Develop Bugs

Activating Evo Car Dock Mode?

So I'm searching and coming up somewhat empty handed.
Is it possible to engage Car Dock mode on the Evo via magnets, ala the Droid?
I'm also finding information regarding shorting pin 4 of the MicroUSB port to engage Car Dock Mode, but I'm also finding information saying that shorting pin 4 just tells the phone it's on a 'proper' USB charger.
So what's the deal? Do we even know how to engage Car Dock mode via hardware?

I believe HTC uses a 5th pin to let it know it's on a car dock.
Sent from my PC36100

rafroehlich2 said:
I believe HTC uses a 5th pin to let it know it's on a car dock.
Sent from my PC36100
Click to expand...
Click to collapse
USB Micro B calls for 5 pins -
Pin 1 is 5+, 5 is Signal ground
Pins 2 and 3 are Data+ and Data-
Pin 4 is listed as an 'ID' pin - if connected to ground, it's supposed to show a detection of 'Type A', if not grounded, then 'Type B'
I would think if pin 4 is utilized as 'grounded means 1000mAh charger vs USB's usual 500mAh' then how would the Evo differentiate between 'wall charger' and 'car dock'?

and the purpose of car dock mode and wanting to use it is.... ?????

You can manually launch the Car Panel from the launcher. Is there something else about dock mode that you're missing?

dallashigh said:
You can manually launch the Car Panel from the launcher. Is there something else about dock mode that you're missing?
Click to expand...
Click to collapse
Nope, just wanting to know how the phone detects it should go into Car Dock mode.
Looks like nobody's sure how.

[Q] 1amp car charger not working

I bought this USB car charger. It's 1 amp. But it doesn't work with my Galaxy SII. The phone alternates rapidly between charging and discharging. Anybody know why? I've tried 4 different USB cables.

It shouldn't go between charging and discharging unless its faulty or somethings loose. As far as whether or not the phone will draw 1 amp from it you would need to either put a multi meter and test for continuity between the two data pins or open it up and look with your eyes.
I personally tried and succeeded with a dollar store unit which is trace shorted on the circuit to make the phone think it is Samsung as its designed to.

Short the two middle pins
Sent from my Samsung Galaxy SII using Tapatalk 2 Beta 5

KIDIGI DOCK - AC charge fix!

Hi!
All owners of Kidigi car dock should read and do this!
I got a Kidigi car dock with charger. The first thing I tried was putting the phone on the included charger - and indeed, it did charge in "AC mode" (aka 1000mA max).
Then I installed the cradle, connected the charger to the cradle and started using it.
But after 2 days I noticed it doesn't really charge when navigating or recording - and it was not an overheat issue. So today I looked again and it was charging in USB mode!
Apparently, the good folks at Kidigi screwed up the connection inside the dock (probably to trigger Car mode and forgot to connect it all).
The fix:
1) unscrew the four visible screws on the back of the dock (not the 4 center ones)
2) unscrew the fifth screw under the label on top
3) unscrew the phillips screw that holds the connector
4) short PINs on the phone side labelled D- and D+ (I just used a blob of solder)
5) that's it
Now it triggers Car mode AND charges in AC.
This fix is essential for anybody using this dock, and I'll be mailing Kidigi shortly to let them know they screwed up...

mine charges mine fine whilst using GPS and Bluetooth.
Not a quick charge tho but it definitely charges more than discharges if that makes sense .
I will check the pins tho thanks =)
+
I hope this wasn't on purpose for the sake of overheating?
Sent from my cm_tenderloin using xda premium

colemanuk said:
mine charges mine fine whilst using GPS and Bluetooth.
Not a quick charge tho but it definitely charges more than discharges if that makes sense .
I will check the pins tho thanks =)
+
I hope this wasn't on purpose for the sake of overheating?
Sent from my cm_tenderloin using xda premium
Click to expand...
Click to collapse
It doesn't overheat from charging, but from using it (Navigation, recording, video...). AC charging does no harm in this respect (nor does it help).
You'll notice it when something is running and the brightness is on full - USB charging will not feed the phone and it will start to discharge.

So is this a problem at the charger end if so I have a belkin 1amp charger I can use.
I understand the data pins have to be shorted for it to see the AC mode.
In my power menu both the chargers I have say AC whether plugged in through the dock
or just to the cable and charger without the dock.
surely this means its OK or would show usb am I wrong?
I've opened the dock and can't see for the life of me the name on the pins +
my soldering skills are a bit much to be desired when working this small
Sent from my cm_tenderloin using xda premium

colemanuk said:
So is this a problem at the charger end if so I have a belkin 1amp charger I can use.
I understand the data pins have to be shorted for it to see the AC mode.
In my power menu both the chargers I have say AC whether plugged in through the dock
or just to the cable and charger without the dock.surely this means its OK or would show DC am I wrong?
I've opened the dock and can't see for the life of me the name on the pins +
my soldering skills are a bit much to be desired when working this small
Sent from my cm_tenderloin using xda premium
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Click to collapse
No, the problem is inside the cradle itself - even though pins on your charger are shorted, they are not even connected through the cradle connector. You have to short them at the cradle connector.
Btw all chargers will work as AC then
Strange that it shows AC for you, are you sure it's right? Can you make a photo of the connector? Maybe you got a different revision or something...

zvieratko said:
No, the problem is inside the cradle itself - even though pins on your charger are shorted, they are not even connected through the cradle connector. You have to short them at the cradle connector.
Btw all chargers will work as AC then
Strange that it shows AC for you, are you sure it's right? Can you make a photo of the connector? Maybe you got a different revision or something...
Click to expand...
Click to collapse
Yes it definately shows AC for both my chargers whether plugged through the cradle or not.
Does yours show USB or something? Like I said mine does charge all be it very slowly when using copilot.
Is the writing for the pins obvious for you as I swear I have none
Sent from my cm_tenderloin using xda premium

I'll be damned!
Plug phone in dock then plug in charger (shows AC!)
Plug charger in FIRST then put phone in dock shows USB!
In the instructions they say to do it the first way I think.
I wonder if it is charging AC then hmmmmmm?
Sent from my cm_tenderloin using xda premium

I got mine today and found it was charging in AC when I tried either way!

optiknerv said:
I got mine today and found it was charging in AC when I tried either way!
Click to expand...
Click to collapse
WTH maybe some of you got an updated version

zvieratko said:
WTH maybe some of you got an updated version
Click to expand...
Click to collapse
Gonna go get dressed ( I'm having a lazy morning ) and i will double check but I swear its fine
EDIT : Confirmed mine is fine. I checked with the bundled charger cable as well as my own and whether the plug is in before the HOX is in the cradle or after, power settings shows "Charging AC" in all cases. I haven't seen USB charging at all with the cradle. They must have realised their mistake and fixed it.

Today the car dock Kidigi arrived.
When connecting the phone, I noticed that there is recharged via USB.
Through this tip, Is now loaded by AC ....!
BIG [email protected] zvieratko.
(Sorry for my bad English)

Seems I'm the only one with a working dock out the box!!

Mine is aslo writing AC charge, but it is definitelly not AC charge. Going to fix it

I'm definitely curious how mine is going to work.
Ordered mine last week through ebay, so I hope it's a late build without the problem.
'Cause I don't have a blob or solder or whatever can fix this thing...

Hi guys,
I recently bought one of these Kidigi car mounts for my HTX One X and have found that the battery will slowly drain (about 1% every 10 mins) when I have it docked and am using sat nav (Google Nav or Co-Pilot). My battery app says that the phone is charging (estimates about 6 hours to charge 30%).
I've checked the charging method and it shows that it's charging via AC (not USB).
I've tried a few things like running Co-Pilot in power saving mode, dimming the screen, closing down all over background apps, but my battery still slowly drains.
Do you think this soldering fix might help?
Thanks all.

AC or USB changing
Hi, i've brought various chargers off ebay and other sources and even when the phone reports AC charging i've had leads that use wire so thin that the phone cant get the high current charging to work.

Check that your adapter is providing more than 500 mA. Certainly I've had no trouble with it charging the phone while navigating.

I have a question regarding this mod. I bought this charger and am fixing to recenter the microusb port to properly mate with otterbox commuter case still on. The OP states to just short the 2 data pins together, but I'm wondering if I should do this with a resistor to load balance the lines or if that is even necessary?

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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Click to collapse
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
Click to expand...
Click to collapse
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...

Doesn't charge enough to maintain screen?

Hi
Used my Note II for the first time on a long journey using google navigation, and even though it was plugged in throughout the battery was draining. According to current widget it was getting1698mA from my car socket whicj is the same as I get with the mains charger (sounds suspiciously identical in fact so I wonder whether its accurate..)
I'm using one of those 3 amp 2 socket chargers plugged into the 2 amp socket.
Surely it should be possible to charge and use at the same time? I can't believe it should be using over 1.6 amps to maintain the screen?
Sent from my GT-N7100 using xda app-developers app

Pics attached
Sent from my GT-N7100 using xda app-developers app

gingerprince said:
Pics attached
Sent from my GT-N7100 using xda app-developers app
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Click to collapse
Maybe you are not getting a constant uninterrupted charge. I had a similar problem with a TomTom SatNav, it was constantly letting me know the charger had just been reconnected. The quality and length of the cable is an important factor too. I discovered using a 3 metre cable at home caused my charger to struggle to keep up with the phone's demand. Changing the cable solved the problem immediately.

Not had any charger disconnected messages, and charging icon seems solid. Will try another cable though.
Ta
Sent from my GT-N7100 using xda app-developers app

gingerprince said:
Pics attached
Sent from my GT-N7100 using xda app-developers app
Click to expand...
Click to collapse
Make sure to check the Battery option of the settings screen while the charger is plugged in. You'll see either (AC) or (USB) next to "Charging", and that will tell you whether the USB car charger has the data pins shorted.
(USB) means the car charger doesn't have the data pins shorted, and the phone will not try to draw any more than 0.5A from the device. With CPU usage, and the screen on, this will definitely drain your battery. I remember it doing this with my Galaxy Nexus before, and the Note is no different - it needs even more power!
(AC) means the data pins are shorted (The middle two pins in a 4-pin USB connector), which means the device conforms to the USB charging spec. Lots of chargers that are designed for Apple devices don't have them shorted, because Apple doesn't use this to determine what charging speed it can charge at.
I'm in the process of looking for a good wall charger and a car charger that does a consistent 1.8A (The technical max for the Note II), as I have gone through several wall and car chargers that do not have data pins shorted.
Basically, the charging device needs three things:
1) Circuitry capable of delivering enough power: If the electric supply is only capable of providing a shaky 0.4A, then you might not want to use the charger
2) Shorted data pins: If the phone sees the data pins are shorted, it will try to draw more than 500mA, or 0.5A. The phone has to know that it's safe to try, though.
3) Good circuitry: If the first two are true, but the power is unreliable, the Android phone will only take as much power as the power supply can reliably give, minus 100mA. This means if a power charger is "capable" of 1A, AND has the data pins shorted, but it can only provide 400mA cleanly, then your phone will only ever draw 300mA from it.
There's an under-used program on the play store called "Galaxy Charging Current" - and it shows the three variables on the phone, "charging_now", "charging_max", and "charging_avg" - watching these when you have a charger plugged in can help you figure out what type of charger you have.