Qt Serial- Open function returns false
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Hey guys. I am new in Qt and trying to communicate with my STM board via Serial Port. But I can't open the serial port with serialPort->open(QIODevice::ReadWrite). I couldn't find where I am doing wrong. I need help.
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What a stupid I am. The name of port I am trying to use is COM6 but i gave name randomly STMcomm in code. The name should be same. Thank you for your support sir.
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Hi and welcome to devnet,
You might want to print the error returned by the error property.
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Thanks for answer but how should I call that specific error function?
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Did you try to just send its value to
qDebug() <<? -
It says no error but then why the if statement happens to be 1?
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problem evolved to that now. The error string is ="System couldn't find the referred file"
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Good, one more thing: there's no reason for your
serialPortvariable to be statically declared. You should fix that. -
I know I am asking too much but I don't know what is statically declared means. I looked a bit and as I understand that means initializing without new.
I moved *QSerialPort serialPort; part to header file if you meant that. But it didn't help. I can't understand why it should be so hard to just use simple serial port.
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What a stupid I am. The name of port I am trying to use is COM6 but i gave name randomly STMcomm in code. The name should be same. Thank you for your support sir.
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Your use of static falls in the last paragraphe of this article.
