代码摘录

 const unsigned char s[8]={0x80,0x80,0x43,0x00,0x00,0x00,0x43,0x00};      serial.write((char*)s,8);   unsigned char d[8];            d[0] = 0x80;            d[0] = 128;            d[1] = 0x80;            d[2] = 0x52;            d[3] = 0x00;            d[4] = 0x00;            d[5] = 0x00;            d[6] = 0x52;            d[7] = 0x00;            QByteArray  sen;            sen.append(0x80);            sen.append(0x80);            // sen.append(0x52);            int i= 0x0;            sen.append(qToBigEndian(82));            sen.append(i);            sen.append(i);            sen.append(i);            //  sen.append(0x52);            sen.append(qToLittleEndian(82));            sen.append(i);            // qToBigEndian(1000);            m_reader.write(sen,8);                QString key;    key =  QString("%1").arg(10000,4,16,QLatin1Char('0'));    qDebug()<<key[2]<<key[3] << key[0]<< key[1];    qDebug()<<key;