wfview/commhandler.cpp

330 wiersze
9.1 KiB
C++

#include "commhandler.h"
#include <QDebug>
// Copytight 2017-2020 Elliott H. Liggett
commHandler::commHandler()
{
//constructor
// grab baud rate and other comm port details
// if they need to be changed later, please
// destroy this and create a new one.
port = new QSerialPort();
// TODO: The following should become arguments and/or functions
// Add signal/slot everywhere for comm port setup.
// Consider how to "re-setup" and how to save the state for next time.
baudrate = 115200;
stopbits = 1;
portName = "/dev/ttyUSB0";
setupComm(); // basic parameters
openPort();
//qDebug() << "Serial buffer size: " << port->readBufferSize();
//port->setReadBufferSize(1024); // manually. 256 never saw any return from the radio. why...
//qDebug() << "Serial buffer size: " << port->readBufferSize();
initializePt();
connect(port, SIGNAL(readyRead()), this, SLOT(receiveDataIn()));
connect(pseudoterm, SIGNAL(readyRead()), this, SLOT(receiveDataInPt()));
}
commHandler::commHandler(QString portName, quint32 baudRate)
{
//constructor
// grab baud rate and other comm port details
// if they need to be changed later, please
// destroy this and create a new one.
port = new QSerialPort();
// TODO: The following should become arguments and/or functions
// Add signal/slot everywhere for comm port setup.
// Consider how to "re-setup" and how to save the state for next time.
baudrate = baudRate;
stopbits = 1;
this->portName = portName;
setupComm(); // basic parameters
openPort();
// qDebug() << "Serial buffer size: " << port->readBufferSize();
//port->setReadBufferSize(1024); // manually. 256 never saw any return from the radio. why...
//qDebug() << "Serial buffer size: " << port->readBufferSize();
initializePt();
connect(port, SIGNAL(readyRead()), this, SLOT(receiveDataIn()));
connect(pseudoterm, SIGNAL(readyRead()), this, SLOT(receiveDataInPt())); // sometimes it seems the connection fails.
}
void commHandler::initializePt()
{
// qDebug() << "init pt";
pseudoterm = new QSerialPort();
setupPtComm();
openPtPort();
}
void commHandler::setupPtComm()
{
qDebug() << "Setting up Pseudo Term";
pseudoterm->setPortName("/dev/ptmx");
// pseudoterm->setBaudRate(baudrate);
// pseudoterm->setStopBits(QSerialPort::OneStop);
}
void commHandler::openPtPort()
{
// qDebug() << "opening pt port";
bool success;
#ifndef Q_OS_WIN
char ptname[128];
int sysResult=0;
#endif
QString ptLinkCmd = "ln -s ";
success = pseudoterm->open(QIODevice::ReadWrite);
if(success)
{
#ifndef Q_OS_WIN
qDebug() << "Opened pt device, attempting to grant pt status";
ptfd = pseudoterm->handle();
qDebug() << "ptfd: " << ptfd;
if(grantpt(ptfd))
{
qDebug() << "Failed to grantpt";
return;
}
if(unlockpt(ptfd))
{
qDebug() << "Failed to unlock pt";
return;
}
// we're good!
qDebug() << "Opened pseudoterminal.";
qDebug() << "Slave name: " << ptsname(ptfd);
ptsname_r(ptfd, ptname, 128);
ptDevSlave = QString::fromLocal8Bit(ptname);
ptLinkCmd.append(ptDevSlave);
ptLinkCmd.append(" /tmp/rig");
sysResult = system("rm /tmp/rig");
sysResult = system(ptLinkCmd.toStdString().c_str());
if(sysResult)
{
qDebug() << "Received error from pseudo-terminal symlink command: code: [" << sysResult << "]" << " command: [" << ptLinkCmd << "]";
}
#endif
} else {
ptfd = 0;
qDebug() << "Could not open pseudo-terminal.";
}
}
commHandler::~commHandler()
{
this->closePort();
}
void commHandler::setupComm()
{
serialError = false;
port->setPortName(portName);
port->setBaudRate(baudrate);
port->setStopBits(QSerialPort::OneStop);// OneStop is other option
}
void commHandler::receiveDataFromUserToRig(const QByteArray &data)
{
sendDataOut(data);
}
void commHandler::sendDataOut(const QByteArray &writeData)
{
mutex.lock();
#ifdef QT_DEBUG
qint64 bytesWritten;
bytesWritten = port->write(writeData);
qDebug() << "bytesWritten: " << bytesWritten << " length of byte array: " << writeData.length()\
<< " size of byte array: " << writeData.size()\
<< " Wrote all bytes? " << (bool) (bytesWritten == (qint64)writeData.size());
#else
port->write(writeData);
#endif
mutex.unlock();
}
void commHandler::sendDataOutPt(const QByteArray &writeData)
{
ptMutex.lock();
//printHex(writeData, false, true);
#ifdef QT_DEBUG
qint64 bytesWritten;
bytesWritten = port->write(writeData);
qDebug() << "pseudo-term bytesWritten: " << bytesWritten << " length of byte array: " << \
writeData.length() << " size of byte array: " << writeData.size()\
<< ", wrote all: " << (bool)(bytesWritten == (qint64)writeData.size());
#else
pseudoterm->write(writeData);
#endif
ptMutex.unlock();
}
void commHandler::receiveDataInPt()
{
// We received data from the pseudo-term.
//qDebug() << "Sending data from pseudo-terminal to radio";
// Send this data to the radio:
//QByteArray ptdata = pseudoterm->readAll();
// should check the data and rollback
// for now though...
//sendDataOut(ptdata);
sendDataOut(pseudoterm->readAll());
//qDebug() << "Returned from sendDataOut with pseudo-terminal send data.";
}
void commHandler::receiveDataIn()
{
// connected to comm port data signal
// Here we get a little specific to CIV radios
// because we know what constitutes a valid "frame" of data.
// new code:
port->startTransaction();
inPortData = port->readAll();
if(inPortData.startsWith("\xFE\xFE"))
{
if(inPortData.endsWith("\xFD"))
{
// good!
port->commitTransaction();
emit haveDataFromPort(inPortData);
if( (inPortData[2] == (char)0x00) || (inPortData[2] == (char)0xE0) || (inPortData[3] == (char)0xE0) )
{
// send to the pseudo port as well
// index 2 is dest, 0xE1 is wfview, 0xE0 is assumed to be the other device.
// Maybe change to "Not 0xE1"
// 0xE1 = wfview
// 0xE0 = pseudo-term host
// 0x00 = broadcast to all
//qDebug() << "Sending data from radio to pseudo-terminal";
sendDataOutPt(inPortData);
}
if(rolledBack)
{
// qDebug() << "Rolled back and was successfull. Length: " << inPortData.length();
//printHex(inPortData, false, true);
rolledBack = false;
}
} else {
// did not receive the entire thing so roll back:
// qDebug() << "Rolling back transaction. End not detected. Lenth: " << inPortData.length();
//printHex(inPortData, false, true);
port->rollbackTransaction();
rolledBack = true;
}
} else {
port->commitTransaction(); // do not emit data, do not keep data.
//qDebug() << "Warning: received data with invalid start. Dropping data.";
//qDebug() << "THIS SHOULD ONLY HAPPEN ONCE!!";
// THIS SHOULD ONLY HAPPEN ONCE!
// unrecoverable. We did not receive the start and must
// have missed it earlier because we did not roll back to
// preserve the beginning.
//printHex(inPortData, false, true);
}
}
void commHandler::openPort()
{
bool success;
// port->open();
success = port->open(QIODevice::ReadWrite);
if(success)
{
isConnected = true;
//qDebug() << "Opened port!";
return;
} else {
// debug?
qDebug() << "Could not open serial port " << portName << " , please restart.";
isConnected = false;
serialError = true;
emit haveSerialPortError(portName, "Could not open port. Please restart.");
return;
}
}
void commHandler::closePort()
{
port->close();
isConnected = false;
}
void commHandler::debugThis()
{
// Do not use, function is for debug only and subject to change.
qDebug() << "comm debug called.";
inPortData = port->readAll();
emit haveDataFromPort(inPortData);
}
void commHandler::printHex(const QByteArray &pdata, bool printVert, bool printHoriz)
{
qDebug() << "---- Begin hex dump -----:";
QString sdata("DATA: ");
QString index("INDEX: ");
QStringList strings;
for(int i=0; i < pdata.length(); i++)
{
strings << QString("[%1]: %2").arg(i,8,10,QChar('0')).arg((unsigned char)pdata[i], 2, 16, QChar('0'));
sdata.append(QString("%1 ").arg((unsigned char)pdata[i], 2, 16, QChar('0')) );
index.append(QString("%1 ").arg(i, 2, 10, QChar('0')));
}
if(printVert)
{
for(int i=0; i < strings.length(); i++)
{
//sdata = QString(strings.at(i));
qDebug() << strings.at(i);
}
}
if(printHoriz)
{
qDebug() << index;
qDebug() << sdata;
}
qDebug() << "----- End hex dump -----";
}