CODEWITHSUNDEEP
c++qtserial-port
Basti An
Basti An

Reputation: 387

QT Serial send a Byte

Is there a way to send a byte to serial with QT. I only found a function for sending chars.

serialport->write(const QByteArray &data)

I want to send a array with these three bytes in Hex: 0xF0 0x02 0x0D

Upvotes: 1

Views: 4963

Answers (2)

Vladimir Bershov
Vladimir Bershov

Reputation: 2832

You send 8-bit values. "Hexadecimal" is just a form of notation of integer values.

QByteArray ba;
ba.resize(3);
ba[0] = 0xF0;
ba[1] = 0x02;
ba[2] = 0x0D;
serialport->write(ba);

or:

char arr[3] = {0xF0, 0x02, 0x0D};
QByteArray ba(arr, 3);
serialport->write(ba);

Upvotes: 1

SGaist
SGaist

Reputation: 928

Do you have something like

 serialport->write(QByteArray::fromHex("F0020D"));

in mind ?

Upvotes: 2

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