Redpitaya Forum

Posted: **Tue Mar 24, 2015 3:07 pm**

Hi,

I want to use the run.sh 'IP' command from a GUI.
I work with Qt and made a button, which will start a subprocess:

void MainWindow::CompileAndTransfer()
{
    QProcess *compAndtrans;
    compAndtrans = new QProcess(this);
    compAndtrans->setWorkingDirectory("/home/username/RedPitaya/SDK/");
    compAndtrans->start("./run.sh 'IP'");
    compAndtrans->waitForFinished();
    QString strOut = compAndtrans->readAllStandardOutput();
    qDebug() << strOut;
}

Output is:

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"make: Entering directory `/home/molsyst/RedPitaya/SDK/src'
rm -f api_test *.o ~* 
make: Leaving directory `/home/molsyst/RedPitaya/SDK/src'
make: Entering directory `/home/molsyst/RedPitaya/SDK/src'
arm-linux-gnueabi-gcc -c -g -std=gnu99 -Wall -Werror -I ../include/ trig-aqui.c -o trig-aqui.o
make: Leaving directory `/home/molsyst/RedPitaya/SDK/src'
"

But neither "trig-aqui.o" nor "api_test" is in the dir, as it is usually after running the run.sh script from the shell.

Does anybody have an idea?

Tanks in advance
Graf Zahl

Posted: **Tue Mar 24, 2015 9:23 pm**

Hi,

My first guess would be that the compilation failed, eg. because the arm-linux-gnueabi-gcc compiler is not on any path that the Qt environment knows about.
I am not familiar with Qt specifics, but it looks like you capture only the standard output. To see error messages in the output, add "2>&1" to the command.

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compAndtrans->start("./run.sh 'IP' 2>&1");

Maybe things become clearer then.

Posted: **Wed Mar 25, 2015 2:42 pm**

You are right:

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QProcess *compile1;
compile1 = new QProcess(this);
compile1->start(arm-linux-gnueabi-gcc);
qDebug() << compile1->errorString();

Code: Select all

"No such file or directory"

But why does Qt not know a program, which the terminal knows?

Posted: **Thu Mar 26, 2015 10:09 am**

I had to use the full path of all programs, in this case:
Makefile:
CROSS_COMPILE = ../gcc_linaro/bin/arm-linux-gnueabi-

Now it works fine

Redpitaya Forum

Using run.sh from another program (Qt)

Using run.sh from another program (Qt)

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