QByteArray sum element and Converting into integer
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Hi, I'm new beginner in Qt. I'm using QbyteArray to read int 2 byte data from Serialport. I need to sum element
such as Serialport sent { 0xff, 0x0f } and QbyteArray data received { data[0] = 0xff , data[1] = 0x0f }
I need to data[1] brfore data[0] ( 0000 1111 , 1111 1111) --> to sum --> (0000 1111 + 1111 1111) = ( 0000 1111 1111 1111)
and converting to integer.coding
QByteArray data = serial.readAll();
int num = data[0].prepend(data[1]);
ui->lcdnumber->display(num);
but it's doesn't work. Thanks
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Hi,
generally speaking, you need to take a look at bitwise operations in C++. Your problem boils down to:quint8 a = 0xff; quint8 b = 0x0f; quint16 result = (quint16)b<<8 | (quint16)a;
Hope this helps!
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It's work. Thank you so much