• The GPS toolkit supports many different GPS receivers from various manufacturers. Some of the features specific to the receiver type have special methods to control them. These are noted in the documentation.

• The receiver type is different than the protocol. Several receivers may share the same protocol

typedef enum {
  GPSPROTOCOL_NMEA = 0,
  GPSPROTOCOL_ROCKWELL,
  GPSPROTOCOL_SIRF,
  GPSPROTOCOL_JRC,
  GPSPROTOCOL_NAVICOM,
  GPSPROTOCOL_SONY,
  GPSPROTOCOL_GARMIN,
  GPSPROTOCOL_UNKNOWN
} GPSPROTOCOL;