rfid::rfid(QObject *parent, QString port, int baudrate) :
QObject(parent)
{
serial = new QAsyncSerial(port, baudrate);
connect(serial, SIGNAL(lineReceived(QString)),
this, SLOT(receiveID(QString)));
sendReset();
}
/**
* @brief CommWithClient::readMessage
* 发送数据的格式:数据的长度 + 命令 + 数据(数据长度包括数据本身的长度和命令的长度)
* 数据的长度:sizeof(quint64)
* 命令的长度:sizeof(quint16)
* 命令类型:
* 发送图片:DATA_IMAGE
* 发送坐标:DATA_POINT
*/
void CommWithClient::readMessage(){
qDebug()<<"readMessage";
QDataStream stream(tcpClient);
stream.setVersion(QDataStream::Qt_4_7);
//qDebug()<<"bytesAvailable= "<<tcpClient->bytesAvailable();
//如果totalMessageSize的长度为0，表明这是一段新的数据
if(0 == totalMessageSize){
if(tcpClient->bytesAvailable()<(int)(sizeof(quint64)+sizeof(quint16)))
return;
//总长度
stream >> totalMessageSize;
quint16 cmdType;
//命令
stream>>cmdType;
qDebug()<<"cmdTyed= "<<cmdType;
//数据部分的长度要减去 sizeof(quint16)和sizeof(quint64)
totalMessageSize -= sizeof(quint16);
totalMessageSize -= sizeof(quint64);
switch(cmdType){
/*
case DATA_POINTS:
status = DATA_POINTS;
//
break;
*/
case DATA_HEAD_PICTURE:
status = DATA_HEAD_PICTURE;
receivePixmap();
break;
case DATA_RESULT:
status = DATA_RESULT;
receivePixmap();
break;
case DATA_STU_ID:
status = DATA_STU_ID;
receiveID();
break;
case DATA_STU_NAME:
status = DATA_STU_NAME;
receiveName();
break;
default:
qDebug()<<"Error cmdType: "<<cmdType;
}
}else{
//否则表示这不是一段新的数据
switch(status){
