QT之大小端解析

1、小端模式的解析

QString str1 = "FEFE275FA70101DBB1010101010101010101010101010301010101010101010101010101011A";
QByteArray ba = QByteArray::fromHex(str1.toLatin1());
ushort hightCurrent = 0;　　// 类型可根据实际情况改变
memcpy(&hightCurrent, ba.data() + 3, sizeof(ushort));

2、大端的解析

QString str = "20030C416CB440D0B9";
QByteArray ba1 = QByteArray::fromHex(str.toLatin1());
//浮点型
float asd = 0;
QByteArray big;
big.resize(4);
big[0] = ba1[6];big[1] = ba1[5];big[2] = ba1[4];big[3] = ba1[3];
memcpy(&asd, big.data(),sizeof(float));
//短整型
ushort my = (ushort)(ba1[3] << 8) + (uchar)ba1[4];