Help needed on using readyRead signal !!

srikanth.koorma

Hello friends, I am working on a project which involves using QTcpSocket and QSerialPort. So here I wanted to implement functions for both serial port and socket when data is available. I used readyRead signal for both socket and serialport seperately.

It is like below,
@
connect(&serialPort,SIGNAL(QSerialPort::readyRead()),this,SLOT(serialReceived()));
connect(&socket, SIGNAL(QTcpSocket::readyRead()), this, SLOT(readyRead()), Qt::DirectConnection);

void rescueOp::serialReceived()
{
// get the information
QByteArray data = serialPort.readAll();

// will write on console
qDebug() << " Data in Serial Port: " << data;

}

void rescueOp::readyRead()
{
// get the information
QByteArray Data = socket.readAll();

// will write on console
qDebug() << " Data in Socket: " << Data;

}
@

Output is getting some error like
@
Connected to server
QObject::connect: No such signal QTcpSocket::QTcpSocket::readyRead() in ../rescue_original/rescueop.cpp:61
QObject::connect: (receiver name: 'rescueOp')
Serial Port Opened
@

So the question is how can I use this readyRead signal for both of them without a clash.

p3c0

Hi,

Instead of
@
SIGNAL(QTcpSocket::readyRead())
@

use
@
SIGNAL(readyRead())
@

srikanth.koorma

Hello Splicer, I've tried that previously which doesn't work for two objects i.e. Serialport and Socket which is shown in below code. Is there any another way possible.??
@
connect(&serialPort,SIGNAL(readyRead()),this,SLOT(serialReceived()));
connect(&socket, SIGNAL(readyRead()), this, SLOT(socketReceived()), Qt::DirectConnection);
@

p3c0

What do you mean by it is not working ?
Doesn't the above code compile ?

srikanth.koorma

No no, I mean to say that serialport and socket conflicts each other with the same readyRead signal.
When a new data is arrived through socket/serialport readyRead signal is emitted. I cant understand what if going with that function, when serialport is not used and socket is used readyRead signal works as required and vice-versa. But if combinely used it wont get any output.

p3c0

Thats strange. Those 2 are two different objects which are connected to different slots. Also you have a slot same as a signal
@
void rescueOp::readyRead()
@

change it to something else. For eg. onReadyRead()

srikanth.koorma

These are the new lines, now socket works and serialport doesn't get any input. :(
@
connect(&socket, SIGNAL(readyRead()), this, SLOT(socketReceived()), Qt::DirectConnection);
connect(&serialPort,SIGNAL(QSerialPort::readyRead()),this,SLOT(serialReceived()));
@

p3c0

Use
@
SIGNAL(readyRead())
@

for serialport also.