Convert hexbyte to ASCII

[Damian7546]

Hi,

Is there any simple way in qt to change 1byte: 0x44 to 2bytes "44" ? I try like below but something is wrong:

QString MyClass::hexByte2ASCII(quint8 data)
{
    quint8 data_hi = (data  >> 4);
    quint8 data_lo = ((data & 0x0f));

    QString value;
    value[0] = data_hi <= '9' ? data_hi + '0' : data_hi + '7';
    value[1] = data_lo <= '9' ? data_lo + '0' : data_lo + '7';
    return value;
}

[Christian Ehrlicher]

@Damian7546 said in Convert hexbyte to ASCII:

I try like below but something is wrong:

Then fix it. You're accessing the 'value' QString at an invalid index since the QString is empty. Use QString operator +=(char)

[Damian7546]

@Christian-Ehrlicher thanks for response.
I found simpler way to achieve my functionality:
QString value = (QString::number(data, 16)).toUpper();