My BT-338 freezes when it's fixing! It hangs up whenever it gets a fixing and green light starts blinking! It correctly sends data via bluetooth to the connected device as long as the green light is steady! As soon as it starts blinking no more data are sent. What should I do ? Tried with cold start and battery removal. The bug seems to persist! Is it possible that when the green light blinks, for unknown reasons it automatically switches to a different baud-rate (other than 38400) ?? Please help !!!
That's an odd one. How are you testing this? What application are you using to confirm a bluetooth connection and whether data is being sent?
I'm wondering if the BT-338 is sending data in a format that the application dosn't understand, ie the 338 is sending out NMEA data format, but the application wants another format.
An application comes with the device on a CD ( I can't remember it's name) This application allows you to change these settings.
Tested it with GPSinfo for WM5 (the application you didn't remember) and with TomTom 5.21. I experienced a sudden lack of data, with both the applications. After a correct pairing and a couple of minutes of receiving data from satellites, suddenly no more data arriving anymore. In order to isolate the problem and discover if the bug was sistematic or purely random, I paired the antenna with my Desktop PC, and used SirfDemo to test it. And I discovered that the antenna freezes as soon as the green light starts blinking, regardless the data protocol (SIRF or NMEA). Of course I restored NMEA before leaving SirfDemo, but that's not a protocol problem, it's a radio transmission one. It looks like it suddenly switches baud rate (other than 38400) as soon as it gets a fix from satellites. Any idea ?
I aslo obtained the BT-338 recently and it works perfect.
As far as I know a blinking green led indicates a fix, a steady green
led means no fix.
Cheers
Related
How can anything this good be this bad?
You can buy TomTom navigator5 for pda for £75 at PC World less on the Net
for this you get a 128meg sd card with tomtom on and a wireless bluetooth reciever and a Car charger.
You don't get a Mains charger but I found a USB hub Psu or my old toshiba pda E740 PSU will do the trick.
With the Universal software set up is a breeze. The trouble comes with the bluetooth gps which isn't adequately documented by tomtom. It is a good GPS receiver so whats bad.
on the Reciever are 2 Leds and a button
the first led has 3 states
Red totally discharged
orange charging
off fully charged (or fully discharged or broken or)
The 2nd Led is green
with 3 states
green - got a lock
green - flashing got a lock and talking to your Pda
off - switched off, or not got a lock and switched on, or its broke.
The button
push for a second on
push for a second off
push for 3 seconds reset
push repeatedly - unknown state (and it can take up to a minute to get a lock)
The problem is that fully charged and indoors you probably will get no lights at all and will not be able to tell if its on or off or broken.
if its not talking to your pda it will turn itself off after 5 minutes also if your stationary.
you can spend forever trying to get it working if you go in under bluetooth you should be able to discover it. but if you start the tomtom software it will tell you no gps.
The only definate way to get it connected is to go outside press the button and then the green led should light letting you know its on and has found some satellites. then if you start the tomtom software and choose tomtom gps it will connect.
you can share the gps using the gps settings in connections and bluetooth
(but someone else can explain that).
if you are indoors and trying to set this up, you will get nowhere.
hope this is useful info.
one more thing each gps has its own mac address as well as its display name so its possible you think you have a partnership but thats a different tomtom wireless gps unit. (the one you took back coz you were convinced it was broken).
blackest_knight said:
<snip>
if you are indoors and trying to set this up, you will get nowhere.
Click to expand...
Click to collapse
The only comment I can make here is that a lot of GPS recivers won't work indoors. I'm using a GPslim236 and this works ok indoors (at home) as long as you are close to a window (within 6ft). This uses the SirfIII (?) chipset. The earlier chipsets wouldn't work at all indoors (iirc).
Mav
The tomtom bluetooth gps is sirf III,
Seems to get a good signal most of the time.
you would think getting two bluetooth devices to pair together, location would be fairly unimportant. However with the tomtom unless its got a fix it doesn't want to play.
once you 'grok' the device its ok, but I still would have prefered an on off switch with some feedback.
Just wanna start off by saying THANKS to Schaps' effort in the latest ROM, it's great!
I am currently using the 3.30c ROM and replaced the wince.nls and adjusted some font settings for Chinese support. I am also having 2 email accts (imap) setup on it which retrieves email every 15 minutes.
Here comes the problem, once a while the phone will hang, and sometimes it does not wake up from sleep. I tried to take out the storage card to see if it will activate it but it seems like not working.
The main issue I am suspecting is the memory. I think it dies every time I run several programs or have both wifi and bluetooth on, which uses a lot of memory. (oh, also GPRS).
Here are the symptoms:
1. when the GPRS is on but not being used (my emails have finished retrieving from server), I went to comm manager and tried to pair a bluetooth device with serial port, it hung...
2. while the bluetooth is on, I turned on wifi, died......
3. I reset the device, stuck at boot screen.....
4. resetted again, stuck at today screen (but I can see wifi icon is on)
5. took out the battery and stared at it for 5 minutes, put it back in, turn on, working again...
I know there is a program Oxi.. memory release which frees up program memory, but most likely I will not remember to release it once a while. So is there any other solutions? Or is there something to do with the ROM modification (Big Storage)?
Hopefully somebody will come up with a brillian answer. Thanks in advance~~~
Hi Guys,
About 8 months i have a GNS 5843 (GPS, Bluetooth & RDS). This worked fine until this week. When i pushed the power button .. nothing happened (the blue and green light should start to flash). So i plugged in the USB connector and the red light start flashing (meaning charching), so thats OK.
But still no way that the device will power-on.
The funny thing is, it is detectable (BT) by phone & PDA so BT and connecting to the device is not a problem. The serial port is detected; but cannot be opened by programs like TomTom or IGO.
The battery is OK (although my multimeter says so) and i also tried several power sources.
Please help!
Sjaakfaal
As some TP2 or other WM device owners I've noticed that WM often seems to forget WPA passwords when using WiFi. It doesn't really matter wether you use AES or TKIP and how long your preshared key is.
In my case the symptoms look like this: After I create a WiFi connection (WPA2, AES, hidden) so that my Rhodium can use my home WiFi network, everything goes just fine. But then, after having established a connection for two or three times the troubles begin. Usually it takes about 3 or 4 seconds to establish a connection. But suddenly it takes about 10 seconds after which I get a warning that the connection could not be established. If I then go to my connection settings, I allways find them completely messed up, so that I have to select WPA2 and AES and reenter my password an so on. Well, after it happends to you for three or four times, this becomes extremely annoying.
Recently, however, I've found a kind of workaround for this problem. And here it comes: After I turn on the WiFi, I simpy wait for about four seconds. If WinMo behaves nicely, 4 seconds are pretty enough to establish a connection. If, however, I don't get connected after these 4 seconds, I IMMEDIATELY turn WiFi off, wait 2 seconds, and turn it on again. With 99% probability this second try gives me a working connection. If it doesn't, I simpy repeat the same procedure once again. So, the scheme is quite simpe:
Turn WiFi on and wait 4-5 seconds (it depends). Got connected?
Yes: O.K
No: Turn WiFi off, wait a second and turn it on again.
The main thing about this trick is not to let WinMo try to establish a connection for more than 5 or 6 seconds, otherwise it will delete your connection settings.
In my case, this workaround works perfectly. For more than two weeks I've been using my home WiFi with Touch Pro 2, establishing at least 4 or 5 connections a day and not a single time my connection settings were lost. Well, surely this thing with turning WiFi on and waiting and turning it off if you don't get connected fast enough is also a little bit annoying, but nevertheless it is much less annoying then having your connection settings all messed up every single day.
I'm not sure, whether this workaround will work with other devices or WinMo versions or even firmware versions, but may be it will help at least some of you affected by this odd problem. So you may just give it a try.
I'm using Touch Pro 2 with stock O2 Germany ROM (1.19.207.0)
Thanks for reading this long post and sorry for my bad English.
Excellent! Thank you for sharing your workaround!
I do something similar, except I turn wifi off by pressing the power button if the wifi hasn't connected in a few seconds. (By default wifi turns off when it goes into standby.)
On the odd occasions where the key does need to be entered again, I keep a copy of the wifi key "somewhere" on the device. It's a copy and paste operation after that, so it doesn't take long to re-enter the key. Luckily you can use the keyboard Ctrl-V method to paste the wifi key into the TouchFLO interface.
The other observation I've made, is that if I switch on the device by sliding out the keyboard, my Touch Pro 2 has a higher chance on getting a 'lock' onto a weak wifi signal. I'm not really sure why!
I'm glad that this workaround works not only for me
Actually, I don't use Connection Manager any more, for I've recently installed Rhodium Keyboard Controller GSM 1.3.2. Using this handy tool I remapped my Home button, so that double clicking it, turns WiFi on and and double clicking it with working WiFi turns wireless off.
I guess that Rhodium Keyboard Controller uses some advanced routine to activate WiFi, because since I use it for establishing WiFi connections, I rarely have to use my workaround, for normally I get connected on the first attempt.
see similar (but not the same) problem here
http://forum.xda-developers.com/showthread.php?t=562893
I have a OnePlus 7t, new to me, it's an unlocked T-Mobile branded phone being used on Verizon. The Bluetooth symbol shows all the time. It's on if I'm connected to a device and it's on when I'm not. Is this normal? I know I can turn off the symbol. I have looked all over the net and most of the problems are the opposite. Most people don't have a Bluetooth symbol and they want one.
Update: I've cleared the Bluetooth cache. No Change just lost all my connected devices. I don't have any problems connecting to all my devices. It' just the Bluetooth symbol in the upper right hand corner is on all the time.
I went into developers options and checked running apps. Under Bluetooth it said 1 process and 6 services running. I stopped them all and they started right back up again. Why would I have 6 running services with nothing attached?
I'm sure it has something to due with that 1 process. ??? Which is what?
I know this is not a major problem but it just bugs me.
Thanks for any help
Mike
Is the Bluetooth symbol lit when Bluetooth is toggled off? It's supposed to stay on when Bluetooth is turned on even if you aren't connected to anything.
The Bluetooth symbol is off when turned off. Its on when turned on with nothing attached (headphones, Bluetooth speaker, etc.) You're saying the Bluetooth symbol will always be lit if Bluetooth is on even if nothing is attached. All my other phones were never like that. If Bluetooth was on then symbol would appear. When disconnected the symbol would disappear. This is my first Oneplus 7T phone, maybe I'm looking at this all wrong. If you're sure then I have nothing wrong.
thanks
Sorry, you're right. My mistake I was thinking of the pull down. The Bluetooth symbol at the very top shouldn't be on unless you're connected.
Does that light go off when you toggle Bluetooth off?
Yes, it goes off when turned off.
I show the same running services when not connected.
Turn bluetooth on, go to System>reset options>Reset Wi-Fi, mobile, and bluetooth, reset everything, restart your phone.
This will clear and erase ALL of your connections!
Your mobile connections should rebuild themselves, but you might need to re-enter the APN info so write all of that down first.
You will lose all of your stored wi-fi networks and all of your paired Bluetooth!
This should clear out if Bluetooth “thinks” it's still connected to a device.
Thanks, I tried this in the past and again. Same thing, nothing connected to Bluetooth. Symbol shows on the Home screen.
I have opened a case with OnePlus and this was their first suggestion. I reported back to them, but have not heard from them since then.
Thanks
Good luck with it
Here's the OnePlus 7T support forum (not the community one). Worth a try.
https://forums.oneplus.com/forums/oneplus-7t-support/
Thanks, hopefully OnePlus will continue to get back to me. I installed a small app to turn Bluetooth on and off on the home screen. If it comes down to it, I can live with it.
Thanks for all your help and suggestions
Mike
Mikark said:
I have a OnePlus 7t, new to me, it's an unlocked T-Mobile branded phone being used on Verizon. The Bluetooth symbol shows all the time. It's on if I'm connected to a device and it's on when I'm not. Is this normal? I know I can turn off the symbol. I have looked all over the net and most of the problems are the opposite. Most people don't have a Bluetooth symbol and they want one.
Update: I've cleared the Bluetooth cache. No Change just lost all my connected devices. I don't have any problems connecting to all my devices. It' just the Bluetooth symbol in the upper right hand corner is on all the time.
I went into developers options and checked running apps. Under Bluetooth it said 1 process and 6 services running. I stopped them all and they started right back up again. Why would I have 6 running services with nothing attached?
I'm sure it has something to due with that 1 process. ??? Which is what?
I know this is not a major problem but it just bugs me.
Thanks for any help
Mike
Click to expand...
Click to collapse
I also have a T-Mobile 7T, and when Bluetooth is on with NO devices connected, it shows the Bluetooth symbol in the notification area. If it's connected, then 2 small arrows next to each side (similar to <B>) appear.
I guess this is by design. Check page 28 of the 7T manual in this link:
https://oneplussupport.s3.amazonaws.com/7T+用户手册/OnePlus+7T+User+Manual+EN.pdf
I just had a chat with OnePlus. He confirmed that the Bluetooth symbol when turned on in settings connected or not will always show in the upper right hand corner.
Thanks for your help
Mike