51单片机解析GPS最新程序

1、51单片机解析GPSt新程序这其中包括1602驱动头文件，和解析主程序，使用时分开粘贴到对应的文件中/*LCD1602马区动，兼容LCD2402*/sbitLCD_DB0=P0A0;sbitLCD_DB1=P0A1；sbitLCD_DB2=P0A2;sbitLCD_DB3=P0A3;sbitLCD_DB4=P0A4;sbitLCD_DB5=P0A5;sbitLCD_DB6=P0A6；sbitLCD_DB7=P0A7;sbitLCD1602_RS=P2A4;sbitLCD1602_RW=P2A5;charsbitLCD1602_EN=P2A6；voidLCD_write_char(unsigne

2、dx,unsignedy,unsignedchardat);在指定位置显示字符voidLCD_wMte_string(unsignedcharX,unsignedcharY,unsignedchar*s);/在指定位置显示字符串voidLCD_cls(void);清屏voidLCD_en_command(unsignedcharcommand);voidLCD_en_dat(unsignedchartemp);voidLCD_set_xy(unsignedcharx,unsignedchary);voidLCD_init(unsignedcharbw);voidSET_LCD(unsigned

3、charIO_temp);voiddelayms(unsignedcharms);voidlcddelay(void);unsignedcharLCDIO;unsignedcharBitWidth;voidLCD_cls(void)LCD_en_command(0x01);/0x01清屏delayms(2);voidLCD_en_command(unsignedcharcommand)LCD1602_RS=0;LCD1602_RW=0;LCD1602_EN=0;switch(BitWidth)case4:LCDIO=(command&0xf0);取高4位break;case8:LCDI

4、O=command;break;SET_LCD(LCDIO);LCD1602_EN=1;lcddelay();LCD1602_EN=0;if(BitWidth=4)LCDIO=(command&0x0f)<<4;取低4位SET_LCD(LCDIO);LCD1602_EN=1;lcddelay();LCD1602_EN=0;voidSET_LCD(unsignedcharIO_temp)高4位LCD_DB7=IO_temp&0x80;LCD_DB6=IO_temp&0x40;LCD_DB5=IO_temp&0x20;LCD_DB4=IO_temp&am

5、p;0x10;低4位if(BitWidth=8)LCD_DB3=IO_temp&0x08;LCD_DB2=IO_temp&0x04;LCD_DB1=IO_temp&0x02;LCD_DB0=IO_temp&0x01;voidLCD_en_dat(unsignedchardat)LCD1602_RS=1;LCD1602_RW=0;LCD1602_EN=0;switch(BitWidth)case4:LCDIO=(dat&0xf0);取高4位break;case8:LCDIO=dat;break;SET_LCD(LCDIO);LCD1602_EN=1;lcd

6、delay();LCD1602_EN=0;if(BitWidth=4)LCDIO=(dat&0x0f)<<4;取低4位SET_LCD(LCDIO);LCD1602_EN=1;lcddelay();LCD1602_EN=0;)/*1602输入参数:x、y :显示字符串的坐标，X:0-15, Y:0-1*LCD*LCD第一行显示寄存器地址：0X80-0X8F第二行显示寄存器地址：0XC0-0XCF*2404*LCD*LCD*LCD*LCD第1行显示地址：120(0x800x93) 第2行显示地址：120(0xc00xd3) 第3行显示地址：120(0x940xa7) 第4行显示

7、地址：120(0xd40xe7)*/voidLCD_set_xy(unsignedcharx,unsignedchary)(unsignedcharaddress;if(y=0)address=0x80+x;elseif(y=1)address=0xC0+x;elseif(y=2)address=0x94+x;elseif(y=3)address=0xD4+x;LCD_en_command(address);charvoidLCD_write_char(unsignedx,unsignedy,unsignedchardat)LCD_set_xy(x,y);LCD_en_dat(dat);voi

8、dLCD_write_string(unsignedcharX,unsignedcharY,unsignedchar*s)LCD_set_xy(X,Y);/setaddresswhile(*s)/writecharacterLCDIO=*s;SET_LCD(LCDIO);LCD_en_dat(*s);s+;LCD_init(unsignedcharbw)itWidth=bw;case4:LCD_en_command(0x33);delayms(20);LCD_en_command(0x32);delayms(20);break;case8:LCD_en_command(0x38);delaym

9、s(20);LCD_en_command(0x38);delayms(20);break;LCD_en_command(0x08);0x08delayms(5);LCD_en_command(0x01);0x01delayms(5);LCD_en_command(0x06);0x06模式设置指令写入数据后光标右移delayms(5);LCD_en_command(0x0c);0x0c标,0x0c=不显示,0乂0=显示闪动delayms(5);令显示器off清屏清屏指令光标模式设置进入显示开 令光voiddelayms(unsignedcharms)unsignedchari;while(ms-

10、)for(i=0;i<115;i+);voidlcddelay(void)unsignedchari;for(i=0;i<2;i+);/*GPS解码显示程序,*#include<reg52.h>#include”1602.h”/#include"math.h"#include<stdlib.h>sbitGPS_SPD=P3八2;/GPS模块速率设置sbitKEY1=P3八3;显示内容分屏切换，（T0,T1脚的第二功能为计数器。）charcodeTIME_AREA=8;时区/*这是做的部分更改*/unsignedlongmaxspeed,b

11、;unsignedintcount=0;unsignedinta5;unsignedcharhspeed5;unsignedintdot_count;小数点计数器/unsignedcharx;/GPS数据存储数组unsignedcharJD10;经度unsignedcharJD_a;经度方向unsignedcharWD9;纬度unsignedcharWD_a;纬度方向unsignedchardate6;日期unsignedchartime6;时间unsignedcharspeed5='0','0','0','.','0&#

12、39;速度unsignedcharhigh6;高度unsignedcharangle5='0','0','0','0','0'方位角unsignedcharuse_sat2;使用的卫星数unsignedchartotal_sat2;天空中总卫星数unsignedcharlock;定位状态串口中断需要的变量unsignedcharseg_count;逗号计数器unsignedcharbyte_count;/位数计数器unsignedcharcmd_number;/命令类型unsignedcharmode;。：结束模式

13、）1:命令模式,2:数据模式unsignedcharbuf_full;/1:整句接收完成）相应数据有效。0:缓存数据无效。unsignedcharcmd5;命令类型存储数组显示需要的变量unsignedintdsp_count;刷新次数计数器/unsignedchartime_count;bitpage；voidsys_init(void);bitchk_key(void);main()unsignedchari;charBhour;sys_init();lock=1;use_sat0='0'use_sat1='0'total_sat0='0't

14、otal_sat1='0'无GPS信号时while(1)if(buf_full=0)dsp_count+;if(dsp_count>=65000)LCD_cls();清屏LCD_write_string(0,0,"NoGPSconnect.");LCD_write_string(0,1,"PleaseCheck.");while(buf_full=0);LCD_cls();dsp_count=0;else有GPS信号时if(chk_key()检测到按键切换显示page=!page;LCD_cls();页面1示经度if(!page)i

15、f(buf_full|0x01)/GGA语句if(lock=0)如果未定位LCD_write_string(0,0,"*-.-.-")LCD_write_string(0,1,"*-.-.-");else如果已定位LCD_write_char(0,0,JD_a);/显for(i=0;i<3;i+)LCD_write_char(i+1,0,JDi);LCD_write_char(4,0,'.');for(i=3;i<10;i+)LCD_write_char(i+2,0,JDi);LCD_write_char(0,1,WD_a);

16、显示纬度LCD_write_char(1,1,'');for(i=0;i<2;i+)LCD_write_char(i+2,1,WDi);LCD_write_char(4,1,'.');for(i=2;i<9;i+)LCD_write_char(i+3,1,WDi);LCD_write_char(14,1,use_sat0);显示接收卫星数LCD_write_char(15,1,use_sat1);buf_full&=0x01;dsp_count=0;if(buf_full|0x02)GSV语句LCD_wMte_char(14,1,total_

17、sat0);LCD_write_char(15,1,total_sat1);buf_full&=0x02;dsp_count=0;if(buf_full|0x04)if(lock=0)如果未定位LCD_write_string(0,0,"*-.-.-"):LCD_write_string(0,1,"*-.-.-");else如果已定位LCD_write_char(0,0,JD_a);显示经度for(i=0;i<3;i+)LCD_write_char(i+1,0,JDi);显示纬显示LCD_write_char(4,0,'.'

18、);for(i=3;i<10;i+)LCD_write_char(i+2,0,JDi);LCD_write_char(0,1,WD_a);度LCD_write_char(1,1,'');for(i=0;i<2;i+)LCD_write_char(i+2,1,WDi);LCD_write_char(4,1,'.');for(i=2;i<9;i+)LCD_write_char(i+3,1,WDi);LCD_write_char(14,0,use_sat0);接收卫星数LCD_write_char(15,0,use_sat1);buf_full&am

19、p;=0x04;dsp_count=0;else页面2if(buf_full|0x01)/GGA语句buf_full&=0x01;dsp_count=0;if(buf_full|0x02)buf_full&=0x02;dsp_count=0;if(buf_full|0x04)RMC语句Bhour=(time0-0x30)*10+time1-0x30)+TIME_AREA；if(Bhour>=24)Bhour-=24;elseif(Bhour<0)Bhour+=24;LCD_write_char(0,1,date4);LCD_write_char(1,1,date5)

20、;LCD_write_char(2,1,date2);LCD_write_char(3,1,date3);LCD_write_char(4,1,date0);LCD_write_char(5,1,date1);LCD_write_char(8,1,Bhour/10+0x30);LCD_write_char(9,1,Bhour%10+0x30);LCD_write_char(10,1,':');LCD_write_char(11,1,time2);LCD_write_char(12,1,time3);LCD_write_char(13,1,':');LCD_wri

21、te_char(14,1,time4);A")；LCD_write_char(15,1,time5);LCD_write_string(5,0,"knot在此处做的更改if(lock='0')如果未定位LCD_write_string(0,0,"-.-");LCD_write_string(11,0,"一.-");else已经定位，在此处做的改动。/*/*最大速度处理*/dot_count=0;b=0;for(i=0;i<5;i+)if(speedi!='.')dot_count+;elsebre

22、ak;switch(dot_count)case 1:b=(speed0-'0')*10+(speed2-'0')*1.852;break;case 2:b=(speed0-'0')*100+(speed1-'0')*10+(speed4-'0')*1.852;break;case 3:b=(speed0-'0')*1000+(speed1-'0')*100+(speed2-'0')*10+(speed4-'0')*1.852;break;if(b&g

23、t;maxspeed)maxspeed=b;/*最大速度处理*/if(count<10)for(i=0;i<5;i+)LCD_write_char(i,0,speedi);knotcount+;elseif(count>15)count=0;hspeed0=maxspeed/1000+0x30;把,小数转成字符数组hspeed1=(maxspeed/100)%10+0x30;hspeed2=(maxspeed/10)%10+0x30;hspeed3='.'hspeed4=maxspeed%10+0x30;count+;LCD_write_string(5,0,

24、"Km/hA");LCD_write_char(0,0,hspeed0);LCD_write_char(1,0,hspeed1);LCD_write_char(2,0,hspeed2);LCD_write_char(3,0,hspeed3);LCD_write_char(4,0,hspeed4);/最大速度显*/*/for(i=0;i<5;i+)LCD_write_char(11+i,0,anglei);buf_full&=0x04;dsp_count=0;bitchk_key(void)if(!KEY1)delayms(10);if(!KEY1)while(

25、!KEY1);delayms(10);return(1);LCD_cls();清屏return(0);系统初始化void sys_init() unsigned char i; SCON = 0x50;/*enable rcvr */TMOD = 0x21; /*reload */if(GPS_SPD)TH1 = 0xfa;baud 11.059MHz */elseSCON:TMOD:/* TH1:mode 1, 8-bit UART, timer 1, mode 2, 8-bitreload value for 9600TH1=0xfd;/*TH1:reloadvaluefor4800bau

26、d11.059MHz*/TR1=1;/*TR1:timer1run*/LCD_init(8);初始化LCDLCD_write_string(0,0,"GPSSIRFII2");LCD_write_string(0,1,”11-11-231342");for(i=1;i<4;i+)delayms(250);/LCD_cls();IE=0x90;开总中断、串口中断串口接收中断voiduart(void)interrupt4unsignedchartmp;if(RI)tmp=SBUF;switch(tmp)case'$':cmd_number=0;

27、命令类型清空mode=1;byte_count=0；break;case',':接收命令模式接收位数清空seg_count+;byte_count=0；break;逗号计数加1case1*1.switch(cmd_number)case 1:buf_full|=0x01;break;case 2:buf_full|=0x02;break;case 3:buf_full|=0x04;break;mode=0;break;default:if(mode=1)命令种类判断接收字符放/如果类型数cmdbyte_count=tmp;入类型缓存if(byte_count>=4)接收完

28、毕，判断类型if(cmd0='G')if(cmd1='P')if(cmd2='G')if(cmd3='G')if(cmd4='A')cmd_number=1;mode=2;seg_count=0;byte_count=0;elseif(cmd3='S')if(cmd4='V')cmd_number=2;mode=2;seg_count=0;byte_count=0；elseif(cmd2='R')if(cmd3='M')if(cmd4='C')cmd_number=3;mode=2;seg_count=0;byte_count=0;elseif(mode=2)接收数据处理switch(cmd_number)case 1:类型1数据接收GPGGAswitch(seg_count)case 2: 纬度处理if(byte_count<9)WDbyte_count=tmp;break;case 3: 纬度方向处理if(byte_count<1)WD_a=tmp;break;