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[进阶] Arduino mega2560 和商城里的GPS 求助怎么显示经度和纬度 |
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本人已纠结于 从GPS获取经纬度 ，代码如下#include <TinyGPS.h> #include <LiquidCrystal.h> TinyGPS gps; long lat, lon; unsigned long fix_age, time, date, speed, course; unsigned long chars; unsigned short sentences, failed_checksum; int DEG; int MIN1; int MIN2; void LAT(){ //Latitude state DEG=lat/1000000; MIN1=(lat/10000)%100; MIN2=lat%10000; Serial.println("LAT:"); Serial.print(MIN1); Serial.print("."); Serial.print(MIN2); Serial.print("' "); Serial.println(" "); } void LON(){ //Longitude state DEG=lon/1000000; MIN1=(lon/10000)%100; MIN2=lon%10000; Serial.println("LON:"); Serial.print(DEG); Serial.print(MIN1); Serial.print("."); Serial.print(MIN2); Serial.print("' "); Serial.println(" "); } void setup() { Serial.begin(38400); //Set the GPS baud rate. delay(10000); } void loop() { while (Serial.available()) { int c = Serial.read(); // Read the GPS data if (gps.encode(c)) // Check the GPS data { gps.get_position(&lat, &lon, &fix_age); // process new gps info here } } gps.get_position(&lat, &lon, &fix_age); // retrieves +/- lat/long in 100000ths of a degree gps.get_datetime(&date, &time, &fix_age); // time in hhmmsscc, date in ddmmyy //LAT(); //LON(); Serial.println(lat); delay(1000); Serial.println(lon); } 输出结果如下，可是经度和纬度都是9999999999 哪位大神能说一下哪错了吗 $GPGSV,3,1,09,12,23,127,,14,33,274,25,15,31,073,26,18,87,266,25*72 $GPGSV,3,2,09,20,24,134,,21,31,210,21,22,46,307,34,24,66,063,27*75 $GPGSV,3,3,09,25,07,162,18*4C $GPGLL,4000.06376,N,11620.45307,E,111024.60,A,A*69 999999999 999999999 999999999 999999999 999999999 999999999 999999999 [img]file:///C:\Users\DELL\Documents\Tencent Files\2991299442\Image\C2C\3)K~HBT$U~$U%QJY2@_HX_Q.png[/img] |
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#include <LiquidCrystal.h> LiquidCrystal lcd(8, 9, 4, 5, 6, 7); #if defined(ARDUINO) && ARDUINO >= 100 #include "Arduino.h" #define WireSend(args) Wire.write(args) #define WireRead(args) Wire.read(args) #define printByte(args) Serial.write(args) #define printlnByte(args) Serial.write(args),Serial.println() #else #include "WProgram.h" #define WireSend(args) Wire.send(args) #define WireRead(args) Wire.receive(args) #define printByte(args) Serial.print(args,BYTE) #define printlnByte(args) Serial.println(args,BYTE) #endif #include <Wire.h> #define BUFFER_LENGTH 10//Define the buffer length int GPSAddress = 0x42;//GPS I2C Address double Datatransfer(char *data_buf,char num)//Data type converter：convert char type to float { //*data_buf:char data array ;num:float length double temp=0.0; unsigned char i,j; if(data_buf[0]=='-')//负数的情况 { i=1; //数组中的字符型数据转换成整数并累加 while(data_buf[i]!='.') temp=temp*10+(data_buf[i++]-0x30); for(j=0;j<num;j++) temp=temp*10+(data_buf[++i]-0x30); //将转换后的整数转换成浮点数 for(j=0;j<num;j++) temp=temp/10; //转换成负数 temp=0-temp; } else//正数情况 { i=0; while(data_buf[i]!='.') temp=temp*10+(data_buf[i++]-0x30); for(j=0;j<num;j++) temp=temp*10+(data_buf[++i]-0x30); for(j=0;j<num;j++) temp=temp/10 ; } return temp; } void rec_init()//initial GPS { Wire.beginTransmission(GPSAddress); WireSend(0xff);//发送数据所在的地址 Wire.endTransmission(); Wire.beginTransmission(GPSAddress); Wire.requestFrom(GPSAddress,10);//要求从GPS器件读取10个字节 } char ID()//接收语句的ID { char i = 0; char value[7]={ '$','G','P','G','G','A',',' };//要接收的GPS语句的ID内容 char buff[7]={ '0','0','0','0','0','0','0' }; while(1) { rec_init();//接收数据初始化 while(Wire.available()) { buff[i] = WireRead();//接收串口的数据 if(buff[i]==value[i])//对比是否是正确的ID { i++; if(i==7) { Wire.endTransmission();//结束接收 return 1;//接收完毕返回1 } } else i=0; } Wire.endTransmission();//结束接收 } } void UTC()//获取时间信息 { char i = 0,flag=0; char value[7]={ '$','G','P','G','G','A',',' }; char buff[7]={ '0','0','0','0','0','0','0' }; char time[9]={ '0','0','0','0','0','0','0','0','0' };//存放时间数据 double t=0.0; while(1) { rec_init(); while(Wire.available()) { if(!flag) { buff[i] = WireRead(); if(buff[i]==value[i]) { i++; if(i==7) { i=0; flag=1; } } else i=0; } else { time[i] = WireRead(); i++; if(i==9) { t=Datatransfer(time,2);//转换成浮点型数据 t=t+80000.00;//将时间转换成北京时间 Serial.println(t);//输出时间数据 Wire.endTransmission(); return; } } } Wire.endTransmission(); } } void rec_data(char *buff,char num1,char num2)//接收数据子函数 { //*buff：存放接收数据的数组；num1：逗号数目；num2：数组长度。 char i=0,count=0; if(ID()) { while(1) { rec_init(); while(Wire.available()) { buff[i] = WireRead(); if(count!=num1) { if(buff[i]==',') count++; } else { i++; if(i==num2) { Wire.endTransmission(); return; } } } Wire.endTransmission(); } } } float latitude()//获取纬度信息 { char lat[10]={ '0','0','0','0','0','0','0','0','0','0' };//存放纬度数据 rec_data(lat,1 ,10);//接收纬度数据 Serial.println(Datatransfer(lat,5),5);//将纬度数据转换成浮点型数据并输出 return Datatransfer(lat,5); } void lat_dir()//获取纬度方向信息 { char dir[1]={'0'};//存放纬度方向数据 rec_data(dir,2,1);//接收纬度方向数据 printlnByte(dir[0]);//将纬度方向信息输出 } void longitude( )//获取经度信息 { char lon[11]={ '0','0','0','0','0','0','0','0','0','0','0' };//存放经度数据 rec_data(lon,3,11);//接收经度数据 Serial.println(Datatransfer(lon,5),5);//将经度数据转换成浮点型数据并输出 lcd.print(Datatransfer(lon,5),5); } void lon_dir()//获取经度方向信息 { char dir[1]={'0'}; rec_data(dir,4,1); printlnByte(dir[0]);//将纬度方向信息输出 } void altitude()//获取海拔信息 { char i=0,count=0; char alt[8]={ '0','0','0','0','0','0','0','0' }; if(ID()) { while(1) { rec_init(); while(Wire.available()) { alt[i] = WireRead(); if(count!=8) { if(alt[i]==',') count++; } else { if(alt[i]==',') { Serial.println(Datatransfer(alt,1),1); Wire.endTransmission(); return; } else i++; } } Wire.endTransmission(); } } } void setup() { Wire.begin();//IIC初始化 Serial.begin(9600);//设置波特率 Serial.println("DFRobot DFRduino GPS Shield v1.0"); Serial.println("$GPGGA statement information: "); lcd.begin(16,2); } void loop() { while(1) { //Serial.print("UTC:"); //UTC(); // Serial.print("Lat:"); // latitude(); // Serial.print("Dir:"); // lat_dir(); // Serial.print("Lon:"); // longitude(); // Serial.print("Dir:"); // lon_dir(); // Serial.print("Alt:"); // altitude(); // Serial.println(' '); // Serial.println(' '); lcd.begin(16, 2); // 开始 lcd.setCursor(0,0); lcd.print(latitude()); Serial.println("++++++"); Serial.println(latitude()); } } |
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