prasad_N
24th April 2016, 11:23
Hi, I am trying to send 1/0 to my ARDUINO Board & trying to receive some data from board as a response , I am using QextSerialPort for this But I am not able to write any data to the board & not able to receive any data also.
http://docs.qextserialport.googlecode.com/git/1.2/qextserialport.html
qDebug() << "send.size() : " << send.size() << " data = " << send.data() <<" Written = " << port->write(send, send.size());
This printing : send.size() : 1 data = 1 Written = 0 //Means I am writing 0 bytes every time
Is there a problem in my code ??
void MainWindow::ledOnOff(bool on)
{
if(port == 0)
{
port = new QextSerialPort("COM6", QextSerialPort::EventDriven); //QextSerialPort* port is class member
port->setBaudRate(BAUD9600);
port->setFlowControl(FLOW_OFF);
port->setParity(PAR_NONE);
port->setDataBits(DATA_8);
port->setStopBits(STOP_2);
connect(port, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
if(port->open(QIODevice::ReadWrite) == true)
{
qDebug() << "Port open success";
}
else
{
qDebug() << "Port open success";
}
}
else
{
port->close();
}
quint8 writeByte = 0;
if(on)
{
writeByte = 1;
}
if(port->isOpen() || port->open(QIODevice::ReadWrite) == true)
{
QByteArray send;
send.resize(writeByte );
send = QByteArray::number(writeByte);
port->flush();
qDebug() << "send.size() : " << send.size() << " data = " << send.data()
<<" Writtend = " << port->write(send, send.size());
}
else
{
qDebug() << "device failed to open:" << port->errorString();
}
}
void MainWindow::onReadyRead()
{
QByteArray bytes;
quint8 a = port->bytesAvailable();
bytes.resize(a);
port->read(bytes.data(), bytes.size());
qDebug() << bytes.constData();
}
Thanks In Advance.
http://docs.qextserialport.googlecode.com/git/1.2/qextserialport.html
qDebug() << "send.size() : " << send.size() << " data = " << send.data() <<" Written = " << port->write(send, send.size());
This printing : send.size() : 1 data = 1 Written = 0 //Means I am writing 0 bytes every time
Is there a problem in my code ??
void MainWindow::ledOnOff(bool on)
{
if(port == 0)
{
port = new QextSerialPort("COM6", QextSerialPort::EventDriven); //QextSerialPort* port is class member
port->setBaudRate(BAUD9600);
port->setFlowControl(FLOW_OFF);
port->setParity(PAR_NONE);
port->setDataBits(DATA_8);
port->setStopBits(STOP_2);
connect(port, SIGNAL(readyRead()), this, SLOT(onReadyRead()));
if(port->open(QIODevice::ReadWrite) == true)
{
qDebug() << "Port open success";
}
else
{
qDebug() << "Port open success";
}
}
else
{
port->close();
}
quint8 writeByte = 0;
if(on)
{
writeByte = 1;
}
if(port->isOpen() || port->open(QIODevice::ReadWrite) == true)
{
QByteArray send;
send.resize(writeByte );
send = QByteArray::number(writeByte);
port->flush();
qDebug() << "send.size() : " << send.size() << " data = " << send.data()
<<" Writtend = " << port->write(send, send.size());
}
else
{
qDebug() << "device failed to open:" << port->errorString();
}
}
void MainWindow::onReadyRead()
{
QByteArray bytes;
quint8 a = port->bytesAvailable();
bytes.resize(a);
port->read(bytes.data(), bytes.size());
qDebug() << bytes.constData();
}
Thanks In Advance.