Develop Bugs

GPS without Reciever?

I just read over TOM TOM, etc, and I realize it uses a COM port when you plug it in the reciever (usually in your car), im wondering if this is a required thing. Can't I just install TOM TOM and on the go, connect to GPRS and find where I am? How does this all work?[/code]

TomTom, like all the other nav programs, expects to receive GPS data, usually in NMEA 0183 format (a simple text-based protocol). Most GPS units provide a serial interface, since it's cheap and is supported by just about every computer around, so that's how the nav software expects to read the data.
If you could somehow get location info from GPRS or from the GSM signal itself (look around here for a program called Cell Profiler -- it does something like that), then translate it to NMEA format and spit it out a fake comport that the nav software could read from, that'd work, but it's a lot of work, and won't be nearly as accurate as a good GPS.
GPS units are pretty cheap -- I've seen wired ones in the $40 range, and even the best BT ones can be had for $150. Compared against GPRS charges, it's quite the bargain. I've used an Altina GBT708 BT GPS for several months, and it works very well even with the SX66's subpar BT implementation. I'm about to upgrade to a Globalsat BT 338, which is supposed to have much better GPS reception.

Im afriad not mate. But if you want to use it on the go, i.e. "Foot Patrol" instead of in your car then go for a bluetooth gps reciever. I recommend the new ones that use the SiRF Star III chipset. Heard their meant to be pretty good.
Hope this helps.

globalsat BT-338s work great with a BA

iGuidance v3 Thoughts

So, I purchased iGuidance v3 to use with my t-mobile MDA. I considered other options but iGuidance has received good reviews on this site and was less expensive than others. Previously, I used a Mio 168 which runs the Destinator 3 software so I will be comparing iGuidance to Destinator.
iGuidance Pros:
The user interface is much better. Bigger buttons, easier to move around, etc.
iGuidnace Cons:
The voice that tells when to turn is very weird. I goes like this, "in <space> point <space> six <space> miles <space> turn right. The spaces are annoying. Destinator didn't do this.
In Destinator when you were moving slowly the map would zoom in automatically. When you sped up it would zoom out. With iGuidance you need to manually zoom in and out.
So, based on pure functionality I would have gone with Destinator. They are now on v6 which may have a better user interface.
Al

Update
I found out that the slow speech problem is due to a conflict with ActiveSync. Since I am using direct push, ActiveSync is always on. They're coming out with a patch to fix this soon.

indeed the slow sound is activesync related....too bad there is no update for it still....
i think iguidance in general has superior maps and routing directions over tomtom. tomtom6 now has pretty good maps but they still lag behind iguidance's
the only thing i prefer in tomtom over iguidance is the GUI design. iguidance should really put more effort in that department.

slow speed is due to connection. fix here: http://forum.xda-developers.com/newreply.php?do=newreply&p=1075123

Disable internal GPS in favour of external?

I would like to know how to disable the internal GPS.
The reason is that I have found it to lose position fairly frequently whereas the TomTom Wireless GPS MkII I was using with my old Treo never once lost it's position.
So I intend to disable the internal GPS, and use my TomTom Wireless GPS MkII instead.
WinMo 6.1
Black&White v5.0
IPL 1.25.0001
SPL 1.11.0000
GSM 02.67.90
OS 4.1.0.7
thanks in advance
Paul

I can only think of settings/GPS. Maybe setting GPS Program port to '(none)' instead of com4 might disable it? Also, I just had a look and when I load tomtom on the phone and go to 'configure' where I would select a GPS receiver to use, there's one which says Tom Tom Bluetooth GPS Receiver. Would that work for your wireless? I'm just guessing here.

Thanks Roman. I don't see any way of validating 100%, but I think what's happening is when my external (TomTom Wireless GPS MkII) is connected, the phone is getting it's position from that GPS rather than the internal one.
So in theory, problem solved.
In practise however (I used it yesterday), the phone isn't losing the GPS position like before, but it seems to have lost a load of accuracy.
I need to do more testing on this.

memory map

I have been using memory map with no problems on an Ipaq, MDA vario, and HTC touch dual.
However, now ive upgraded to a touch pro 2, it seems to be giving problems.
Firstly, it usually wont open the maps, even though ive cut them down to about 56MB, is this still too large for wm6.1?
Secondly, what happens when I leave memory map running but turn the device off? Will it keep tracking like my touch dual did, or will it turn the gps off?

I'm having massive problems with MM on my TP2 as well. On my iPAQ HW6915, I could load all of the A-Z of London, no proboems; likewise, I could load large swathes of Regions 1, 2, and 3, in chunks, no problem. On the TP2, I can't even get a quarter of the size of those map chunks to load - I run out of space in RAM almost immediately. Not at ALL amused ISTR seeing somewhere that this is due to the RAM hogging of the TouchFLO interface - can anyone confirm this?

I have found memory map to be a good edition to my TP2. I have been on walks in the North Downs and around Swanage and have found it to very useful and accurate.
The maps can be a little tempremental but I find if I turn off and on again this seems to cure any problem. The largest map I have on my TP2 is 50.9mb.

maps
i am running mm on my touch hd with no problems try mm web site

I have had a reply from memory map explaining that wm6.1 can only handle data in smaller chunks, so I need to split the maps up into smaller sections.
However, I still dont know what happens when I turn the device off. Will it switch the GPS off or will it still keep tracking my position?

I have been using memory map on the TP2. I too had to chop my maps smaller than when using the Kaiser, but the bigger screen is likely to eat more RAM. For info, my maps open up to about 120M unless I have other apps open at the same time. I have re-chopped the maps with maximum 97M and don't have problems with multi-tasking, but then again, I don't have touch-flo enabled - nor do I use SPB Mobile Shell anymore.
Can't answer the question about tracking in suspend mode as I always put the handset in my pocket when it's suspended, so it loses the signal.

Is mine a different problem then because my maps wont open even though the file size is only 56.8MB?

HTC TouchFlo3d can cause problems with memory map as well, restricting the map file size further. Theres a few other threads on this (try in the HTC Touch HD forum).
I've found if i do a reset before running Memory Map i have more success. Disabling the 'Album' tab also helps.
i've just reloaded mine with smaller maps though.
Need to find a WM5 ROM to run on my old MDA Compact III (Htc artemis) so i can run it properly!

http://forum.xda-developers.com/showthread.php?t=448402&page=4

hi all
I have the area 2 1:50,000 running fine
but..............
cant seem to pick up any sattelites.
I am using the following settings
manufacturer NMEA
model (greyed out) NMEA 0183, RMC
Port GPS0
Baud 4800
is this correct
many thanks

I'm using:
Magellan
Port COM4 (as set in External GPS settings)
Baud 4800

put it to com 4 and it works a treat
thanks

GPS lag in TT7

I have my rhodium for a week right now, and notice some gps lag in tomtom 7. I unlocked my rhodium with the hard spl and tried several roms and radio roms, most of them perform similar regarding the gps lag; tomtom is always one update tick behind.
If I adjust the POLLInterval in the registry, from 1000 ms to a lower value, the position on the map in tomtom is not updated more frequently, so the lag is still the same.
I also tried the gps patch from ITDev, but without succes, lag remains the same.
Then I switched the gps settings in tomtom to my old bluetooth gps, and also there is the lag. It seems the problem is somewhere in windows mobile or tomtom, and not in the qualcomm gps-one driver/settings.
Has someone tested the lag with another navigation package and compared that with the gps lag in tomtom?? I'm going to try it with navigon, and try just one more radio, the latest one: Radio_Rhodium_4.47.25.24. If that's not working I will wait till the official WM6.5 rom is released.
Another question, does somebody know how to get the assisted gps working?? or correct the gps lag?? I was unable to resolve the lag with any of the tweaks discussed here on XDA.

Just arrived today , the updated GPS fix, saw positive reactions!
http://www.htc.com/nl/supportdownloadlist.aspx?p_id=250&act=sd&cat=all

I have tried that radio too, still a lag of 1 second in tomtom, the same as the update frequency, just one tock behind.
Just tested navigon, together with Radio_Rhodium_4.47.25.24. Completely no lag at all, when I drive over a roundabout it displays my position correctly, when a drive over bridges and rivers it displays my position correctly. When I do this with tomtom I already passed the roundabout while tomtom is stil approaching the roundabout.
When I look at the gps settings in Navigon is seems that navigon reads out the gps directly from com 4.
If I want to make a same setting in tomtom it is not possible. With some roms and radios com4 is not even listed in tomtom, and with other roms I have com4 but can only access it when I let windows control my gps. This box can be checked in the settings/system/extrnal gps dialog on the third tap (access). When I uncheck this box I don't get the internal gps working.
Strange that navigon does not have gps lag, and tomtom is continously 1 update tick behand. And the update frequency in Navigon is much larger then the update frequency in tomtom.
Sometimes the position freezes for a second in navigon, but after that the position is correct again.
To summarize, what an amazing difference between tomtom and navigon.

Where did u find the radio 4.47.25.24???

http://xdadev.f1ip.net/index.php?dir=Rhodium/Radio
that's where that radio comes from

tried that latest radio with tomtom, the gps lag is still not gone.

i'm not sure if this has to do with radio's roms etc. i tried igo 8 and tomtom. both lagged horrible. then with gps tweaks it improved a little .. but still lag.
Then i bought Copilot 8 .... NO LAG AT ALL .... nothing.... nada . When the car turned ... copilot is ready.
So ... why should it be the radio or the rom when lag differs on software ?
I think it has to do with programming the navigation applications.

i have also tried the patch from HTC for the radio and the lag is still there when using tomtom. surely between HTC and Tomtom this can be sorted out.
very frustrating to be paying such a lot for a phone only to find that the one application i use everyday works better on my 2 year old TYTNII.
If it was not for me recently renewing my traffic and speed cam sub then I would ditch them.