http://blog.sina.com.cn/s/blog_7da13b510100xtgr.html

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前幾天發現手里還閑著一塊GPS 佳明的15W??也不知道是好的還是壞的呵呵一時興起我就趁周六日沒什么事情

用qt做了一個界面 現在已經調試完畢 可以再2440的arm板子上正確運行? 環境fedora9+qt4.5.3+arm-linux-gcc4.3.3

界面如下

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?????????????????????????????????????????? 定位正常
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??????????????????????????????????????????????? 未定位

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主要代碼實現如下：

GPS.h文件

#ifndef KTEST01_H #define KTEST01_H #include <QWidget> #include "ui_Gps.h" #include<QDebug> #include <stdio.h> #include <unistd.h> #include <stdlib.h> #include <sys/types.h> #include <sys/stat.h> #include <sys/ioctl.h> #include <fcntl.h> #include <linux/fs.h> #include <errno.h> #include <string.h> #include <termios.h> #include <pthread.h> class Gps: public QWidget, private Ui::Form { Q_OBJECT public: Gps(QWidget* parent = 0, Qt::WFlags fl = 0 ); ~Gps(); int i; int j; bool openflag; int file_fd; int GpsYes; public slots: protected: protected slots: void paintEvent(QPaintEvent *event); void updategps(void); void updatepaint(void ); }; class GPRMC { public: char UTCtime[7]; char effect[2]; char weidu[10]; char NorS[21]; char jingdu[11]; char EorW[2]; char speed[6]; char direct[6]; char UTCcal[7]; char cipianjiao[6]; char pjfx[2]; char mod[2]; }; #endif

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*******************************GPS.cpp文件***********************************************

#include "Gps.h" #include <QtGui/QPainter> Gps::Gps(QWidget* parent, Qt::WFlags fl) : QWidget( parent, fl ), Ui::Form() { i=50; j=0; setupUi(this); GpsYes=0; gpslabel->setText(QApplication::translate("Form", "\346\234\252\345\256\232\344\275\215", 0, QApplication::UnicodeUTF8)); qDebug()<<QObject::tr("open button pressed"); file_fd=open("/dev/ttySAC1",O_RDWR|O_NONBLOCK|O_NOCTTY); //打開串口1 if(file_fd>=0) { openflag=1; qDebug()<<QObject::tr("open succeed"); struct termios Srpt; tcgetattr(file_fd,&Srpt); cfsetispeed(&Srpt,B4800); cfsetospeed(&Srpt,B4800); Srpt.c_cflag &= ~PARENB; Srpt.c_cflag &= ~CSTOPB; Srpt.c_cflag |= CS8; Srpt.c_lflag &= ~(ICANON |ISIG); tcsetattr(file_fd,TCSANOW,&Srpt); } else { openflag=0; qDebug()<<QObject::tr("open failed"); } this->setAttribute(Qt::WA_PaintOutsidePaintEvent); } void Gps::paintEvent(QPaintEvent *event) { QPainter painter(this); i=(i+9)%360; QConicalGradient gradient(260, 51,i); gradient.setSpread(QGradient::ReflectSpread); if(GpsYes) { gradient.setColorAt(0.0, Qt::white); gradient.setColorAt(0.1, Qt::darkGray); gradient.setColorAt(0.2, Qt::gray); gradient.setColorAt(0.3, Qt::lightGray); gradient.setColorAt(0.4, Qt::red); gradient.setColorAt(0.5, Qt::green); gradient.setColorAt(0.6, Qt::blue); gradient.setColorAt(0.7, Qt::yellow); gradient.setColorAt(0.8, Qt::magenta); gradient.setColorAt(0.9, Qt::yellow); gradient.setColorAt(1, Qt::green); } else { gradient.setColorAt(0.0, Qt::white); gradient.setColorAt(1, Qt::black); } painter.setRenderHint(QPainter::Antialiasing, true); painter.setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::MiterJoin)); painter.setBrush(gradient); painter.drawEllipse(210, 1, 100, 100); QPainter painter1(this); painter1.setRenderHint(QPainter::Antialiasing, true); painter1.setPen(QPen(Qt::black, 1, Qt::SolidLine, Qt::RoundCap, Qt::MiterJoin)); if(GpsYes) { painter1.setBrush(QBrush(Qt::red, Qt::SolidPattern)); gpslabel->setText(QApplication::translate("Form", "\345\256\232\344\275\215\344\270\255", 0, QApplication::UnicodeUTF8)); } else { painter1.setBrush(QBrush(Qt::black, Qt::SolidPattern)); gpslabel->setText(QApplication::translate("Form", "\346\234\252\345\256\232\344\275\215", 0, QApplication::UnicodeUTF8)); } painter1.drawEllipse(190, 30, 10, 10); } Gps::~Gps() { } void Gps::updategps(void) { qDebug()<<QObject::tr("enter timer"); char buff[2048]="0"; char Rmcbuff[80]; int counttemp; GPRMC RPM; lseek(file_fd,0,SEEK_SET); int count=0; count=read(file_fd,buff,2048); //從串口中讀取數據 count=512; int rcvflag=0; if(count>0) { char *starp; for(starp=buff;starp<buff+count;starp++) //解析出RMC包 { if((*starp)=='$') { starp++; if((*starp)=='G') { starp++; if((*starp)=='P') { starp++; if((*starp)=='R') { starp++; if((*starp)=='M') { starp++; if((*starp)=='C') { starp++; starp++; for(counttemp=0;(starp<buff+count)||counttemp>=70;starp++) { Rmcbuff[counttemp++]=*starp; if(((*starp)==0x0d)&&((*(starp-1))==0x0A)) { break; qDebug()<<"break1"; } if(((*starp)=='\n')) { break; qDebug()<<"break2"; } // qDebug()<<*starp; } if(counttemp>=63) { rcvflag=1; } else { rcvflag=0; } qDebug()<<Rmcbuff<<"counttemp"<<counttemp; break; } } } } } } } } if(rcvflag) { for(counttemp=0;counttemp<=5;counttemp++) //根據包的內容填充結構體 { RPM.UTCtime[counttemp]=Rmcbuff[counttemp]; } RPM.UTCtime[counttemp]='\0'; RPM.effect[0]=Rmcbuff[7]; RPM.effect[1]='\0'; for(counttemp=9;counttemp<=17;counttemp++) { RPM.weidu[counttemp-9]=Rmcbuff[counttemp]; } RPM.weidu[counttemp-9]='\0'; RPM.NorS[0]=Rmcbuff[19]; RPM.NorS[1]='\0'; for(counttemp=21;counttemp<=30;counttemp++) { RPM.jingdu[counttemp-21]=Rmcbuff[counttemp]; } RPM.jingdu[counttemp-21]='\0'; RPM.EorW[0]=Rmcbuff[32]; RPM.EorW[1]='\0'; for(counttemp=34;counttemp<=38;counttemp++) { RPM.speed[counttemp-34]=Rmcbuff[counttemp]; } RPM.speed[counttemp-34]='\0'; for(counttemp=40;counttemp<=44;counttemp++) { RPM.direct[counttemp-40]=Rmcbuff[counttemp]; } RPM.direct[counttemp-40]='\0'; for(counttemp=46;counttemp<=51;counttemp++) { RPM.UTCcal[counttemp-46]=Rmcbuff[counttemp]; } RPM.UTCcal[counttemp-46]='\0'; for(counttemp=53;counttemp<=57;counttemp++) { RPM.cipianjiao[counttemp-53]=Rmcbuff[counttemp]; } RPM.cipianjiao[counttemp-53]='\0'; RPM.pjfx[0]=Rmcbuff[59]; RPM.pjfx[1]='\0'; RPM.mod[0]=Rmcbuff[61]; RPM.mod[1]='\0'; } if(RPM.EorW[0]=='E') //設定顯示 { jingdu->setText(QApplication::translate("Form", "\344\270\234\347\273\217", 0, QApplication::UnicodeUTF8)); } else { jingdu->setText(QApplication::translate("Form", "\350\245\277\347\273\217", 0, QApplication::UnicodeUTF8)); } if(RPM.NorS[0]=='S') { weidu->setText(QApplication::translate("Form", "\345\215\227\345\215\212\347\220\203", 0, QApplication::UnicodeUTF8)); } else { weidu->setText(QApplication::translate("Form", "\345\214\227\345\215\212\347\220\203", 0, QApplication::UnicodeUTF8)); } weiduline->clear(); jingduline->clear(); gaoduline->clear(); speedline->clear(); directline->clear(); weiduline->insert(RPM.weidu); jingduline->insert(RPM.jingdu); gaoduline->insert("can't receive"); speedline->insert(RPM.speed); directline->insert(RPM.direct); if(RPM.effect[0]=='A') { GpsYes=1; } else { GpsYes=0; } dateTime->setTime(QTime((int)((RPM.UTCtime[0]-'0')*10+RPM.UTCtime[1]-'0'), (int)((RPM.UTCtime[2]-'0')*10+RPM.UTCtime[3]-'0'), (int)((RPM.UTCtime[4]-'0')*10+RPM.UTCtime[5]-'0'),0)); dateTime->setDate(QDate((RPM.UTCcal[4]-'0')*10+RPM.UTCcal[5]-'0'+2000, (RPM.UTCcal[2]-'0')*10+RPM.UTCcal[3]-'0', (RPM.UTCcal[0]-'0')*10+RPM.UTCcal[1]-'0')); } void Gps::updatepaint(void ) { update(); } ? ? ? *************************************主程序main.cpp********************************** #include <QApplication> #include "Gps.h" #include<QtGui> #include <QTimer> int main(int argc, char *argv[]) { // Q_INIT_RESOURCE(application); QApplication app(argc, argv); QTextCodec::setCodecForTr(QTextCodec::codecForName("gb18030")); //added by song Gps * mw = new Gps(); QTimer *timer = new QTimer(mw); QObject::connect(timer, SIGNAL(timeout()), mw, SLOT(updategps())); QTimer *timer1 = new QTimer(mw); QObject::connect(timer1, SIGNAL(timeout()), mw, SLOT(updatepaint())); // QObject::connect(timer, SIGNAL(timeout()), mw, SLOT(update())); timer->start(1000); timer1->start(25); mw->show(); return app.exec(); } 呵呵 拿出來和大家交流交流 剛開始學習qt水平有限 希望大家指出不足 說明：如有人轉載請注明出處 謝謝

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