Gps-debug

gps-debug

• msp/src/gps-debug/gps-debug.c
• linux download (xscale)
• linux download (x86)
• currently not available for windows

The gps-debug is a program monitors the GPS data stream, prints out verbose status information about the GPS unit, and sets the tri-color LED on the MSB to indicate the GPS status. This program only works with SiRF GPS modules using the binary protocol. The debugging output is useful only if you have some knowledge of the SiRF binary protocol and how GPS works.

usage

Command line format

gps-debug

gps-debug has no options.

LED colors

Color	Status
Blinking Red	No recent communication with the GPS unit.
Red	Communication OK, but no GPS lock
Cyan	2D GPS Lock
Green	3D GPS lock
Blue	Dead-reckoning

Example output

Measured Tracking Data:
	GPS Week:	416
	ToW:	428330.00 s
	Chans:	12
	SVid:	8
		Azimuth:	99.0
		Elev.:	69.0
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK EPH-AVAIL 

	SVid:	28
		Azimuth:	276.0
		Elev.:	80.5
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK EPH-AVAIL 

	SVid:	25
		Azimuth:	118.5
		Elev.:	22.0
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK EPH-AVAIL 

	SVid:	27
		Azimuth:	115.5
		Elev.:	44.5
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK EPH-AVAIL 

	SVid:	11
		Azimuth:	99.0
		Elev.:	17.5
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK 

	SVid:	17
		Azimuth:	183.0
		Elev.:	29.5
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK EPH-AVAIL 

	SVid:	19
		Azimuth:	43.5
		Elev.:	21.0
		Flags:	ACQ-OK ICPV BITSYNC SUBSYNC PULLIN CODELOCK 

	SVid:	0
		Azimuth:	0.0
		Elev.:	0.0
		Flags:	

	SVid:	29
		Azimuth:	289.5
		Elev.:	47.5
		Flags:	ACQ-OK BITSYNC SUBSYNC CODELOCK 

	SVid:	0
		Azimuth:	0.0
		Elev.:	0.0
		Flags:	

	SVid:	0
		Azimuth:	0.0
		Elev.:	0.0
		Flags:	

	SVid:	0
		Azimuth:	0.0
		Elev.:	0.0
		Flags:	

Measured Navigation Data:
	X:	-2300370 m
	Y:	-3638057 m
	Z:	4691023 m
	X vel.:	8191.375
	Y vel.:	0.000
	Z vel.:	8191.625
	Flags:	ALTMODE0 GPS-ONLY-NAV VALIDATED ALTHOLD 
	Pos. Mode:	>3-SV solution (Kalman filter)
	HDOP:	4.4
	GPS Week:	416
	ToW:	428339.00 s
	SVs:	5

Clock Status
	GPS Week:	1440
	ToW:	428339.00 s
	SVs:	5
	Drift:	93940 Hz
	Bias:	4747521 ns
	Est. Time:	428338999 ms