HS NMEA GPS C Source Library

HS NMEA GPS provides access to a Global Positioning System (GPS) receiver via a serial communications port
HS NMEA GPS is a useful and reliable software library in C which provides a PC-based user application with access to a Global Positioning System (GPS) receiver via a serial communications port. HS NMEA GPS continuously receives navigational information from the receiver according to NMEA-183 (National Marine Electronics Association, Interface Standard 0183). HS NMEA GPS library will operate with any NMEA-183 compliant receiver with serial RS232 interface.

HS GPS library continuously reads asynchronous data stream from a serial port and analyses the information to recognize and decode NMEA-183 Protocol sentences. After each message is received it is checked for integrity by comparing the received and the calculated checksum. The NMEA sentence fields are then converted from ASCII values into C structure variables and passed up to user application code.

Main features of HS NMEA GPS C Source Library:

Interfaces a GPS receiver over COM ports COM1 - COM8

Decodes most commonly used NMEA sentences from a GPS receiver:

GGA - Global Positioning System Fix Data

GLL - Geographic Position

GSA - DOP and Active Satellites

GSV - Satellites in View

RMC - Recommended Minimum Specific GNSS Data

VTG - Course over Ground and Ground Speed

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