Develop Bugs

Car mode triggered

Finally find out how the car mode is triggerd
short circuit the ID Pin of the micro usb conector to any other pin will make my phone into Car mode and the car panel will popup if installed.
The ID-Pin is the 4th pin of the conector wich is the 2nd from left when desire facing up. Since the pc end of a data cable doesn't have the ID-pin, it won't work like this thread said
forum.xda-developers.com/showpost.php?p=6519276&postcount=10
birdster said:
Ok went into the workshop and stripped the desire usb lead, I tried every combo of pulling the data lines to ground even both together, the installed navigator.apk didnt kick in , but looking at a reatime system dump i could see usbconnected and type(0) , type (1), type(2) had been triggered, on the differnt combo's i tested, why its not kicking in is anyones guess, maybe cas the Incredible navigator.apk is strictly configured for that device, guess the Incredibles navigators.apk has to be recompiled with new settings !!
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can someone confirm that

Can you confirm with pictures or diagrams?

So this means that an amended cable would do it every time?

yes, just like my car charger did, even when the charger is not pluged in the car lighter.

Can you please post pin-out schematics?
Thx.

i think the menu is hidden by htc as the desire does not have the copper pins at the bottom like the nexus 1. hence the nexus 1 car dock wont work on the desire. the nexus one can be charged with the pins and does not need the micro usb for car dock chargings / docking. i guess the car dock software options shown on the desire by accessing the settings widgets are a hangover from the similar software on the nexus 1 hence hidden on the desire by htc.
i have the car dock app installed (dont remember from where though) and it works fine instead with navigation / voice search icons etc.

Sent from my HTC Desire using XDA App

bubblesmoney said:
i think the menu is hidden by htc as the desire does not have the copper pins at the bottom like the nexus 1. hence the nexus 1 car dock wont work on the desire. the nexus one can be charged with the pins and does not need the micro usb for car dock chargings / docking. i guess the car dock software options shown on the desire by accessing the settings widgets are a hangover from the similar software on the nexus 1 hence hidden on the desire by htc.
i have the car dock app installed (dont remember from where though) and it works fine instead with navigation / voice search icons etc.
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HTC is coming out with their own car dock. That is why their 2.2 ROM has the necessary support for it.
http://www.expansys.com/d.aspx?i=199788

neur0x said:
Can you please post pin-out schematics?
Thx.
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Yes, I would be very interested in the schematic

sorch said:
HTC is coming out with their own car dock. That is why their 2.2 ROM has the necessary support for it.
http://www.expansys.com/d.aspx?i=199788
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something like that has been on th expansys and other websites since april / may onwards! so i wouldnt take that too seriously till it actually arrives and car dock works when docking.
at present i use the car dock app which has to be triggered manually but works fine. i use it with the car mode app.

Yesterday i was driving with the car charger inserted in the Desire, when i was moving the cable sometimes the Desire gave a little car icon and my NavApp was activated. Sow i think i has something to do with the 4th pin, and you don't need a certan resistor attatch to it to get it in a certain mode.

bubblesmoney said:
something like that has been on th expansys and other websites since april / may onwards! so i wouldnt take that too seriously till it actually arrives and car dock works when docking.
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That is probably because it needs 2.2 to to work properly. That's why the timing just happens to be after the release of said ROM.
Seems very overpriced if all it does is hold and charge the phone + short some pins together to enable car mode. Seems like anyone could make something to do that.

I some how triggered car mode on my desire yesterday. It must have been as I inserted the charger as I pulled away so may have shorted a pin. but went to car doc mode and had car symbol on status bar and I had to push to exit even after unplugging charger. I have not been able to replicate this since.

I bought 3 mini usb to micro usb adapters from eBay to allow me to use my existing car chargers and all three of them put my Desire (2.2) into car mode but don't appear to work as data adapters in my quick test.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=310237922332
I see the car symbol and the notification tells me that I am in car mode but what does it do for me?
Thanks,

Since Froyo update I keep getting the car icon in the task bar when I plug the charger in...

Following the instructions I've made a "car dock cable". I intend to use it with a usb car charger when that arrives. I just soldered pin 4 and 5 together, which now gives me the icon and navigator pop up.
I used one of these cables : http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=260636551302 as they have an easily removable micro usb end, plastic cover.

Can you give more details - 4 and 5 on the non Desire end?

Yes, more details please. Would be interesting if I can modify a Brodit active charger..

Philosoma said:
Yes, more details please. Would be interesting if I can modify a Brodit active charger..
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I also bought an active Brodit charger and it doesn't seem to trigger the car mode, so I am curious if it would be possible to modify to charger in order to achieve this.
Edit: I just sent an email to Brodit and asked them if its possible. Let's see what their answer will be. I post it asap.

I bought 2 different Mini usb to micro usb converters from Brando.hk.
Carmode triggered on both types when i use it with my old Athena charger.
think i paid around 6$ for a converter.
This might be easiest way without cutting cables and soldering.
theese are the converters.
http://shop.brando.com/mini-usb-to-micro-usb-adapter_p03683c0006d001.html
and
http://shop.brando.com/mini-usb-to-micro-usb-adapter-w-on-off-switch_p04160c0006d001.html

[Q] Problems with HTC EVO car dock and charging?

Hi, everyone:
I just got the HTC EVO car dock a few weeks ago, and I'm mostly pleased with it. One strange thing, though - it appears that the phone's battery will not charge as quickly as it used to, if it charges at all.
This evening, I tried an experiment. I had my 1A charger connected to the EVO dock, then I docked my EVO. When I go into Settings/About Phone/Status, Battery status shows Charging (USB). However, when I remove my phone from the dock and plug it into the charger directly, Battery status shows Charging (AC)!
I haven't been able to find an answer to this problem. One thread here stated it is a problem with Froyo and the dock application, that it only allows charging via USB, but I can't corroborate that. I found another thread that said it's a safety feature, that it won't charge a hot battery, but in my testing above, the battery is fairly cool and I still get different results.
Has anyone else come across this problem? Perhaps it's just a defective dock? Otherwise it's a fantastic car dock, but I'd hate to find out it has a design flaw that borks charging. Thanks!

The car dock does charge as usb mainly bc the dock has a slightly different pin set putting the phone into navigation mode ..but also decreasing contact with the port ...
Sent from my PC36100 using XDA App

I have the same car charging problem, although I don't use a dock, or the docking application. I just cannot charge in the car. The EVO reports that it is charging (AC), yet no electrons flow toward the phone from the car, as reported by both Current Widget and SnapTurbo's widget.
I've been looking for a solution to this issue for a while. The car's power port works fine. I can plug the home charger into an inverter and plug the inverter into the power port and that works perfectly. I have tried three different brands of car charger and none work. My next solution will be to find a DC12 to USB adapter and use my regular USB cable and see.
Hopefully we can get some answers.

OK, a little more info:
I installed CurrentWidget, and I logged my half-hour commute. For one log, I had the phone plugged in the Dock. For the other, I had my phone plugged in directly from the charger. For both sessions, I had 3G and GPS on, Car Home was running and I had the navigation program open. Here's what I found:
Phone in Dock average draw: -77.419Ma
Phone out of Dock average draw: +136.0588Ma
So, my unscientific conclusion is that the dock is somehow losing over 200Ma. With Nav, 3G and GPS running, that's enough to change the phone from a charging state to a dis-charging state.
I guess I'm going to return this dock. It's a shame, really, because otherwise it's a well-build, easy-to-use dock. But if it's not going to charge my phone while driving, it doesn't make sense to use.

It's not the dock, its froyo...when the dock is placed into dock mode by grounding pin 4 ANY dock that truly places the phone into dock mode will do it...I built a dock cable when the phone launched, it worked fine..now after froyo it and the HTC dock cause the usb only charging rate as well as the 3.5 jack volume fix..(won't go any louder)
It is the suck. I'm the OP on the HTC dock now available thread, I've had the thing a long time and had it apart, its power and ground with a jumper to ground pin 4..that's it..no data wires..that's also why it wont let u mount the usb...also the suck...hope that helps your problem..
Sent from my PC36100 using XDA App

Dock - Resistor Values (Car Dock, USB Audio Dock, Lite Dock)

Not sure if this is the right forum, but I'm making a custom car dock for my 05 Mazda 6.
The resistor value to kick it over to car dock is (This is using a Decade Box RS-200):
5-16 kOhms (4.939-16 kOhms from my meter resistor networks).
Haven't figured out if I can get audio through USB while in car dock. Seems playing with resistors and plugging/unplugging can get it stuck sending audio thorugh the D+/D- lines.
USB Audio (no car dock):
19-41 kOhms (24.6 kOhms from meter over resistor network)
Lite Dock Mode (no usb audio), effectively an alarm clock:
44-49 kOhms (44.4 kOhms from meter)
Install this between pins 4 and 5 of a micro usb connector (USB Cable will not work).
I'm going to get a surface mount component to reduce the size and integrate it into my card board mock-up of my car mount.

Updated with some new resistor values for other dock modes. Going to get a decade box and play some more with the values tomorrow.

Would def like to see more info and progress on this, seems to be very interesting.

g00s3y said:
Would def like to see more info and progress on this, seems to be very interesting.
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What are you looking for? I'm sorta stuck against the wall with things to try regarding getting intermediate modes.
I am curious to know what happens in the kernel, if this is a Hardware Switch or if there is an A/D measuring the pin and the Software is selecting which function to control. If I only had the time to dig into the AndroidSDK and figure it out.

Lol, I don't know anything technical about it, I just understand about 60% what you are saying and doing, it's interesting, that's all, sorry I couldn't be of actual help

Hi, I've been trying to get this to work with my thunderbolt and I'm not having any luck. I've tried the car mode and desk mode resistor values and neither are detected by the phone as being a dock. I have a Seidio home dock that is basically just passthrough USB. I've tried different ROMs too to see if it's a software problem, but with SoaB 1.3, BAMF Forever, CM7.1.1, and stock none of them auto launch dock mode. Any ideas?
Nevermind... it was a dumb mistake by me. I didn't realize that the board that I was soldering on was on the receptacle side and not the plug that goes into the phone. I was soldering the resistor to a pin that wasn't being used at all. I cut open the phone end of the dock and soldered it there and it works great now.

Can you post some pictures?

Would this work for Incredible S?
Back in the days of my Nexus S I used this values: http://forum.xda-developers.com/showthread.php?t=820275
Hope it helps..

How to force desktop dock mode using resistors?

Hi
I've got a Kidigi car dock which automatically triggers the car dock mode, and it's great! I now want to find a way of doing the same for the desktop dock mode when plugged into a cradle. I've ordered a Kidigi dock but I don't think it does this out of the box.
I've read of people using a resistor across pins 4 and 5 to trigger this on other HTC phones, and I think this is also how the car mode is done. Does anyone know what I might use... or is going to have to be trial and error?
I know that some people have hacked together pogo pins docks but I don't really need that (anyway I want the higher current AC charging).
I'd be grateful for any pointers
JAmes

How does it know it's a car dock?

How does the device knows it's a card dock? Is there a chip and special signal that gets sent through the micoUSB that tells it so? Right now I use an ExoMount and universal charger. I want it to recognize and go into "Driving Mode" when I plug it in. What do I need? Genuine Samsung car charger?

Would this be a good use for NFC?
Sent from my SAMSUNG-SGH-I317 using xda app-developers app

I don't have any NFC stickers handy. And that would be another step is to enable NFC and then have it scan.
I'm using Profile Scheduler and one of the Rules is to activate my Car Profile when it senses that it's been plugged into a car dock. So how does it know it's a car dock?

Other phones have a short across some pins to trigger a dock mode, so it may be the same here.
Sent from my Inspire 4G

spycedtx said:
Other phones have a short across some pins to trigger a dock mode, so it may be the same here.
Sent from my Inspire 4G
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I asked on Androidforums and someone said Samsung car docks have magnets that triggers car mode. Now to figure out where the magnet needs to be.

The original note went into car mode once you plugged the dock connection in. I dont think that has anything to do with magnets.
Nothing is going to trigger dock mode except a real dock. Car holders arent going to cut it

carhigh said:
The original note went into car mode once you plugged the dock connection in. I dont think that has anything to do with magnets.
Nothing is going to trigger dock mode except a real dock. Car holders arent going to cut it
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So you think the dock connection is somehow sending a signal to the device to activate car mode?

Some devices do use a magnet trigger, while others rely on a short across pins in the connector cable/prong.
Worse comes to worse, plenty of car/home/desk mode switching widgets.
Sent from my Inspire 4G

I'm currently using Profile Scheduler and a widget for it now. Looking to simplify 3 steps into one.

Samsung traditionally has used different resistor values between pins 4 and 5 on the microUSB port to tell it what it was dealing with...