Garmin GPS 17 Series Technical Specifications - Page 29
Browse online or download pdf Technical Specifications for Marine GPS System Garmin GPS 17 Series. Garmin GPS 17 Series 37 pages. Technical specifications
Also for Garmin GPS 17 Series: Installation Instructions Manual (16 pages), Installation Instructions Manual (17 pages), Installation Instructions Manual (19 pages)
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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;
}
}
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in_que[ 256 ];
in_que_ptr = 0;
GPS 16/17 Technical Specifications
Page 25
Rev. A