Howto Test Your GPS with agpsui - Revision history

Glenn: -cat

2009-07-19T09:15:34Z

-cat

Glenn: /* Overview */ linkchg

2009-07-18T12:38:37Z

‎Overview: linkchg

Phobie: /* Overview */ bad date format

2008-10-08T21:06:57Z

‎Overview: bad date format

Shashank: /* Howto */

2008-09-20T07:36:57Z

‎Howto

Shashank: /* Howto */ Just some formatting

2008-09-20T05:30:15Z

‎Howto: Just some formatting

Shashank at 04:07, 20 September 2008

2008-09-20T04:07:13Z

Shashank at 04:03, 20 September 2008

2008-09-20T04:03:00Z

Shashank at 04:01, 20 September 2008

2008-09-20T04:01:27Z

Kempelen: -Guides, -Hardware, +Advanced End User

2008-09-12T20:48:15Z

-Guides, -Hardware, +Advanced End User

Sledge: ipk->opk

2008-09-11T22:58:18Z

ipk->opk

← Older revision		Revision as of 09:15, 19 July 2009
Line 96:		Line 96:
	[[Category:GPS]]		[[Category:GPS]]
	[[Category:Neo FreeRunner Hardware]]		[[Category:Neo FreeRunner Hardware]]
−	~~[[Category:Advanced End User]]~~

@@ Line 3: / Line 3: @@
 Some FreeRunner GPSs appear to be insensitive, taking a long time, or not obtaining a fix at all, even in ideal condtions.
-There is an issue where the memory clock for the SD Card interferes with the internal GPS antenna [http://www.openmoko.org/wiki/GPS_Problems GPS Problem].  A software fix is well underway and first iterations of the it appear in releases of OM2007.2 on or after 2008-07-22.  Either flash a version with the fixes or else please remove the SD Card while performing the test.  Obtaining a fix took well under 1 minute with the card removed and also with the software fix.
+There is an issue where the memory clock for the SD Card interferes with the internal GPS antenna [[GPS_Problems|GPS Problem]].  A software fix is well underway and first iterations of the it appear in releases of OM2007.2 on or after 2008-07-22.  Either flash a version with the fixes or else please remove the SD Card while performing the test.  Obtaining a fix took well under 1 minute with the card removed and also with the software fix.
 There was a report of a [http://wiki.openmoko.org/wiki/FreeRunner_GPS_antenna_repair_SOP bad solder joint] between the GPS antenna connector and the FreeRunner main PCB but it is very unlikely that your FreeRunner has this situation.

@@ Line 3: / Line 3: @@
 Some FreeRunner GPSs appear to be insensitive, taking a long time, or not obtaining a fix at all, even in ideal condtions.
-There is an issue where the memory clock for the SD Card interferes with the internal GPS antenna [http://www.openmoko.org/wiki/GPS_Problems GPS Problem].  A software fix is well underway and first iterations of the it appear in releases of OM2007.2 on or after 7-22-2008.  Either flash a version with the fixes or else please remove the SD Card while performing the test.  Obtaining a fix took well under 1 minute with the card removed and also with the software fix.
+There is an issue where the memory clock for the SD Card interferes with the internal GPS antenna [http://www.openmoko.org/wiki/GPS_Problems GPS Problem].  A software fix is well underway and first iterations of the it appear in releases of OM2007.2 on or after 2008-07-22.  Either flash a version with the fixes or else please remove the SD Card while performing the test.  Obtaining a fix took well under 1 minute with the card removed and also with the software fix.
 There was a report of a [http://wiki.openmoko.org/wiki/FreeRunner_GPS_antenna_repair_SOP bad solder joint] between the GPS antenna connector and the FreeRunner main PCB but it is very unlikely that your FreeRunner has this situation.

@@ Line 80: / Line 80: @@
 *9. After having spent twidling your thumbs or reading a good book for 30 minutes you get to press the "dBm" button to translate those nasty dB.Hz into goodness dBm signals. If you've gotten FFix some of the blue blue bars has a nice black thing on the bottom. And on top of screen above each bar there are two numbers, the top denoting the maximum signal you got from each satelite and the lower number the average signalstrength.
-*10. If you haven't managed to get a FFIX your either doing something wrong or your one of those unlucky guys (gals) with a bad solder or something else that probably requires shipping the phone back to your supplier/openmoko.If you got only 3-4 satelites and had a lousy reception (say -150 to -160 dBm) you /might/ have a faulty freerunner but you should try again somewhere else at another time of the day just to make sure. If you had a lousy reception but did get a FFix, try again somewhere else to se if you can improve your record.  If you on the other hand found several satelites( +5) and had quite a good reception (maybe > -145 dBm ? ) the you probably has a working phone.Now, I'm not a radio or wireless engineer, so any numbers in dBm should be taken with a grain of salt. But the main thing is that you followed the basic instruction and did a thorough scientific test! You did Science!
+*10. If you haven't managed to get a FFIX your either doing something wrong or your one of those unlucky guys (gals) with a bad solder or something else that probably requires shipping the phone back to your supplier/openmoko.
 *11. Now report any anomalities to the apropriate mailinglists or the guys that told you to read this howto.

@@ Line 30: / Line 30: @@
 == Howto ==
-*1. Assuming you have a fresh-from-the-factory freerunner, first get some
+*1. Assuming you have a fresh-from-the-factory freerunner, first get some basic networking configured. this is beyond the scope of this howto.
 basic networking configured. this is beyond the scope of this howto.
-*2. ssh to the freerunner :
+*2. ssh to the freerunner:
   ssh root@192.168.0.202
 *3a. If you have a working wifi or usb network:
@@ Line 38: / Line 38: @@
 ( Ignore all warnings about missing signature files, the
 openmoko repository haven't got any at the moment.)
-*3b. Or if your doing this the basic way, download openmoko-agpsui and
+*3b. Or if your doing this the basic way, download openmoko-agpsui and then transfer to your freerunner:
 then transfer to your freerunner:
   wget http://downloads.openmoko.org/repository/Om2008.8/armv4t/openmoko-agpsui_*.opk
   scp openmoko-agpsui_*.opk root@192.168.0.202:/home/root/.
 *4. Install the package openmoko-agpsui:
   opkg install openmoko-agpsui
 or
   opkg install openmoko-agpsui_*.opk
 *5. After having completed all these steps sucessfully your ready to
-test your freerunner.
+*5. After having completed all these steps sucessfully your ready to test your freerunner. Charge your battery to full capacity (can't hurt), wait for a clear weather and then check out places you can visit. The ideal place is in the middle of nowhere, but the next best thing is a area with clear view of the sky and no towering foliage or buildings nearby. Nice weather is a must have because you don't want your shiny freerunner to get soaked do you?
 Charge your battery to full capacity (can't hurt), wait for a clear
-weather and then check out places you can visit. The ideal place is
+*6. Find a place where your freerunner can sit on a stable surface for at least 30 minutes without being molested, fondled or even touched. Ideally the FR it should sit inside a (empty) ceramic cup pointing upwards for maximum coverage. Second best is to leave the freerunner with the screen facing upwards, preferably with the top of the freerunner facing northish. (Not a requirement, just trying to be scientific. ;) )
 in the middle of nowhere, but the next best thing is a area with
 clear view of the sky and no towering foliage or buildings nearby.
 Nice weather is a must have because you don't want your shiny
 freerunner to get soaked do you?
 *6. Find a place where your freerunner can sit on a stable surface for at least 30 minutes without being molested, fondled or even touched.
 Ideally the FR it should sit inside a (empty) ceramic cup pointing upwards for maximum coverage. Second best is to leave the freerunner with the screen facing upwards, preferably with
 the top of the freerunner facing northish. (Not a requirement, just
 trying to be scientific. ;) )
 *7. on the freerunner Graphical User Interface you should find a program
 called "Openmoko AGPS UI". Run this program.
@@ Line 82: / Line 75: @@
 ::	those who can read NEMAish, not so interesting for the rest of
 ::	us.
-*8. Now press "Power on" and then "SS", then leave the FreeRunner in a vertical position for  _at least 30 minutes without moving or
-touching it_. (a large mug works well as a stand) Do not stand over it either, your blocking those precious
+*8. Now press "Power on" and then "SS", then leave the FreeRunner in a vertical position for  _''at least 30 minutes without moving or touching it''_. (a large mug works well as a stand) Do not stand over it either, your blocking those precious satelite signals! (GPS runs at ~ 1,2-1,5 Ghz, this is a weak signal with a wavelength of 20cm, now imagine godzilla (you) smashing them)
 satelite signals! ( GPS runs at ~ 1,2-1,5 Ghz, this is a weak signal
-with a wavelength of 20cm, now imagine
+*9. After having spent twidling your thumbs or reading a good book for 30 minutes you get to press the "dBm" button to translate those nasty dB.Hz into goodness dBm signals. If you've gotten FFix some of the blue blue bars has a nice black thing on the bottom. And on top of screen above each bar there are two numbers, the top denoting the maximum signal you got from each satelite and the lower number the average signalstrength.
-godzilla (you) smashing them. )
-*9. After having spent twidling your thumbs or reading a good book for
+*10. If you haven't managed to get a FFIX your either doing something wrong or your one of those unlucky guys (gals) with a bad solder or something else that probably requires shipping the phone back to your supplier/openmoko.If you got only 3-4 satelites and had a lousy reception (say -150 to -160 dBm) you /might/ have a faulty freerunner but you should try again somewhere else at another time of the day just to make sure. If you had a lousy reception but did get a FFix, try again somewhere else to se if you can improve your record.  If you on the other hand found several satelites( +5) and had quite a good reception (maybe > -145 dBm ? ) the you probably has a working phone.Now, I'm not a radio or wireless engineer, so any numbers in dBm should be taken with a grain of salt. But the main thing is that you followed the basic instruction and did a thorough scientific test! You did Science!
 minutes you get to press the "dBm" button to translate those nasty
-dB.Hz into goodness dBm signals. If you've gotten FFix some of the blue
+*11. Now report any anomalities to the apropriate mailinglists or the guys that told you to read this howto.
 blue bars has a nice black thing on the bottom. And on top of screen
 above each bar there are two numbers, the top denoting the maximum
 signal you got from each satelite and the lower number the average
 signalstrength.
 *10. If you haven't managed to get a FFIX your either doing something
 wrong or your one of those unlucky guys (gals) with a bad solder or
 something else that probably requires shipping the phone back to your
 supplier/openmoko.
 If you got only 3-4 satelites and had a lousy reception (say -150 to
 -160 dBm) you /might/ have a faulty freerunner but you should try again
 somewhere else at another time of the day just to make sure. If you had
 a lousy reception but did get a FFix, try again somewhere else to se if
 you can improve your record.  If you on the other hand found several
 satelites( +5) and had quite a good reception (maybe > -145 dBm ? )
 the you probably has a working phone.
 Now, I'm not a radio or wireless engineer, so any numbers in dBm should
 be taken with a grain of salt. But the main thing is that you followed
 the basic instruction and did a thorough scientific test! You did
 Science!
 *11. Now report any anomalities to the apropriate mailinglists or the guys that told
 you to read this howto.
 == Recommended Reading ==

@@ Line 13: / Line 13: @@
 There may be some with marginal GPSs that appear to work, but are drastically less sensitive than the norm.
-This guide assumes that you've managed to configure your FreeRunner so that you can install opkg packages from http://downloads.openmoko.org/daily, either directly through wifi or [[USB Networking]], or by downloading them to a desktop and transferring them with scp.
+This guide assumes that you've managed to configure your FreeRunner so that you can install opkg packages from http://downloads.openmoko.org/daily, either directly through wifi or [[USB Networking]], or by downloading them to a desktop and transferring them with [http://www.employees.org/~satch/ssh/faq/manpages/scp1_man.html scp] command.
 ===Aims===

@@ Line 13: / Line 13: @@
 There may be some with marginal GPSs that appear to work, but are drastically less sensitive than the norm.
-This guide assumes that you've managed to configure your FreeRunner so that you can install opkg packages from http://downloads.openmoko.org/daily, either directly through wifi or usb networking, or by downloading them to a desktop and transferring them with scp.
+This guide assumes that you've managed to configure your FreeRunner so that you can install opkg packages from http://downloads.openmoko.org/daily, either directly through wifi or [[USB Networking]], or by downloading them to a desktop and transferring them with scp.
 ===Aims===
@@ Line 115: / Line 115: @@
 * [[Getting Started with your Neo FreeRunner]]
 * [[FreeRunner GPS antenna repair SOP]]
-* [[USB Networking]]
 * [http://en.wikipedia.org/wiki/Global_Positioning_System Wikipedia article on GPS]

@@ Line 120: / Line 120: @@
 [[Category:GPS]]
 [[Category:Neo FreeRunner Hardware]]
-[[Category:Hardware]]
+[[Category:Advanced End User]]
-[[Category:Guides]]