51单片机解析GPS最新程序.docx

1、51单片机解析GPS最新程序51单片机解析GPS最新程序D LCD1602_RS=0; LCD1602_RW=0; LCD1602_EN=0; switch(BitWidth) case 4: LCDIO=(command & 0xf0); /取高4位 break; case 8: LCDIO=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; lcd

2、delay(); LCD1602_EN=0; void SET_LCD(unsigned char IO_temp) /高4位 LCD_DB7=IO_temp&0x80; LCD_DB6=IO_temp&0x40; LCD_DB5=IO_temp&0x20; LCD_DB4=IO_temp&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; void LCD_en_dat(unsigned char dat) LCD1

3、602_RS=1; LCD1602_RW=0; LCD1602_EN=0; switch(BitWidth) case 4: LCDIO=(dat & 0xf0); /取高4位 break; case 8: LCDIO=dat; break; SET_LCD(LCDIO); LCD1602_EN=1; lcddelay(); 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

4、字符串的坐标，X:0-15，Y:0-1*LCD第一行显示寄存器地址：0X80-0X8F*LCD第二行显示寄存器地址：0XC0-0XCF *2404*LCD第1行显示地址:120(0x800x93) *LCD第2行显示地址:120(0xc00xd3) *LCD第3行显示地址:120(0x940xa7) *LCD第4行显示地址:120(0xd40xe7) =*/ void LCD_set_xy( unsigned char x, unsigned char y ) unsigned char address; if (y =0) address = 0x80 + x; else if(y=1) a

5、ddress = 0xC0 + x; else if(y=2) address = 0x94 + x; else if(y=3) address = 0xD4 + x; LCD_en_command(address); void LCD_write_char( unsigned x,unsigned char y,unsigned char dat) LCD_set_xy( x, y ); LCD_en_dat(dat);void LCD_write_string(unsigned char X,unsigned char Y,unsigned char *s) LCD_set_xy( X,

6、Y ); /set address while (*s) / write character LCDIO=*s; SET_LCD(LCDIO); LCD_en_dat(*s); s +; void LCD_init(unsigned char bw) BitWidth=bw; switch(BitWidth) case 4: LCD_en_command(0x33); / delayms(20); LCD_en_command(0x32); / delayms(20); break; case 8: LCD_en_command(0x38); / delayms(20); LCD_en_com

7、mand(0x38); / delayms(20); break; LCD_en_command(0x08); /0x08 令显示器off delayms(5); LCD_en_command(0x01); /0x01 清屏 清屏指令 delayms(5); LCD_en_command(0x06); /0x06 光标模式设置 进入模式设置指令 写入数据后光标右移 delayms(5); LCD_en_command(0x0c); /0x0c 显示开 令光标,0x0c=不显示,0x0d=显示闪动 delayms(5);void delayms(unsigned char ms) unsigne

8、d char i; while(ms-) for(i = 0; i 115; i+); void lcddelay(void) unsigned char i; for(i = 0; i 2; i+);/* GPS解码显示程序,*/#include#include 1602.h/#includemath.h/#include sbit GPS_SPD=P32; /GPS模块速率设置sbit KEY1=P33; /显示内容分屏切换,(T0,T1引脚 的第二功能为计数器。)char code TIME_AREA= 8; /时区/* 这是做的部分更改*/unsigned long maxspeed,

9、b;unsigned int count=0;unsigned int a5;unsigned char hspeed5;unsigned int dot_count; /小数点计数器/unsigned char x;/GPS数据存储数组unsigned char JD10; /经度unsigned char JD_a; /经度方向unsigned char WD9; /纬度unsigned char WD_a; /纬度方向unsigned char date6; /日期unsigned char time6; /时间unsigned char speed5=0,0,0,.,0; /速度uns

10、igned char high6; /高度unsigned char angle5=0,0,0,0,0; /方位角unsigned char use_sat2; /使用的卫星数unsigned char total_sat2; /天空中总卫星数unsigned char lock; /定位状态/串口中断需要的变量unsigned char seg_count; /逗号计数器unsigned char byte_count; /位数计数器unsigned char cmd_number; /命令类型unsigned char mode; /0：结束模式，1：命令模式，2：数据模式unsigned

11、 char buf_full; /1：整句接收完成，相应数据有效。0：缓存数据无效。unsigned char cmd5; /命令类型存储数组/显示需要的变量unsigned int dsp_count; /刷新次数计数器/unsigned char time_count;bit page;void sys_init(void);bit chk_key(void);main() unsigned char i; char Bhour; sys_init(); lock=1; use_sat0=0; use_sat1=0; total_sat0=0; total_sat1=0; while(1)

12、 if(buf_full=0) /无GPS信号时 dsp_count+; if(dsp_count=65000) LCD_cls(); /清屏 LCD_write_string(0,0,No GPS connect.); LCD_write_string(0,1,Please Check.); 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(); if(!page) /页面1 if(buf_full|0x01) /GGA语句 if(lock=

13、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;i3;i+) LCD_write_char(i+1,0,JDi); LCD_write_char(4,0,.); for(i=3;i10;i+) LCD_write_char(i+2,0,JDi); LCD_write_char(0,1,WD_a); /显示纬度 LCD_write_char(1,1, ); for(i=0;i2;i+) LCD_w

14、rite_char(i+2,1,WDi); LCD_write_char(4,1,.); for(i=2;i9;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_write_char(14,1,total_sat0); LCD_write_char(15,1,total_sat1); buf_full&=0x02; dsp_co

15、unt=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;i3;i+) LCD_write_char(i+1,0,JDi); LCD_write_char(4,0,.); for(i=3;i10;i+) LCD_write_char(i+2,0,JDi); LCD_write_char(0,1,WD_a); /显示纬度 LCD_write_

16、char(1,1, ); for(i=0;i2;i+) LCD_write_char(i+2,1,WDi); LCD_write_char(4,1,.); for(i=2;i=24) Bhour-=24; else if(Bhour0) Bhour+=24; LCD_write_char(0,1,date4); LCD_write_char(1,1,date5); 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_writ

17、e_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_write_char(14,1,time4); LCD_write_char(15,1,time5); LCD_write_string(5,0,knot A); /在此处做的更改 if(lock=0) /如果未定位 LCD_write_string(0,0,

18、-.-); LCD_write_string(11,0,-.-); 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;imaxspeed) maxspeed=b; /* 最大速度处理*/ if(count10) for(i=0;i15) 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

19、; count+; LCD_write_string(5,0,Km/h A); 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;i5;i+) LCD_write_char(11+i,0,anglei); buf_full&=0x04; dsp_count=0; bit chk_key(void) if(!KEY1

20、) delayms(10); if(!KEY1) while(!KEY1); delayms(10); return(1); LCD_cls(); /清屏 return(0);/系统初始化void sys_init() unsigned char i; SCON = 0x50; /* SCON: mode 1, 8-bit UART, enable rcvr */ TMOD = 0x21; /* TMOD: timer 1, mode 2, 8-bit reload */ if(GPS_SPD) TH1 = 0xfa; /* TH1: reload value for 9600 baud 11.059MHz */ else TH1 = 0xfd; /* TH1: reload value for 4800 baud 11.059MHz */ TR1 = 1; /* TR1: timer 1 run */ LCD_init(8); /初始化LCD LCD_write_string(0,0, GPS SIRF II 2 ); LCD_write_string(0,1, 11-11-23 1342 ); for(i=1;i4;i+) delayms(250); /LCD_cls(); IE=0x90; /开总中断、串口中断/串口接收中断void u