本文介绍: Qt工业上的使用场景包括工业自动化嵌入式系统汽车行业、航空航天、医疗设备制造业和物联网应用。Qt被用来开发工业设备用户界面控制系统嵌入应用和其他工业应用,因其跨平台性和丰富的功能而备受青睐。Qt能够为工业领域带来什么好处:- Qt提供了强大的图形引擎,使开发人员能够创建具有吸引力和高性能用户界面– Qt允许开发人员根据具体需求定制用户界面功能。这对于满足不同行业和项目的独特需求至关重要,使工业应用能够实现个性化的解决方案

Qt在工业上的使用场景包括工业自动化嵌入系统汽车行业、航空航天、医疗设备、制造业和物联网应用。Qt被用来开发工业设备的用户界面控制系统嵌入式应用和其他工业应用,因其跨平台性和丰富的功能而备受青睐。

Qt能够为工业领域带来什么好处:
– Qt提供了强大的图形引擎,使开发人员能够创建具有吸引力和高性能用户界面
– Qt允许开发人员根据具体需求定制用户界面功能。这对于满足不同行业和项目的独特需求至关重要,使工业应用能够实现个性化的解决方案
– Qt提供了丰富的库和工具,涵盖了各种应用程序开发需求,包括图形、网络通信多媒体处理数据存储等。这简化了工业应用程序开发流程
– Qt可以轻松与各种硬件设备和通信协议集成,这对于工业自动化控制系统来说非常重要,因为它们需要与各种传感器执行器和其他工业设备进行通信

创龙科技基于全志双核Cortex-A7@1.2GHz处理器T113-i,精心设计的全国产工业开发板,它提供了Qt的运行环境可以我们快速部署工业领域的用户交互界面控制系统等。

接下来我们来聊聊如何在创龙科技T113-i工业开发板部署Qt应用。

开发板Qt运行环境

开发板SDK准备
rice@rice:~$ mkdir t113             //创建t113工作目录然后压缩包拷贝到此目录
rice@rice:~$ cd t113
....

rice@rice:~/t113$ tar -zxvf SDK-T113-i_v1.0.tar.gz
rice@rice:~/t113$ cd T113-i_v1.0/
rice@rice:~/t113/T113-i_v1.0$ ls
brandy  buildroot  device  install_tools.sh  out       rtos-dsp  tools
build   build.sh   kernel  platform          test
rice@rice:~/t113/T113-i_v1.0$ ./install_tools.sh
[sudo] password for rice: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
texinfo is already the newest version (6.5.0.dfsg.1-2).
0 upgraded, 0 newly installed, 0 to remove and 121 not upgraded.
Reading package lists... Done
Building dependency tree       
Reading state information... Done
pkg-config is already the newest version (0.29.1-0ubuntu2).
0 upgraded, 0 newly installed, 0 to remove and 121 not upgraded.
Reading package lists... Done

......

rice@rice:~/t113$ tar -xvf dl.tar.gz -C ~/t113/buildroot/buildroot-201902/
构建Qt固件
rice@rice:~/t113/T113-i_v1.0$ ./build.sh distclean
rice@rice:~/t113/T113-i_v1.0$ ./build.sh config
Welcome to mkscript setup progress
All available platform:
 0. linux
Choice [linux]: 0
All available linux_dev:
 0. bsp
 1. dragonboard
 2. longan
 3. tinyos
Choice [longan]: 2
All available kern_ver:
 0. linux-5.4
Choice [linux-5.4]: 0
All available ic:
 0. t113
 1. t113_i
Choice [t113_i]: 1
All available board:
 0. evb1
 1. evb1_auto
 2. evb1_auto_nand
 3. evb1_auto_nor
 4. tlt113-evm-emmc
 5. tlt113-evm-nand
 6. tlt113-minievm-emmc
 7. tlt113-minievm-nand
Choice [tlt113-evm-nand]: 5
All available output_configs:
 0. hdmi
 1. lvds-lcd
 2. mipi-lcd
 3. tft-lcd
 4. cvbs
Choice [hdmi]: 0
All available flash:
 0. default
 1. nor
Choice [default]: 0
All available build_root:
 0. buildroot-201902
 1. ubuntu
Choice [buildroot-201902]: 0
All available gnueabi:
 0. gnueabi
 1. gnueabihf
Choice [gnueabi]: 0

rice@rice:~/t113/T113-i_v1.0$ source ./build/envsetup.sh
rice@rice:~/t113/T113-i_v1.0$ ./build.sh
ACTION List: mklichee;========
Execute command: mklichee 
INFO: ----------------------------------------
INFO: build lichee ...
INFO: chip: sun8iw20p1
INFO: platform: linux
INFO: kernel: linux-5.4
INFO: board: tlt113-evm-nand
INFO: output: /home/rice/t113/T113-i_v1.0/out/t113_i/tlt113-evm-nand/longan
INFO: ----------------------------------------
INFO: build buildroot ...
Prepare br toolchain gcc-linaro-5.3.1-2016.05-x86_64_arm-linux-gnueabi.tar.xz...
make: Entering directory '/home/rice/t113/T113-i_v1.0/buildroot/buildroot-201902'

...

rice@rice:~/t113/T113-i_v1.0$ ./build.sh qt
ACTION List: mkqt;========
Execute command: mkqt 
INFO: build Qt ...
INFO: build arm-linux-gnueabi version's Qt
/home/rice/t113/T113-i_v1.0/platform/framework/qt/qt-everywhere-src-5.12.5
Using built-in specs.
COLLECT_GCC=gcc
COLLECT_LTO_WRAPPER=/usr/lib/gcc/x86_64-linux-gnu/7/lto-wrapper
OFFLOAD_TARGET_NAMES=nvptx-none
OFFLOAD_TARGET_DEFAULT=1
Target: x86_64-linux-gnu
Configured with: ../src/configure -v --with-pkgversion='Ubuntu 7.5.0-3ubuntu1~18.04' --with-bugurl=file:///usr/share/doc/gcc-7/README.Bugs --enable-languages=c,ada,c++,go,brig,d,fortran,objc,obj-c++ --prefix=/usr --with-gcc-major-version-only --program-suffix=-7 --program-prefix=x86_64-linux-gnu- --enable-shared --enable-linker-build-id --libexecdir=/usr/lib --without-included-gettext --enable-threads=posix --libdir=/usr/lib --enable-nls --enable-bootstrap --enable-clocale=gnu --enable-libstdcxx-debug --enable-libstdcxx-time=yes --with-default-libstdcxx-abi=new --enable-gnu-unique-object --disable-vtable-verify --enable-libmpx --enable-plugin --enable-default-pie --with-system-zlib --with-target-system-zlib --enable-objc-gc=auto --enable-multiarch --disable-werror --with-arch-32=i686 --with-abi=m64 --with-multilib-list=m32,m64,mx32 --enable-multilib --with-tune=generic --enable-offload-targets=nvptx-none --without-cuda-driver --enable-checking=release --build=x86_64-linux-gnu --host=x86_64-linux-gnu --target=x86_64-linux-gnu
Thread model: posix

.....

rice@rice:~/t113/T113-i_v1.0$ ./build.sh pack
ACTION List: mkpack ;========
Execute command: mkpack  
INFO: packing firmware ...
INFO: Use BIN_PATH: /home/rice/t113/T113-i_v1.0/device/config/chips/t113_i/bin
copying tools file
copying configs file
copying product configs file
/home/rice/t113/T113-i_v1.0/out/pack_out/aultls32.fex
/home/rice/t113/T113-i_v1.0/out/pack_out/aultools.fex
/home/rice/t113/T113-i_v1.0/out/pack_out/boot_package.cfg
/home/rice/t113/T113-i_v1.0/out/pack_out/boot_package.fex

...... 

dsp0.fex Len: 0x3fc78
Vdsp0.fex Len: 0x4
BuildImg 0
Dragon execute image.cfg SUCCESS !
----------image is at----------

size:613M  /home/rice/t113/T113-i_v1.0/out/t113_i_linux_tlt113-evm-nand-sdboot_uart0.img

pack finish

运行环境验证

下载运行实例

rice@rice:~/t113/qt-demos/led_control/bin$ scp led_control root@ip:~/
创龙T113-i上运行实例
root@T113-Tronlong:~# killall Launcher
root@T113-Tronlong:~# source /etc/qtenv.sh 
add /dev/input/event1 to Qt Application.
find qt5 installed done
root@T113-Tronlong:~# ./led_control

Qt开发环境

开发环境下载

开发环境交叉编译环境配置

开发Qt应用

  1. 板载LED灯控制代码实现:
static QString ledPath = "/sys/class/leds/user-led0";

void rice::ledInit()
{
    setLedStatus(0);

    ui->ledPushButton->setText("LED OFF");
    ui->ledPushButton->setStyleSheet("border-width:1px;"
                                     "border-style:solid; "
                                     "border-color:white;"
                                     "background-color:rgba(88, 88, 88, 200)");
}

void rice::ledDeinit()
{

}

bool rice::setLedStatus(int status)
{
    QString cmd = "echo " + QString::number(status) + " > " + ledPath + "/brightness";
    if (system(cmd.toStdString().c_str()) == -1) {
        printf("set led status failed!n");
        return false;
    }
    return true;
}

int rice::getLedStatus(void)
{
    QString cmd = "cat " + ledPath + "/brightness";
    FILE *fp = popen(cmd.toStdString().c_str(), "r");
    if (fp == nullptr) {
        return -1;
    }

    char led_status[32];
    if (fgets(led_status, sizeof(led_status), fp) == nullptr) {
        printf("fgets error: %sn", cmd.toStdString().c_str());
        pclose(fp);
        return -1;
    }

    pclose(fp);
    return atoi(led_status);
}

void rice::on_ledPushButton_clicked()
{
    int ledStatus = getLedStatus();
    if (ledStatus == 0) {
        setLedStatus(1);
        ui->ledPushButton->setText("LED ON");
        ui->ledPushButton->setStyleSheet("border-width:1px;"
                                         "border-style:solid; "
                                         "border-color:white;"
                                         "background-color:rgba(00, 205, 00, 255)");
    }
    else {
        setLedStatus(0);
        ui->ledPushButton->setText("LED OFF");
        ui->ledPushButton->setStyleSheet("border-width:1px;"
                                         "border-style:solid; "
                                         "border-color:white;"
                                         "background-color:rgba(88, 88, 88, 200)");
    }
}
  1. 板载按键检测代码实现:
void rice::keyInit()
{
    keyFd = open(keyPath.toUtf8().data(), O_RDONLY);
    if(keyFd == -1)
    {
        printf("Can not open file(%s)", keyPath.toUtf8().data());
        return;
    }
    ui->keyTextEdit->append("Key Monitor!n");
    ui->keyTextEdit->append("Key user0 pressed!");

    keyNotify = new QSocketNotifier(this->keyFd, QSocketNotifier::Read, this);
    connect(this->keyNotify, SIGNAL(activated(int)), this, SLOT(keyHandler()));
}

void rice::keyDeinit()
{

}

void rice::keyHandler()
{
    struct input_event buf;

    if(read(keyFd, &buf, sizeof(struct input_event)) > 0)
    {
        if(buf.code == KEY_PROG1 && buf.value == 1)
        {
            ui->keyTextEdit->append("Key user0 pressed!");
        }
    }
}
  1. RTC时钟获取并显示,代码实现:
void rice::dateInit()
{
    struct rtc_time rtc_tm_temp;
    dateFd = open(datePath.toUtf8().data(), O_RDONLY);
    if(dateFd == -1)
    {
        printf("Can not open file(%s)", keyPath.toUtf8().data());
        return;
    }
    if(ioctl(dateFd, RTC_RD_TIME, &amp;rtc_tm_temp) < 0)
    {
        printf("Get date failed");
        return;
    }
    ui->yearLineEdit->setText(QString::number(rtc_tm_temp.tm_year + 1900));
    ui->monthLineEdit->setText(QString::number(rtc_tm_temp.tm_mon + 1));
    ui->dayLineEdit->setText(QString::number(rtc_tm_temp.tm_mday));
}

void rice::dateDeint()
{

}
  1. 网络调试助手代码实现:
void rice::netInit()
{
    server = new QTcpServer();
    socket = new QTcpSocket();
}

void rice::netDeint()
{

}

void rice::netNewClientConnect()
{
    socket = server->nextPendingConnection();
    connect(socket, &amp;QTcpSocket::readyRead, this, &amp;rice::netNewRcve);
}

void rice::on_netPushButton_clicked()
{
    int port = ui->portLineEdit->text().toInt();
    if(ui->netPushButton->text() == tr("Open"))
    {
        if(ui->typeComboBox->currentText() == tr("Server"))
        {
            connect(server, &amp;QTcpServer::newConnection, this, &amp;rice::netNewClientConnect);
            if(!server->listen(QHostAddress::Any, port))
            {
                printf("Listen failedn");
                return;
            }
        }
        else if(ui->typeComboBox->currentText() == tr("Client"))
        {
            QString ip = ui->ipComboBox->currentText();
            socket->abort();
            socket->connectToHost(ip, port);

            if(!socket->waitForConnected(3000))
            {
                printf("Connect server failed");
                return;
            }
            connect(socket, &amp;QTcpSocket::readyRead, this, &amp;rice::netNewRcve);
        }
        ui->netPushButton->setText("Close");
    }
    else if(ui->netPushButton->text() == tr("Close"))
    {
        if(ui->typeComboBox->currentText() == tr("Server"))
        {
            socket->abort();
            server->close();
        }
        else if(ui->typeComboBox->currentText() == tr("Client"))
        {
            socket->disconnectFromHost();
        }
        ui->netPushButton->setText("Open");
    }
}

void rice::on_sendPushButton_clicked()
{
    if(socket->isOpen())
    {
        socket->write(ui->sendLineEdit->text().toUtf8().data());
    }
}

void rice::netNewRcve()
{
    ui->recvTextEdit->append(socket->readAll());
}

void rice::on_typeComboBox_currentIndexChanged(const QString &amp;arg1)
{
    if(arg1 == tr("Server"))
    {
        ui->ipComboBox->setEditable(false);
    }
    else
    {
        ui->ipComboBox->setEditable(true);
    }
}

Qt应用验证

  1. 板载LED灯控制验证,当点击开关LED按钮时,LED灯会根据状态亮灭:

  1. 当应用运行起来时,会获取RTC时间,并显示:

  1. 当板载按键按下时,窗口会显示按键按下:

  1. 网络调试助手支持TCP客户端和TCP服务器两种类型,下面演示服务器验证开发板设置板子的IP,和端口号然后通过PC上网调试助手连接上板子,并克实现数据收发

原文地址:https://blog.csdn.net/weixin_43094346/article/details/134711412

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