【Qt开发】Qt5.7串口开发
QT5有专门的串口类：
QSerialPort：提供访问串口的功能
QSerialPortInfo：提供系统中存在的串口的信息
具体使用方法：
1.在pro文件中加入： QT += serialport
2.mainwindow.h中添加头文件及成员：
<code class="hljs vala has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#include <QSerialPort></span>
<span class="hljs-preprocessor" style="color: rgb(68, 68, 68); box-sizing: border-box;">#include <QSerialPortInfo></span></code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li></ul>
<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">public</span>:
QSerialPort serial;<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//串口实例</span>
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> initSeialPort();<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//初始化串口函数</span>
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">private</span> slots://必须加slots
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> <span class="hljs-title" style="box-sizing: border-box;">serialRead</span>(); </code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li></ul>
3.在主窗口添加一个comboBox，一个label，初始化串口
<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">void</span> MainWindow<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;">::initSeialPort</span>()
{
connect(<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">&</span>serial,SIGNAL(readyRead()),this,SLOT(serialRead())); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//连接槽</span> <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//获取计算机上所有串口并添加到comboBox中</span>
QList<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;"><</span>QSerialPortInfo<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">></span> infos <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span> QSerialPortInfo<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;">::availablePorts</span>();
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(infos<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>isEmpty())
{
ui<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>comboBox<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>addItem(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"无串口"</span>);
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">return</span>;
}
foreach (QSerialPortInfo info, infos) {
ui<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>comboBox<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>addItem(info<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>portName());
qDebug() <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;"><<</span> info<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>portName();
}
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li></ul>
3.comboBox选择改变事件函数：
<code class="hljs lasso has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-literal" style="color: rgb(0, 102, 102); box-sizing: border-box;">void</span> MainWindow<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;">::on_comboBox_currentIndexChanged</span>(const QString <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">&</span>arg1)
{
QSerialPortInfo info;
QList<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;"><</span>QSerialPortInfo<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">></span> infos <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span> QSerialPortInfo<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;">::availablePorts</span>();
int i <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">=</span> <span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>;
foreach (info, infos) {
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(info<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>portName() <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">==</span> arg1) break;
i<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">++</span>;
}
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(i <span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">!=</span> infos<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>size ()){<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//can find</span>
ui<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>lblStatus<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>setText(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"串口打开成功"</span>);
serial<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>close();
serial<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>setPort(info);
serial<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>open(QIODevice<span class="hljs-tag" style="color: rgb(0, 102, 102); box-sizing: border-box;">::ReadWrite</span>); <span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">//读写打开</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.setBaudRate(QSerialPort::Baud9600); //波特率</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.setDataBits(QSerialPort::Data8); //数据位</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.setParity(QSerialPort::NoParity); //无奇偶校验</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.setStopBits(QSerialPort::OneStop); //无停止位</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.setFlowControl(QSerialPort::NoFlowControl); //无控制</span>
}<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">else</span>{
serial<span class="hljs-built_in" style="color: rgb(102, 0, 102); box-sizing: border-box;">.</span>close();
ui<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>lblStatus<span class="hljs-subst" style="color: rgb(0, 0, 0); box-sizing: border-box;">-></span>setText(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"串口打开失败"</span>);
}
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li><li style="box-sizing: border-box; padding: 0px 5px;">8</li><li style="box-sizing: border-box; padding: 0px 5px;">9</li><li style="box-sizing: border-box; padding: 0px 5px;">10</li><li style="box-sizing: border-box; padding: 0px 5px;">11</li><li style="box-sizing: border-box; padding: 0px 5px;">12</li><li style="box-sizing: border-box; padding: 0px 5px;">13</li><li style="box-sizing: border-box; padding: 0px 5px;">14</li><li style="box-sizing: border-box; padding: 0px 5px;">15</li><li style="box-sizing: border-box; padding: 0px 5px;">16</li><li style="box-sizing: border-box; padding: 0px 5px;">17</li><li style="box-sizing: border-box; padding: 0px 5px;">18</li><li style="box-sizing: border-box; padding: 0px 5px;">19</li><li style="box-sizing: border-box; padding: 0px 5px;">20</li><li style="box-sizing: border-box; padding: 0px 5px;">21</li><li style="box-sizing: border-box; padding: 0px 5px;">22</li><li style="box-sizing: border-box; padding: 0px 5px;">23</li><li style="box-sizing: border-box; padding: 0px 5px;">24</li></ul>
4.串口发送
<code class="hljs cs has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;"><span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">void</span> MainWindow::on_btnSend_clicked()
{
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// QByteArray arr = "abcd";</span>
<span class="hljs-comment" style="color: rgb(136, 0, 0); box-sizing: border-box;">// serial.write(arr);</span>
<span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">char</span> dat[] = {<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x55</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x01</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x05</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0x00</span>,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0xAA</span>};
serial.write(dat,<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">5</span>);
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul>
5.串口接收，需添加一个textEdit。
<code class="hljs ruby has-numbering" style="display: block; padding: 0px; color: inherit; box-sizing: border-box; font-family: "Source Code Pro", monospace;font-size:undefined; white-space: pre; border-radius: 0px; word-wrap: normal; background: transparent;">void <span class="hljs-constant" style="box-sizing: border-box;">MainWindow::</span>serialRead()
{
<span class="hljs-constant" style="box-sizing: border-box;">QByteArray</span> qa = serial.readAll();
<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> <span class="hljs-keyword" style="color: rgb(0, 0, 136); box-sizing: border-box;">if</span>(qa.at(<span class="hljs-number" style="color: rgb(0, 102, 102); box-sizing: border-box;">0</span>)==<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">'a'</span>)
ui->textEdit->append(qa);
<span class="hljs-regexp" style="color: rgb(0, 136, 0); box-sizing: border-box;">//</span> <span class="hljs-constant" style="box-sizing: border-box;">QMessageBox::</span>warning (this,tr(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"提示信息"</span>),tr(<span class="hljs-string" style="color: rgb(0, 136, 0); box-sizing: border-box;">"串口接收成功"</span>));
}</code><ul class="pre-numbering" style="box-sizing: border-box; position: absolute; width: 50px; top: 0px; left: 0px; margin: 0px; padding: 6px 0px 40px; border-right: 1px solid rgb(221, 221, 221); list-style: none; text-align: right; background-color: rgb(238, 238, 238);"><li style="box-sizing: border-box; padding: 0px 5px;">1</li><li style="box-sizing: border-box; padding: 0px 5px;">2</li><li style="box-sizing: border-box; padding: 0px 5px;">3</li><li style="box-sizing: border-box; padding: 0px 5px;">4</li><li style="box-sizing: border-box; padding: 0px 5px;">5</li><li style="box-sizing: border-box; padding: 0px 5px;">6</li><li style="box-sizing: border-box; padding: 0px 5px;">7</li></ul><div class="save_code tracking-ad" data-mod="popu_249" style="box-sizing: border-box; position: absolute; height: 60px; right: 30px; top: 5px; color: rgb(255, 255, 255); cursor: pointer; z-index: 2;"><a target=_blank target="_blank" style="color: rgb(106, 57, 6); box-sizing: border-box;"><img src="http://static.blog.csdn.net/images/save_snippets.png" style="border: none; box-sizing: border-box; max-width: 100%;" alt="" /></a></div>
可以用虚拟串口软件和丁丁串口助手调试。
【Qt开发】Qt5.7串口开发的更多相关文章
- 【神经网络与深度学习】【Qt开发】【VS开发】从caffe-windows-visual studio2013到Qt5.7使用caffemodel进行分类的移植过程
[神经网络与深度学习][CUDA开发][VS开发]Caffe+VS2013+CUDA7.5+cuDNN配置成功后的第一次训练过程记录<二> 标签:[神经网络与深度学习] [CUDA开发] ...
- Qt5.12.2开发Android环境搭建
Qt-Android开发环境概要qt-opensource-windows-x86-5.12.2----armv7jdk-8u201-windows-x64android-ndk-r18b-windo ...
- 快速阅读《QT5.9 c++开发指南》1
简介:<QT5.9 c++开发指南>的作者是和i三位主要从事地球物理探测仪器设计.数据处理方法研究和软件开发等工作的博士们,这本书以QT Widget为主要内容,比较全面地教授了QT开发桌 ...
- 【Qt开发】【VS开发】【Linux开发】OpenCV、Qt-MinGw、Qt-msvc、VS2010、VS2015、Ubuntu Linux、ARM Linux中几个特别容易混淆的内容
[Qt开发][VS开发][Linux开发]OpenCV.Qt-MinGw.Qt-msvc.VS2010.VS2015.Ubuntu Linux.ARM Linux中几个特别容易混淆的内容 标签:[Qt ...
- C# 串口开发
在单片机项目开发中,上位机也是一个很重要的部分,主要用于数据显示(波形.温度等).用户控制(LED,继电器等),下位机(单片机)与 上位机之间要进行数据通信的两种方式都是基于串口的: USB转串口 - ...
- KL25开发板利用串口蓝牙与PC通信
KL25开发板芯片本身支持三个串口,uart0,uart1,uart2.其中uart0不太一样,在数据手册里面单独一章介绍:而uart1和uart2则是一样的. 我所使用的串口蓝牙模块是BC04,支持 ...
- android 串口开发第二篇:利用jni实现android和串口通信
一:串口通信简介 由于串口开发涉及到jni,所以开发环境需要支持ndk开发,如果未配置ndk配置的朋友,或者对jni不熟悉的朋友,请查看上一篇文章,android 串口开发第一篇:搭建ndk开发环境以 ...
- iTOP-4418开发板和6818开发板-第五路串口介绍
iTOP-4418开发板和6818开发板 的除去默认 4 个串口的配置和用法. 4418 的开发板最多支持 5 路串口,如下图所示,4418 的 datasheet. 6818 的开发板最多支持 ...
- JAVA串口开发帮助类分享－及写在马年末
摘要: 在系统集成开发过程中,存在着各式的传输途径,其中串口经常因其安全性高获得了数据安全传输的重用,通过串口传输可以从硬件上保证数据传输的单向性,这是其它介质所不具备的物理条件.下面我就串口java ...
随机推荐
- springboot 开启缓存
Caching Data with Spring This guide walks you through the process of enabling caching on a Spring ma ...
- 【leetcode】1248. Count Number of Nice Subarrays
题目如下: Given an array of integers nums and an integer k. A subarray is called nice if there are k odd ...
- （转载）Ant自动编译打包android项目
1 Ant自动编译打包android项目 1.1 Ant安装 ant的安装比较简单,下载ant压缩包 http://ant.apache.org (最新的为1.9.3版本),下载之后将其解压 ...
- b2b推广方式有哪些-
b2b推广方式有哪些 老黄牛推广软件订做 Q:935744345 专业团队,高效推广
- CSS样式，语法，添加方法，文本，字体
总结一些css的基础知识 ㈠css样式 css:cascading style sheets 层叠样式表 css内容和样式相分离,便于修改样式. ㈡css语法 ㈢css添加方法 ⑴行内添加:放在&l ...
- 如何开始使用 Akka
如果你是第一次开始使用 Akka,我们推荐你先运行简单的 Hello World 项目.情况参考 Quickstart Guide 页面中的内容来下载和运行 Hello World 示例程序.上面链 ...
- Linux任务计划及周期性任务执行：at、crontab命令
一.概述 未来的某时间点执行一次某任务:at, batch 周期性运行某任务:crontab 这两个任务的执行结果:会通过邮件发送给用户 (本地终端用户之间的邮件通知) centos 5,6,7默认开 ...
- 51Nod 1005 有负数的高精度加法
51Nod是个好地方啊 题意 51Nod基础题第二题,高精度加法,可能有负数. 解题 如果按照一般的高精度,我们发现要分情况讨论,还要写高精度加法和减法,代码实现有点烦.而初中数学里说,省略加号的和. ...
- JS框架_(JQuery.js)高德地图api
百度云盘 传送门 密码 :ko30 高德地图api效果 <!doctype html> <html> <head> <meta charset="u ...
- conda install -c anaconda
有些包在conda默认的channels中不包含,比如cudatoolkit-8.0,cudnn等,这时只需要在conda install指令后加上-c anaconda即可.比如要下载cudatoo ...