/*************************************************/
//項??目：水利數碼通
//文件名：UART.C
//功??能：?串口0、1數據收發處理，軟件串口處理
//作??者：楊世峰
//日??期：2004-03-13
/*************************************************/

#include?“upsd3300.h“
#include?“hardware.h“
#include?“gps.h“
#include?“uart.h“

#include?“string.h“
#include?“const.h“
//////////////////////////////////
//====================變量定義=====================
extern	uchar	idata	ucGpsCommandStatus;//GPS信息處理狀態機
extern	uchar	xdata	ucGPSCommand[8];//GPS命令標識頭
extern	uchar	xdata	ucGPSDataBuff[82];//GPS數據緩存
extern	uchar	xdata	ucCheckSum[2];//GPS命令校驗字節
extern	uchar?idata	ucGPSBuffCnt;
//每月最大天數表
extern	uchar?xdata?GPS_Date[];
extern	uint	idata	unInBufCntComm1;	//緩沖區計數
extern	union?	ByteToFloatOrLong?	xdata?	ByteChang;

///////////////////////////////////
extern	INFO_GPS			xdata?InfoGPS;
extern	INFO_GPS			xdata?NowInfoGPS;//實時gps?信息
extern?	INFO_STAR		xdata?ucSNR[12];
////////////////////////////////////
//=================================================
//GPS數據處理主循環
//=================================================
void??GPS_ProcessNMEA（void）
{
	uchar?idata?uch0;

	while（unInBufCntComm1）
	{
		switch?（ucGpsCommandStatus）
		{
			case?0:
?????????{
				ReadCharComm1（&uch0）;
				if?（uch0==‘$‘）
				{
					ucGpsCommandStatus++;
				}
				break;
			}

?????????case?1:
			{
				ReadCharComm1（&uch0）;
				if?（uch0==‘G‘）
					ucGpsCommandStatus++;
				else
					ucGpsCommandStatus=0;
				break;
			}

			case?2:
			{
				ReadCharComm1（&uch0）;
				if?（uch0==‘P‘）
					ucGpsCommandStatus++;
				else
					ucGpsCommandStatus=0;
				break;
			}

			case?3:
			{
				if（unInBufCntComm1?>=?3）
				{
					ReadCharComm1（&ucGPSCommand[0]）;
					ReadCharComm1（&ucGPSCommand[1]）;
					ReadCharComm1（&ucGPSCommand[2]）;
					ucGPSCommand[3]?=?‘\0‘;
					ucGPSDataBuff[0]?=?‘G‘;
					ucGPSDataBuff[1]?=?‘P‘;
					strcpy（ucGPSDataBuff+2ucGPSCommand）;
					ucGPSBuffCnt?=?5;
					ucGpsCommandStatus++;
				}
				break;
			}

???????	case?4:?//process?command
			{
				if（unInBufCntComm1?					break;
				else
				{
					if（ucGPSBuffCnt>80）
					{
						ucGpsCommandStatus?=?0;
						break;
					}
					ReadCharComm1（ucGPSDataBuff+ucGPSBuffCnt）;
					ReadCharComm1（ucGPSDataBuff+ucGPSBuffCnt+1）;
					if（（ucGPSDataBuff[ucGPSBuffCnt]?==‘\r‘）\
							&&（ucGPSDataBuff[ucGPSBuffCnt+1]?==‘\n‘））
					{
						ucCheckSum[0]?=ucGPSDataBuff[ucGPSBuffCnt-2]?-?0x30;
						ucCheckSum[1]?=ucGPSDataBuff[ucGPSBuffCnt-1]?-?0x30;;
						if（GPS_CheckCommand（））
						{
							ProcessGPSCommand（）;
						}
						ucGpsCommandStatus=0;
						break;
					}
					else
					{
						if（ucGPSDataBuff[ucGPSBuffCnt+1]?==‘\r‘）
							ucGpsCommandStatus++;
					}
					ucGPSBuffCnt+=2;
				}
				break;
????????	}//end?of?case?4
			case?5:
			{
				if（ucGPSBuffCnt>81）
				{
					ucGpsCommandStatus?=?0;
					break;
				}
				ReadCharComm1（ucGPSDataBuff+ucGPSBuffCnt）;
				

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????11665??2008-07-08?14:44??gpsnmea\gps.c

?????文件???????1711??2006-04-29?05:22??gpsnmea\gps.h

?????文件???????6301??2008-07-08?14:43??gpsnmea\uart.c

?????文件???????1068??2006-04-27?16:50??gpsnmea\uart.h

?????文件????????211??2008-07-08?15:16??gpsnmea\說明.txt

?????目錄??????????0??2008-07-08?15:12??gpsnmea

-----------?---------??----------?-----??----

????????????????20956????????????????????6