buildroot配置QT5和tslib

￡神魔★判官ぃ 2021-08-19 20:27 1654阅读 0赞

[buildroot 移植参考文章][buildroot]

## buildroot配置安装qt5 ##

在buildroot下面，打开配置界面

make menuconfig  
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选择target packages项

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找到QT5 勾选  
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进入QT5选项，勾选gui module 和 widgets module。  
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## buildroot编译安装tslib ##

执行make menuconfig

Target packages —>  
Graphic libraries and applications (graphic/text) —>  
\[*\] Qt5 —>  
\[*\] Enable Tslib support

或者qt–>Mouse drivers —>tslib  
编译成功后下载到开发板或nfs mount过去执行ts\_calibration校正看看是否可以.

## 开发板配置 ##

**buildroot 配置中tslib使能后，在 /etc/profile中加入以下内容。**

#!/bin/sh
    export T_ROOT=/usr/tslib4arm                        #目录
    export TSLIB_TSDEVICE=/dev/input/event1                     #触摸屏设备文件
    export TSLIB_CALIBFILE=/etc/pointercal                #指定触摸屏校准文件pintercal的存放位置
    export TSLIB_CONFFILE=/etc/ts.conf             #tslib模块配置文件
    export TSLIB_PLUGINDIR=/usr/lib/ts/                #tslib插件库目录
    export TSLIB_CONSOLEDEVICE=/dev/tty
    export TSLIB_FBDEVICE=/dev/fb0                        #framebuffer设备文件
    echo "tslib init success!"

\#生效  
source /etc/profile

如果没有设置上面环境变量将出现以下错误：
    错误1：tslib: Selected device is not a touchscreen (must support ABS_X and ABS_Y events
    错误2：ts_open: No such file or directory

**执行QT程序：**  
./analogclock -platform linuxfb

如果执行./analogclock出现如下错误：
    could not find or load the Qt platform plugin "xcb"
    或者 could not find or load the Qt platform plugin "eglfs"

在后面加 -platform linuxfb，即可执行。  
![在这里插入图片描述][20191203161303780.png]

## 找不到字体库解决方法 ##

# ./qt_test_app -platform linuxfb
    
    QFontDatabase: Cannot find font directory /usr/lib/fonts.
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
    QFontDatabase: Cannot find font directory /usr/lib/fonts.
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
    QFontDatabase: Cannot find font directory /usr/lib/fonts.
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
    QFontDatabase: Cannot find font directory /usr/lib/fonts.
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.
    QFontDatabase: Cannot find font directory /usr/lib/fonts.
    Note that Qt no longer ships fonts. Deploy some (from http://dejavu-fonts.org for example) or switch to fontconfig.

去Windows路径C:\\Windows\\Fonts下拷贝字体（ttf后缀）到目标平台/usr/lib/fonts下即可。

[buildroot]: https://blog.csdn.net/u012577474/article/details/103365889
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[20191203161303780.png]: /images/20210726/0dbd805a45bb404fa58b8b4c3571f99a.png