基于ARM-LINUX的GPS导航系统论文

1 2 2 3 31.2.2操作系统及选择方案 3 3 1.2.5地图文件存放方案 错 4 5 7 9 9 10 10 11 113.3Mainwidget类 12 12 133.6gps_diver类 14 15 163.9Makefile文件 16 164.1操作系统烧写测试 16 184.3地图显示测试 20 错 234.6其他测试 234.7测试结果分析 23 23参考文献: 23 24 24基于ARM-LINUX的GPS导航系统摘要：本系统由GPS数据采集并显示、地图显示两大部分组成，模拟GPS导航的过程。TheARM-LINUX-basedGPSnavigationsyZhuHengTFT触摸屏TFT触摸屏Fig.1SystemStructureDiagram（调试及下载）Linux操作系统广泛应用在嵌入式设备中，其源代码开放、免费；内核性能高效、多任务、可制定；完善的图形管理、文件管理机制；良好的开发环境、强大的工具集。采用外置sd卡。Sd卡读取速度相对较慢，且会增加成本。但能存放大量数据(1G~8G),地图更新升级也很方便。UDA1341TS；费类电子、工业控制、车载导航、行业PDA等电子产品的开发而设计，主要供广大企业用户进行产品前期软硬件性能评估验证、设计参考用，其小巧、紧凑、一体式的人性化外观设计也是高校、培训机构、嵌入式爱好者学习研究的最佳工具。Fig.2Master-chipcircuitryFig.2.1CircuitofultrasonictransmittingandrNandflash是操作系统的程序存储区，该芯片掉电不丢失数据、寿命长，可反复擦写。芯片容量128M。适合存放高密度数据结构Fig.2.2.1CircuitofultrasonictransmittingandreceivingNorflash是系统BIOS存储区。该芯片掉电不丢失数据、寿命长，可反复擦写。芯片MainTAB-StaSNR*pStaSNR-GPSInfo*pGPSInfo+SetPosition(&GPS_DATAGPSData)Config-SetMap(const&MAP_PARAMMapPara-setCOM(const&COM_PARAMCOMPar-GetObject(GPS)-GetObject(Map)获取定位点的背景地图GPSDriver-intCOMfd;+setCOM(COM_PARAM&COMParam)GPSInfoMAPStaSNR+SetData(constGPS_STASNR&GPSStaSNR)+SetMap(const&MAP_PARAMMapParam)GPSParser+GetData(&GPS_DATAGPSData)+GetData(&GPS_STASNRGPSStaSNR)Maintab类负责程序外框基本定义及程序初始化设置好卫星信号强度数据设置窗口大小、颜色Mainwidgt类负责对各个按钮部件、页面部件的初始化绘制主框绘制上下左右四个按键绘制三个页面标签连接点击按钮事件与处理按键程序地图显示算法：首先把地图分割成n*n小块。然后系统通过得知整X地图四角的坐标，计算出地图每个像素点所对应的坐标。最后根据读取的gps信息，找到对应的地图，并NY修改显示的地图），设置串口属性，访问gps模块计算经纬度坐标值Fig.3.6gps_driverclassFlowchartNYFig.3.7strSNRclassFlowchart#definePDF(level,f由于使用qt开发环境，程序可以在x86平台上与arm平台上分别运行。只需要修改Makefile文件息。分别代表整个地图的左上角经纬度、右下角经纬度、地图像素的长度、地图像素地图软件获取方法：采用专业地图下载软件UMD（universalmapsdownload用户只需在此软件里输入想要地图的四角经纬度坐标。即可得到所需地图。保证mapinfo.txtL里的地图坐标与实际坐标一致。4.1操作系统烧写测试安装操作系统测试的目的是搭建系统的软件环境，便于后续工作Fig.4.1.1Flowchartofprogramofcoolingautomatically0.013%0.012%[9]ThomasL.Floyd.ElectronicDevices[M].Prentice-HallInc,New至此，我的毕业设计已经基本完成。回想过去的点点滴滴，如果没有学校、学院、老师、同学的关心和帮助，我也无法按期完成这令我满意的作品。112UT33D数字万用表13141526精密电流、电压表2#include<qapplication.h>#include<qcanvas.h>#include<qfont.h>#include<qimage.h>#include<qpainter.h>#include<qrect.h>MainTab::MainTab(QWidget*parent,constchar*name):QTabWidget(parent,na{GpConfig->GetObject(GpMaaddTab(GpMainLayout,addTab(GpGPS,QString("GaddTab(GpConfig,QSt}voidMainTab::timerEvent(QTimerEventPDF(3,"TABMastertimeralarGpGPS->mpSatSNR->SetData(GpMainLayout->pzhDrawRect->pGpsdriver->m;GpMainLayout->pzhDrawRect->pGpsdriver->GetData(GpGPS->mpGPSinfo->SetData(PDF(3,"TABMastertimeren}{}{}{{{}priv->buffer[priv->}{{}}}{}{{{pcmd_buf->buf[pcmd_buf->pos]=(char)(idatpcmd_buf->pos++;pcmd_}}while(j++<BUFSIZE);PDF(2,"pos=%d\n",pcmd_bpcmd_buf->buf[pcmd_buf->//PDF(4,"pos=%dibufpos=%damsg=%s\n",pos,}{}{}intzh_gpsDriver::G{1:memcpy(&(mGPSStaSNR.Sta[0memcpy(&(mGPSStaSNR.Sta[1]),&(pGPS_GPGSV->Sta2),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[2]),&(pGPS_GPGSV->Sta3),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[3]),&(pGPS_GPGSV->Sta4),sizeof(STA_INF2:memcpy(&(mGPSStaSNR.Sta[4]),&(pGPS_GPGSV->Sta1),memcpy(&(mGPSStaSNR.Sta[5]),&(pGPS_GPGSV->Sta2),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[6]),&(pGPS_GPGSV->Sta3),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[7]),&(pGPS_GPGSV->Sta4),sizeof(STA_INF3:memcpy(&(mGPSStaSNR.Sta[8]),&(pGPS_GPGSV->Stamemcpy(&(mGPSStaSNR.Sta[9]),&(pGPS_GPGSV->Sta2),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[10]),&(pGPS_GPGSV->Sta3),sizeof(STA_INFmemcpy(&(mGPSStaSNR.Sta[11]),&(pGPS_GPGSV->Sta4),sizeof(STA_INF}}intzh_gpsDriver::CMD_Ana{PDF(3,"sentence:%s\nend\n",pcmd_bpcmd=strstr(&pcmd_buf->buf[0],"$GPRMC");/{{}PDF(3,"gpsSwFiled=%c\n",mpGPS_GPRMC-//Gpsid,utc_time,gps_sw,latitude,lati_ns,longitude,longi_ew,spd);sscanf(pcmd,"%[^,],%[^,],%c,%lf,%c,%lf,%c,%lf,%lf,%[^,],%lf,mpGPS_GPRMC->Gpsid,mpGPS_GPRMC->utc_time,&mpGPS_GPRMC->gps_sw,&mpGPS_GPRMC->latitude,&mpGPS_GPRMC->lati_ns,&mpGPS_GPRMC->longitude,&mpGPS_GPRMC->longi_ew,/*7*/&mpGPS_GPRMC->speed,&mpGPS_GPRMC->angle,mpGPS_GPRMC->utc_date,&mpGPS_GPRMC->magneDeclinat,&mpGPS_GPRMC->magneDeclinatAngle,mpGPS_GPRMC->sumCheck);CMDBUF_Init(&buf);return3;}mpGPS_GPRMC->latitude=ddmm2dddd((mpGPS_GPRMC->latitude/100));mpGPS_GPRMC->longitude=ddmm2dddd((mpGPS_GPRMC->longitude/100));mpGPS_GPRMC->gps_sw,mpGPS_GPRMC->latitude,mpGPSmpGPS_GPRMC->longitude,mpGPS_GPRM}pcmd=strstr(&pcmd_buf->buf[0],"$GPGSV"){{}sscanf(pcmd,"%[^,],%d,%d,%d,%d,mpGPS_GPGSV->GPGSV,&mpGPS_GPGSV->GSV_NOB,&m&mpGPS_GPGSV->Sta1.StaID,&mpGPS_GPGSV->Sta1.StaA,&mpGPS_GPGSV->Sta1.&mpGPS_GPGSV->Sta2.StaID,&mpGPS_GPGSV->Sta2.StaA,&mpGPS_GPGSV->Sta2.&mpGPS_GPGSV->Sta3.StaID,&mpGPS_GPGSV->Sta3.StaA,&mpGPS_GPGSV->Sta3.&mpGPS_GPGSV->Sta4.StaID,&mpGPS_GPGSV->Sta4.StaA,&mpGPS_GPGSV->Sta4.mpGPS_GPGSV->sumChe}}}voidzh_gpsDriver::CMDBUF_Init(CMD_BUF*pcmd_buf){}{GPSData.lati=mpGPS_GPRMC-GPSData.lont=mpGPS_GPRMC->GPSData.sw=mpGPS_GPRM}{}{{}{}{}}{}}voidzh_gpsDriver::timerEvent(QTimerEvent{{{{PDF(2,"ttyreadbytes1=%d\n",re//================while(GPRS_GetTextLineFromFIFO(&buf))}}PDF(3,"zh_gpsDrivertimerout!\n");//=========================}elsePDF(3,"notthis}intzhMap::CMD_Analysis(char*pcmd_buf){pcmd=strstr(&pcmd_buf[0],"mapinfo:");/{msgid,&A_lont,&A_lati,&B_lont,&B_lati,&Width,&Height,/PDF(2,"A_lont=%lf,A_lati=%lf,B_lont=%lf,B_lati=%lf\n",APDF(2,"Width=%d,Height=%d,subWidth=%d\n",Width,Height,s}pcmd=strstr(&pcmd_buf[0],"xxx");}{OfilePtr=Mapstr.latin1();//Mapstr.toStdString();//".PDF(2,"OfilePtr=%s\n",OPDF(1,"can'topenmap.cfgfiwhile(fgets(msg,sizeof(msg),infile)!=NUL{}}{/*A_lont=114.350683;//左上点经A_lati=30.5360;//左上点B_lati=30.521867;//mapPath=QStrmappath.latinWidthNumber=Width/subWidth+1;//图像水平分割的HeightNumber=Height/subWidth+1;///图像垂直pixPerLont=((double)Width)/(B_lonpixPerLati=((double)Height)/(A_latPDF(2,"WidthNumber=%dHeightNumber=%dpixPerLont=%lfpixPerLati=%lf\n",WidthNumber,HeightNumber,pixPerLont,pi}{mapPath=QStrmappath.latinWidthNumber=Width/subWidth+1;//图像水平分割的HeightNumber=Height/subWidth+1;///图像垂直pixPerLont=((double)Width)/(B_lonpixPerLati=((double)Height)/(A_latPDF(2,"WidthNumber=%dHeightNumber=%dpixPerLont=%lfpixPerLati=%lf\n",WidthNumber,HeightNumber,pixPerLont,pi}intzhMap::getMapABinfo(GPS_{A_gpsdata.lati=A_laA_gpsdata.lont=A_lo}intzhMap::getCurrMap(cons{{{xcenter=(int)((gpsdata.lont-A_lont)ycenter=(int)((A_lati-gpsdata.laAx=xcenter-(zhGpsWidth)Ay=ycenter-(zhGpsHeight)fileStr.sprintf("%s/_%02picloadFlag=pixmapA.loadfileStr.sprintf("%s/_%02picloadFlag=pixmapB.loadfileStr.sprintf("%s/_%02picloadFlag=pixmapC.loadfileStr.sprintf("%s/_%02picloadFlag=pixmapD.loadpaintmap.begin(&pixAxW=subWidth-Ax%subWidAyH=subWidth-Ay%subWid{paintmap.drawPixmap(0,0,pixmapA,(Ax%subWidth),(Ay%subWidth),(z}elseif(AxW>zhGpsWid{paintmap.drawPixmap(0,0,pixmapA,(Ax%subWidth),(Ay%subWidth),(zpaintmap.drawPixmap(0,AyH,pixmapC,(Ax%subWidth),0,(zhGpsWidth)}elseif(AxW<=zhGpsWid{pixmapA,(Ax%subWidth),(Ay%AxW,(zhGpsHeight-AyH));//orgxypicppaintmap.drawPixmap(AxW,AyH,pi}elseif(AxW<=zhGpsWi{paintmap.drawPixmap(0,0,pixmapA,(Ax%subWidth),(Ay%subWidth),AxW,zhGpsHeight);//orgpaintmap.drawPixmap(AxW,0,pixmapB,0,(By%subWidth),}}QCanvasView(&canvas,parent,name){//====paintabpicpcanvas=&canvas;zhmap.resize(QSize(zhGpsWidth,zhGpsHeight));mainmap.getMapABinfo(MapInfoApositon,MapInfoBpositon);maingps.lati=MapInfoBpositon.lati+(MapInfoApositon.lati-MapInfoBpositon.latmaingps.lont=MapInfoApositon.lont+(MapInfoBpositon.lont-MapInfoApositon.lonmainmap.getCurrMap(maingps,zhmap);canvas.setBackgroundPixmap(zhmap);canvas.resize(zhGpsWidth,zhGpsHeight);//setFixedSize(zhGpsHeight,zhGpsHeight);r=newQCanvasRectangle(zhGpsWidth/2,zhGpsHeight/2,zhP