i need buffer for serial communication

KARMA

I get a total of 10 bytes of data starting with 0xAA.
data sometimes comes in 2 parts.
for instance;
xAA,x00,x10,x00 -> 4byte
x40,x00,x10,x00,x10,x00 -> 6byte

When the data comes in 2 parts like this, I could not find a solution with buffer how to combine it.
I don't know how to think as I've never used a buffer before

jsulm

@KARMA said in i need buffer for serial communication:

I could not find a solution with buffer how to combine it

Simply use a QByteArray member variable in your class and append incoming data to it until you got everything.

mrjj

Hi

I don't know how to think as I've never used a buffer before

In your Mainwindow / where serialport lives, add in the .h / class

QByteArray data; // the buffer

then in the read slot

void MainWindow::readData()
{     
     data.append(m_serial->readAll( ) );
     if (data.size() == 10 ) {
      // do processing   
      data.clear();   
     }
}