[solved] error in reading values from uart

[shajeen]

I got a hardware which send data about 300 single data per second. I developed GUI application on Qt , use Qextserialport. problem is when i read data from serial port it display in AScii value. i tried to conver to Hex, but the value are wrong. I need Value in Binary , for further process....
@
this->rs232_ = new QextSerialPort();
this->rs232_->setPortName("/dev/ttyS0");
this->rs232_->setBaudRate(BAUD4800);
this->rs232_->setFlowControl(FLOW_OFF);
this->rs232_->setParity(PAR_ODD);
this->rs232_->setDataBits(DATA_8);
this->rs232_->setStopBits(STOP_1);
this->rs232_->open(QIODevice::ReadWrite);

if (!this->rs232_->isOpen()) {
    qDebug()<<"....Port ttyS0 CanNot Open...."<<endl;
      this->rs232_->flush();
      this->rs232_->close();
           }
connect(rs232_, SIGNAL(readyRead()), this, SLOT(onDataAvailable()));

void MainWindow::onDataAvailable()
{
QByteArray data = rs232_->readAll();
qDebug()<<data<<data.toHex();
QByteArray process = data.toHex();
}@

output I Got:
@
"�""�"" "06"
""�" "dc"
"�" "ec"
"�" "ff"
"�" "80"
"�"" "06"
""�" "dc"
"t���"�" "f9"
"�" "80"
"�"" "06"
""�" "dc"
"l" "6c"
"�" "f3"
"�" "80"
"�"" "06"
""�" "dc"
"$" "24"
"�" "f1"
@

[qxoz]

Hi shajeen.
Welcome to DevNet.
Do you want display incoming data as binary, like:
06 - > "00000110"
or you mean some thing else?

[shajeen]

yes i need in binary --- "00000110"

Thank you qxoz for replay

[qxoz]

Ok if you want string display of binary data use
@QString::number(value, 2);@
look at "doc":https://qt-project.org/doc/qt-4.8/qstring.html#number

[shajeen]

i Tried to display ,but values become zero

@QString data = rs232_->read(rs232_->bytesAvailable());

QString str = data;
bool ok;
int binary = str.toInt(&ok, 2);
int dec = str.toInt(&ok, 10);
qDebug()<<binary<<dec;@

Output:
0 3
0 0
0 0
0 0
0 0
0 0
0 0
0 9
0 0
0 0
0 0
0 0
0 0

[qxoz]

i don't know what are you trying to do, but if i understand you, here the solution:
@void MainWindow::onDataAvailable()
{
QByteArray data = rs232_->readAll();
foreach (char tch, data) {
qDebug()<<QString::number((quint8)tch, 10)<< QString::number((quint8)tch, 2);
}
}@

[shajeen]

Thx qxoz it convert's......

[qxoz]

You 're welcome.
By the way if you want display all 8 bits
@QString tempZero;
QString tStr;
foreach (char tch, tArray) {
tempZero = "00000000";
tStr = QString::number((quint8)tch, 2);
tempZero.replace(8-tStr.length(), tStr.length(), tStr);
qDebug()<< tempZero;
}@

[yravi]

Hi qxoz

I need your help..currently working on a embedded board(friendlyarm mini2440), with Xbee pro module.. using qext i am able to transmit the correct data to hyperterminal..

But from when i send from hyperterminal the data received at the board end is different..for example if press "9" then on receiving side its is showing as "y" ..same for all..may i know the solution for it..

my aim is to read entire data from xbee(zigbee module) and show on lcd..please help me..