1. Installed latest BTStack GPS on iPod Touch 4G using Cydia (1.5)
2. Start TomTom (USA maps version)
3. TomTom receives GPS data from BTStack and follows it but constantly says "Connect to GPS" on top bar.

Based on the latest changelog I expected this to not happen (says it tells TomTom that the iPod is an iPhone to eliminate this problem). So I'm guessing this is something specific to the new iTouch 4G.

My iTouch is running iOS 4.1 with the limera1n jailbreak just released a few days ago.

I have the same problem on my iPod Touch 3G, so it is not just a 4G problem. I am also on BTstack GPS v1.5 as well as TomTom v1.5.

I just want to add that I have a iPod touch 2G on 4.02, using BTstack v1.5 and TomTom 1.5 and I get the same problem. I can get my position good, but it constantly tells me "Connect GPS" then I get the signal back, then "Connect GPS", then signal... I'm glad to see I'm not the only one having this issue... I hope something can be done. I am connecting with my bluetooth Hollux GPSlim240.

as far as I know, this is a bug/problem of TomTom, as it's up to the app to decided weather it should flash the warning or not. It does not on the iPad without GPS, so this makes no sense. I recommend to write to TomTom Support (I already did, but more mails might help). I also tried patching TomTom to believe it's running on an iPhone, but that didn't help yet.

I can confirm that this issue is only present on the ipod touch - i have an 32gb 4th gen iPod touch as well as the 16gb iPad Wifi; on the itouch running ios4.1 the "connect to gps" message repeatedly flashes on screen after app launch while the iPad running ios 3.2 there is no such problem and the app works as intended.

Also when on the itouch, when the "browse map" option is selected and an attempt to determine current location made, a popup message appears, saying that the GPS is not available and asking the user whether to switch to "last known location". On the iPad the location is immediately determined w/o any extra messages.

I am running TomTom v1.5 and BTStack GPS v1.5 on both devices with a Holux GPSlim 236.

Try making the app think it's on iPad? Either that or try another method of tricking it because it works on iPad and iPhone. I think on the touch its waiting for something to be plugged in as an accessory. Obviously the trick is not working if it still shows the message. It'd be nice to get that to go because theres a button under that message.

Issue 92 has been merged into this issue.

I've ordered an iPod Touch4... stay tuned :)

It's not just an iPod touch 4 issue

hm? I assume it's a general iPod touch bug in TomTom. I don't have any iPod touches yet. It's fine on iPhone and iPad..

Hi iPod Touch users! I've spent some time learning to analyze other people's software and did come up with a better patch for TomTom. I've tried on iPod touch with TomTom D-A-CH 1.4 and 1.6. After the BTstack GPS got a fix, the new patch explicitly suppresses the "Connect to GPS" message .

To try, replace GPS-Support.dylib in /Library/MobileSubstrate/DynamicLibraries with this one: http://dl.dropbox.com/u/5138628/GPS-Support.dylib

Please let me know, how well it works.

seems to work fine on my iPod touch 4. I'll try it on my iPod 3 later.

Note: the iPod HS or the OS versions shouldn't make a difference, only the version of TomTom being used - as it patches TomTom at runtime. It's more like.. does it work in different situation etc.

Hi.. i've updated dylib linked in comment 10 as I found a better/cleaner approach for "convincing" TomTom.

I have Ipod Touch 4 (IOS 4.2.1) and Tom Tom 1.6 and just applied the new dylib and can confirm that the "Connect to GPS" seems a thing of the past.

However, BStack GPS does seem quite tempermental at times in picking up my Globalsat BT359. Apears to connect Ok via bluetooth but reports no satellites, even though their is !

What order do you recommend to fire up...seems best for me to

1) Turn on Tom Tom 2) Turn on BT Stacks 3) Turn on GPS receiver

out of various options but even then sometimes just wont work, and I randomly turn things on and off ubtil it picks up !!

When it works its great !!

Bingo! Works great. I'm running TomTom app v1.6. About screen reports nav version 8.300, With the north american 2GB maps. This is an iTouch 4 with IOS 4.2.1.

I also noticed that visual feedback is smoother. It used to be a bit jumpy as it updated the position but it's much closer to my tomtom one now.

Seth

P.S. This is with your first dylib, haven't tried the 2nd one you posted yet.

Hi Matthias, I tried using the suggestion in comment 10 on my ipod touch 3rd generation. It took away the "connect to GPS" but also removed all the other text in the tomtom application. Just icons were left. had to revert back. Any suggestions?

Jeff

hi Jeff (and others). Please install this dylib: http://dl.dropbox.com/u/5138628/GPS-Support.dylib

It "finally" (big word, I know), fixes TomTom buggy GPS detection logic - also works for Nike+ GPS.

Matthias, I installed the new dylib. It does remove the "connect to GPS" but also removes all the text from the software menus - it become unusable. Have you encountered this problem before?

@jstomp... did you try the one in comment 17? An earlier one did remove the text from the status bar in TomTom. I didn't see - and I cannot image, how other text should disappear. Will give it a try on my iPod 4 again.

Hello Matthias, I did use the dylib from comment 17. I tried it on my ipod touch 3 running on OS 4.2.1.

Hi All, Apologies for the basic question - but how do I install the dylib file?

Many thanks, Mark.

@mark... the easiest way would be to use a tool that gives full access to the iPod filesystem, e.g. [http://www.macroplant.com/iphoneexplorer iPhoneExplorer]. Then you have to first delete the old at Library/MobileSubstrate/DynamicLibraries and then copy the new one over. Otherwise, you can wait for the next update.

Great man!! Now it works perfectly with Nike+ GPS!!! Thanks a lot!

Thanks you so much! tom tom 1.7 working great with above solution! cheers

Update: now getting "poor gps reception message" tomtom 1.7 btstack 1.5

Confirmed that dylib file from comment 17 works great with v1.7 on iPod Touch 2G with Vodafone external GPS. Thanks!

i couldn't see Library/MobileSubstrate/DynamicLibraries in my ipod touch 4 so i created one with the iphone explorer and copied the dylib file from comment 17. however it still doesn't work. can anyone help? thanks.

It should go into /Library/MobileSubstrate/DynamicLibraries/- and sorry for late update... I'll get there.

Is Btstack compatible with Ipod touch 4g 4.3.3?

It works in my touch 4.3.3. But I'm not sure if the patch works with tomtom 1.8. If it will not interfere with normal use, I'll just leave it there.

Crap... and I just downloaded tomtom 1.8.

I think this is not a real problem. I didn't find the usage was interfered by this message, so I'd rather not to remove it by a hack.

Short summary: The OS has a capabilities flag "has GPS" that applications should query to find out if GPS is available. BTstack GPS sets this flag when installed. However, TomTom does also ask what exact device it is running on, which it a) doesn't need to, b) shouldn't. That's just bad software engineering.

The update .dylib above doesn't patch TomTom itself, but intercepts the low level calls TomTom does to the OS and reports "iPhone". This mechanism should be safe for updates in TomTom. Please go ahead and try.

OK, that sound good enough, I'll try it later. Thanks for the clarification!

Just tried the patch with Tomtom 1.8. It works. And I can see more messages in that status bar, even it is "poor gps signal" sometimes...

I didn't find a signal strength measurement in the btstackgps screen, usually gps application will tell you how many satellites it picked, and how strong the signal is.

Anyway, the patch seems work with TomTom 1.8 well.

the 1.6 release contains a fix for tomtom and RadarActive, Nike+ GPS and Runmeter.