涓插彛灏佽

Posted 2021-01-01

鏍囩锛?a href='http://www.mamicode.com/so/1/private' title='private'>private   stat   鎸囦护   slots   鍙栨暟   nec   bre   har   app   

1銆佸ご鏂囦欢

#ifndef MYSERIAL_H
#define MYSERIAL_H#include <QSerialPort>
#include "mymethod.h"
class MySerial : public QSerialPort
{
    Q_OBJECT

public:
    MySerial(QObject *parent);
    ~MySerial();

private:
    QSerialPort* serialPort = NULL;//涓插彛瀵硅薄
    QByteArray HEAD;//鎶ユ枃澶?/span>
    void init();//鍒濆鍖?/span>private slots:
    void openSlot(SerialPortInfo serialPortInfo);//杩炴帴鍑芥暟
    void rcvSlot();//鎺ユ敹鏁版嵁妲藉嚱鏁?/span>
    void sendSlot(QByteArray ba);//鍙戦€佹暟鎹Ы鍑芥暟
    void closeSlot();//鍏抽棴妲藉嚱鏁?/span>

signals:
    void serialStateSignal(QString info);//鍚戝鍙戝嚭鐨勮皟璇曚俊鎭?/span>
    void getPacketSignal(int type, QByteArray ba);//tcp灏嗕笉鍚岀殑鍖呭彂鍑哄幓
};

#endif // MYSERIAL_H

2銆佹簮鏂囦欢

#include "myserial.h"

MySerial::MySerial(QObject *parent)
: QSerialPort(parent)
{
    this->init();
}

MySerial::~MySerial()
{

}


/*****************************************************************/
//浣滆€?鏈卞皬鍕?
//鍑芥暟鍚嶇О:鍒濆鍖?
//鍑芥暟鍙傛暟:NULL
//鍑芥暟杩斿洖鍊?NULL
//鍑芥暟浣滅敤:NULL
//澶囨敞:NULL
/*****************************************************************/
void MySerial::init()
{
    HEAD.resize(2); HEAD[0] = 0x55; HEAD[1] = 0xAA;
}

/*****************************************************************/
//浣滆€?鏈卞皬鍕?
//鍑芥暟鍚嶇О:鎵撳紑涓插彛
//鍑芥暟鍙傛暟:NULL
//鍑芥暟杩斿洖鍊?NULL
//鍑芥暟浣滅敤:NULL
//澶囨敞:NULL
/*****************************************************************/
void MySerial::openSlot(SerialPortInfo serialPortInfo)
{
    if (NULL == serialPort)
    {
        serialPort = new QSerialPort();
        QObject::connect(serialPort, SIGNAL(readyRead()), this, SLOT(rcvSlot()));
    }
    if (serialPort->isOpen())
    {
        return;
    }
    serialPort->setPortName(serialPortInfo.portName);
    serialPort->setBaudRate(serialPortInfo.baudRate, QSerialPort::AllDirections);
    serialPort->setDataBits(serialPortInfo.dataBits);//鏁版嵁浣?/span>
    serialPort->setParity(serialPortInfo.parity);//鏍￠獙浣?/span>
    serialPort->setStopBits(serialPortInfo.stopBits);//鍋滄浣?/span>
    serialPort->setFlowControl(QSerialPort::NoFlowControl);//娴佹帶鍒?/span>
    if (serialPort->open(QIODevice::ReadWrite))//鎵撳紑涓插彛
    {
        emit serialStateSignal("涓插彛鎵撳紑鎴愬姛...");
    }
    else
    {
        emit serialStateSignal("涓插彛鎵撳紑澶辫触!!!");
    }
}

/*****************************************************************/
//浣滆€?鏈卞皬鍕?
//鍑芥暟鍚嶇О:鎺ユ敹鏁版嵁
//鍑芥暟鍙傛暟:NULL
//鍑芥暟杩斿洖鍊?NULL
//鍑芥暟浣滅敤:NULL
//澶囨敞:NULL
/*****************************************************************/
void MySerial::rcvSlot()
{
    static QByteArray allBa;//鐢ㄦ潵瀛樻墍鏈夋枃浠?/span>
    allBa.append(serialPort->readAll());//璇诲彇鏁版嵁
    int head = allBa.indexOf(HEAD);//鎶ユ枃澶寸殑浣嶇疆
    uint16_t length = 0;//瀛橀暱搴﹀瓧鑺?/span>
    QByteArray currentBa;
    int id = 0;
    while (-1 != head)
    {
        allBa = allBa.mid(head);//鍘绘帀鎶ュご涔嬪墠鐨?/span>
        memcpy(&length, allBa.data() + 2, 2);
        if (allBa.size() >= length)//闀垮害澶?杩涜瑙ｆ瀽
        {
            currentBa = allBa.mid(0, length);//鑾峰彇褰撳墠瀹屾垚鍖?/span>
            id = Mymethod::getPacketType(currentBa);
            if (-1 != id)
            {
                emit getPacketSignal(id, currentBa);
            }
            allBa = allBa.mid(2);
        }
        else
        {
            break;
        }
        head = allBa.indexOf(HEAD);//鍒锋柊鎶ユ枃澶寸殑浣嶇疆
    }
}

/*****************************************************************/
//浣滆€?鏈卞皬鍕?
//鍑芥暟鍚嶇О:鍙戦€?
//鍑芥暟鍙傛暟:NULL
//鍑芥暟杩斿洖鍊?NULL
//鍑芥暟浣滅敤:NULL
//澶囨敞:NULL
/*****************************************************************/
void MySerial::sendSlot(QByteArray ba)
{
    if (NULL == serialPort)
    {
        emit serialStateSignal("涓插彛鏈垵濮嬪寲!!!");
        return;
    }
    if (!serialPort->isOpen())
    {
        emit serialStateSignal("涓插彛鏈墦寮€!!!");
        return;
    }
    if (ba.size() != serialPort->write(ba))
    {
        emit serialStateSignal("鎸囦护鍙戦€佸け璐?!!");
    }
    else
    {
        emit serialStateSignal("鍙戦€佹寚浠ゆ垚鍔?..");
    }
}

/*****************************************************************/
//浣滆€?鏈卞皬鍕?
//鍑芥暟鍚嶇О:鍏抽棴
//鍑芥暟鍙傛暟:NULL
//鍑芥暟杩斿洖鍊?NULL
//鍑芥暟浣滅敤:NULL
//澶囨敞:NULL
/*****************************************************************/
void MySerial::closeSlot()
{
    if (NULL == serialPort)
    {
        return;
    }
    serialPort->close();
    emit serialStateSignal("宸插叧闂覆鍙?..");
}

3銆佽嚜瀹氫箟鍑芥暟锛岃幏鍙栨姤鏂囩被鍨?/p>

int Mymethod::getPacketType(const QByteArray& ba)
{
    int result = -1;
    uint16_t length = 0;
    if ((ba[0] == (char)0x55) && (ba[1] == (char)0xAA))//鎶ユ枃澶存纭?/span>
    {
        memcpy(&length, ba.data() + 2, 2);
        if (length == ba.size())//闀垮害姝ｇ‘
        {
            QByteArray tempBa; tempBa.resize(ba.size() - 1);
            memcpy(tempBa.data(), ba.data(), ba.size() - 1);
            char crc = Mymethod::CRC(tempBa);
            if (crc == ba[ba.size() - 1])//CRC姝ｇ‘
            {
                result = (int)ba[4];
            }
        }
    }
    return result;
}