvgl-codegen = { version = "0.5.1", path = "../lvgl-codegen" }
+lvgl-sys = { version = "0.5.1", path = "../lvgl-sys" }

-[dev-dependencies]
-embedded-graphics-simulator = "0.3.0"
-heapless = "0.7.13"
-
-[[example]]
-name = "demo"
-path = "../examples/demo.rs"
-required-features = ["alloc"]
-
-[[example]]
-name = "bar"
-path = "../examples/bar.rs"
-required-features = ["alloc"]
-
-[[example]]
-name = "button_click"
-path = "../examples/button_click.rs"
-required-features = ["alloc"]
-
-[[example]]
-name = "gauge"
-path = "../examples/gauge.rs"
-
-[[example]]
-name = "arc"
-path = "../examples/arc.rs"
-required-features = ["lvgl_alloc"]
--- a/lvgl/src/allocator.rs
+++ b/lvgl/src/allocator.rs
@ -1,20 +0,0 @@
-use core::alloc::{GlobalAlloc, Layout};
-
-// Register the global allocator
-#[global_allocator]
-static ALLOCATOR: LvglAlloc = LvglAlloc;
-
-pub struct LvglAlloc;
-
-unsafe impl GlobalAlloc for LvglAlloc {
-    unsafe fn alloc(&self, layout: Layout) -> *mut u8 {
-        // Make sure LVGL is initialized!
-        crate::lvgl_init();
-        lvgl_sys::lv_mem_alloc(layout.size() as lvgl_sys::size_t) as *mut u8
-    }
-
-    unsafe fn dealloc(&self, ptr: *mut u8, _layout: Layout) {
-        crate::lvgl_init();
-        lvgl_sys::lv_mem_free(ptr as *const cty::c_void)
-    }
-}
--- a/lvgl/src/lib.rs
+++ b/lvgl/src/lib.rs
@ -1,68 +1,15 @@
-//! [![github]](https://github.com/rafaelcaricio/lvgl-rs)&ensp;[![crates-io]](https://crates.io/crates/lvgl)&ensp;[![docs-rs]](crate)
-//!
-//! [github]: https://img.shields.io/badge/github-8da0cb?style=for-the-badge&labelColor=555555&logo=github
-//! [crates-io]: https://img.shields.io/badge/crates.io-fc8d62?style=for-the-badge&labelColor=555555&logo=rust
-//! [docs-rs]: https://img.shields.io/badge/docs.rs-66c2a5?style=for-the-badge&labelColor=555555&logoColor=white&logo=data:image/svg+xml;base64,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
-//!
-//! <br>
-//!
-//! [LVGL][1] bindings for Rust. A powerful and easy-to-use embedded GUI with many widgets, advanced visual effects, and
-//! low memory footprint. This crate is compatible with `#![no_std]` environments by default.
-//!
-//! [1]: https://docs.lvgl.io/v7/en/html/get-started/quick-overview.html
-//!
-
 #![cfg_attr(not(test), no_std)]

 #[macro_use]
 extern crate bitflags;

-#[cfg(feature = "lvgl_alloc")]
-extern crate alloc;
-
-// We can ONLY use `alloc::boxed::Box` if `lvgl_alloc` is enabled.
-// That is because we use `Box` to send memory references to LVGL. Since the global allocator, when
-// `lvgl_alloc` feature is enabled, is the LVGL memory manager then everything is in LVGL
-// managed memory anyways. In that case we can use the Rust's provided Box definition.
-//
-#[cfg(feature = "lvgl_alloc")]
-use ::alloc::boxed::Box;
-
-#[cfg(feature = "lvgl_alloc")]
-mod allocator;
-
+pub(crate) mod mem;
 mod support;
 mod ui;
 #[macro_use]
 mod lv_core;
 pub mod widgets;

-#[cfg(not(feature = "lvgl_alloc"))]
-pub(crate) mod mem;
-
-// When LVGL allocator is not used on the Rust code, we need a way to add objects to the LVGL
-// managed memory. We implement a very simple `Box` that has the minimal features to copy memory
-// safely to the LVGL managed memory.
-//
-#[cfg(not(feature = "lvgl_alloc"))]
-use crate::mem::Box;
-
 pub use lv_core::*;
 pub use support::*;
 pub use ui::*;
-
-use core::sync::atomic::{AtomicBool, Ordering};
-
-// Initialize LVGL only once.
-static LVGL_INITIALIZED: AtomicBool = AtomicBool::new(false);
-
-pub(crate) fn lvgl_init() {
-    if LVGL_INITIALIZED
-        .compare_exchange(false, true, Ordering::Relaxed, Ordering::Relaxed)
-        .is_ok()
-    {
-        unsafe {
-            lvgl_sys::lv_init();
-        }
-    }
-}
--- a/lvgl/src/lv_core/obj.rs
+++ b/lvgl/src/lv_core/obj.rs
@ -1,9 +1,9 @@
 use crate::lv_core::style::Style;
-use crate::Box;
+use crate::mem::Box;
 use crate::{Align, LvError, LvResult};
 use core::ptr;

-/// Represents a native LVGL object
+/// Represents a native LittlevGL object
 pub trait NativeObject {
    /// Provide common way to access to the underlying native object pointer.
    fn raw(&self) -> LvResult<ptr::NonNull<lvgl_sys::lv_obj_t>>;
@ -28,7 +28,7 @@ impl NativeObject for Obj {
    }
 }

-/// A wrapper for all LVGL common operations on generic objects.
+/// A wrapper for all LittlevGL common operations on generic objects.
 pub trait Widget: NativeObject {
    type SpecialEvent;
    type Part: Into<u8>;
@ -146,8 +146,8 @@ macro_rules! define_object {
                unsafe {
                    let mut raw = self.raw()?;
                    let obj = raw.as_mut();
-                    let user_closure = $crate::Box::new(f);
-                    obj.user_data = $crate::Box::into_raw(user_closure) as *mut cty::c_void;
+                    let user_closure = $crate::mem::Box::new(f)?;
+                    obj.user_data = $crate::mem::Box::into_raw(user_closure) as *mut cty::c_void;
                    lvgl_sys::lv_obj_set_event_cb(
                        obj,
                        lvgl_sys::lv_event_cb_t::Some($crate::support::event_callback::<Self, F>),
@ -179,19 +179,19 @@ macro_rules! define_object {
 bitflags! {
    pub struct State: u32 {
        /// Normal, released
-        const DEFAULT  = lvgl_sys::LV_STATE_DEFAULT as u32;
+        const DEFAULT  = lvgl_sys::LV_STATE_DEFAULT;
        /// Toggled or checked
-        const CHECKED  = lvgl_sys::LV_STATE_CHECKED as u32;
+        const CHECKED  = lvgl_sys::LV_STATE_CHECKED;
        /// Focused via keypad or encoder or clicked via touchpad/mouse
-        const FOCUSED  = lvgl_sys::LV_STATE_FOCUSED as u32;
+        const FOCUSED  = lvgl_sys::LV_STATE_FOCUSED;
        /// Edit by an encoder
-        const EDITED   = lvgl_sys::LV_STATE_EDITED as u32;
+        const EDITED   = lvgl_sys::LV_STATE_EDITED;
        /// Hovered by mouse (not supported now)
-        const HOVERED  = lvgl_sys::LV_STATE_HOVERED as u32;
+        const HOVERED  = lvgl_sys::LV_STATE_HOVERED;
        /// Pressed
-        const PRESSED  = lvgl_sys::LV_STATE_PRESSED as u32;
+        const PRESSED  = lvgl_sys::LV_STATE_PRESSED;
        /// Disabled or inactive
-        const DISABLED = lvgl_sys::LV_STATE_DISABLED as u32;
+        const DISABLED = lvgl_sys::LV_STATE_DISABLED;
    }
 }

@ -206,9 +206,9 @@ pub enum Part {
    All,
 }

-impl From<Part> for u8 {
-    fn from(self_: Part) -> u8 {
-        match self_ {
+impl Into<u8> for Part {
+    fn into(self) -> u8 {
+        match self {
            Part::Main => lvgl_sys::LV_OBJ_PART_MAIN as u8,
            Part::All => lvgl_sys::LV_OBJ_PART_ALL as u8,
        }
--- a/lvgl/src/lv_core/style.rs
+++ b/lvgl/src/lv_core/style.rs
@ -1,4 +1,4 @@
-use crate::Box;
+use crate::mem::Box;
 use crate::{Color, LvResult, State};
 use core::mem;
 use cstr_core::CStr;
@ -7,7 +7,6 @@ pub enum Themes {
    Pretty,
 }

-#[derive(Clone)]
 pub struct Style {
    pub(crate) raw: Box<lvgl_sys::lv_style_t>,
 }
@ -18,7 +17,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_ptr(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_STR as u32
+                (lvgl_sys::LV_STYLE_VALUE_STR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.as_ptr() as *mut cty::c_void,
            );
@ -32,7 +31,7 @@ impl Default for Style {
        let raw = unsafe {
            let mut style = mem::MaybeUninit::<lvgl_sys::lv_style_t>::uninit();
            lvgl_sys::lv_style_init(style.as_mut_ptr());
-            Box::new(style.assume_init())
+            Box::new(style.assume_init()).unwrap()
        };
        Self { raw }
    }
@ -40,122 +39,122 @@ impl Default for Style {

 bitflags! {
    pub struct Opacity: u32 {
-        const OPA_TRANSP = lvgl_sys::LV_OPA_TRANSP as u32;
-        const OPA_0 = lvgl_sys::LV_OPA_0 as u32;
-        const OPA_10 = lvgl_sys::LV_OPA_10 as u32;
-        const OPA_20 = lvgl_sys::LV_OPA_20 as u32;
-        const OPA_30 = lvgl_sys::LV_OPA_30 as u32;
-        const OPA_40 = lvgl_sys::LV_OPA_40 as u32;
-        const OPA_50 = lvgl_sys::LV_OPA_50 as u32;
-        const OPA_60 = lvgl_sys::LV_OPA_60 as u32;
-        const OPA_70 = lvgl_sys::LV_OPA_70 as u32;
-        const OPA_80 = lvgl_sys::LV_OPA_80 as u32;
-        const OPA_90 = lvgl_sys::LV_OPA_90 as u32;
-        const OPA_100 = lvgl_sys::LV_OPA_100 as u32;
-        const OPA_COVER = lvgl_sys::LV_OPA_COVER as u32;
+        const OPA_TRANSP = lvgl_sys::LV_OPA_TRANSP;
+        const OPA_0 = lvgl_sys::LV_OPA_0;
+        const OPA_10 = lvgl_sys::LV_OPA_10;
+        const OPA_20 = lvgl_sys::LV_OPA_20;
+        const OPA_30 = lvgl_sys::LV_OPA_30;
+        const OPA_40 = lvgl_sys::LV_OPA_40;
+        const OPA_50 = lvgl_sys::LV_OPA_50;
+        const OPA_60 = lvgl_sys::LV_OPA_60;
+        const OPA_70 = lvgl_sys::LV_OPA_70;
+        const OPA_80 = lvgl_sys::LV_OPA_80;
+        const OPA_90 = lvgl_sys::LV_OPA_90;
+        const OPA_100 = lvgl_sys::LV_OPA_100;
+        const OPA_COVER = lvgl_sys::LV_OPA_COVER;
    }
 }

-impl From<Opacity> for u8 {
-    fn from(self_: Opacity) -> u8 {
-        self_.bits as u8
+impl Into<u8> for Opacity {
+    fn into(self) -> u8 {
+        self.bits as u8
    }
 }

 bitflags! {
    pub struct StyleProp: u32 {
-        const RADIUS = lvgl_sys::LV_STYLE_RADIUS as u32;
-        const CLIP_CORNER = lvgl_sys::LV_STYLE_CLIP_CORNER as u32;
-        const SIZE = lvgl_sys::LV_STYLE_SIZE as u32;
-        const TRANSFORM_WIDTH = lvgl_sys::LV_STYLE_TRANSFORM_WIDTH as u32;
-        const TRANSFORM_HEIGHT = lvgl_sys::LV_STYLE_TRANSFORM_HEIGHT as u32;
-        const TRANSFORM_ANGLE = lvgl_sys::LV_STYLE_TRANSFORM_ANGLE as u32;
-        const TRANSFORM_ZOOM = lvgl_sys::LV_STYLE_TRANSFORM_ZOOM as u32;
-        const OPA_SCALE = lvgl_sys::LV_STYLE_OPA_SCALE as u32;
-        const PAD_TOP = lvgl_sys::LV_STYLE_PAD_TOP as u32;
-        const PAD_BOTTOM = lvgl_sys::LV_STYLE_PAD_BOTTOM as u32;
-        const PAD_LEFT = lvgl_sys::LV_STYLE_PAD_LEFT as u32;
-        const PAD_RIGHT = lvgl_sys::LV_STYLE_PAD_RIGHT as u32;
-        const PAD_INNER = lvgl_sys::LV_STYLE_PAD_INNER as u32;
-        const MARGIN_TOP = lvgl_sys::LV_STYLE_MARGIN_TOP as u32;
-        const MARGIN_BOTTOM = lvgl_sys::LV_STYLE_MARGIN_BOTTOM as u32;
-        const MARGIN_LEFT = lvgl_sys::LV_STYLE_MARGIN_LEFT as u32;
-        const MARGIN_RIGHT = lvgl_sys::LV_STYLE_MARGIN_RIGHT as u32;
-        const BG_BLEND_MODE = lvgl_sys::LV_STYLE_BG_BLEND_MODE as u32;
-        const BG_MAIN_STOP = lvgl_sys::LV_STYLE_BG_MAIN_STOP as u32;
-        const BG_GRAD_STOP = lvgl_sys::LV_STYLE_BG_GRAD_STOP as u32;
-        const BG_GRAD_DIR = lvgl_sys::LV_STYLE_BG_GRAD_DIR as u32;
-        const BG_COLOR = lvgl_sys::LV_STYLE_BG_COLOR as u32;
-        const BG_GRAD_COLOR = lvgl_sys::LV_STYLE_BG_GRAD_COLOR as u32;
-        const BG_OPA = lvgl_sys::LV_STYLE_BG_OPA as u32;
-        const BORDER_WIDTH = lvgl_sys::LV_STYLE_BORDER_WIDTH as u32;
-        const BORDER_SIDE = lvgl_sys::LV_STYLE_BORDER_SIDE as u32;
-        const BORDER_BLEND_MODE = lvgl_sys::LV_STYLE_BORDER_BLEND_MODE as u32;
-        const BORDER_POST = lvgl_sys::LV_STYLE_BORDER_POST as u32;
-        const BORDER_COLOR = lvgl_sys::LV_STYLE_BORDER_COLOR as u32;
-        const BORDER_OPA = lvgl_sys::LV_STYLE_BORDER_OPA as u32;
-        const OUTLINE_WIDTH = lvgl_sys::LV_STYLE_OUTLINE_WIDTH as u32;
-        const OUTLINE_PAD = lvgl_sys::LV_STYLE_OUTLINE_PAD as u32;
-        const OUTLINE_BLEND_MODE = lvgl_sys::LV_STYLE_OUTLINE_BLEND_MODE as u32;
-        const OUTLINE_COLOR = lvgl_sys::LV_STYLE_OUTLINE_COLOR as u32;
-        const OUTLINE_OPA = lvgl_sys::LV_STYLE_OUTLINE_OPA as u32;
-        const SHADOW_WIDTH = lvgl_sys::LV_STYLE_SHADOW_WIDTH as u32;
-        const SHADOW_OFS_X = lvgl_sys::LV_STYLE_SHADOW_OFS_X as u32;
-        const SHADOW_OFS_Y = lvgl_sys::LV_STYLE_SHADOW_OFS_Y as u32;
-        const SHADOW_SPREAD = lvgl_sys::LV_STYLE_SHADOW_SPREAD as u32;
-        const SHADOW_BLEND_MODE = lvgl_sys::LV_STYLE_SHADOW_BLEND_MODE as u32;
-        const SHADOW_COLOR = lvgl_sys::LV_STYLE_SHADOW_COLOR as u32;
-        const SHADOW_OPA = lvgl_sys::LV_STYLE_SHADOW_OPA as u32;
-        const PATTERN_BLEND_MODE = lvgl_sys::LV_STYLE_PATTERN_BLEND_MODE as u32;
-        const PATTERN_REPEAT = lvgl_sys::LV_STYLE_PATTERN_REPEAT as u32;
-        const PATTERN_RECOLOR = lvgl_sys::LV_STYLE_PATTERN_RECOLOR as u32;
-        const PATTERN_OPA = lvgl_sys::LV_STYLE_PATTERN_OPA as u32;
-        const PATTERN_RECOLOR_OPA = lvgl_sys::LV_STYLE_PATTERN_RECOLOR_OPA as u32;
-        const PATTERN_IMAGE = lvgl_sys::LV_STYLE_PATTERN_IMAGE as u32;
-        const VALUE_LETTER_SPACE = lvgl_sys::LV_STYLE_VALUE_LETTER_SPACE as u32;
-        const VALUE_LINE_SPACE = lvgl_sys::LV_STYLE_VALUE_LINE_SPACE as u32;
-        const VALUE_BLEND_MODE = lvgl_sys::LV_STYLE_VALUE_BLEND_MODE as u32;
-        const VALUE_OFS_X = lvgl_sys::LV_STYLE_VALUE_OFS_X as u32;
-        const VALUE_OFS_Y = lvgl_sys::LV_STYLE_VALUE_OFS_Y as u32;
-        const VALUE_ALIGN = lvgl_sys::LV_STYLE_VALUE_ALIGN as u32;
-        const VALUE_COLOR = lvgl_sys::LV_STYLE_VALUE_COLOR as u32;
-        const VALUE_OPA = lvgl_sys::LV_STYLE_VALUE_OPA as u32;
-        const VALUE_FONT = lvgl_sys::LV_STYLE_VALUE_FONT as u32;
-        const VALUE_STR = lvgl_sys::LV_STYLE_VALUE_STR as u32;
-        const TEXT_LETTER_SPACE = lvgl_sys::LV_STYLE_TEXT_LETTER_SPACE as u32;
-        const TEXT_LINE_SPACE = lvgl_sys::LV_STYLE_TEXT_LINE_SPACE as u32;
-        const TEXT_DECOR = lvgl_sys::LV_STYLE_TEXT_DECOR as u32;
-        const TEXT_BLEND_MODE = lvgl_sys::LV_STYLE_TEXT_BLEND_MODE as u32;
-        const TEXT_COLOR = lvgl_sys::LV_STYLE_TEXT_COLOR as u32;
-        const TEXT_SEL_COLOR = lvgl_sys::LV_STYLE_TEXT_SEL_COLOR as u32;
-        const TEXT_OPA = lvgl_sys::LV_STYLE_TEXT_OPA as u32;
-        const TEXT_FONT = lvgl_sys::LV_STYLE_TEXT_FONT as u32;
-        const LINE_WIDTH = lvgl_sys::LV_STYLE_LINE_WIDTH as u32;
-        const LINE_BLEND_MODE = lvgl_sys::LV_STYLE_LINE_BLEND_MODE as u32;
-        const LINE_DASH_WIDTH = lvgl_sys::LV_STYLE_LINE_DASH_WIDTH as u32;
-        const LINE_DASH_GAP = lvgl_sys::LV_STYLE_LINE_DASH_GAP as u32;
-        const LINE_ROUNDED = lvgl_sys::LV_STYLE_LINE_ROUNDED as u32;
-        const LINE_COLOR = lvgl_sys::LV_STYLE_LINE_COLOR as u32;
-        const LINE_OPA = lvgl_sys::LV_STYLE_LINE_OPA as u32;
-        const IMAGE_BLEND_MODE = lvgl_sys::LV_STYLE_IMAGE_BLEND_MODE as u32;
-        const IMAGE_RECOLOR = lvgl_sys::LV_STYLE_IMAGE_RECOLOR as u32;
-        const IMAGE_OPA = lvgl_sys::LV_STYLE_IMAGE_OPA as u32;
-        const IMAGE_RECOLOR_OPA = lvgl_sys::LV_STYLE_IMAGE_RECOLOR_OPA as u32;
-        const TRANSITION_TIME = lvgl_sys::LV_STYLE_TRANSITION_TIME as u32;
-        const TRANSITION_DELAY = lvgl_sys::LV_STYLE_TRANSITION_DELAY as u32;
-        const TRANSITION_PROP_1 = lvgl_sys::LV_STYLE_TRANSITION_PROP_1 as u32;
-        const TRANSITION_PROP_2 = lvgl_sys::LV_STYLE_TRANSITION_PROP_2 as u32;
-        const TRANSITION_PROP_3 = lvgl_sys::LV_STYLE_TRANSITION_PROP_3 as u32;
-        const TRANSITION_PROP_4 = lvgl_sys::LV_STYLE_TRANSITION_PROP_4 as u32;
-        const TRANSITION_PROP_5 = lvgl_sys::LV_STYLE_TRANSITION_PROP_5 as u32;
-        const TRANSITION_PROP_6 = lvgl_sys::LV_STYLE_TRANSITION_PROP_6 as u32;
-        const TRANSITION_PATH = lvgl_sys::LV_STYLE_TRANSITION_PATH as u32;
-        const SCALE_WIDTH = lvgl_sys::LV_STYLE_SCALE_WIDTH as u32;
-        const SCALE_BORDER_WIDTH = lvgl_sys::LV_STYLE_SCALE_BORDER_WIDTH as u32;
-        const SCALE_END_BORDER_WIDTH = lvgl_sys::LV_STYLE_SCALE_END_BORDER_WIDTH as u32;
-        const SCALE_END_LINE_WIDTH = lvgl_sys::LV_STYLE_SCALE_END_LINE_WIDTH as u32;
-        const SCALE_GRAD_COLOR = lvgl_sys::LV_STYLE_SCALE_GRAD_COLOR as u32;
-        const SCALE_END_COLOR = lvgl_sys::LV_STYLE_SCALE_END_COLOR as u32;
+        const RADIUS = lvgl_sys::LV_STYLE_RADIUS;
+        const CLIP_CORNER = lvgl_sys::LV_STYLE_CLIP_CORNER;
+        const SIZE = lvgl_sys::LV_STYLE_SIZE;
+        const TRANSFORM_WIDTH = lvgl_sys::LV_STYLE_TRANSFORM_WIDTH;
+        const TRANSFORM_HEIGHT = lvgl_sys::LV_STYLE_TRANSFORM_HEIGHT;
+        const TRANSFORM_ANGLE = lvgl_sys::LV_STYLE_TRANSFORM_ANGLE;
+        const TRANSFORM_ZOOM = lvgl_sys::LV_STYLE_TRANSFORM_ZOOM;
+        const OPA_SCALE = lvgl_sys::LV_STYLE_OPA_SCALE;
+        const PAD_TOP = lvgl_sys::LV_STYLE_PAD_TOP;
+        const PAD_BOTTOM = lvgl_sys::LV_STYLE_PAD_BOTTOM;
+        const PAD_LEFT = lvgl_sys::LV_STYLE_PAD_LEFT;
+        const PAD_RIGHT = lvgl_sys::LV_STYLE_PAD_RIGHT;
+        const PAD_INNER = lvgl_sys::LV_STYLE_PAD_INNER;
+        const MARGIN_TOP = lvgl_sys::LV_STYLE_MARGIN_TOP;
+        const MARGIN_BOTTOM = lvgl_sys::LV_STYLE_MARGIN_BOTTOM;
+        const MARGIN_LEFT = lvgl_sys::LV_STYLE_MARGIN_LEFT;
+        const MARGIN_RIGHT = lvgl_sys::LV_STYLE_MARGIN_RIGHT;
+        const BG_BLEND_MODE = lvgl_sys::LV_STYLE_BG_BLEND_MODE;
+        const BG_MAIN_STOP = lvgl_sys::LV_STYLE_BG_MAIN_STOP;
+        const BG_GRAD_STOP = lvgl_sys::LV_STYLE_BG_GRAD_STOP;
+        const BG_GRAD_DIR = lvgl_sys::LV_STYLE_BG_GRAD_DIR;
+        const BG_COLOR = lvgl_sys::LV_STYLE_BG_COLOR;
+        const BG_GRAD_COLOR = lvgl_sys::LV_STYLE_BG_GRAD_COLOR;
+        const BG_OPA = lvgl_sys::LV_STYLE_BG_OPA;
+        const BORDER_WIDTH = lvgl_sys::LV_STYLE_BORDER_WIDTH;
+        const BORDER_SIDE = lvgl_sys::LV_STYLE_BORDER_SIDE;
+        const BORDER_BLEND_MODE = lvgl_sys::LV_STYLE_BORDER_BLEND_MODE;
+        const BORDER_POST = lvgl_sys::LV_STYLE_BORDER_POST;
+        const BORDER_COLOR = lvgl_sys::LV_STYLE_BORDER_COLOR;
+        const BORDER_OPA = lvgl_sys::LV_STYLE_BORDER_OPA;
+        const OUTLINE_WIDTH = lvgl_sys::LV_STYLE_OUTLINE_WIDTH;
+        const OUTLINE_PAD = lvgl_sys::LV_STYLE_OUTLINE_PAD;
+        const OUTLINE_BLEND_MODE = lvgl_sys::LV_STYLE_OUTLINE_BLEND_MODE;
+        const OUTLINE_COLOR = lvgl_sys::LV_STYLE_OUTLINE_COLOR;
+        const OUTLINE_OPA = lvgl_sys::LV_STYLE_OUTLINE_OPA;
+        const SHADOW_WIDTH = lvgl_sys::LV_STYLE_SHADOW_WIDTH;
+        const SHADOW_OFS_X = lvgl_sys::LV_STYLE_SHADOW_OFS_X;
+        const SHADOW_OFS_Y = lvgl_sys::LV_STYLE_SHADOW_OFS_Y;
+        const SHADOW_SPREAD = lvgl_sys::LV_STYLE_SHADOW_SPREAD;
+        const SHADOW_BLEND_MODE = lvgl_sys::LV_STYLE_SHADOW_BLEND_MODE;
+        const SHADOW_COLOR = lvgl_sys::LV_STYLE_SHADOW_COLOR;
+        const SHADOW_OPA = lvgl_sys::LV_STYLE_SHADOW_OPA;
+        const PATTERN_BLEND_MODE = lvgl_sys::LV_STYLE_PATTERN_BLEND_MODE;
+        const PATTERN_REPEAT = lvgl_sys::LV_STYLE_PATTERN_REPEAT;
+        const PATTERN_RECOLOR = lvgl_sys::LV_STYLE_PATTERN_RECOLOR;
+        const PATTERN_OPA = lvgl_sys::LV_STYLE_PATTERN_OPA;
+        const PATTERN_RECOLOR_OPA = lvgl_sys::LV_STYLE_PATTERN_RECOLOR_OPA;
+        const PATTERN_IMAGE = lvgl_sys::LV_STYLE_PATTERN_IMAGE;
+        const VALUE_LETTER_SPACE = lvgl_sys::LV_STYLE_VALUE_LETTER_SPACE;
+        const VALUE_LINE_SPACE = lvgl_sys::LV_STYLE_VALUE_LINE_SPACE;
+        const VALUE_BLEND_MODE = lvgl_sys::LV_STYLE_VALUE_BLEND_MODE;
+        const VALUE_OFS_X = lvgl_sys::LV_STYLE_VALUE_OFS_X;
+        const VALUE_OFS_Y = lvgl_sys::LV_STYLE_VALUE_OFS_Y;
+        const VALUE_ALIGN = lvgl_sys::LV_STYLE_VALUE_ALIGN;
+        const VALUE_COLOR = lvgl_sys::LV_STYLE_VALUE_COLOR;
+        const VALUE_OPA = lvgl_sys::LV_STYLE_VALUE_OPA;
+        const VALUE_FONT = lvgl_sys::LV_STYLE_VALUE_FONT;
+        const VALUE_STR = lvgl_sys::LV_STYLE_VALUE_STR;
+        const TEXT_LETTER_SPACE = lvgl_sys::LV_STYLE_TEXT_LETTER_SPACE;
+        const TEXT_LINE_SPACE = lvgl_sys::LV_STYLE_TEXT_LINE_SPACE;
+        const TEXT_DECOR = lvgl_sys::LV_STYLE_TEXT_DECOR;
+        const TEXT_BLEND_MODE = lvgl_sys::LV_STYLE_TEXT_BLEND_MODE;
+        const TEXT_COLOR = lvgl_sys::LV_STYLE_TEXT_COLOR;
+        const TEXT_SEL_COLOR = lvgl_sys::LV_STYLE_TEXT_SEL_COLOR;
+        const TEXT_OPA = lvgl_sys::LV_STYLE_TEXT_OPA;
+        const TEXT_FONT = lvgl_sys::LV_STYLE_TEXT_FONT;
+        const LINE_WIDTH = lvgl_sys::LV_STYLE_LINE_WIDTH;
+        const LINE_BLEND_MODE = lvgl_sys::LV_STYLE_LINE_BLEND_MODE;
+        const LINE_DASH_WIDTH = lvgl_sys::LV_STYLE_LINE_DASH_WIDTH;
+        const LINE_DASH_GAP = lvgl_sys::LV_STYLE_LINE_DASH_GAP;
+        const LINE_ROUNDED = lvgl_sys::LV_STYLE_LINE_ROUNDED;
+        const LINE_COLOR = lvgl_sys::LV_STYLE_LINE_COLOR;
+        const LINE_OPA = lvgl_sys::LV_STYLE_LINE_OPA;
+        const IMAGE_BLEND_MODE = lvgl_sys::LV_STYLE_IMAGE_BLEND_MODE;
+        const IMAGE_RECOLOR = lvgl_sys::LV_STYLE_IMAGE_RECOLOR;
+        const IMAGE_OPA = lvgl_sys::LV_STYLE_IMAGE_OPA;
+        const IMAGE_RECOLOR_OPA = lvgl_sys::LV_STYLE_IMAGE_RECOLOR_OPA;
+        const TRANSITION_TIME = lvgl_sys::LV_STYLE_TRANSITION_TIME;
+        const TRANSITION_DELAY = lvgl_sys::LV_STYLE_TRANSITION_DELAY;
+        const TRANSITION_PROP_1 = lvgl_sys::LV_STYLE_TRANSITION_PROP_1;
+        const TRANSITION_PROP_2 = lvgl_sys::LV_STYLE_TRANSITION_PROP_2;
+        const TRANSITION_PROP_3 = lvgl_sys::LV_STYLE_TRANSITION_PROP_3;
+        const TRANSITION_PROP_4 = lvgl_sys::LV_STYLE_TRANSITION_PROP_4;
+        const TRANSITION_PROP_5 = lvgl_sys::LV_STYLE_TRANSITION_PROP_5;
+        const TRANSITION_PROP_6 = lvgl_sys::LV_STYLE_TRANSITION_PROP_6;
+        const TRANSITION_PATH = lvgl_sys::LV_STYLE_TRANSITION_PATH;
+        const SCALE_WIDTH = lvgl_sys::LV_STYLE_SCALE_WIDTH;
+        const SCALE_BORDER_WIDTH = lvgl_sys::LV_STYLE_SCALE_BORDER_WIDTH;
+        const SCALE_END_BORDER_WIDTH = lvgl_sys::LV_STYLE_SCALE_END_BORDER_WIDTH;
+        const SCALE_END_LINE_WIDTH = lvgl_sys::LV_STYLE_SCALE_END_LINE_WIDTH;
+        const SCALE_GRAD_COLOR = lvgl_sys::LV_STYLE_SCALE_GRAD_COLOR;
+        const SCALE_END_COLOR = lvgl_sys::LV_STYLE_SCALE_END_COLOR;
    }
 }

@ -166,8 +165,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_RADIUS as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
+                (lvgl_sys::LV_STYLE_RADIUS | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32))
+                    as u16,
                value,
            );
        }
@ -178,7 +177,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_CLIP_CORNER as u32
+                (lvgl_sys::LV_STYLE_CLIP_CORNER
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -190,8 +189,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SIZE as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
+                (lvgl_sys::LV_STYLE_SIZE | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32))
+                    as u16,
                value,
            );
        }
@ -202,7 +201,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSFORM_WIDTH as u32
+                (lvgl_sys::LV_STYLE_TRANSFORM_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -214,7 +213,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSFORM_HEIGHT as u32
+                (lvgl_sys::LV_STYLE_TRANSFORM_HEIGHT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -226,7 +225,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSFORM_ANGLE as u32
+                (lvgl_sys::LV_STYLE_TRANSFORM_ANGLE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -238,7 +237,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSFORM_ZOOM as u32
+                (lvgl_sys::LV_STYLE_TRANSFORM_ZOOM
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -250,7 +249,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OPA_SCALE as u32
+                (lvgl_sys::LV_STYLE_OPA_SCALE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -262,8 +261,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PAD_TOP as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
+                (lvgl_sys::LV_STYLE_PAD_TOP | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32))
+                    as u16,
                value,
            );
        }
@ -274,7 +273,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PAD_BOTTOM as u32
+                (lvgl_sys::LV_STYLE_PAD_BOTTOM
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -286,7 +285,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PAD_LEFT as u32
+                (lvgl_sys::LV_STYLE_PAD_LEFT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -298,7 +297,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PAD_RIGHT as u32
+                (lvgl_sys::LV_STYLE_PAD_RIGHT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -310,7 +309,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PAD_INNER as u32
+                (lvgl_sys::LV_STYLE_PAD_INNER
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -322,7 +321,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_MARGIN_TOP as u32
+                (lvgl_sys::LV_STYLE_MARGIN_TOP
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -334,7 +333,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_MARGIN_BOTTOM as u32
+                (lvgl_sys::LV_STYLE_MARGIN_BOTTOM
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -346,7 +345,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_MARGIN_LEFT as u32
+                (lvgl_sys::LV_STYLE_MARGIN_LEFT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -358,7 +357,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_MARGIN_RIGHT as u32
+                (lvgl_sys::LV_STYLE_MARGIN_RIGHT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -370,7 +369,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_BG_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -382,7 +381,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_MAIN_STOP as u32
+                (lvgl_sys::LV_STYLE_BG_MAIN_STOP
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -394,7 +393,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_GRAD_STOP as u32
+                (lvgl_sys::LV_STYLE_BG_GRAD_STOP
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -406,7 +405,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_GRAD_DIR as u32
+                (lvgl_sys::LV_STYLE_BG_GRAD_DIR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -418,7 +417,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_COLOR as u32
+                (lvgl_sys::LV_STYLE_BG_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -430,7 +429,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_GRAD_COLOR as u32
+                (lvgl_sys::LV_STYLE_BG_GRAD_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -442,8 +441,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BG_OPA as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
+                (lvgl_sys::LV_STYLE_BG_OPA | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32))
+                    as u16,
                value.into(),
            );
        }
@ -454,7 +453,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_WIDTH as u32
+                (lvgl_sys::LV_STYLE_BORDER_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -466,7 +465,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_SIDE as u32
+                (lvgl_sys::LV_STYLE_BORDER_SIDE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -478,7 +477,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_BORDER_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -490,7 +489,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_POST as u32
+                (lvgl_sys::LV_STYLE_BORDER_POST
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -502,7 +501,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_COLOR as u32
+                (lvgl_sys::LV_STYLE_BORDER_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -514,7 +513,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_BORDER_OPA as u32
+                (lvgl_sys::LV_STYLE_BORDER_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -526,7 +525,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OUTLINE_WIDTH as u32
+                (lvgl_sys::LV_STYLE_OUTLINE_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -538,7 +537,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OUTLINE_PAD as u32
+                (lvgl_sys::LV_STYLE_OUTLINE_PAD
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -550,7 +549,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OUTLINE_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_OUTLINE_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -562,7 +561,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OUTLINE_COLOR as u32
+                (lvgl_sys::LV_STYLE_OUTLINE_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -574,7 +573,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_OUTLINE_OPA as u32
+                (lvgl_sys::LV_STYLE_OUTLINE_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -586,7 +585,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_WIDTH as u32
+                (lvgl_sys::LV_STYLE_SHADOW_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -598,7 +597,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_OFS_X as u32
+                (lvgl_sys::LV_STYLE_SHADOW_OFS_X
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -610,7 +609,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_OFS_Y as u32
+                (lvgl_sys::LV_STYLE_SHADOW_OFS_Y
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -622,7 +621,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_SPREAD as u32
+                (lvgl_sys::LV_STYLE_SHADOW_SPREAD
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -634,7 +633,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_SHADOW_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -646,7 +645,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_COLOR as u32
+                (lvgl_sys::LV_STYLE_SHADOW_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -658,7 +657,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SHADOW_OPA as u32
+                (lvgl_sys::LV_STYLE_SHADOW_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -670,7 +669,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PATTERN_REPEAT as u32
+                (lvgl_sys::LV_STYLE_PATTERN_REPEAT
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -682,7 +681,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PATTERN_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_PATTERN_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -694,7 +693,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PATTERN_RECOLOR as u32
+                (lvgl_sys::LV_STYLE_PATTERN_RECOLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -706,7 +705,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PATTERN_OPA as u32
+                (lvgl_sys::LV_STYLE_PATTERN_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -718,7 +717,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_PATTERN_RECOLOR_OPA as u32
+                (lvgl_sys::LV_STYLE_PATTERN_RECOLOR_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -730,7 +729,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_LETTER_SPACE as u32
+                (lvgl_sys::LV_STYLE_VALUE_LETTER_SPACE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -742,7 +741,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_LINE_SPACE as u32
+                (lvgl_sys::LV_STYLE_VALUE_LINE_SPACE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -754,7 +753,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_VALUE_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -766,7 +765,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_OFS_X as u32
+                (lvgl_sys::LV_STYLE_VALUE_OFS_X
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -778,7 +777,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_OFS_Y as u32
+                (lvgl_sys::LV_STYLE_VALUE_OFS_Y
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -790,7 +789,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_ALIGN as u32
+                (lvgl_sys::LV_STYLE_VALUE_ALIGN
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -802,7 +801,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_COLOR as u32
+                (lvgl_sys::LV_STYLE_VALUE_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -814,7 +813,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_VALUE_OPA as u32
+                (lvgl_sys::LV_STYLE_VALUE_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -826,7 +825,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_LETTER_SPACE as u32
+                (lvgl_sys::LV_STYLE_TEXT_LETTER_SPACE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -838,7 +837,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_LINE_SPACE as u32
+                (lvgl_sys::LV_STYLE_TEXT_LINE_SPACE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -850,7 +849,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_DECOR as u32
+                (lvgl_sys::LV_STYLE_TEXT_DECOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -862,7 +861,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_TEXT_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -874,7 +873,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_COLOR as u32
+                (lvgl_sys::LV_STYLE_TEXT_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -886,7 +885,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_SEL_COLOR as u32
+                (lvgl_sys::LV_STYLE_TEXT_SEL_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -898,7 +897,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TEXT_OPA as u32
+                (lvgl_sys::LV_STYLE_TEXT_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -910,7 +909,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_WIDTH as u32
+                (lvgl_sys::LV_STYLE_LINE_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -922,7 +921,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_LINE_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -934,7 +933,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_DASH_WIDTH as u32
+                (lvgl_sys::LV_STYLE_LINE_DASH_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -946,7 +945,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_DASH_GAP as u32
+                (lvgl_sys::LV_STYLE_LINE_DASH_GAP
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -958,7 +957,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_ROUNDED as u32
+                (lvgl_sys::LV_STYLE_LINE_ROUNDED
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -970,7 +969,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_COLOR as u32
+                (lvgl_sys::LV_STYLE_LINE_COLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -982,7 +981,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_LINE_OPA as u32
+                (lvgl_sys::LV_STYLE_LINE_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -994,7 +993,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_IMAGE_BLEND_MODE as u32
+                (lvgl_sys::LV_STYLE_IMAGE_BLEND_MODE
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1006,7 +1005,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_IMAGE_RECOLOR as u32
+                (lvgl_sys::LV_STYLE_IMAGE_RECOLOR
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
@ -1018,7 +1017,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_IMAGE_OPA as u32
+                (lvgl_sys::LV_STYLE_IMAGE_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -1030,7 +1029,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_opa(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_IMAGE_RECOLOR_OPA as u32
+                (lvgl_sys::LV_STYLE_IMAGE_RECOLOR_OPA
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.into(),
            );
@ -1042,7 +1041,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_TIME as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_TIME
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1054,7 +1053,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_DELAY as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_DELAY
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1066,7 +1065,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_1 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_1
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1078,7 +1077,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_2 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_2
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1090,7 +1089,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_3 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_3
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1102,7 +1101,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_4 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_4
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1114,7 +1113,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_5 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_5
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1126,7 +1125,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_TRANSITION_PROP_6 as u32
+                (lvgl_sys::LV_STYLE_TRANSITION_PROP_6
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1138,7 +1137,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_WIDTH as u32
+                (lvgl_sys::LV_STYLE_SCALE_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1150,7 +1149,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_BORDER_WIDTH as u32
+                (lvgl_sys::LV_STYLE_SCALE_BORDER_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1162,7 +1161,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_END_BORDER_WIDTH as u32
+                (lvgl_sys::LV_STYLE_SCALE_END_BORDER_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1174,7 +1173,7 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_int(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_END_LINE_WIDTH as u32
+                (lvgl_sys::LV_STYLE_SCALE_END_LINE_WIDTH
                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value,
            );
@ -1186,8 +1185,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_GRAD_COLOR as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS)) as u16,
+                (lvgl_sys::LV_STYLE_SCALE_GRAD_COLOR
+                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
        }
@ -1198,8 +1197,8 @@ impl Style {
        unsafe {
            lvgl_sys::_lv_style_set_color(
                self.raw.as_mut(),
-                (lvgl_sys::LV_STYLE_SCALE_END_COLOR as u32
-                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS)) as u16,
+                (lvgl_sys::LV_STYLE_SCALE_END_COLOR
+                    | (native_state << lvgl_sys::LV_STYLE_STATE_POS as u32)) as u16,
                value.raw,
            );
        }
--- a/lvgl/src/mem.rs
+++ b/lvgl/src/mem.rs
@ -1,17 +1,13 @@
+use crate::{LvError, LvResult};
 use core::mem;
 use core::ops::{Deref, DerefMut};
 use core::ptr::NonNull;

-/// Places a sized `T` into LVGL memory.
-///
-/// This is useful for cases when we need to allocate memory on Rust side
-/// and handover the management of that memory to LVGL. May also be used in cases we
-/// want to use dynamic memory in the Rust side.
+/// Places `T` into LVGL memory.
 pub(crate) struct Box<T>(NonNull<T>);

 impl<T> Box<T> {
-    /// Allocate memory using LVGL memory API and place `T` in the LVGL tracked memory.
-    pub fn new(value: T) -> Box<T> {
+    pub fn new(inner: T) -> LvResult<Box<T>> {
        let size = mem::size_of::<T>();
        let inner = unsafe {
            let ptr = lvgl_sys::lv_mem_alloc(size as lvgl_sys::size_t) as *mut T;
@ -23,16 +19,17 @@ impl<T> Box<T> {
                "Memory address not aligned!"
            );

-            NonNull::new(ptr)
-                .map(|p| {
-                    p.as_ptr().write(value);
-                    p
-                })
-                .unwrap_or_else(|| {
-                    panic!("Could not allocate memory {} bytes", size);
-                })
+            match NonNull::new(ptr) {
+                Some(v) => {
+                    // Move `T` to LVGL managed memory
+                    // It will panic if LVGL memory is not aligned
+                    ptr.write(inner);
+                    Ok(v)
+                }
+                None => Err(LvError::LvOOMemory),
+            }
        };
-        Box(inner)
+        Ok(Box(inner?))
    }

    pub fn into_raw(self) -> *mut T {
@ -69,30 +66,35 @@ impl<T> AsMut<T> for Box<T> {
    }
 }

-impl<T: Clone> Clone for Box<T> {
-    fn clone(&self) -> Self {
-        unsafe { Self::new(self.0.as_ref().clone()) }
-    }
-}
-
 #[cfg(test)]
 mod test {
    use super::*;
-    use std::vec::Vec;
+    use core::mem::MaybeUninit;
+    use std::sync::Once;
+
+    static INIT_LVGL: Once = Once::new();
+
+    fn init() {
+        INIT_LVGL.call_once(|| {
+            unsafe {
+                lvgl_sys::lv_init();
+            };
+        });
+    }

    #[test]
    fn place_value_in_lv_mem() {
-        crate::lvgl_init();
+        init();

-        let v = Box::new(5);
+        let v = Box::new(5).unwrap();
        drop(v);
-        let v = Box::new(10);
+        let v = Box::new(10).unwrap();
        drop(v);
    }

    #[test]
    fn place_complex_value_in_lv_mem() {
-        crate::lvgl_init();
+        init();

        #[repr(C)]
        #[derive(Debug)]
@ -103,9 +105,6 @@ mod test {
            disp: i32,
        }

-        let initial_mem_info = mem_info();
-
-        let mut keep = Vec::new();
        for i in 0..100 {
            let p = Point {
                x: i,
@ -115,60 +114,31 @@ mod test {
            };

            println!("{:?}", p);
-            let mut b = Box::new(p);
+            let mut b = Box::new(p).unwrap_or_else(|_| {
+                print_mem_info();
+                panic!("OOM");
+            });

            println!("memory address is {:p}", b.as_mut());

            let point = b.as_mut();
            if point.x != i {
+                print_mem_info();
+
                println!("{:?}", point);
            }
            assert_eq!(point.x, i);
-
-            let info = mem_info();
-            println!("mem info: {:?}", &info);
-            keep.push(b);
        }
-        drop(keep);
-
-        unsafe {
-            lvgl_sys::lv_mem_defrag();
-        }
-
-        let final_info = mem_info();
-        println!("mem info: {:?}", &final_info);
-
-        // If this fails, we are leaking memory! BOOM! \o/
-        assert_eq!(initial_mem_info.free_size, final_info.free_size)
    }

-    #[test]
-    fn clone_object_in_lv_mem() {
-        crate::lvgl_init();
-
-        let v1 = Box::new(5);
-        let v2 = v1.clone();
-
-        // Ensure that the two objects have identical values.
-        assert_eq!(*v1, *v2);
-        // They should have different memory addresses, however.
-        assert_ne!(v1.into_raw() as usize, v2.into_raw() as usize);
-    }
-
-    fn mem_info() -> lvgl_sys::lv_mem_monitor_t {
-        let mut info = lvgl_sys::lv_mem_monitor_t {
-            total_size: 0,
-            free_cnt: 0,
-            free_size: 0,
-            free_biggest_size: 0,
-            used_cnt: 0,
-            max_used: 0,
-            used_pct: 0,
-            frag_pct: 0,
-        };
+    fn print_mem_info() {
+        let mut info = MaybeUninit::uninit();
        unsafe {
-            lvgl_sys::lv_mem_monitor(&mut info as *mut _);
+            lvgl_sys::lv_mem_monitor(info.as_mut_ptr());
+        }
+        if !info.as_ptr().is_null() {
+            let info = unsafe { info.assume_init() };
+            println!("mem info: {:?}", info);
        }
-        info
    }
 }
--- a/lvgl/src/support.rs
+++ b/lvgl/src/support.rs
@ -29,15 +29,21 @@ impl Color {
    }

    pub fn r(&self) -> u8 {
-        unsafe { lvgl_sys::_LV_COLOR_GET_R(self.raw) as u8 }
+        unsafe {
+            lvgl_sys::_LV_COLOR_GET_R(self.raw) as u8
+        }
    }

    pub fn g(&self) -> u8 {
-        unsafe { lvgl_sys::_LV_COLOR_GET_G(self.raw) as u8 }
+        unsafe {
+            lvgl_sys::_LV_COLOR_GET_G(self.raw) as u8
+        }
    }

    pub fn b(&self) -> u8 {
-        unsafe { lvgl_sys::_LV_COLOR_GET_B(self.raw) as u8 }
+        unsafe {
+            lvgl_sys::_LV_COLOR_GET_B(self.raw) as u8
+        }
    }
 }

@ -65,7 +71,7 @@ impl From<Color> for Rgb565 {
    }
 }

-/// Events are triggered in LVGL when something happens which might be interesting to
+/// Events are triggered in LittlevGL when something happens which might be interesting to
 /// the user, e.g. if an object:
 ///  - is clicked
 ///  - is dragged
@ -112,25 +118,23 @@ impl<S> TryFrom<lvgl_sys::lv_event_t> for Event<S> {
    type Error = ();

    fn try_from(value: u8) -> Result<Self, Self::Error> {
-        const LV_EVENT_PRESSED: u32 = lvgl_sys::LV_EVENT_PRESSED as u32;
-        const LV_EVENT_PRESSING: u32 = lvgl_sys::LV_EVENT_PRESSING as u32;
-        const LV_EVENT_PRESS_LOST: u32 = lvgl_sys::LV_EVENT_PRESS_LOST as u32;
-        const LV_EVENT_SHORT_CLICKED: u32 = lvgl_sys::LV_EVENT_SHORT_CLICKED as u32;
-        const LV_EVENT_CLICKED: u32 = lvgl_sys::LV_EVENT_CLICKED as u32;
-        const LV_EVENT_LONG_PRESSED: u32 = lvgl_sys::LV_EVENT_LONG_PRESSED as u32;
-        const LV_EVENT_LONG_PRESSED_REPEAT: u32 = lvgl_sys::LV_EVENT_LONG_PRESSED_REPEAT as u32;
-        const LV_EVENT_RELEASED: u32 = lvgl_sys::LV_EVENT_RELEASED as u32;
-
        match value as u32 {
-            LV_EVENT_PRESSED => Ok(Event::Pressed),
-            LV_EVENT_PRESSING => Ok(Event::Pressing),
-            LV_EVENT_PRESS_LOST => Ok(Event::PressLost),
-            LV_EVENT_SHORT_CLICKED => Ok(Event::ShortClicked),
-            LV_EVENT_CLICKED => Ok(Event::Clicked),
-            LV_EVENT_LONG_PRESSED => Ok(Event::LongPressed),
-            LV_EVENT_LONG_PRESSED_REPEAT => Ok(Event::LongPressedRepeat),
-            LV_EVENT_RELEASED => Ok(Event::Released),
+            lvgl_sys::LV_EVENT_PRESSED => Ok(Event::Pressed),
+            lvgl_sys::LV_EVENT_PRESSING => Ok(Event::Pressing),
+            lvgl_sys::LV_EVENT_PRESS_LOST => Ok(Event::PressLost),
+            lvgl_sys::LV_EVENT_SHORT_CLICKED => Ok(Event::ShortClicked),
+            lvgl_sys::LV_EVENT_CLICKED => Ok(Event::Clicked),
+            lvgl_sys::LV_EVENT_LONG_PRESSED => Ok(Event::LongPressed),
+            lvgl_sys::LV_EVENT_LONG_PRESSED_REPEAT => Ok(Event::LongPressedRepeat),
+            lvgl_sys::LV_EVENT_RELEASED => Ok(Event::Released),
            _ => Err(()),
+            // _ => {
+            //     if let Ok(special_event_type) = S::try_from(value) {
+            //         Ok(Event::Special(special_event_type))
+            //     } else {
+            //         Err(())
+            //     }
+            // }
        }
    }
 }
@ -203,9 +207,9 @@ pub enum Align {
    OutRightBottom,
 }

-impl From<Align> for u8 {
-    fn from(self_: Align) -> u8 {
-        let native = match self_ {
+impl Into<u8> for Align {
+    fn into(self) -> u8 {
+        let native = match self {
            Align::Center => lvgl_sys::LV_ALIGN_CENTER,
            Align::InTopLeft => lvgl_sys::LV_ALIGN_IN_TOP_LEFT,
            Align::InTopMid => lvgl_sys::LV_ALIGN_IN_TOP_MID,
@ -246,9 +250,11 @@ impl From<Animation> for lvgl_sys::lv_anim_enable_t {
    }
 }

+
 #[cfg(test)]
 mod test {
    use super::*;
+    use lvgl_sys;

    #[test]
    fn color_properties_accessible() {
--- a/lvgl/src/ui.rs
+++ b/lvgl/src/ui.rs
@ -1,4 +1,4 @@
-use crate::Box;
+use crate::mem::Box;
 use crate::{Color, Event, LvError, LvResult, Obj, Widget};
 use core::marker::PhantomData;
 use core::mem::MaybeUninit;
@ -6,11 +6,11 @@ use core::ptr;
 use core::ptr::NonNull;
 use core::sync::atomic::{AtomicBool, Ordering};
 use core::time::Duration;
-use embedded_graphics::draw_target::DrawTarget;
+use embedded_graphics::pixelcolor::PixelColor;
 use embedded_graphics::prelude::*;
-use embedded_graphics::{pixelcolor::PixelColor, Pixel};
+use embedded_graphics::{drawable, DrawTarget};

-// There can only be a single reference to LVGL library.
+// There can only be a single reference to LittlevGL library.
 static LVGL_IN_USE: AtomicBool = AtomicBool::new(false);

 // TODO: Make this an external configuration
@ -20,34 +20,33 @@ pub(crate) const BUF_SIZE: usize = lvgl_sys::LV_HOR_RES_MAX as usize * REFRESH_B

 pub struct UI<T, C>
 where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
-    // LVGL is not thread-safe by default.
+    // LittlevGL is not thread-safe by default.
    _not_sync: PhantomData<*mut ()>,
    // Later we can add possibility to have multiple displays by using `heapless::Vec`
    display_data: Option<DisplayUserData<T, C>>,
 }

-// LVGL does not use thread locals.
+// LittlevGL does not use thread locals.
 unsafe impl<T, C> Send for UI<T, C>
 where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
 }

 impl<T, C> UI<T, C>
 where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
    pub fn init() -> LvResult<Self> {
-        if LVGL_IN_USE
-            .compare_exchange(false, true, Ordering::Relaxed, Ordering::Relaxed)
-            .is_ok()
-        {
-            crate::lvgl_init();
+        if !LVGL_IN_USE.compare_and_swap(false, true, Ordering::SeqCst) {
+            unsafe {
+                lvgl_sys::lv_init();
+            }
            Ok(Self {
                _not_sync: PhantomData,
                display_data: None,
@ -73,15 +72,15 @@ where
            // Initialize the display buffer
            lvgl_sys::lv_disp_buf_init(
                disp_buf.as_mut_ptr(),
-                Box::into_raw(Box::new(refresh_buffer1)) as *mut cty::c_void,
-                Box::into_raw(Box::new(refresh_buffer2)) as *mut cty::c_void,
+                Box::into_raw(Box::new(refresh_buffer1)?) as *mut cty::c_void,
+                Box::into_raw(Box::new(refresh_buffer2)?) as *mut cty::c_void,
                lvgl_sys::LV_HOR_RES_MAX * REFRESH_BUFFER_LEN as u32,
            );
            // Basic initialization of the display driver
            lvgl_sys::lv_disp_drv_init(disp_drv.as_mut_ptr());
-            let mut disp_drv = Box::new(disp_drv.assume_init());
+            let mut disp_drv = Box::new(disp_drv.assume_init())?;
            // Assign the buffer to the display
-            disp_drv.buffer = Box::into_raw(Box::new(disp_buf.assume_init()));
+            disp_drv.buffer = Box::into_raw(Box::new(disp_buf.assume_init())?);
            // Set your driver function
            disp_drv.flush_cb = Some(display_callback_wrapper::<T, C>);
            disp_drv.user_data = &mut self.display_data as *mut _ as *mut cty::c_void;
@ -135,7 +134,7 @@ where

 pub(crate) struct DisplayUserData<T, C>
 where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
    display: T,
@ -147,7 +146,7 @@ unsafe extern "C" fn display_callback_wrapper<T, C>(
    area: *const lvgl_sys::lv_area_t,
    color_p: *mut lvgl_sys::lv_color_t,
 ) where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
    // In the `std` world we would make sure to capture panics here and make them not escape across
@ -164,12 +163,12 @@ unsafe extern "C" fn display_callback_wrapper<T, C>(
        // TODO: Can we do anything when there is a error while flushing?
        let _ = display_flush(&mut user_data.display, (x1, x2), (y1, y2), color_p);
    }
-    // Indicate to LVGL that we are ready with the flushing
+    // Indicate to LittlevGL that we are ready with the flushing
    lvgl_sys::lv_disp_flush_ready(disp_drv);
 }

 // We separate this display flush function to reduce the amount of unsafe code we need to write.
-// This also provides a good separation of concerns, what is necessary from LVGL to work and
+// This also provides a good separation of concerns, what is necessary from LittlevGL to work and
 // what is the lvgl-rs wrapper responsibility.
 fn display_flush<T, C>(
    display: &mut T,
@ -178,7 +177,7 @@ fn display_flush<T, C>(
    color_p: *mut lvgl_sys::lv_color_t,
 ) -> Result<(), T::Error>
 where
-    T: DrawTarget<Color = C>,
+    T: DrawTarget<C>,
    C: PixelColor + From<Color>,
 {
    let ys = y1..=y2;
@ -187,14 +186,17 @@ where

    // We use iterators here to ensure that the Rust compiler can apply all possible
    // optimizations at compile time.
-    let pixels = ys.enumerate().flat_map(|(iy, y)| {
-        xs.clone().map(move |(ix, x)| {
-            let color_len = x_len * iy + ix;
-            let lv_color = unsafe { *color_p.add(color_len) };
-            let raw_color = Color::from_raw(lv_color);
-            Pixel(Point::new(x as i32, y as i32), raw_color.into())
+    let pixels = ys
+        .enumerate()
+        .map(|(iy, y)| {
+            xs.clone().map(move |(ix, x)| {
+                let color_len = x_len * iy + ix;
+                let lv_color = unsafe { *color_p.add(color_len) };
+                let raw_color = Color::from_raw(lv_color);
+                drawable::Pixel(Point::new(x as i32, y as i32), raw_color.into())
+            })
        })
-    });
+        .flatten();

-    display.draw_iter(pixels)
+    Ok(display.draw_iter(pixels)?)
 }