RS232 四入四出模块控制代码

#ifndef ZIOMODULE_H
#define ZIOMODULE_H

#include <QObject>
#include <QDebug>
#include <QSerialPort>
#include <QSerialPortInfo>

#define ZDebugInfo    1

#define ADDR_DEST   0x01
const uchar zresponse_failed[]={0xA3,0x0D,0x0A,};
const uchar zcmd_output1_open[]={0x3A,0x88,ADDR_DEST,0x01,0x00,0x0D,0x0A};
const uchar zcmd_output1_close[]={0x3A,0x88,ADDR_DEST,0x01,0xFF,0x0D,0x0A};
const uchar zcmd_output2_open[]={0x3A,0x88,ADDR_DEST,0x02,0x00,0x0D,0x0A};
const uchar zcmd_output2_close[]={0x3A,0x88,ADDR_DEST,0x02,0xFF,0x0D,0x0A};
const uchar zcmd_output3_open[]={0x3A,0x88,ADDR_DEST,0x03,0x00,0x0D,0x0A};
const uchar zcmd_output3_close[]={0x3A,0x88,ADDR_DEST,0x03,0xFF,0x0D,0x0A};
const uchar zcmd_output4_open[]={0x3A,0x88,ADDR_DEST,0x04,0x00,0x0D,0x0A};
const uchar zcmd_output4_close[]={0x3A,0x88,ADDR_DEST,0x04,0xFF,0x0D,0x0A};
const uchar zresponse_output_open_close[]={0xA3,ADDR_DEST,0x00,0xFF,0x0D,0x0A};

//get all relays status.
const uchar zcmd_get_all_relay_status[]={0x3A,0x99,ADDR_DEST,0x00,0x0D,0x0A};
const uchar zresponse_all_relay_status[]={0xA3,ADDR_DEST,0xFF,0xFF,0xFF,0xFF,0x0D,0x0A};
//get all input status.
const uchar zcmd_get_all_inputs_status[]={0x3A,0x98,ADDR_DEST,0x00,0x0D,0x0A};
const uchar zresponse_all_inputs_status[]={0xA5,ADDR_DEST,0xFF,0xFF,0xFF,0xFF,0x0D,0x0A};



class ZIOModule : public QObject
{
    Q_OBJECT
public:
    typedef enum
    {
        OutputPort1=1,
        OutputPort2=2,
        OutputPort3=3,
        OutputPort4=4,
    }ZOutputPort;
    //portName: ttyUSB0.
    //responseTimeout: the wait time for the device response.
    explicit ZIOModule(QString portName,qint32 responseTimeOut=2000,QObject *parent = 0);
    ~ZIOModule();

    //execute serial port initial operations.
    bool ZDoInit();

    //do some clean work here.
    void ZCleanUp();

    //set output status of specified port.
    bool ZSetOutputPort(ZOutputPort port,bool bOpen);

    //get all output port status.
    qint32 ZGetOutputPortsStatus(qint32 *status);

    //get all input port status.
    qint32 ZGetInputPortsStatus(qint32 *status);

signals:

public slots:

private:
    qint32 ZWriteData(const uchar *cmd,quint32 len);
    bool ZVerifyResponseForOutputOpenClose(qint32 index,bool bOpen);
private:
    QSerialPort *m_serialPort;
    qint32 m_responseTimeout;
};

#endif // ZIOMODULE_H

#include "ziomodule.h"

ZIOModule::ZIOModule(QString portName,qint32 responseTimeOut,QObject *parent) :
    QObject(parent)
{
    this->m_serialPort=new QSerialPort(portName);
    this->m_responseTimeout=responseTimeOut;
}
ZIOModule::~ZIOModule()
{
    delete this->m_serialPort;
}
bool ZIOModule::ZDoInit()
{
    this->m_serialPort->setBaudRate(QSerialPort::Baud9600);
    this->m_serialPort->setDataBits(QSerialPort::Data8);
    this->m_serialPort->setStopBits(QSerialPort::OneStop);
    this->m_serialPort->setParity(QSerialPort::NoParity);
    this->m_serialPort->setFlowControl(QSerialPort::NoFlowControl);
    this->m_serialPort->setReadBufferSize(1024);
    if(!this->m_serialPort->open(QIODevice::ReadWrite))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:"<<this->m_serialPort->errorString();
        qDebug()<<"available ports are:";
        foreach (const QSerialPortInfo &info,QSerialPortInfo::availablePorts())
        {
            qDebug()<<info.portName();
        }
#endif
        return false;
    }
    //clear input buffer before.
    (void)this->m_serialPort->readAll();
    return true;
}
void ZIOModule::ZCleanUp()
{
    this->m_serialPort->flush();
    this->m_serialPort->close();
}
qint32 ZIOModule::ZWriteData(const uchar *cmd,quint32 len)
{
    qint32 tWrites=-1;
    if(this->m_serialPort && this->m_serialPort->isOpen())
    {
        QByteArray tSendBuffer((char*)cmd,len);
        tWrites=this->m_serialPort->write(tSendBuffer);
        this->m_serialPort->waitForBytesWritten(100);
    }
    return tWrites;
}
//set output status of specified port.
bool ZIOModule::ZSetOutputPort(ZOutputPort port,bool bOpen)
{
    qint32 portIndex;
    switch(port)
    {
    case ZIOModule::OutputPort1:
        if(bOpen)
        {
            this->ZWriteData(zcmd_output1_open,sizeof(zcmd_output1_open));
        }else{
            this->ZWriteData(zcmd_output1_close,sizeof(zcmd_output1_close));
        }
        portIndex=1;
        break;
    case ZIOModule::OutputPort2:
        if(bOpen)
        {
            this->ZWriteData(zcmd_output2_open,sizeof(zcmd_output2_open));
        }else{
            this->ZWriteData(zcmd_output2_close,sizeof(zcmd_output2_close));
        }
        portIndex=2;
        break;
    case ZIOModule::OutputPort3:
        if(bOpen)
        {
            this->ZWriteData(zcmd_output3_open,sizeof(zcmd_output3_open));
        }else{
            this->ZWriteData(zcmd_output3_close,sizeof(zcmd_output3_close));
        }
        portIndex=3;
        break;
    case ZIOModule::OutputPort4:
        if(bOpen)
        {
            this->ZWriteData(zcmd_output4_open,sizeof(zcmd_output4_open));
        }else{
            this->ZWriteData(zcmd_output4_close,sizeof(zcmd_output4_close));
        }
        portIndex=4;
        break;
    default:
#ifdef ZDebugInfo
        qDebug()<<"error:invalid output port index!";
#endif
        return false;
    }
    return this->ZVerifyResponseForOutputOpenClose(portIndex,bOpen);
}
bool ZIOModule::ZVerifyResponseForOutputOpenClose(qint32 index,bool bOpen)
{
    Q_UNUSED(index);
    Q_UNUSED(bOpen);
    //here we use sync mode to wait device's response.
    //wait for device response.
    qint32 tWaitTimeout=0;
    while(this->m_serialPort->bytesAvailable()<6)
    {
        this->m_serialPort->waitForReadyRead(1000);
        if(++tWaitTimeout>=3)
        {
#ifdef ZDebugInfo
            qDebug()<<"error:device no response,timeout.";
#endif
            return false;
        }
    }
    QByteArray tRecvBuffer=this->m_serialPort->readAll();
    if(tRecvBuffer.count()!=sizeof(zresponse_output_open_close) && tRecvBuffer.count()!=sizeof(zresponse_failed))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:invalid response!";
        qDebug("success:%d,failed:%d,now is %d.\n",sizeof(zresponse_output_open_close),sizeof(zresponse_failed),tRecvBuffer.count());
#endif
        return false;
    }
    if(tRecvBuffer==QByteArray((const char*)zresponse_failed,sizeof(zresponse_failed)))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:device execute command failed!";
#endif
        return  false;
    }
    //{0xA3,ADDR_DEST,0x00,0xFF,0x0D,0x0A};
    //verify the response byte by byte.
    qint32 tPrefix=(qint32)tRecvBuffer.at(0)&0xFF;
    qint32 tAddr=(qint32)tRecvBuffer.at(1)&0xFF;
    qint32 tSuffix1=(qint32)tRecvBuffer.at(tRecvBuffer.count()-2)&0xFF;
    qint32 tSuffix2=(qint32)tRecvBuffer.at(tRecvBuffer.count()-1)&0xFF;
    if(0xA3!=tPrefix || ADDR_DEST!=tAddr || 0x0D!=tSuffix1 || 0x0A!=tSuffix2)
    {
#ifdef ZDebugInfo
        qDebug()<<"error:specified byte is not right!";
#endif
        return false;
    }
    return true;
}
//get all output ports status.
qint32 ZIOModule::ZGetOutputPortsStatus(qint32 *status)
{
    qint32 ret;
    ret=this->ZWriteData(zcmd_get_all_relay_status,sizeof(zcmd_get_all_relay_status));
    if(ret!=sizeof(zcmd_get_all_relay_status))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:write data failed!";
#endif
        return -1;
    }
    if(!this->m_serialPort->waitForReadyRead(this->m_responseTimeout))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:wait for response timeout!";
#endif
        return -1;
    }
    QByteArray tRecvBuffer=this->m_serialPort->readAll();
    if(tRecvBuffer.count()!=sizeof(zresponse_all_relay_status) && tRecvBuffer.count()!=sizeof(zresponse_failed))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:invalid response!";
#endif
        return -1;
    }
    if(tRecvBuffer==QByteArray((const char*)zresponse_failed,sizeof(zresponse_failed)))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:device execute command failed!";
#endif
        return -1;
    }
    //{0xA3,ADDR_DEST,0xFF,0xFF,0xFF,0xFF,0x0D,0x0A};
    //verify byte by byte.
    qint32 tPrefix=(qint32)tRecvBuffer.at(0)&0xFF;
    qint32 tAddr=(qint32)tRecvBuffer.at(1)&0xFF;
    qint32 tSuffix1=(qint32)tRecvBuffer.at(tRecvBuffer.count()-2)&0xFF;
    qint32 tSuffix2=(qint32)tRecvBuffer.at(tRecvBuffer.count()-1)&0xFF;
    if(0xA3!=tPrefix || ADDR_DEST!=tAddr || 0x0D!=tSuffix1 || 0x0A!=tSuffix2)
    {
#ifdef ZDebugInfo
        qDebug()<<"error:specified byte is not right!";
#endif
        return -1;
    }
    //combine bytes.
    *status=(qint32)tRecvBuffer.at(2)<<24|(qint32)tRecvBuffer.at(3)<<16|(qint32)tRecvBuffer.at(4)<<8|(qint32)tRecvBuffer.at(5)<<0;
    return 0;
}
//get all input port status.
qint32 ZIOModule::ZGetInputPortsStatus(qint32 *status)
{
    qint32 ret;
    ret=this->ZWriteData(zcmd_get_all_inputs_status,sizeof(zcmd_get_all_inputs_status));
    if(ret!=sizeof(zcmd_get_all_inputs_status))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:write data failed!";
#endif
        return -1;
    }

    qint32 waitTimeout=0;
    while(this->m_serialPort->bytesAvailable()<8)
    {
        this->m_serialPort->waitForReadyRead(1000);
        if(++waitTimeout>5)
        {
#ifdef ZDebugInfo
            qDebug("error:device no response!");
#endif
            return -1;
        }
    }

    QByteArray tRecvBuffer=this->m_serialPort->readAll();
    if(tRecvBuffer.count()!=sizeof(zresponse_all_inputs_status) && tRecvBuffer.count()!=sizeof(zresponse_failed))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:invalid response!";
#endif
        return -1;
    }
    if(tRecvBuffer==QByteArray((const char*)zresponse_failed,sizeof(zresponse_failed)))
    {
#ifdef ZDebugInfo
        qDebug()<<"error:device execute command failed!";
#endif
        return -1;
    }
    //{0xA5,ADDR_DEST,0xFF,0xFF,0xFF,0xFF,0x0D,0x0A};
    //verify byte by byte.
    qint32 tPrefix=(qint32)tRecvBuffer.at(0)&0xFF;
    qint32 tAddr=(qint32)tRecvBuffer.at(1)&0xFF;
    qint32 tSuffix1=(qint32)tRecvBuffer.at(tRecvBuffer.count()-2)&0xFF;
    qint32 tSuffix2=(qint32)tRecvBuffer.at(tRecvBuffer.count()-1)&0xFF;
    if(0xA5!=tPrefix || ADDR_DEST!=tAddr || 0x0D!=tSuffix1 || 0x0A!=tSuffix2)
    {
#ifdef ZDebugInfo
        qDebug()<<"error:specified byte is not right!";
#endif
        return -1;
    }
    //combine bytes.
    *status=(qint32)tRecvBuffer.at(2)<<24|(qint32)tRecvBuffer.at(3)<<16|(qint32)tRecvBuffer.at(4)<<8|(qint32)tRecvBuffer.at(5)<<0;
    return 0;
}

#include <QCoreApplication>
#include <QThread>
#include <ziomodule.h>
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);
    bool bRet;
    qint32 tInportStatus;
    ZIOModule ioModule("ttyUSB0");
    if(!ioModule.ZDoInit())
    {
        qDebug()<<"initial failed!";
        return -1;
    }
#if 1
    while(1)
    {
        ioModule.ZGetInputPortsStatus(&tInportStatus);
        QThread::sleep(1);
        qDebug("InputPort:0x%x\n",tInportStatus);
    }
#endif

#if 1
    while(1)
    {
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort1,true);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort2,true);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort3,true);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort4,true);
        QThread::sleep(5);


        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort1,false);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort2,false);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort3,false);
        QThread::sleep(1);
        bRet=ioModule.ZSetOutputPort(ZIOModule::OutputPort4,false);
        QThread::sleep(5);
    }
#endif
    //ioModule.ZCleanUp();
    return a.exec();
}