nmea0183-spin's Introduction

nmea0183-spin

This is a P8X32A/Propeller library object for parsing NMEA-0183 sentences

Salient features

GPS Sentence ID parsing (GGA, GSA, GSV, RMC, VTG)
Talker ID parsing (L, N, P)
Sentence checksum verification
GGA, RMC: Position parsing (extract latitude as degrees minutes DDMMMMMM, longitude DDDMMMMMM - in whole or in part)
GSA: Position fix status, dilution of precision status (HDOP, VDOP, PDOP)
GGA, RMC: Time and date parsing (extract time from a sentence as any of: HHMMSS, HH, MM, SS)
VTG, RMC: Speed over ground (knots), VTG: km/h
VTG: Course over ground (magnetic)
VTG, RMC: Course over ground (true)
AIS sentence parsing (VDM - preliminary, very limited)

Requirements

Any source of NMEA-0183 sentences (including, but not limited to a GPS receiver)
Buffer of (typ.) 81 bytes in length containing the sentence to be parsed

Compiler Compatibility

Processor	Language	Compiler	Backend	Status
P1	SPIN1	FlexSpin (5.9.13-beta)	Bytecode	OK
P1	SPIN1	FlexSpin (5.9.13-beta)	Native code	OK
P1	SPIN1	OpenSpin (1.00.81)	Bytecode	Untested (deprecated)
P2	SPIN2	FlexSpin (5.9.13-beta)	NuCode	OK
P2	SPIN2	FlexSpin (5.9.13-beta)	Native code	OK
P1	SPIN1	Brad's Spin Tool (any)	Bytecode	Unsupported
P1, P2	SPIN1, 2	Propeller Tool (any)	Bytecode	Unsupported
P1, P2	SPIN1, 2	PNut (any)	Bytecode	Unsupported

Limitations

Library is very early in development and may malfunction, or outright fail to build

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nmea0183-spin's Issues

Add support for MGRS

Research conversion methods and add support for reading position in MGRS format.

Add RTC demo

Add a demo that uses the emulated RTC driver in conjunction with a GPS receiver to set and display the time, to demonstrate setting 'system' time in an application.