51单片机对GPS卫星信号的解码并通过LCD1602或12864显示

主程序如下

#include "main.h"
#include "LCD1602.h"
#include "GPS.h"//¶¨Òå±äÁ¿
unsigned char KEY_NUM = 0;
char temp,temp1,b,d;
bit Page = 0;
unsigned char xdata Display_GPGGA_Buffer[68];
unsigned char xdata Display_GPRMC_Buffer[68];
bit Flag_OV = 0;
bit Flag_Calc_GPGGA_OK = 0;
bit Flag_Calc_GPRMC_OK = 0;//****************************************************
//Ö÷º¯Êý
//****************************************************
void main()
{unsigned char i = 0;Init_LCD1602();LCD1602_write_com(0x80);                       //Ö¸ÕëÉèÖÃLCD1602_write_word("Welcome to use!");Delay_ms(1000);Uart_Init();while(1){Scan_Key();if(Flag_GPS_OK == 1 && RX_Buffer[4] == 'G' && RX_Buffer[6] == ',' && RX_Buffer[13] == '.')           //È·¶¨ÊÇ·ñÊÕµ½"GPGGA"ÕâÒ»Ö¡Êý¾Ý{for( i = 0; i < 68 ; i++){Display_GPGGA_Buffer[i] = RX_Buffer[i];  }Hour = (Display_GPGGA_Buffer[7]-0x30)*10+(Display_GPGGA_Buffer[8]-0x30)+8;//UTCÊ±¼ä×ª»»µ½±±¾©Ê±¼ä       UTC+8//0x30ÎªASCII×ª»»ÎªÊý×Öif( Hour >= 24)                //Òç³ö{Hour %= 24;             //»ñÈ¡µ±Ç°HourFlag_OV = 1;         //ÈÕÆÚ½øÎ»}else{Flag_OV = 0;}Min_High = Display_GPGGA_Buffer[9];Min_Low = Display_GPGGA_Buffer[10];Sec_High = Display_GPGGA_Buffer[11];Sec_Low = Display_GPGGA_Buffer[12];Flag_Calc_GPGGA_OK = 1;}if(Flag_GPS_OK == 1 && RX_Buffer[4] == 'M' && RX_Buffer[52] == ',' && RX_Buffer[59] == ',')   //È·¶¨ÊÇ·ñÊÕµ½"GPRMC"ÕâÒ»Ö¡Êý¾Ý{for( i = 0; i < 68 ; i++){Display_GPRMC_Buffer[i] = RX_Buffer[i];  }Year_High = Display_GPRMC_Buffer[57];Year_Low = Display_GPRMC_Buffer[58];Month_High = Display_GPRMC_Buffer[55];Month_Low = Display_GPRMC_Buffer[56];Day_High = Display_GPRMC_Buffer[53];Day_Low = Display_GPRMC_Buffer[54];if(Flag_OV == 1)            //ÓÐ½øÎ»{UTCDate2LocalDate();           //UTCÈÕÆÚ×ª»»Îª±±¾©Ê±¼ä     }Flag_Calc_GPRMC_OK = 1;}if(Page == 0 && Flag_Calc_GPGGA_OK == 1)                          //½ÓÊÕµ½GPGGAÊý¾Ý  °´¼üÎ´°´ÏÂ{/*LED1 = ~LED1;  */Flag_Calc_GPGGA_OK = 0;LCD1602_write_com(0x80);          //ÉèÖÃÖ¸ÕëLCD1602_write_data(Display_GPGGA_Buffer[28]);         //N »òÕßS ½«±äÁ¿¸³ÓèDisplay GPGGA BUFFER ²¢Ö±½Ó¶ÁÈ¡LCD1602_write_data(Display_GPGGA_Buffer[17]);            //Î³¶ÈLCD1602_write_data(Display_GPGGA_Buffer[18]);         //Î³¶ÈLCD1602_write_data(0xdf);                             //¶ÈLCD1602_write_data(Display_GPGGA_Buffer[19]);           //Î³¶ÈLCD1602_write_data(Display_GPGGA_Buffer[20]);LCD1602_write_data(Display_GPGGA_Buffer[21]);     LCD1602_write_data(Display_GPGGA_Buffer[22]);LCD1602_write_data(Display_GPGGA_Buffer[23]);LCD1602_write_data(Display_GPGGA_Buffer[24]);LCD1602_write_data(Display_GPGGA_Buffer[25]);LCD1602_write_data(Display_GPGGA_Buffer[26]);LCD1602_write_word("'");           //·ÖLCD1602_write_com(0x80+0x40);          //ÉèÖÃÖ¸Õë          LCD1602_write_data(Display_GPGGA_Buffer[42]);           //E »òÕß W        Í¬ÉÏLCD1602_write_data(Display_GPGGA_Buffer[30]);         //¾¶ÈLCD1602_write_data(Display_GPGGA_Buffer[31]); LCD1602_write_data(Display_GPGGA_Buffer[32]);   LCD1602_write_data(0xdf);                               LCD1602_write_data(Display_GPGGA_Buffer[33]);           LCD1602_write_data(Display_GPGGA_Buffer[34]);LCD1602_write_data(Display_GPGGA_Buffer[35]);   //Ð¡ÊýµãLCD1602_write_data(Display_GPGGA_Buffer[36]);LCD1602_write_data(Display_GPGGA_Buffer[37]);LCD1602_write_data(Display_GPGGA_Buffer[38]);LCD1602_write_data(Display_GPGGA_Buffer[39]);LCD1602_write_data(Display_GPGGA_Buffer[40]);  LCD1602_write_word("'");  }if(Page == 1 && Flag_Calc_GPRMC_OK == 1){/*LED1 = ~LED1;*/Flag_Calc_GPRMC_OK = 0;LCD1602_write_com(0x80);           //ÉèÖÃÖ¸ÕëLCD1602_write_word("20");LCD1602_write_data(Year_High);LCD1602_write_data(Year_Low);LCD1602_write_data('-');LCD1602_write_data(Month_High);LCD1602_write_data(Month_Low);LCD1602_write_data('-');LCD1602_write_data(Day_High);LCD1602_write_data(Day_Low);LCD1602_write_com(0x80+0x40);            //ÉèÖÃÖ¸ÕëLCD1602_write_data(Hour/10+0x30);LCD1602_write_data(Hour%10+0x30);LCD1602_write_data(':');LCD1602_write_data(Min_High);LCD1602_write_data(Min_Low);LCD1602_write_data(':');LCD1602_write_data(Sec_High);LCD1602_write_data(Sec_Low);LCD1602_write_word("  ");LCD1602_write_data(Display_GPGGA_Buffer[54]);    LCD1602_write_data(Display_GPGGA_Buffer[55]);   LCD1602_write_data(Display_GPGGA_Buffer[56]);   LCD1602_write_data(Display_GPGGA_Buffer[57]);LCD1602_write_word("m");}        }
}
//****************************************************
//UTCÈÕÆÚÓëµ±µØÈÕÆÚ×ª»»
//****************************************************
void UTCDate2LocalDate(void)
{Day = (Day_High - 0x30) * 10 + (Day_Low-0x30) + 1;      //ÈÕ  ¼ÓÒ»Month = (Month_High - 0x30) * 10 + (Month_Low - 0x30);Year = 2000 + (Year_High - 0x30) * 10 + (Year_Low - 0x30);MaxDay = GetMaxDay(Month,Year);             //»ñÈ¡µ±ÔÂ ÌìÊý ×î´óÖµif(Day > MaxDay)       //Òç³ö{Day = 1;Month += 1;if(Month > 12){Year+=1;}}Day_High = Day/10 + 0x30;              //×ª»»ÈÕÆÚÖµÎªASCIIDay_Low = Day%10 + 0x30;Month_High = Month/10 + 0x30;            //×ª»»ÔÂ·ÝÖµÎªASCIIMonth_Low = Month%10 + 0x30;Year_High = Year%100/10 + 0x30;          //×ª»»Äê·ÝÖµÎªASCIIYear_Low = Year%10 + 0x30;
}//****************************************************
//»ñÈ¡µ±ÔÂÈÕÆÚ×î´óÖµ
//****************************************************
unsigned char GetMaxDay(unsigned char Month_Value,unsigned int Year_Value)
{unsigned char iDays;switch(Month_Value){case 1:case 3:case 5:case 7:case 8:case 10:case 12:{iDays = 31;}break;case 2:{//2ÔÂ·Ý±È½ÏÌØÊâ£¬ÐèÒª¸ù¾ÝÊÇ²»ÊÇÈòÄêÀ´ÅÐ¶Ïµ±ÔÂÊÇ28Ìì»¹29ÌìiDays = IsLeapYear(Year_Value)?29:28;}break;case 4:case 6:case 9:case 11:{iDays = 30;}break;default : break;}return(iDays);
}//****************************************************
//ÈòÄê¼ì²â
//****************************************************
bit IsLeapYear(unsigned int uiYear)
{return (((uiYear%4)==0)&&((uiYear%100)!=0))||((uiYear%400)==0);
}//****************************************************
//°´¼üÉ¨Ãè³ÌÐò
//****************************************************
void Scan_Key()
{if( KEY4 == 0 )                      //°´¼ü1É¨Ãè{Delay_ms(10);                   //ÑÓÊ±È¥¶¶if( KEY4 == 0 ){while(KEY4 == 0);         //µÈ´ýËÉÊÖKEY_NUM = 3;Page = ~Page;LCD1602_write_com(0X01);   //ÇåÆÁ}}
}
//****************************************************
//MSÑÓÊ±º¯Êý(12M¾§ÕñÏÂ²âÊÔ)
//****************************************************
void Delay_ms(unsigned int n)
{unsigned int  i,j;for(i=0;i<n;i++)for(j=0;j<123;j++);
}

1602的程序如下

#include "LCD1602.h"//****************************************************
//MSÑÓÊ±º¯Êý(12M¾§ÕñÏÂ²âÊÔ)
//****************************************************
void LCD1602_delay_ms(unsigned int n)
{unsigned int  i,j;for(i=0;i<n;i++)for(j=0;j<123;j++);
}//****************************************************
//Ð´Ö¸Áî
//****************************************************
void LCD1602_write_com(unsigned char com) //Ê¹LCD1602Ê¹ÄÜµÈÖ¸Áî
{LCD1602_RS = 0;LCD1602_delay_ms(1);LCD1602_EN = 1;LCD1602_PORT = com;LCD1602_delay_ms(1);LCD1602_EN = 0;
}//****************************************************
//Ð´Êý¾Ý
//****************************************************
void LCD1602_write_data(unsigned char dat)
{LCD1602_RS = 1;LCD1602_delay_ms(1);   LCD1602_PORT = dat;LCD1602_EN = 1;LCD1602_delay_ms(1);LCD1602_EN = 0;
}//****************************************************
//Á¬ÐøÐ´×Ö·û
//****************************************************
void LCD1602_write_word(unsigned char *s)
{while(*s>0){LCD1602_write_data(*s);s++;}
}void Init_LCD1602()        //Î´½Óµ½GPSÖ¸ÁîÇ° LCD1602µÈ´ý×´Ì¬
{LCD1602_EN = 0;LCD1602_RW = 0;                       //ÉèÖÃÎªÐ´×´Ì¬LCD1602_write_com(0x38);          //ÏÔÊ¾Ä£Ê½Éè¶¨LCD1602_write_com(0x0c);          //¿ª¹ØÏÔÊ¾¡¢¹â±êÓÐÎÞÉèÖÃ¡¢¹â±êÉÁË¸ÉèÖÃLCD1602_write_com(0x06);          //Ð´Ò»¸ö×Ö·ûºóÖ¸Õë¼ÓÒ»LCD1602_write_com(0x01);          //ÇåÆÁÖ¸Áî
}

GPS程序如下

#include "GPS.h"unsigned char RX_Buffer[68];
unsigned char RX_Count = 0;
unsigned char Hour = 0,Min_High = 0,Min_Low = 0,Sec_High = 0,Sec_Low = 0;
unsigned char Month = 0,Day = 0,Month_High = 0, Month_Low = 0,Day_Low = 0 ,Day_High = 0, Year_High = 0,Year_Low = 0;
unsigned int Year = 0;
bit Flag_GPS_OK = 0;
unsigned char MaxDay = 0;void Uart_Init()
{SCON = 0X50;  //UART·½Ê½1£»8Î»UARTREN  = 1;     //ÔÊÐí´®ÐÐ¿Ú½ÓÊÕÊý¾ÝPCON = 0x00;  //SMOD=0;²¨ÌØÂÊ²»¼Ó±¶TMOD = 0x20;  //T1·½Ê½2£¬ÓÃÓÚ²úÉú²¨ÌØÂÊTH1  = 0xFD;  //×°³õÖµTL1  = 0xFD;TR1  = 1;     //Æô¶¯¶¨Ê±Æ÷1EA   = 1;     //´ò¿ªÈ«¾ÖÖÐ¶Ï¿ØÖÆES   = 1;     //´ò¿ª´®ÐÐ¿ÚÖÐ¶Ï
}void RECEIVE_DATA(void) interrupt 4 using 3      //ÖÐ¶Ï4Ê¹ÓÃ3ºÅ¼Ä´æ´¦
{ unsigned char temp = 0;ES=0;temp = SBUF;RI = 0;
//  LED1 = ~LED1;if(temp == '$'){RX_Count = 0;Flag_GPS_OK = 0;       }RX_Buffer[RX_Count++] = temp;if(RX_Count >= 59){RX_Count = 59;Flag_GPS_OK = 1;        }ES=1;
}

三个.h文件

#ifndef __LCD1602_H__
#define __LCD1602_H__#include <reg52.h>//LCD1602 IOÉèÖÃ
#define LCD1602_PORT P0
sbit LCD1602_RS = P2^7;
sbit LCD1602_RW = P2^6;
sbit LCD1602_EN = P2^5;//º¯Êý»òÕß±äÁ¿ÉùÃ÷
extern void LCD1602_delay_ms(unsigned int n);
extern void LCD1602_write_com(unsigned char com);
extern void LCD1602_write_data(unsigned char dat);
extern void LCD1602_write_word(unsigned char *s);
extern void Init_LCD1602();#endif

#ifndef __GPS_H__
#define __GPS_H__#include <reg52.h>
#include "main.h"//º¯Êý»òÕß±äÁ¿ÉùÃ÷
extern void Uart_Init();extern unsigned char RX_Buffer[68];
extern unsigned char RX_Count;
extern unsigned char Hour,Min_High,Min_Low,Sec_High,Sec_Low;
extern unsigned char Month,Day,Month_High, Month_Low,Day_Low ,Day_High, Year_High,Year_Low;
extern unsigned int Year;
extern unsigned char MaxDay;extern bit Flag_GPS_OK;#endif

#ifndef __MAIN_H__
#define __MAIN_H__#include <reg52.h>sbit KEY4 = P1^0;//º¯Êý»òÕß±äÁ¿ÉùÃ÷
extern void Delay_ms(unsigned int n);
extern void Scan_Key();
extern void UTCDate2LocalDate(void);
extern bit IsLeapYear(unsigned int uiYear);
extern unsigned char GetMaxDay(unsigned char Month_Value,unsigned int Year_Value);#endif

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51单片机对GPS卫星信号的解码并通过LCD1602或12864显示

51单片机对GPS卫星信号的解码并通过LCD1602或12864显示相关推荐

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