目录
前言
本次笔记主要记录博主移植lvgl到linux上的过程。
先移植官方推荐的lvgl,基于linux SDL2,makefile编译方式。
另外还会分别移植lvgl v8.0 和 lvgl v8.3两个版本。都是基于SDL2多媒体框架和CMAKE编译。
lvgl v8.3版本后面有时间再整理出来。
参考:
linux安装SDL2
sudo apt-get update && sudo apt-get install -y build-essential libsdl2-dev
官方推荐
参考:
- Simulator project for LVGL embedded GUI Library:https://github.com/lvgl/lv_port_pc_vscode
拉取lvgl PC 模拟子模块vscode sdl:
git clone --recursive https://github.com/lvgl/lv_sim_vscode_sdl
下载完如下图:
然后直接make:
make
转到lv_sim_vscode_sdl/build/bin执行demo固件即可:
./demo
结果如图:
如果上述clone下面这三个库时较慢,可以手动下载库文件,再复制到lv_sim_vscode_sdl目录下对应的目录中:(选同一版本)
lvgl库下载 :https://github.com/lvgl/lvgl.git
lvgl_drivers库下载 :https://github.com/lvgl/lv_drivers.git
lv_examples库下载 :https://github.com/lvgl/lv_examples.git
移植lvgl v8.0
打算搭建自己学习、调试lvgl的SDK,用CMAKE编译,所以就自己手把手构建SDK和移植lvgl。
目录框架
目录构建如下:
- app:专门存放学习、调试的UI app程序。
- build:用于编译。
- lib:第三方库。
- src:主要起始文件,如main.c。
- ui:lvgl源码、lvgl驱动等UI库文件。
- CMakeLists.txt:cmake编译顶层文件。
拉取lvgl
进入ui文件夹,clone两个库:
git clone -b release/v8.0 https://github.com/lvgl/lvgl.git
git clone -b release/v8.0 https://github.com/lvgl/lv_drivers.git
添加lv_conf.h和lv_drv_conf.h配置文件
lv_conf.h
添加lv_conf.h:在lvgl目录下
cp lv_conf_template.h lv_conf.h
使能该文件:改成1
#if 1 /*Set it to "1" to enable content*/
lv_drv_conf.h
- 添加lv_drv_conf.h:在lvgl目录下
cp lv_drv_conf_template.h lv_drv_conf.h
- 使能该文件:改成1
#if 1 /*Set it to "1" to enable content*/
开启SDL需要的宏:
- 把
USE_MONITOR
宏改成1。我们用monitor来模拟。 USE_MOUSE
改成1。用到鼠标。USE_MOUSEWHEEL
改成1。鼠标滚轮也用到。USE_KEYBOARD
改成1。用到键盘。
- 把
构建main.c
可以直接拷贝
lv_sim_vscode_sdl/main/src/m*
。- 我把该目录下的两个文件都cp过来了。
main.c
把头文件改成如下:
/*********************
* INCLUDES
*********************/
#define _DEFAULT_SOURCE /* needed for usleep() */
#include <stdlib.h>
#include <unistd.h>
#define SDL_MAIN_HANDLED /*To fix SDL's "undefined reference to WinMain" issue*/
#include <SDL2/SDL.h>
#include "lvgl.h"
#include "examples/lv_examples.h"
#include "monitor.h"
#include "mouse.h"
#include "keyboard.h"
#include "mousewheel.h"
main.c
把lv_demo_widgets();
demo注释掉。mouse_cursor_icon.c
的头文件改成:
#include "lvgl.h"
构建自己的CMAKE
lvgl 8.0版本我打算全盘使用自己构建的cmake。
lvgl 8.3版本我打算兼容原生库的构建的cmake。
顶层目录下的cmake:
cmake_minimum_required(VERSION 3.0.0)
set(target lzm_lvgl_test_bin)
project(${target} VERSION 0.1.0)
set(src_lvgl_test
src/main.c
src/mouse_cursor_icon.c
)
add_executable(${target} ${src_lvgl_test})
include_directories(/usr/include)
target_link_libraries(${target} PRIVATE lzm_lvgl_lib lzm_lvgl_drv_lib)
target_link_libraries(${target} PRIVATE SDL2)
add_subdirectory(ui)
./ui:
target_compile_definitions(${target} PUBLIC "-DLV_CONF_INCLUDE_SIMPLE")
target_compile_definitions(${target} PUBLIC "-DLV_LVGL_H_INCLUDE_SIMPLE")
add_subdirectory(lvgl)
add_subdirectory(lv_drivers)
./ui/lvgl:
set(target lzm_lvgl_lib)
add_library(${target} STATIC)
target_compile_definitions(${target} PUBLIC "-DLV_CONF_INCLUDE_SIMPLE")
target_compile_definitions(${target} PUBLIC "-DLV_LVGL_H_INCLUDE_SIMPLE")
target_include_directories(${target} PUBLIC ./)
target_include_directories(${target} PUBLIC ./src)
target_include_directories(${target} PUBLIC ./src/core)
target_include_directories(${target} PUBLIC ./src/draw)
target_include_directories(${target} PUBLIC ./src/extra)
target_include_directories(${target} PUBLIC ./src/font)
target_include_directories(${target} PUBLIC ./src/gpu)
target_include_directories(${target} PUBLIC ./src/hal)
target_include_directories(${target} PUBLIC ./src/misc)
target_include_directories(${target} PUBLIC ./src/widgets)
# app include
target_include_directories(${target} PUBLIC ./examples)
# app src
file(GLOB_RECURSE src_lvgl_app examples/*.c)
file(GLOB_RECURSE src_lvgl src/*.c)
target_sources(${target} PRIVATE
${src_lvgl}
${src_lvgl_app}
)
./ui/lv_drivers:
set(target lzm_lvgl_drv_lib)
add_library(${target} STATIC)
target_link_libraries(${target} PUBLIC lzm_lvgl_lib)
target_include_directories(${target} PUBLIC ./)
target_include_directories(${target} PUBLIC ./display)
target_include_directories(${target} PUBLIC ./gtkdrv)
target_include_directories(${target} PUBLIC ./indev)
target_include_directories(${target} PUBLIC ./wayland)
target_include_directories(${target} PUBLIC ./win32drv)
file(GLOB_RECURSE src_lvgl_drv ./*.c)
target_sources(${target} PRIVATE
${src_lvgl_drv}
)
编译
- 在./build路径下进行
cmake ..
:结果如下,Makefile创建成功:
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ cmake ..
-- The C compiler identification is GNU 9.4.0
-- The CXX compiler identification is GNU 9.4.0
-- Detecting C compiler ABI info
-- Detecting C compiler ABI info - done
-- Check for working C compiler: /usr/bin/cc - skipped
-- Detecting C compile features
-- Detecting C compile features - done
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Configuring done
-- Generating done
-- Build files have been written to: /home/jamie/work/study/lvgl/lzm_lvgl_v8.0/build
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ ls
CMakeCache.txt CMakeFiles cmake_install.cmake Makefile ui
- 然后直接make,遇错就改:
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ make
[ 90%] Built target lzm_lvgl_lib
Consolidate compiler generated dependencies of target lzm_lvgl_drv_lib
[ 98%] Built target lzm_lvgl_drv_lib
Consolidate compiler generated dependencies of target lzm_lvgl_test_bin
[ 98%] Building C object CMakeFiles/lzm_lvgl_test_bin.dir/src/mouse_cursor_icon.c.o
[ 99%] Linking C executable lzm_lvgl_test_bin
[100%] Built target lzm_lvgl_test_bin
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$
- 执行:
jamie@lzm-vm-linux:~/work/study/lvgl/lzm_lvgl_v8.0/build$ ./lzm_lvgl_test_bin