qcppdialogimpl.cpp

在linux下,应用QT开发平台,开发的串口通信程序,能接收,发送和存储数据,对于串口通信开发很有借签意义

   m_cmdLe->setEnabled(true);
   m_sendPb->setEnabled(true);
   m_protoPb->setEnabled(true);
   m_closePb->setEnabled(true);

   m_cmdLe->setFocus();
}

void QCPPDialogImpl::enableSettingWidgets(bool enable)
{
   m_baudCb->setEnabled(enable);
   m_dataBitsCb->setEnabled(enable);
   m_parityCb->setEnabled(enable);
   m_stopCb->setEnabled(enable);
   m_softwareCb->setEnabled(enable);
   m_hardwareCb->setEnabled(enable);
}

void QCPPDialogImpl::disconnectTTY()
{
   disconnectTTYRestore(m_applyCb->isChecked());
}

void QCPPDialogImpl::disconnectTTYRestore(bool restoreSettings)
{
   m_outputTimer.stop();
   m_outputBuffer="";

//   cerr<<"closing "<<m_fd<<endl;
   if (m_fd!=-1)
   {
      if (restoreSettings)
         tcsetattr(m_fd, TCSANOW, &m_oldtio);
      ::close(m_fd);
   }
   m_fd=-1;
   m_connectPb->setEnabled(true);
   m_deviceCb->setEnabled(true);

   if (m_applyCb->isChecked())
      enableSettingWidgets(true);

   m_applyCb->setEnabled(true);
   m_readCb->setEnabled(true);
   m_writeCb->setEnabled(true);

//   m_outputView->setEnabled(false);
   m_oldCmdsLb->setEnabled(false);
   m_cmdLe->setEnabled(false);
   m_sendPb->setEnabled(false);
   m_protoPb->setEnabled(false);
   m_closePb->setEnabled(false);

   m_connectPb->setFocus();

   m_isConnected=false;
   delete m_notifier;
   m_notifier=0;
}



/** This function features some code from minicom 2.0.0, src/sysdep1.c */
void QCPPDialogImpl::setNewOptions(int baudrate, int databits, const QString& parity, const QString& stop, bool softwareHandshake, bool hardwareHandshake)
{
   struct termios newtio;
//   memset(&newtio, 0, sizeof(newtio));
   if (tcgetattr(m_fd, &newtio)!=0)
   cerr<<"tcgetattr() 3 failed"<<endl;

   /*{
      unsigned int i;
      char *c =(char*)&newtio;
      fprintf(stderr,"*****************\n");
      for (i=0; i<sizeof(newtio); i++)
      {
         unsigned int t=*c;
         if (i%8 == 0)
            fprintf(stderr,"\n");
         fprintf(stderr, " 0x%02x", t&0xff);
         c++;
      }
   }*/


   speed_t _baud=0;
   switch (baudrate)
   {
   case 600:
      _baud=B600;
      break;
   case 1200:
      _baud=B1200;
      break;
   case 2400:
      _baud=B2400;
      break;
   case 4800:
      _baud=B4800;
      break;
   case 9600:
      _baud=B9600;
      break;
//   case 14400:
//      _baud=B14400;
//      break;
   case 19200:
      _baud=B19200;
      break;
//   case 28800:
//      _baud=B28800;
//      break;
   case 38400:
      _baud=B38400;
      break;
//   case 56000:
//      _baud=B56000;
//      break;
   case 57600:
      _baud=B57600;
      break;
   case 115200:
      _baud=B115200;
      break;
   case 230400:
      _baud=B230400;
      break;
   case 460800:
      _baud=B460800;
      break;
   case 576000:
      _baud=B576000;
      break;
   case 921600:
      _baud=B921600;
      break;
//   case 128000:
//      _baud=B128000;
//      break;
   default:
//   case 256000:
//      _baud=B256000;
      break;
   }
   cfsetospeed(&newtio, (speed_t)_baud);
   cfsetispeed(&newtio, (speed_t)_baud);

   /* We generate mark and space parity ourself. */
   if (databits == 7 && (parity=="Mark" || parity == "Space"))
      databits = 8;
   switch (databits)
   {
   case 5:
      newtio.c_cflag = (newtio.c_cflag & ~CSIZE) | CS5;
      break;
   case 6:
      newtio.c_cflag = (newtio.c_cflag & ~CSIZE) | CS6;
      break;
   case 7:
      newtio.c_cflag = (newtio.c_cflag & ~CSIZE) | CS7;
      break;
   case 8:
   default:
      newtio.c_cflag = (newtio.c_cflag & ~CSIZE) | CS8;
      break;
   }
   newtio.c_cflag |= CLOCAL | CREAD;

   //parity
   newtio.c_cflag &= ~(PARENB | PARODD);
   if (parity == "Even")
      newtio.c_cflag |= PARENB;
   else if (parity== "Odd")
      newtio.c_cflag |= (PARENB | PARODD);

   //hardware handshake
/*   if (hardwareHandshake)
      newtio.c_cflag |= CRTSCTS;
   else
      newtio.c_cflag &= ~CRTSCTS;*/
   newtio.c_cflag &= ~CRTSCTS;

   //stopbits
   if (stop=="2")
      newtio.c_cflag |= CSTOPB;
   else
      newtio.c_cflag &= ~CSTOPB;

//   newtio.c_iflag=IGNPAR | IGNBRK;
    newtio.c_iflag=IGNBRK;
//   newtio.c_iflag=IGNPAR;

   //software handshake
   if (softwareHandshake)
      newtio.c_iflag |= IXON | IXOFF;
   else
      newtio.c_iflag &= ~(IXON|IXOFF|IXANY);

   newtio.c_lflag=0;

   newtio.c_oflag=0;


   newtio.c_cc[VTIME]=1;
   newtio.c_cc[VMIN]=60;

//   tcflush(m_fd, TCIFLUSH);
   if (tcsetattr(m_fd, TCSANOW, &newtio)!=0)
      cerr<<"tcsetattr() 1 failed"<<endl;

   int mcs=0;
//   ioctl(m_fd, TIOCMODG, &mcs);
   ioctl(m_fd, TIOCMGET, &mcs);
   mcs |= TIOCM_RTS;
   ioctl(m_fd, TIOCMSET, &mcs);

   if (tcgetattr(m_fd, &newtio)!=0)
      cerr<<"tcgetattr() 4 failed"<<endl;
   //hardware handshake
   if (hardwareHandshake)
      newtio.c_cflag |= CRTSCTS;
   else
      newtio.c_cflag &= ~CRTSCTS;
/*  if (on)
     newtio.c_cflag |= CRTSCTS;
  else
     newtio.c_cflag &= ~CRTSCTS;*/
   if (tcsetattr(m_fd, TCSANOW, &newtio)!=0)
      cerr<<"tcsetattr() 2 failed"<<endl;

   /*{
      unsigned int i;
      char *c =(char*)&newtio;
      fprintf(stderr,"-----------------\n");
      tcgetattr(m_fd, &newtio);
      for (i=0; i<sizeof(newtio); i++)
      {
         unsigned int t=*c;
         if (i%8 == 0)
            fprintf(stderr,"\n");
         fprintf(stderr, " 0x%02x", t&0xff);
         c++;
      }
   }*/
}

void QCPPDialogImpl::readData(int fd)
{
   if (fd!=m_fd)
      return;
   int bytesRead=::read(m_fd, m_buf, CUTECOMM_BUFSIZE);

   if (bytesRead<0)
   {
      cerr<<"read result: "<<bytesRead<<endl;
      perror("read: \n");
      return;
   }

   const char* c=m_buf;
   if (m_sz!=0)
   {
//      cerr<<"readData() "<<bytesRead<<endl;
      QByteArray ba;
      ba.duplicate(m_buf, bytesRead);
//      ba.setRawData(m_buf, bytesRead);
      m_sz->writeToStdin(ba);
//      ba.resetRawData(m_buf, bytesRead);
      return;
   }

   QString text;
   char buf[16];
   for (int i=0; i<bytesRead; i++)
   {
      if (m_hexOutputCb->isChecked())
      {
         if ((m_hexBytes % 16) == 0)
         {
            snprintf(buf, 16, "%08x: ", m_hexBytes);
            text+=buf;
         }
         unsigned int b=*c;
         snprintf(buf, 16, "%02x ", b & 0xff);
         text+=buf;

         m_hexBytes++;
         if ((m_hexBytes % 16)==0)
            text+="\n";
         else if ((m_hexBytes % 8)==0)
            text+="  ";
      }
      else
      {
         if ((isprint(*c)) || (*c=='\n') || (*c=='\r'))
         {
            if (*c!='\r')
               text+=(*c);
         }
         else
         {
            unsigned int b=*c;
            snprintf(buf, 16, "\\0x%02x", b & 0xff);
            text+=buf;
         }
      }
      c++;
   }

   addOutput(text);
/*   if (m_outputView->paragraphs()>1100)
   {
      m_outputView->setUpdatesEnabled(false);
      m_outputView->setSelection(0, 0, 100, 0);
      m_outputView->removeSelectedText();
      m_outputView->scrollToBottom();
      m_outputView->setCursorPosition(m_outputView->paragraphs()-1, m_outputView->paragraphLength(m_outputView->paragraphs()-1));
      m_outputView->insert(text);
      m_outputView->setUpdatesEnabled(true);
   }
   else
   {
      m_outputView->setCursorPosition(m_outputView->paragraphs()-1, m_outputView->paragraphLength(m_outputView->paragraphs()-1));
      m_outputView->insert(text);
   }*/
}

void QCPPDialogImpl::addOutput(const QString& text)
{
   m_outputBuffer+=text;

   if (!m_outputTimer.isActive())
   {
      doOutput();
      m_outputTimerStart.restart();
      m_outputTimer.start(50, true);
   }
   else
   {
      if ((m_outputTimerStart.elapsed()>400)
         || ((m_outputTimerStart.elapsed()>200) && (m_outputBuffer.length()<100)))
      {
         doOutput();
         m_outputTimerStart.restart();
      }
      m_outputTimer.start(50, true);
   }
}

void QCPPDialogImpl::doOutput()
{
   if (m_outputBuffer.isEmpty())
      return;
//   cerr<<"*";
   int pNumber=m_outputView->paragraphs();
   if (pNumber>1100)
   {
      m_outputView->setUpdatesEnabled(false);
      m_outputView->setSelection(0, 0, pNumber-1000, 0);
      m_outputView->removeSelectedText();
      m_outputView->scrollToBottom();
      m_outputView->setCursorPosition(m_outputView->paragraphs()-1, m_outputView->paragraphLength(m_outputView->paragraphs()-1));
      m_outputView->insert(m_outputBuffer);
      m_outputView->setUpdatesEnabled(true);
   }
   else
   {
      m_outputView->setCursorPosition(m_outputView->paragraphs()-1, m_outputView->paragraphLength(m_outputView->paragraphs()-1));
      m_outputView->insert(m_outputBuffer);
   }
   m_outputBuffer="";
}

void QCPPDialogImpl::hexOutputClicked(bool on)
{
   addOutput("\n");
   m_hexBytes=0;
}