firebug-cvs

[<do...@pr...>]

Update of /cvsroot/firebug/fireboard/fireboard/sensors/leadtek9546
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv26542

Added Files:
	Makefile leadtek_9546.c 
Removed Files:
	HPLUART1M.nc HPLUARTC1.nc 
Log Message:
c file for dealing with various aspects of checksums and 
programming strings added.  Test code can be written against the
code in this file.

--- NEW FILE: Makefile ---
clean:
	rm -rf *~ *.exe *.bak

--- NEW FILE: leadtek_9546.c ---


#include <stdio.h>
#include <sys/types.h>
#include <string.h>

#include "leadtek_9546.h"


unsigned char 
crc(char * data, int size) {

  unsigned char cs = 0;
  int i;

  //Omit $-character
  for (i=1; i<size; i++) {
    cs = cs ^((unsigned char)data[i]);
  }

  return cs;
}

int main(int argc, char ** argv) {

  char data[] = {"$LTC,1000,0"};
  char data1[] = {"$GPGSV,3,3,11,03,19,314,21,29,19,044,39,02,15,293,24"};
  char data2[] = {"$GPGGA,023129.762,3754.1755,N,12218.2682,W,1,08,1.1,-19.4,M,,,,0000"};

  const uint8_t gps_gga_mask_crc[]     = {"$LTC,NMEA," NMEA_GGA_MASK};
  const uint8_t gps_rmc_mask_crc[]     = {"$LTC,NMEA," NMEA_RMC_MASK};
  const uint8_t gps_syncmode_on_crc[]  = {"$LTC,SYNCMODE,1"};
  const uint8_t gps_syncmode_off_crc[] = {"$LTC,SYNCMODE,0"};

  const uint8_t gps_test_crc[] = {"$LTC,1552,1"};

  printf("string: %s, crc: %x\n",data,crc(data,strlen(data)));
  printf("string: %s, crc: %x\n",data1,crc(data1,strlen(data1)));
  printf("string: %s, crc: %x\n",data2,crc(data2,strlen(data2)));

  printf("string: %s, crc: %x\n",gps_syncmode_off_crc,crc(gps_syncmode_off_crc,strlen(gps_syncmode_off_crc)));
  printf("string: %s, crc: %x\n",gps_test_crc,crc(gps_test_crc,strlen(gps_test_crc)));

  
  return 0;
}



// Will add these in later.
#if 0
/**
 * This is an example for how to parse an NMEA GGA string.
 * It doubles as test code, and can be used in nesc with 
 * minor changes.
 */



#include <stdio.h>

static const unsigned char gga_string[] = ["$GPGGA,200831.748,3754.1771,N,12218.2665,W,1,06,1.2,-0.8,M,,,,0000*34"];

int 
main(int argc, char ** argv) {

  int i;
  unsigned char * p;
   
  
  return 0;
}



int
main(int argc, char ** argv) {

   char nofix[] = {"$GPGGA,205121.168,,,,,9,23,,,M,,,,0000*3F"}; 
   int num_commas,j;

   const char foo[] = {"df" "\n"};


   printf("%s",foo);

   printf("%d\n",'0'-'0');
   printf("%d\n",'1'-'0');
   printf("%d\n",'2'-'0');
   printf("%d\n",'3'-'0');

   j = 0;
   num_commas = 0;
   while (num_commas < 6) {
   
      printf("%c",nofix[j]);
      if (nofix[j] == ',') {
         num_commas++;
      }
      j++; 
   }
   
   printf("\n%c\n",nofix[j]);

   return 0;
}



#include <stdio.h>

int 
main(int argc, char ** argv) {

   unsigned short foo = 13888;
  
   unsigned char bar[] = {"3754.1763"};

   float dec_secs = 0;
 
   printf("cast foo to float: %f\n", (float)foo);

   dec_secs = 10*(bar[2]-'0') +  (bar[3]-'0') + 0.1*(bar[5]-'0') 
            + 0.01*(bar[6]-'0')
            + 0.001*(bar[7]-'0') + 0.0001*(bar[8]-'0');

   printf("dec_secs: %f\n",dec_secs);

   //  Write some test code for packing and
   // extracting NSEW
   /*
      NS = (gga_fields[3][0] == 'N') ? 1 : 0;
      EW = (gga_fields[5][0] == 'W') ? 1 : 0;
      pGGA->NSEWind = EW | (NS<<4); // eg. Status = 000N000E = 00010000
      gga_log_array[10] = pGGA->NSEWind;
   */

   return 0;
}


#endif


--- HPLUART1M.nc DELETED ---

--- HPLUARTC1.nc DELETED ---