HS192L/USER/Apps/GpsData.c

#include "includes.h"

SUT_GPS_INF sutGpsInfo;
SUT_MESS sutMess;
const unsigned short GPS_TimeTable[GPS_TABLE_NUM]={0,5,10,15,30,60,120,300};
static unsigned char gpsInit=0;
void GPSRestart(void){
	gpsInit=1;
}
void GPSStop(void){
	gpsInit=10;
}
void GPSInit(void){
	static unsigned int tick;
	GPIO_InitTypeDef GPIO_InitStructure;
	if(gpsInit==0) return;
	else if(gpsInit==1){
		RCC_APB2PeriphClockCmd( RCC_APB2Periph_GPIOB , ENABLE); 
		GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
		GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
		GPIO_InitStructure.GPIO_Pin = GPS_PWREN_PIN;
		GPIO_Init(GPS_PWREN_PORT, &GPIO_InitStructure);
		SlwTrace(INF,"GPS Down...",1);
		GPS_PWREN_LOW;
		sutGpsInfo.isGpsWork=0;
		sutGpsInfo.isGpsValid=0;
		sutGpsInfo.GpsInactiveCt=0;
		uTimerStart(&tick, 50);
		gpsInit=2;
	}else if(gpsInit==2){
		if(uTimerExpired(&tick)){
			GPS_PWREN_HIGH;
			SlwTrace(INF,"GPS Start Done",1);
			gpsInit=0;
		}
	}else if(gpsInit==10){
		GPS_PWREN_LOW;
		SlwTrace(INF,"GPS CloseDown",1);
		sutGpsInfo.isGpsWork=0;
		sutGpsInfo.isGpsValid=0;
		sutGpsInfo.GpsInactiveCt=0;
		gpsInit=0;
	}
}



static void GpsDataProcess(void);
PT_THREAD (ptGpsTask(struct pt *pt)){
	static timer_t ptTimer;
	GPSInit();
	PT_BEGIN(pt);
	while(1){
		GpsDataProcess();
		//GpsInternalChange();
		PTTimerStart(&pt_timerPool, &ptTimer, 50);//GPS数据1秒才出一条RMC,0.5秒处理一次足够了 //50
	  PT_WAIT_UNTIL(pt, PTTimerIsExpired(&ptTimer));
	}
	PT_END(pt);
}

void GpsInternalChange()
{
	static unsigned char cnt=2;
	static unsigned char last_uiGpsStat=2;
	
	if(last_uiGpsStat!=g_uiGpsStat){
			cnt=0;
		last_uiGpsStat=g_uiGpsStat;
	}
	switch(cnt)
			{
				case 0:
					if(g_uiGpsStat)ModemSendAt("AT+GPS=\"ON\"\r\n");
					else ModemSendAt("AT+GPS=\"OFF\"\r\n");
					cnt=1;
						break;
				case 1:
					if(g_uiGpsStat)ModemSendAt("AT+GPSANT=1\r\n");
						else ModemSendAt("AT+GPSANT=0\r\n");
					cnt=2;
				break;
			}
}



static void GpsDataProcess(void)
{
char *nema=(char *)RxBuffer3;
	short len;
	if(g_usUart3RecvLen){
		len=strlen(&nema[7]);
		if(len>(UART3_RX_BUFFER_SIZE-10)){
			SlwTrace(INF,"UART2RECV OVER!",1);
			return;
		}
		if(g_uiGpsStat==0){
			g_usUart3RecvLen=0;
			return;
		}
		process_gps_data(&nema[7],len);
		sutGpsInfo.isGpsWork=1;
		sutGpsInfo.GpsInactiveCt=0;
		////////////////////////////////////////////////
		g_usUart3RecvLen=0;
	}
	
}





static unsigned char translate_digitAscii_to_bcd(char *ascii_number, unsigned char len, char *bcd_number)
{
	int i, j;
	char temp[10] = "";  /* extra + and NULL */
	unsigned char bcd_index = 0;          /* Index into output bcd_number */
	
	int num_len = len;
	
	
	/* Translate or skip over invalid characters */
	for (i = 0, j = 0; i < num_len; i++)
	{
		temp[j++] = ascii_number[i] & 0x0F;
	}
	
	ascii_number[len] = 0;
	/* Now that temp has the bcd codes in natural order... Squish them together
	* and reverse the order per bcd coding.
	*/
	for (i = 0; i < j; i+=2)
		bcd_number[bcd_index++] = ((char)(temp[i] << 4)) | temp[i+1];
	
	bcd_number[len] = 0;
	
	return 0;
}

/*=====================================
UTC time:hms   status       latitue         north?    longitue          east?   速度(节)   方位角  UTC time      磁偏角      方向   模式      checksum
$GPRMC    hhmmss.sss      A/V      ddmm.mmmm   N/S   dddmm.mmmm  E/W      speed             aspect        ddmmyy      000-180            E/W        A/D/E/N     *hh
For example: $GPRMC,024813.640,A,3158.4608,N,11848.3737,E,10.05,324.27,150706,,,A*50
*/

#define GPRMC_UTC1_TOKEN_INDEX                   0
#define GPRMC_STATUS_TOKEN_INDEX               1
#define GPRMC_LATITUE_TOKEN_INDEX              2
#define GPRMC_NORTH_TOKEN_INDEX                 3
#define GPRMC_longitue_TOKEN_INDEX               4
#define GPRMC_EAST_TOKEN_INDEX                    5
#define GPRMC_SPEED_TOKEN_INDEX                  6
#define GPRMC_ASPECT_TOKEN_INDEX                7
#define GPRMC_UTC2_TOKEN_INDEX                    8

/*************************************************************************************
*
**************************************************************************************/
 void process_gps_data(char *buf,uint32_t size)   //这里的buf就是从GPRMC,后开始
{
	char tmp_char[16] = {0};
	char  bcd_tmp[8] = {0};
	char *token[16] = {NULL};
	char size_each_token[16] = {0};
    unsigned char hh,hl;
	unsigned char token_index = 0;
	
	int i = 0;
	int index = 0;
	int dig_bit_num = 0;
	int ptr_each = 0;
	unsigned short speed;
	unsigned short aspect;

//	char* g_cGetlongitude=NULL;
//  char* g_cGetlatitude=NULL;

	double speed_jie = 0.0;
	token[token_index] = buf;

	//RunMake(THIS_FILE_ID);	
	while(index < size )
	{
		if(buf[index] == ',')
		{
			size_each_token[token_index] = ptr_each;
			if(ptr_each == 0)
				token[token_index] = NULL;
			//*(token[token_index] + ptr_each) = 0; //
			
			ptr_each = 0;
			token_index++;
			token[token_index] = buf+index+1;  //skip this ',' 
			if(*(token[token_index]+1) == '*')
			{
				size_each_token[token_index] = 1;	     //cut of *hh\r\n
			}        
		}
		else
		{
			ptr_each++;    
		}
		index++;
	}
	//RunMake(THIS_FILE_ID);
   	
	//UTC time:hms    
	if(token[GPRMC_UTC1_TOKEN_INDEX])   
	{
		strncpy((char*)tmp_char,(char*)token[0],size_each_token[0]);
		translate_digitAscii_to_bcd(tmp_char,6,bcd_tmp);  //去掉.xx
		//小时需要加8 因为北京是东8区
		hl=bcd_tmp[0]&0x0f;
		hh=bcd_tmp[0]&0xf0;
		hl+=8;
		if(hl>=10){
			hl-=10;
			hh+=0x10;
			//if(hh>0x20)hh=0;  处理GPS时间问题   V520_P1
		}
	    sutGpsInfo.hour=(hh | hl);

		sutGpsInfo.minu = bcd_tmp[1];
		sutGpsInfo.sec = bcd_tmp[2];
	}  	
	//RunMake(THIS_FILE_ID);
	//Fix status
	if(token[GPRMC_STATUS_TOKEN_INDEX])   
	{
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		strncpy((char*)tmp_char,(char*)token[1],size_each_token[1]);
		//if(*tmp_char == 'A'){
		if(*tmp_char == 'A'){
			sutGpsInfo.isGpsValid = 1;
		}else{
			sutGpsInfo.isGpsValid = 0;	
		}
	}  	   
	//RunMake(THIS_FILE_ID);	
	if(sutGpsInfo.isGpsValid == 0)return;
    //latitude 纬度
	/*=====================================
	UTC time:hms   status       latitue         north?    longitue          east?   速度(节)   方位角  UTC time      磁偏角      方向   模式      checksum
	$GPRMC    hhmmss.ss      A/V      ddmm.mmmm   N/S   dddmm.mmmm  E/W      speed             aspect        ddmmyy      000-180            E/W        A/D/E/N     *hh
	For example: $GPRMC,024813.640,A,3158.4608,N,11848.3737,E,010.5,324.7,150706,,,A*50
	*/
	if(token[GPRMC_LATITUE_TOKEN_INDEX])   
	{
		//RunMake(THIS_FILE_ID);
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		memset(bcd_tmp , 0 ,sizeof(bcd_tmp));    
		strncpy((char*)(tmp_char+1),(char*)token[2],size_each_token[2]);
		tmp_char[0] = '0';
		//RunMake(THIS_FILE_ID);
		for(i = 5; i < 8;i++)
			tmp_char[i] = tmp_char[i+1];
		tmp_char[8] = 0;  //小数点后面去掉最后1位
		translate_digitAscii_to_bcd(tmp_char,8,bcd_tmp);  //去掉.xx
        //North or south    
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		if(token[GPRMC_NORTH_TOKEN_INDEX])
		{
			strncpy((char*)tmp_char,(char*)token[3],size_each_token[3]);
//			if(*tmp_char == 'S')
//				bcd_tmp[0] |= 0x80;
			sutGpsInfo.NSFlag=*tmp_char;
			sutGpsInfo.latitue = (bcd_tmp[3] | (bcd_tmp[2] << 8) |(bcd_tmp[1] << 16) |(bcd_tmp[0] << 24));
		}
		//RunMake(THIS_FILE_ID);
	}
	
	//longitude 经度
	if(token[GPRMC_longitue_TOKEN_INDEX])   
	{
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		memset(bcd_tmp , 0 ,sizeof(bcd_tmp));    
		//RunMake(THIS_FILE_ID);
		strncpy((char*)tmp_char,(char*)token[4],size_each_token[4]);
		for(i = 5; i < 8;i++)
			tmp_char[i] = tmp_char[i+1];
		tmp_char[8] = 0;
		translate_digitAscii_to_bcd(tmp_char,8,bcd_tmp);  //去掉.xx
		//RunMake(THIS_FILE_ID);	
        //east or west    
        if(token[GPRMC_EAST_TOKEN_INDEX])
        {
			memset(tmp_char , 0 ,sizeof(tmp_char));    
			strncpy((char*)tmp_char,(char*)token[5],size_each_token[5]);
//			if(*tmp_char == 'W')
//				bcd_tmp[0] |= 0x80;
			sutGpsInfo.EWFlag=*tmp_char;
			sutGpsInfo.longitue = (bcd_tmp[3] | (bcd_tmp[2] << 8) |(bcd_tmp[1] << 16) |(bcd_tmp[0] << 24));   
        }
	}
	
	//Speed
	if(token[GPRMC_SPEED_TOKEN_INDEX])   
	{
		//RunMake(THIS_FILE_ID);
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		strncpy((char*)tmp_char,(char*)token[GPRMC_SPEED_TOKEN_INDEX],size_each_token[GPRMC_SPEED_TOKEN_INDEX]);
              index = 0;
	       while(index < size_each_token[GPRMC_SPEED_TOKEN_INDEX])
	       {
	         if(tmp_char[index] == '.')
			 	break;
                index++;
	       }
		dig_bit_num = size_each_token[GPRMC_SPEED_TOKEN_INDEX]-index-1;
              //这里，index代表小数点前有多少位,dig_bit_num代表小数点后面有多少位
		//RunMake(THIS_FILE_ID);
              //ol_debug("dig_bit_num:%d,all len:%d",dig_bit_num,size_each_token[GPRMC_SPEED_TOKEN_INDEX]);
#if 0
		if(index == 3)
		{
		  speed_jie = (tmp_char[0]-0x30)*100
			+ (tmp_char[1]-0x30)*10
			+ (tmp_char[2]-0x30);		
		}
              else if(index == 2)
		{
		  speed_jie = (tmp_char[0]-0x30)*10
			+ (tmp_char[1]-0x30);		
		}
	       else
		  speed_jie = (tmp_char[0]-0x30);

              if(dig_bit_num > 0)
		  speed_jie += (tmp_char[index+1]-0x30)*0.1;
#else
	  speed_jie = atoi(tmp_char);
		if(dig_bit_num>0)
			speed_jie += (tmp_char[index+1]-0x30)*0.1;
#endif
		speed = (unsigned short)(speed_jie*1.852);   
		
		sutGpsInfo.speed = ( ((speed/100)<<8) | (((speed /10)%10)<<4) | (speed %10)  );   
		//ol_debug("speed_jie to speed:%d,xinan speed:%d",speed,sutGpsInfo.speed);
	}   
	//RunMake(THIS_FILE_ID);
	//Aspect 方向
	if(token[GPRMC_ASPECT_TOKEN_INDEX])   
	{
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		strncpy((char*)tmp_char,(char*)token[GPRMC_ASPECT_TOKEN_INDEX],size_each_token[GPRMC_ASPECT_TOKEN_INDEX]);
		#if 0
		aspect = (unsigned short)((tmp_char[0]-0x30)*100
			+ (tmp_char[1]-0x30)*10
			+ (tmp_char[2]-0x30));
		
		//aspect = 150;
		sutGpsInfo.aspect= ( ((aspect/100) << 8) | (((aspect /10)%10)<<4) | (aspect %10) );
		
		#else
		aspect=atoi(tmp_char);
		aspect %=360;
		sutGpsInfo.aspect= ( ((aspect/100) << 8) | (((aspect /10)%10)<<4) | (aspect %10) );
		#endif
	}      
	//RunMake(THIS_FILE_ID);
	//UTC2
	if(token[GPRMC_UTC2_TOKEN_INDEX])   
	{
		memset(tmp_char , 0 ,sizeof(tmp_char));    
		memset(bcd_tmp , 0 ,sizeof(bcd_tmp));    	   
		strncpy((char*)tmp_char,(char*)token[GPRMC_UTC2_TOKEN_INDEX],size_each_token[GPRMC_UTC2_TOKEN_INDEX]);
		translate_digitAscii_to_bcd(tmp_char,6,bcd_tmp);  
		
		sutGpsInfo.day = bcd_tmp[0];
		sutGpsInfo.month= bcd_tmp[1];
		sutGpsInfo.year = bcd_tmp[2];
    }

}