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| | In the very early shipment to 50 Phase 1 developers, a binary-only program for talking to the the GPS was accidentally included | | In the very early shipment to 50 Phase 1 developers, a binary-only program for talking to the the GPS was accidentally included |
| − | in /home/root/DM2/gps, (and presumably, the same binary would function on a P0 device).
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| − |
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| − | There is an ongoing effort to write a Free Software
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| − | program that could be used instead of this binary-only program. See
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| − | [[Hammerhead/Protocol]] for details and the latest status.
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| − |
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| − | == Binary Daemon GLLIN ==
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| − |
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| − | For those few with the binary driver in the meantime, Pavel Machek
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| − | [http://pavelmachek.livejournal.com/39229.html provides] the
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| − | following script for recording an NMEA stream from the binary program.
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| − |
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| − | #!/bin/sh
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| − | echo 1 > /sys/class/leds/gta01\:vibrator/brightness
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| − | killall gllin cat
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| − | sleep 1
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| − | echo 0 > /sys/class/leds/gta01\:vibrator/brightness
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| − | mknod /tmp/nmeaNP p
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| − | cat /tmp/nmeaNP >> /tmp/gps.nmea &
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| − | /home/root/DM2/gps/gllin -low 5
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| − | /home/root/DM2/gps/gllin -periodic 3
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| − |
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| − | The binary program was compiled to OABI format which now is obsolete as OM2007.2 builds are in EABI format. You can still run the binary with ''chroot''. [[user:Zdanek|Bartek Zdanowski]] wrote an [http://www.openmoko.org.pl/node/55 aticle] how to run GPS receiver. Alternativly ld-linux can be used to do the trick:
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| − |
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| − | ==The ld-linux trick==
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| − |
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| − | you need the following files:
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| − |
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| − | bin/gllin
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| − | bin/gllin.sh
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| − | lib/ld-linux.so.2
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| − | lib/libc.so.6
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| − | lib/libgcc_s.so.1
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| − | lib/libm.so.6
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| − | lib/libnss_dns.so.2
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| − | lib/libnss_files.so.2
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| − | lib/libpthread.so.0
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| − | lib/libresolv.so.2
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| − | lib/librt.so.1
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| − | lib/libstdc++.so.6
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| − | lib/libutil.so.1
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| − |
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| − | the file bin/gllin.sh contains:
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| − |
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| − | #!/bin/sh
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| − | `pwd`/lib/ld-linux.so.2 --library-path `pwd`/lib `pwd`/bin/gllin -low 5
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| − | test -p /tmp/nmeaNP || ( rm -f /tmp/nmeaNP && mknod /tmp/nmeaNP p )
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| − | `pwd`/lib/ld-linux.so.2 --library-path `pwd`/lib `pwd`/bin/gllin -periodic 3
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| − |
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| − | be shure to start at least a `cat /tmp/nmeaNP` somewhere.
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| − |
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| − | ==Strange messages==
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| − |
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| − | the message
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| − |
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| − | Stack size 8864 bytes (9 KB)
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| − |
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| − | means, nobody is reading on the pipe /tmp/nmeaNP, you probably forgot to start the `cat ...`. the message
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| − |
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| − | gllin: early exit(3) in halInit()/681
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| − |
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| − | is issued by the low-level hardware test but gllin works fine afterwords.
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| − |
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| − | == Bluetooth GPS ==
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| − |
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| − | He also [http://pavelmachek.livejournal.com/39659.html succeeded]
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| − | at getting the Neo1973 to act like a bluetooth GPS with the following
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| − | script: (Note that this script has bad problems if you run it more than once. You can get a "time traveling GPS" effect, with the GPS showing you your past position).
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| − |
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| − | #!/bin/sh
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| − | killall rfcomm tail
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| − | mknod /dev/rfcomm0 c 216 0
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| − | echo 1 > /sys/devices/platform/s3c2410-i2c/i2c-0/0-0008/gta01-pm-bt.0/power_on
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| − | sleep 1
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| − | hciconfig hci0 up name linuxgps
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| − | sleep 1
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| − | sdpd
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| − | sleep 1
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| − | sdptool add SP
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| − | (
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| − | while true; do
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| − | rfcomm listen /dev/rfcomm0 1
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| − | sleep 1
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| − | done
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| − | ) &
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| − | (
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| − | while true; do
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| − | tail -f /tmp/gps.nmea > /dev/rfcomm0
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| − | echo 1 > /sys/class/leds/gta01\:vibrator/brightness
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| − | sleep 1
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| − | echo 0 > /sys/class/leds/gta01\:vibrator/brightness
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| − | done
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| − | ) &
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| − |
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| − |
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| − | == Possible GPS programs ==
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| − |
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| − | As people develop more sophisticated GPS applications, please note them here.
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| − |
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| − | Here are some ideas for possibilities:
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| − |
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| − | * Cairo-based mapping
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| − |
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| − | * Routing
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| − |
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| − | * [[Openstreetmap]] logger, (with voice annotations)
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| − |
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| − | * [http://lists.openmoko.org/pipermail/community/2007-July/007252.html collection of ideas]
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| | | | |
| | [[Category:GPS]] | | [[Category:GPS]] |
The Neo1973 device contains an integrated GPS. The particular device
is marketed as an AGPS, and there is some
discussion available as to what significance that "A" might have.
In the very early shipment to 50 Phase 1 developers, a binary-only program for talking to the the GPS was accidentally included
