Garmin GPS 17 Series Spécifications techniques - Page 29
Parcourez en ligne ou téléchargez le pdf Spécifications techniques pour {nom_de_la_catégorie} Garmin GPS 17 Series. Garmin GPS 17 Series 37 pages. Technical specifications
Également pour Garmin GPS 17 Series : Manuel d'instructions d'installation (16 pages), Manuel d'instructions d'installation (17 pages), Manuel d'instructions d'installation (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