Garmin GPSMAP 17 Technical Specifications - Page 32

Browse online or download pdf Technical Specifications for Marine GPS System Garmin GPSMAP 17. Garmin GPSMAP 17 40 pages. Gps receiver/antenna
Also for Garmin GPSMAP 17: Installation Instructions Manual (16 pages), Installation Instructions Manual (12 pages), Installation Manual (16 pages), Reference Manual (1 pages), Technical Reference (30 pages), Installation Instructions Manual (17 pages), Installation Instructions Manual (19 pages), Declaration Of Conformity (1 pages), Quick Start Manual (16 pages)

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Garmin GPSMAP 17 Technical Specifications

Sample C Code

DLE and ETX bytes:
Sample C code to receive the two records should filter DLE and ETX bytes as described below:
typedef enum
{
DAT,
DLE,
ETX
} rx_state_type;
/* Declare and initialize static variables */
static char
static int
static rx_state_type rx_state = DAT;
.
.
.
void add_to_que( char data )
{
#define DLE_BYTE 0x10
#define ETX_BYTE 0x03
if ( rx_state == DAT )
{
if ( data == DLE_BYTE )
{
rx_state = DLE;
}
else
{
in_que[ in_que_ptr++ ] = data;
}
}
else if ( rx_state == DLE )
{
if ( data == ETX_BYTE )
{
rx_state = ETX;
}
else
{
rx_state = DAT;
in_que[ in_que_ptr++ ] = data;
}
}
else if ( rx_state == ETX )
{
if ( data == DLE_BYTE )
{
rx_state = DLE;
}
}
if ( in_que_ptr > 255 )
{
in_que_ptr = 0;
}
}
190-00228-20
in_que[ 256 ];
in_que_ptr = 0;
GPS 16/17 Technical Specifications
Page 28
Rev. C