Binary File Format - Berkeley Varitronics Systems Fox Manual

Binary File Format

The following are the PC save (serial) and PCMCIA structures for the FOX V1.3 firware. The only change from v1.2 is the for-
mat of the GPS data and the addition of GPS velocity. Lat and Lon values are now saved as milliarcseconds (32 bit word - 4
bytes).
SERIAL PORT DATA HEADER
typedef struct pcs_head
{
BYTE pcscod; /* measurement code */
WORD pcsfvn; // Firmware Version #
char pcssn[6]; // Serial Number
BYTE pcsnavs; //* navigation status */
BYTE gpslat[4]; // Latitude (milliarcseconds)
BYTE gpslon[4]; // Longitude (milliarcseconds)
BYTE gpsalt[4]; // Altitude
BYTE gpsvel[4]; // Velocity (cm/s)
BYTE gpstim[3]; /* @ gps time */
BYTE pcsmxy; /* == 0 means user marker,odometer */
/* != 0 means x-y coordinates */
WORD pcsmm; /* current mile marker or Y coordinate */
WORD pcsmrk; /* current user marker # or X coordinate */
WORD pcsclo; // rx info - chan lo
WORD pcschi; // chan hi
WORD pcsfm; // base freq MHz
WORD pcsfk; // base freq KHz*10
WORD pcsfs; // step in KHz*10
BYTE pcsrxt; // receiver type code --- IGNORE
BYTE pcssec; /* real time */
BYTE pcsmin;
BYTE pcshr;
BYTE pcsday;
BYTE pcsmon;
BYTE pcsyr;
BYTE pcsndr;
}PCS_HEAD;
/* nav status flags */
#define GPSOK 0x80
#define GPSOFF 0x40
#define GPSINST 0x20
#define GPSTYPE 0x10
#define DIFLOCK 0x08
/* bits 0-3 == # satellites */
note: ignore gps type, gps installed, diflock (bits 3,4,5)
/* number of data records */
/* gps ok (locked) */
/* gps off */
/* gps installed */
/* set == MOTOROLA gps installed */
/* clr == TRIMBLE gps installed */
/* set == DIFFERENTIAL LOCK */
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