Merge branch 'master' of https://github.com/littlevgl/lvgl into dev-5.2

README.md

@@ -1,6 +1,6 @@
-# Littlev Graphics Libraray
+# Littlev Graphics Library
 
-![LittlevGL cover](http://www.gl.littlev.hu/home/main_cover_small.png)
+![LittlevGL cover](https://littlevgl.com/docs/themes/lv_theme_intro.png)
 
 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.
 
@@ -11,18 +11,19 @@ Homepage: https://littlevgl.com
 * [Porting](#porting)
 * [Project set-up](#project-set-up)
 * [PC simulator](#pc-simulator)
+* [Related repositories](#related-repositories)
 * [Screenshots](#screenshots)
 * [Contributing](#contributing)
 * [Donate](#donate)
 
 ## Key features
-* Powerful building blocks buttons, charts, lists, sliders, images etc
+* Powerful building blocks: buttons, charts, lists, sliders, images, etc.
 * Advanced graphics with animations, anti-aliasing, opacity, smooth scrolling
-* Various input devices touch pad, mouse, keyboard, encoder, buttons etc
+* Various input devices: touch pad, mouse, keyboard, encoder, buttons, etc.
-* Multi language support with UTF-8 decoding
+* Multi-language support with UTF-8 encoding
 * Fully customizable graphical elements
 * Hardware independent to use with any microcontroller or display
-* Scalable to operate with few memory (50 kB Flash, 10 kB RAM)
+* Scalable to operate with little memory (50 kB Flash, 10 kB RAM)
 * OS, External memory and GPU supported but not required
 * Single frame buffer operation even with advances graphical effects
 * Written in C for maximal compatibility
@@ -31,19 +32,20 @@ Homepage: https://littlevgl.com
 * Documentation and API references online
 
 ## Porting
-In the most sime case you need 4 things:
+In the simplest case you need 5 things:
-1. Call `lv_tick_inc(1)` in every millisecods in a Timer or Task
+1. Call `lv_tick_inc(x)` every `x` millisecods in a Timer or Task (`x` should be between 1 and 10)
 2. Register a function which can **copy a pixel array** to an area of the screen.
 3. Register a function which can **read an input device**. (E.g. touch pad)
-4. Call `lv_task_handler()` periodically in every few milliseconds
+4. Copy `lv_conf_templ.h` as `lv_conf.h` and set at least `LV_HOR_RES`, `LV_VER_RES` and `LV_COLOR_DEPTH`. 
-For more information visit https://littlevgl.com/porting
+5. Call `lv_task_handler()` periodically every few milliseconds.
+For a detailed description visit https://littlevgl.com/porting
 Or check the [Porting tutorial](https://github.com/littlevgl/lv_examples/blob/master/lv_tutorial/0_porting/lv_tutorial_porting.c)
  
 ## Project set-up
 1. **Clone** or [Download](https://littlevgl.com/download) the lvgl repository: `git clone  https://github.com/littlevgl/lvgl.git`
 2. **Create project** with your prefered IDE and add the *lvgl* folder
 3. Copy **lvgl/lv_conf_templ.h** as **lv_conf.h** next to the *lvgl* folder
-4. In the lv_conf.h delete the first `#if 0` and its `#endif`. Let the default configurations at first.
+4. In the lv_conf.h delete the first `#if 0` and its `#endif`. Leave the default configuration for the first try.
 5. In your *main.c*: #include "lvgl/lvgl.h"   
 6. In your *main function*:
    * lvgl_init();
@@ -53,10 +55,16 @@ Or check the [Porting tutorial](https://github.com/littlevgl/lv_examples/blob/ma
 9. Compile the code and load it to your embedded hardware
 
 ## PC Simulator
-If you don't have got an embedded hardware you can test the graphics library in a PC simulator. The simulator uses [SDL2](https://www.libsdl.org/) to emulate a display on your monitor and a touch pad with your mouse.
+If you don't have an embedded hardware you can test the graphics library in a PC simulator. The simulator uses [SDL2](https://www.libsdl.org/) library to emulate a display on your monitor and a touch pad with your mouse.
 
 There is a pre-configured PC project for **Eclipse CDT** in this repository: https://github.com/littlevgl/pc_simulator
 
+## Related repositories
+* PC simualtor: https://github.com/littlevgl/pc_simulator
+* Projects: https://github.com/littlevgl/lv_projects
+* Examples: https://github.com/littlevgl/lv_examples
+* Drivers: https://github.com/littlevgl/lv_drivers
+
 ## Screenshots
 ![TFT material](http://www.gl.littlev.hu/github_res/tft_material.png)
 ![TFT zen](http://www.gl.littlev.hu/github_res/tft_zen.png)
@@ -67,6 +75,6 @@ There is a pre-configured PC project for **Eclipse CDT** in this repository: htt
 See [CONTRIBUTING.md](https://github.com/littlevgl/lvgl/blob/master/docs/CONTRIBUTING.md)
 
 ## Donate
-If you are pleased with the graphics library, found it useful or be happy with the support you got, please help its further development:
+If you are pleased with this graphics library, found it useful, or are happy with the support you got, please help its further development:
 
 [![Donate](https://littlevgl.com/donate_dir/donate_btn.png)](https://littlevgl.com/donate)