gps.h

51单片机的c语言GPS解码程序

//对变量的每一行都应标明其具体的含义。
#ifndef _GPS_H
#define _GPS_H
#include "public.h"
//GPS接收缓冲大小 预留发送缓冲
#define GPS_RX_SIZE                 1000
#define AVMAX                       100

//GPS结构
typedef struct{
	unsigned char avData;		//定位有效
	unsigned long time;			//秒
	unsigned char year;			//年
	unsigned char month;		//月
	unsigned char day;			//日
	unsigned char hour;			//时
	unsigned char minute;		//分
	unsigned char second;		//秒
	unsigned long longitude;	//经度
	unsigned long latitude;		//纬度
	unsigned long altitude;		//高度
	unsigned int  speed;		//速度
	unsigned int  direction;	//方向
}st_GpsData;

extern st_GpsData  xdata GpsData;
extern UCHAR xdata gGpsOk;

extern unsigned char xdata gGpsReceiveFullFrame;//是否接收了一个完整的数据包
extern unsigned char xdata mGpsFrameBuf[100];//GPS解码缓冲区
extern unsigned char  xdata mReturn[31][11];
extern unsigned char xdata mGpsFramePoint;//GPS解码缓冲区指针
extern unsigned char xdata gGpsActiveNum;//GPS超时计数器，收到数据后只置为10 表示10秒钟没有收到数据就进行复位
//extern unsigned char xdata gGpsSendBuffer[200];
extern unsigned char xdata  gGpsUartWrite;//gps发送缓冲区写指针
extern unsigned char xdata  gGpsUartRead;//gps发送缓冲区读指针
extern unsigned char xdata gGpsUartNull;//Gps发送缓冲区是否空
//extern unsigned char xdata gGpsReadPoint;//Gps接收缓冲区读指针
//extern unsigned char xdata gGpsWritePoint;//Gps接收缓冲区写指针
//extern unsigned char xdata gGpsReceiveBuf[GPS_RX_SIZE + 2 ];//receive buffer max length 2048
extern unsigned char xdata gGpsReceiveHead;//是否收到$
extern unsigned char xdata gGpsSendLen;
extern unsigned char xdata gGpsSendCnt;



extern UCHAR xdata gGpsNoSignalFlag;
extern unsigned char xdata gGpsRxBuffer[GPS_RX_SIZE ];
extern struct QUEUE_STRUCT xdata gGpsRxQ;
 void InitGpsVar();
 void AnalyGpsData();
#endif