GARMIN GPS Interface Specification

typedef struct
{
byte nmbr; /* route number */
char cmnt[20]; /* comment */
} D201_Rte_Hdr_Type;
The “nmbr” member must be unique for each route. Some GPS units require a unique “cmnt” for each route, and
other GPS units do not. There is no mechanism available for the Host to determine whether a GPS requires a unique
“cmnt”, and the Host must be prepared to receive unique or non-unique “cmnt” from the GPS.
7.5.19. D202_Rte_Hdr_Type
Example products: StreetPilot.
typedef struct
{
/* char rte_ident[]; null-terminated string */
} D202_Rte_Hdr_Type;
7.5.20. D210_Rte_Link_Type
Example products: GPSMAP 162/168, eMap, GPSMAP 295.
typedef struct
{
word class; /* link class; see below */
byte subclass[18]; /* subclass */
/* char ident[]; variable length string */
};
The “class” member can be one of the following values:
enum
{
line = 0,
link = 1,
net = 2,
direct = 3,
snap
= 0xFF
};
The “ident” member has a maximum length of 51 characters, including the terminating NULL.
If “class” is set to “direct” or “snap”, subclass should be set to its default value of 0x0000 0x00000000 0xFFFFFFFF
0xFFFFFFFF 0xFFFFFFFF.
7.5.21. D300_Trk_Point_Type
Example products: all products unless otherwise noted.
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