QT-使用串口

配置

greaterThan(QT_MAJOR_VERSION, 4): QT += widgets serialport

1
2
3
#include <QSerialPort>
#include <QSerialPortInfo>
#include <QDebug>

初始化

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
int QWidgetSerialTx::SerialInit(void)
{
    qDebug()<<"SerialInit";
    foreach(const QSerialPortInfo &info, QSerialPortInfo::availablePorts())
    {
        qDebug()<<"Name:"<<info.portName();
        qDebug()<<"Description:"<<info.description();
        qDebug()<<"Manufacturer:"<<info.manufacturer();
        qDebug()<<"Serial Number:"<<info.serialNumber();
    }
    //open serial
    com = new QSerialPort();
    com->setPortName(this->comName);
    if(!com->open(QIODevice::ReadWrite))
    {
        qDebug()<<"Serial open failed!";
        return -1;
    }
    else
        qDebug()<<"Serial open success:"<<com->portName();
    //setting serial
    com->setBaudRate(QSerialPort::Baud115200,QSerialPort::AllDirections);
    com->setDataBits(QSerialPort::Data8);
    com->setFlowControl(QSerialPort::NoFlowControl);
    com->setParity(QSerialPort::NoParity);
    com->setStopBits(QSerialPort::OneStop);

    return 0;
}

发送接收

1
2
3
4
5
qint64 write(const char *data, qint64 len);
qint64 write(const char *data);

QByteArray read(qint64 maxlen);
QByteArray readAll();