Gps-debug
From University of Washington - Ubicomp Research Page
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-debuggps-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
