Database Develop

USB GPS Mouse connection

Hi there,
let me first thank you for this great site you put up here!
And here comes my question:
I want to hook up my USB GPS Mouse (made for the notebook -
meaning it get's it's power via USB) up to my XDA.
And now I wonder if I can simply solder the data +/- cables
from the USB Mouse to the USB data +/- pins on the XDA plug
(so I could still use the same cable for ActiveSync on the PC),
or if I have to solder the data +/- cables from the USB mouse
to the serial RX/TX pins as described on the 'The XDA's connectors'
page of this site...
I was planning to hook both the GPS and the XDA up to my car
power adaptor in a kind of a Y constellation:
::::::::::::::::::::::::::::::::__________ Power
:::::::::::::::::::::::::::::::/
::::::::::::::::::::::::::::::/
::::::::::::::XDA ----------
::::::::::::::::::::::::::::::\
:::::::::::::::::::::::::::::::\___________ GPS
and use Power for both.
Maybe someone can tell me about the data hookup.
Thanks, Lars.

I don't have answers but some things you have to consider.
1) The XDA is a slave device. I presume the GPS receiver is one too. I really wonder if they can communicate with eachother
2) Based on how you describe this you want to power the receiver from the the car. I assume you have checked the right voltage requirements for the receiver and that the powersupply can deliver the currents required for both the XDA and the receiver. My personal experience is that the latter shouldn't be too much of a problem, but it can't hurt to check.
3) Combining USB and Serial the way you describe it is not a good idea. (mark the last character '.' as in PERIOD).
Robert

Power Supply
Hi Robert,
thanks for your suggestions.
Indeed both (the original ActiveSync cable from the XDA and the
USB GPS) get their power off a USB port on the notebook so
this must be the same voltage requirements.
This ActiveSync cable is a combined car charging cable with an
USB 'A' type connector on the end which you can plug either into
the USB port on the notebook (where it also ActiveSync's) or into
the car's power adapter (where it only charges).
So this both same voltage. And the car power adaptor should
nominally supply enough power for both...
But I don't understand what you said about it not beeing a good
idea to hook up the USB data to the SERIAL data.
When plugged into the notebook in WinXP the USB GPS installs
a 'Prolific USB-to-Serial COM5' to emulate to the programms
working with it a com5 (or com1 or com2 depending on your
hardware settings) communications port. So I guess the data
coming from the USB GPS is just the same as if delivered via
serial cable and all the driver does is faking to be a serial port
to any programm asking for data from com5.
And I think a USB device is 'not really' a passive device as it starts
popping out ASCII data strings as soon as it get's power (no matter
if there is a device to read the data or not).
So I figure when you plug it into the XDA and tell the XDA by means
of USB wakeup (USB_VDD pin 13) that there is an active USB
connection, that it will start trying to figure out what the heck the
connected cable is trying to tell it.
And here is the tricky part where I don't know if the XDA might not
believe it is beeing Sync'ed and therefore starts ActiveSync.
Anyone with any experience or suggestions there...??
(Sorry for the rather lenghty post)
Greetings, Lars.

Lars,
seems like you got the power all figures out
regarding the usb/serial discussion.
If I understand you correctly you can plug the USB connector of the GPS receiver into the USB port of the PC.
'somewhere' in the PC this is modified into a virutal serial port in order to enable serialport aware programs to work with the GPS receiver as well.
This is a good concept but at an electrical level that still means that the GPS receiver is connected in an USB fashion. There is nothing Serial Port about that. In a way you already pointed that out in your messages by using the word 'emulate'.
You can hook it up to the USB part of the XDA but still I doubt about the master/slave discussion of USB.
Regards Robert

No cahnce.
Save yourself time/money.
Forget it.
Lars said:
Hi there,
let me first thank you for this great site you put up here!
And here comes my question:
I want to hook up my USB GPS Mouse (made for the notebook -
meaning it get's it's power via USB) up to my XDA.
And now I wonder if I can simply solder the data +/- cables
from the USB Mouse to the USB data +/- pins on the XDA plug
(so I could still use the same cable for ActiveSync on the PC),
or if I have to solder the data +/- cables from the USB mouse
to the serial RX/TX pins as described on the 'The XDA's connectors'
page of this site...
I was planning to hook both the GPS and the XDA up to my car
power adaptor in a kind of a Y constellation:
::::::::::::::::::::::::::::::::__________ Power
:::::::::::::::::::::::::::::::/
::::::::::::::::::::::::::::::/
::::::::::::::XDA ----------
::::::::::::::::::::::::::::::\
:::::::::::::::::::::::::::::::\___________ GPS
and use Power for both.
Maybe someone can tell me about the data hookup.
Thanks, Lars.
Click to expand...
Click to collapse

Guess U R right
Hi Guys thanx for the feedback,
I spent an afternoon researching on this stuff and am very disappointed that I have to admit you are both right.
Now way (other than putting some 'intelligent' converter between the USB GPS and the RX/TX pins of the XDA) to make the USB 'language' sound like 'SERIALean'.
I think there should still be a possibility:
Let everything run via the USB, persuade the XDA it's not ActiveSync talking to it and write a driver that talks to the GPS via the open USB connection and sends the proper commands to recieve the NMEA ASCII.
And then you would still need to tell your route software to take the incoming data from the virtual (or emulated) COM port...
And when I read the above chapter once more :shock: I find this is definitly not a job for me!!
So I will just get a serial GPS an hook it up the nomal way.
Cheers and thanx again, Lars.

Hi,
Just read your post. I am new to pda land. Just bought a xda2
I have a laptop which I use with a gps usb mouse via usb on the laptop. Am I right in thinking that I could have bought a ps2 mouse and used a ps2 changer to usb and it would have worked??
If so can't I buy a usb to ps2 changer in order to plug into a car connection cable which has the ps2 and the xda conection and a ciger lighter plug for power? OR is there a similar cable for a usb connect for gps?
Am I missing something here?
Thanks
P

GPS RS232 to XDA

Hallo, I'm from germany and i've got an Laptop-GPS with RS232 and PS/2 conectors and i would like to know if there is any possibility to built an adaptercabel?
Then i don't have to buy a new GPS antenna.
Thanks for answering

If your gps is made by Haicom or similar, the adaptor lead containing power and data connections are only £15 here in UK, lot less trouble than obtaining an xda connector and trying to solder the connections, if you get power in the wrong place you have no xda or gps.

Hello,
my GPS is build by GARMIN. It's a GPS 35-LVS. I don't know, if it is similar to a Haicom. Maybe anyone else knows it.

You can use a serial cable + null modem adapter which is no problem.
The biggest problem for you is how to power the GPS.
I understand it is normally powered by PS2 so you need to find an adapter so that you can power it in car or use batteries.
You may be better off buying another GPS.

Hi PC-Mobile,
thanks for your answer, thats the way i supposed. In my opinion i can use a powersupply that makes 5V out of 12V. Than i get power for both, the XDA and the GPS.
Thats the cheapest way for me, the null-modem cabel i can build myself and seriel cabel is easy to buy.

Look here.
Regards, Tore

Unable to hear incoming phone call, while charging

I have this peculiar problem with my O2 XDA IIi. Whenever, I connect the charging cable, I am unable to hear the incoming call, even after disconnecting from charger, I can not hear anything. Only after,the caller dials again, with my charger disconnected, could I take the call. Please help.

Me too.
But I have this problem with retractable usb cable for sync/charge.
With cradle I haven't this problem.
Do you have problem with cradle also ?

Is there anyone with the same problem ?

Diggia said:
Is there anyone with the same problem ?
Click to expand...
Click to collapse
I am too experiencing this problem when charging it using retractable sync cable on my XDAIIi.

Yes, I have the same problem. It is so anoying that sometimes I have to leave my phone off the cradle so I can receive calls.
I would love to hear how to avoid this problem. I think may be I am using ActiveSync 4.0 and it may cause this problem but I cannot tell that for sure.

tongben said:
Yes, I have the same problem. It is so anoying that sometimes I have to leave my phone off the cradle so I can receive calls.
I would love to hear how to avoid this problem. I think may be I am using ActiveSync 4.0 and it may cause this problem but I cannot tell that for sure.
Click to expand...
Click to collapse
I have the problem with ActiveSync 3.8 also but with retractable usb cable only, with Qtek cradle all works perfectly.
But I think is not an ActiveSync problem, because I didn't hear phone calls also without launching ActiveSync.
I think the problem is in the cable, but I'm not sure :roll:

It is the cable fault, I was using XDA II and now XDA IIi, some of the retractable sync cable or normal sync cable have this problem. After some search, I managed to get a normal sync cable that able to do that

johnnykok said:
It is the cable fault, I was using XDA II and now XDA IIi, some of the retractable sync cable or normal sync cable have this problem. After some search, I managed to get a normal sync cable that able to do that
Click to expand...
Click to collapse
I have the same problem with my retractable cable and a cheap USB cable that I got from eBay.
Sounds like it might just be aftermarket USB cables that have this issue...
Has anyone tried taking calls with an OEM USB cable attached?

johnnykok said:
After some search, I managed to get a normal sync cable that able to do that
Click to expand...
Click to collapse
If you find it, please tell us :wink:

My XDA 11i doesn't ring when it is on the original cradle charging and connected....
this is really annoying, is there anything I can do ?

@pettiforj
I have the problem with retractable cable only (see up), then I don't know what suggest to you .
Have you tried with an hard reset ?
I know it's an extreme way to try to resolve the problem, otherwise I don't know alternatives, I'm sorry :wink:

Same snag with Tom Tom
I have the same problem when using Tom Tom, When I plug in the Sync/charging cable I lose all audio !
So I can either Use the Tom Tom or charge the PDA but not both!
I also have the backpack fitted and this does not charge when using the cable. however it does charge on the cradle.
Does anyone know of a Sync / charging cable that works properly with the XDA II i

Unable to hear while phone on charge.
drchandra said:
I have this peculiar problem with my O2 XDA IIi. Whenever, I connect the charging cable, I am unable to hear the incoming call, even after disconnecting from charger, I can not hear anything. Only after,the caller dials again, with my charger disconnected, could I take the call. Please help.
Click to expand...
Click to collapse
You have to change the cable. I also had same problem but after I changed the cable everything is working fine. Its good if you go to market and check the cable by connecting before purchase.

the way to fix your problem
this problem is in your cable.
1. open the cable box.
you will see there is a socket.
2. cut the 2nd electric wive, it's mass.
that 's all.
the problem is, this cable is not for your O22i, it's for O22s.

this is not because the cable is for o2s only,because this is the cable of china.i have the same problem,just do like u,it will ok.
if you dont want to do that.u can do this way: when have incomming call,just normal answer,but then press the hold button and press resume button,u will answer nornal.

Give more details
rosebell said:
this is not because the cable is for o2s only,because this is the cable of china.i have the same problem,just do like u,it will ok.
if you dont want to do that.u can do this way: when have incomming call,just normal answer,but then press the hold button and press resume button,u will answer nornal.
Click to expand...
Click to collapse
Thanks, I used to think this bug caused by operating system of WM2003. But could you tell me more what is the hold button and resume button. My PPC is O2 xdai

Slide up an down the volume slider does the trick too. The problem is really the cable and, as kenphan said, the presence of mass (it is normal and doesnt cause the problem when you are using a Blue Angel - I have and use both 2i and 2s).

The answer to what you asked: You can hear a coming phone by Bluetooth earphone while charging or connecting

Same Problem
Guyz i have the same problem with my O2 XDAIIi and using O2 XDAII china cable. i tried to open the cable and look for the faulty ping to disconnect i count figure it out, after googleing found that Pin5 (SngGnd shouldn't be grounded) so i disabled the pin5 gnd and still the problem exists
the cable is like that
Pin2,5 connected with a black gnd cable and a short circuit betweeb (Pin2,5) to Pin18and all other cables are connected in the middle
as in the Pic illustrated please guyz i do really need your help as the cable is Sync/USB Charge/Car Charge for me its my life & i cannot find a replacement in my country. your help is highly appreciated.
thanks

Someone elsewhere on the forum solved this one but at your own risk!!
Connector signal descriptions here:
http://wiki.xda-developers.com/index...ame=Connectors
The response noted that pin2 (GND/Sense) was connected to the other GND pins at the XDA end of the cable on his USB cable. The notes in the above web page say this will cause the phone to hang up.
He disconnected this pin from GND and says now he can hear phonecalls when the cable is plugged into the phone.
I will have to open my connector up and see if this is the same on mine !

Help me psl my IIi can not heard phone conversation

Help me psl my IIi can not heard phone conversation when plug sync charger.

I have exactly the same problem.
I bought a retractable sync/charge cable from ebay.
http://stores.ebay.co.uk/PDA-Sync-and-Charge-Cables-and-Crad
However, if the cable is plugged into the phone, then the phone speaker (and I think also the mic) are muted. The cable dosn't even have to be plugged into the PC USB port to cause this problem.
At first I thought this was some incorrect wiring on pin 19 of the connector at the XDA end of the cable. This signal is meant to control whether the sound is driven out of the car kit pins or not. However, this signal was not connected on the connector, which should be ok.
I noticed that if the phone is paced in the original sync cradle, then the pda appears to go into handsfree mode, which would tally with one of the functions of pin 19.
All I can guess is that the s/w in the phone detects a signal on the USB pins and attempts to route sound out via the car kit pins.
Anybody know of a fix for this?
Cheers,
Chris.

I know many people have exactly this problem. It is not a problem of our XDAIIi, it is the problem of the Sync charger. I remember someone has shown how to fix this problem of the sync charger in a Vietnamese mobile phone forum but I don't understand anything 'bout electric so I can not translate it. What a pity!

Hi MrSandman,
I dont speak Vietnamese, but I do know electronics.
If you could post a link to the forum, I may be able to make some sense of it.
Thanks,
Chris.

I have the link but I'm sure u will not understand anything 'cause everything is in Vietnamese. In that topic, one guy said that he could fix that f***ing problem and if anyone wanted to fix it, just brought the sync charger to him. He just shown how to fix it in a few words that no one could understand. But in general, he said: "open the plug head of the sync charger and remove the first "masse" string". Does anyone know what is the "masse string"?

Fixed !!!
This works for my cable - but try this at your own risk!!
After thinking about it some more and re-reading the connector signal descriptions here:
http://wiki.xda-developers.com/index.php?pagename=Connectors
I took another look at the wiring in my cable.
I noticed that pin2 (GND/Sense) was connected to the other GND pins at the XDA end of the cable. The notes in the above web page states this will cause the phone to hang up.
I disconnected this pin from GND and now I can hear phonecalls when the cable is plugged into the phone.
I noticed that pin 5 (Analog GND) was also connected to the other GND pins which is also apparently a bad thing. I disconnected it just in case.
Pins 20,21 and 22 are the 5v positive charge connections. They are not connected in my cable and I wondered about connecting them to the USB 5v signal. I decided to leave it in the end as they may draw too much current form the USB port. The phone does charge anyway - just very slowly.
Hope this helps.
Chris.

Mentioned fix works fine for me
Thanks!

I have the same problem also.. i've read the wiki but did'nt catch well what it saying. Please put in in a simple words step by step what to do..oo please..

2 GND / SENSE
5 ANALOG GND
16 GND
17 GND
18 GND
In my cable connector there were two small red wires soldered to 3 pins (from '2' to '5' and from '5' to all three GND pins which were soldered together as one pin;
The thing is that '2' shouldn't be connected to GND. In wiki there were suggestion not to connect '5' to GND as well (has nothing to do with sound problem).
I removed those red wires and everything is working fine (I'm using it for a month now);
Be careful and good luck!

USB/ handsfree problem?

Hi all,
Got a bit of a random problem here. In the last couple of days my Tytn II stopped recognising the USB (wired) handsfree kit. It would simply continue to play sound to the normal speaker, rather than through the headphones.
Fairly simple issue, you might think - either the handsfree or the USB port. Except that the phone will connect to my PC via USB, and recognise that it's connected. And when I connect a friend's working USB handsfree kit (from an Orange SPV phone), I have the same problem on my phone.
Anyone got any ideas as to what the frig is going on and how I might fix it?
Thanks!

your device's usb port has crapped out...
from what i've read on countless other threads in this section of the kaiser forums, the usb port on your device has TWO sets of connections...
...the pins along the top and the pins along the bottom...one is for usb syncing and the other is for audio input/output...
...put your device under a strong light and (use a magnifying glass?) to check for bent pins or other wear and tear
...search for the threads i've mentioned for more insight and how to find a replacement part if it is needed in the worst case
good luck!

Ah, gotcha. That sounds more plausible than a driver issue, and would explain the disparity in hardware issues. I'll take a look!