ezx ( A780 / E680 )网络对时程序源码(使用 SNTP 协议AT指令实现)

//本程序是基于EZX平台的对时程序，使用简单网络对时协议（sntp）。 //part1：通过SNTP获取时间。 //part2：通过向/dev/mux4发送AT指令修改系统时间。否则直接使用settimeofday（）函数会导致一重启手机 //时间回到调试以前。 //程序在A780上测试通过，程序有点乱。但是原理很简单相信大家能看懂。 //有问题欢迎联系我，mail：duff33@163.com qq:123961459 #include <sys/time.h> #include <sys/stat.h> #include <sys/types.h> #include <sys/ioctl.h> #include <fcntl.h> #include <time.h> #include <unistd.h> #include <qtextcodec.h> #include <stddef.h> #include <stdlib.h> #include <stdio.h> #include <string.h> #include <qwsevent_qws.h> #include <zapplication.h> #include <zmainwidget.h> #include <zmessagebox.h> #include <ezxutilcst.h> #include <ezxres.h> #include <qlabel.h> #include <qsocket.h> #include <qpushbutton.h> #include <qtextview.h> #include <zdatasessionmanager.h> #include <ZDateTimePicker.h> #include <ezxtapi.h> #include <QSocketNotifier.h> #include <QSocketDevice.h> static QTextCodec* gbk_codec = QTextCodec::codecForName("GBK"); static QString un_gbk(const char*ChnStr) { return gbk_codec->toUnicode(ChnStr); } static void getError(QSocketDevice * qsd) { char ErrorList[10][20]={"NoError", "AlreadyBound", "Inaccessible", "NoResources", "Bug", "Impossible","NoFiles", "ConnectionRefused", "NetworkFailure", "UnknownError"} fprintf(stderr,"socket status:%s\n",ErrorList[qsd->error()]); } static void makeATTime(struct tm * time_s,char * timestr,int maxsize) { strftime(timestr,maxsize,"at+cclk=\"%y/%m/%d,%X+00\"",time_s); } unsigned long net_readLong(char *l) { unsigned long t_1,t_2,t_3,t_4; t_1=*l<0?*l+256:*l; t_2=*(l+1)<0?*(l+1)+256:*(l+1); t_3=*(l+2)<0?*(l+2)+256:*(l+2); t_4=*(l+3)<0?*(l+3)+256:*(l+3); return t_4+(t_3<<8)+(t_2<<16)+(t_1<<24); } static void WriteDate(char* date) { fd_set writeble; struct timeval tv; tv.tv_sec=5; tv.tv_usec=0; FD_ZERO(&writeble);//描述集合（writeble）初始化为空。 int mux4; mux4=open("/dev/mux4",O_RDWR|O_NONBLOCK|O_NOCTTY); FD_SET(mux4,&writeble);//将mux4描述器添加进集合。 if(mux4==-1) { fprintf(stderr,"can't open /dev/mux4"); } if(select(mux4+1,NULL,&writeble,NULL,&tv)>0)//判断mux4是否可写。。范围要是最大描述器加1 { fprintf(stderr,"the file writeable\n"); write(mux4,date,strlen(date)); close(mux4); } } class MyWidget:public ZMainWidget { Q_OBJECT public: ZDataSessionManager * z; QLabel * q; QPushButton * qpb; QSocketDevice * qsd; QSocketNotifier * sn; MyWidget(QWidget * parent); void DateOperation(); public slots: void vistNet(int,ZLinkInfo&); void receive(); void slotConnected(); }; MyWidget::MyWidget(QWidget * parent):ZMainWidget("Tile Bar", true, parent, NULL, 0) { showFullScreen(); q=new QLabel("t",this,NULL); setContentWidget(q); setCSTWidget(NULL); qpb=new QPushButton(this,"ttt"); qpb->setText(un_gbk("退出")); qpb->resize(120,40); qpb->move(0,280); connect(qpb,SIGNAL(clicked()),qApp,SLOT(quit())); qpb->show(); q->show(); showMaximized(); z=new ZDataSessionManager(this); z->init(); connect(z,SIGNAL(connected(int,ZLinkInfo&)),SLOT(vistNet(int,ZLinkInfo&))); QString s; getProfileNamebySelect(s);//注意接入点要选择CMNET，CMWAP无法使用SNTP协议。 z->openLink(s); } void MyWidget::vistNet(int linkid,ZLinkInfo&) { QHostAddress qh,ds; int lkid=linkid; qsd=new QSocketDevice(QSocketDevice::Datagram); z->bindSocket2Link(lkid,qsd->socket()); ds.setAddress("221.7.129.79"); char * header=new char[48]; memset(header,0,48); header[0]=0x1b; sn=new QSocketNotifier (qsd->socket(),QSocketNotifier::Read, 0, 0 ); connect( sn, SIGNAL(activated(int)),SLOT(receive())); fprintf(stderr,"%d", qsd->writeBlock(header,48,ds,123)); getError(qsd); } void MyWidget::slotConnected() { } void MyWidget::receive() { int ByteCount,ReadCount; char *IncommingChar; fprintf(stderr,"Load a piece of Message! %d \n",sizeof(time_t)); ByteCount=qsd->bytesAvailable(); fprintf(stderr,"%d\n",ByteCount); IncommingChar=new char[ByteCount]; ReadCount=qsd->readBlock(IncommingChar,ByteCount); unsigned long time=net_readLong(&IncommingChar[40])-2208988800; time_t * timestamp=(time_t *)(&time); struct tm * time_s=gmtime(timestamp); char* timestr=new char[128]; makeATTime(time_s,timestr,128); WriteDate(timestr); struct timeval tv; tv.tv_sec=time; tv.tv_usec=0; settimeofday(&tv,NULL); stime(timestamp); q->setText(QString(timestr)); delete timestr; } void MyWidget::DateOperation() { } int main(int argc, char** argv) { ZApplication app (argc, argv); MyWidget *wp = new MyWidget(NULL); app.setMainWidget(wp); wp->show(); return app.exec(); } #include"helloworld.moc"