AllWinner T8 - Not showing USB connection when using cable from Laptop - Android Head-Units

I have tried several different cables and no success. Every time I plug a USB Cable into my old laptop (Dell Precision M4600) and into the USB Cable from the AllWinner T8 head unit, it does not recognize that there is a USB Connected. I have no idea what I'm doing and I was wondering if anyone had any ideas? I've tried all four USB ports on the laptop (3.0 and 2.0), a monoprice male a to male a usb data cable, a QVS 3 feet 'high speed' 2.0 data cable, a transfer cable (added to computer as F: drive, unable to access headunit files and PhoenixSuite did not detect Android Device nor did my computer beyond Portable Device listing 'F:'). I have uninstalled drivers, updated drivers, made sure there are no unknown devices. Plugging into the laptop nothing is added in device manager, so I'm clueless at this point.
USB Debugging is on. USB is set to use MTP, not charging. It doesn't even show up as recognized. I used terminal emulator to check and see if as 'su' if there were any devices using adb devices, nothing showed.
When I use my phone charger cable, plug into the usb cable from headunit and into phone it recognizes the device. When I plug the charger cable from phone into laptop, it recognizes phone. When I use the same exact cable with an adapter to convert to Male A, it does not detect a usb device connected on either end. No device under Device Manager, no 'usb connected' on head unit.
Does anyone have any idea what I need to do for the head unit to recognize that there is a USB Cable connected?

Both your Laptop and your HU are USB Hosts. Hosts cannot communicate. Only a host with clients.
Some HU can be switched to client mode in some Setting page, usually hard to find. And often client mode is then active only on one specific USB port of the HU.
And note, not all HUs have the capability at all.
If you want to use adb, then try via WiFi.

realzoulou said:
Both your Laptop and your HU are USB Hosts. Hosts cannot communicate. Only a host with clients.
Some HU can be switched to client mode in some Setting page, usually hard to find. And often client mode is then active only on one specific USB port of the HU.
And note, not all HUs have the capability at all.
If you want to use adb, then try via WiFi.
Click to expand...
Click to collapse
Is there anyway around this? I'd like to try and upgrade the head unit from 7.1.2 to 8.1 but if I can't get the unit to communicate then I am out of luck.

MrStuffing said:
Is there anyway around this? I'd like to try and upgrade the head unit from 7.1.2 to 8.1 but if I can't get the unit to communicate then I am out of luck.
Click to expand...
Click to collapse
Hi, can you finally update?

Related

Mini USB to Serial Cable?

Hey guys!
I've searched and searched for something to allow me to transfer data via a serial cable from my phone to device.
Let me try to explain this.
HTC Wizard
Windows Mobile 6 (Explore 1.1)
I have style tap (palm os emulator)
Software for palm os for a stand alone fuel managment system (msefi.com)
So on my car, I use a serial cable to program and get realtime data.
Now I know they make bluetooth to serial adapters for around 70, but I was wondering if they make a mini usb to serial cable for the Mobile OS.
Anyone have any ideas?
Thanks
Chris
Well, you could theoretically get a USB to serial adapter that has a cable. Then cut the USB connector that goes to the PC off the cable and just splice the miniusb plug onto the end. I don't know about device support though I'm going to guess you would have to at least come up with a driver and the device might not support that type of functionality at all anyways.
Since the Wizard doesn't have a USB Host (aka USB OTG) the short answer is no. Even more importantly, the wizard won't power the serial adapter so the device is a dud to begin with.
The odds that the BT to RS232 connector method will work are far greater than the USB method.

Using wifi modules usb port for another device

Hi everyone,
I was developing a tablet application for controlling a circuit but now i stuck here somewhere.. there are a few options that i think about what to do after this stage. I need 2 usb ports , one for a usb serial converter (namely pl-2303) and other one is a standart flash drive. I tried to use a hub connected to an OTG cable with no luck. When i plug only one of my devices to OTG port they all work but when i plug 2 of them to hub system freeze or doesn't mount my flash drive. I tried 3 different hubs they are not working. Sometimes i made this setup running with an sd card reader instead of flash and a digitus converter instead of pl-2303. Then i though this can be an issue with the USB 1.1 - 2.0 specifications because pl-2303 is a USB 1.1 device and the rest is 2.0.
After i realize the realtek wifi module in the tablet is also mounted to a USB port i removed the module to check if i can connect one of my devices to that port. But as usual the wifi driver of the system is controlling this port , so when i try to power up the port, system checks if it can find the realtek module and when it cant detect realtek wireless module just shuts down the port back. While this happens i can see my device is connected to system for a few seconds before the driver shut it down.
So this is the all story. I just need this 2 device to work together. I am waiting for your opinions
The tablet is a ATM 7021 processor based cheap tablet.
Thanks in advance.

USB - Wiring for ADB?

Hi folks!
I want to connect an android device (it has usb slots... i can plug there 3g dongles, keyboards, wifi etc) with my computer to try to establish an adb session.
Is that possible like that (usb male - male)? Do i have to solder a custom cable - and how would he wiring be to force the android into "client mode"?
Any help is highly appreciated!
licht77 said:
Hi folks!
I want to connect an android device (it has usb slots... i can plug there 3g dongles, keyboards, wifi etc) with my computer to try to establish an adb session.
Is that possible like that (usb male - male)? Do i have to solder a custom cable - and how would he wiring be to force the android into "client mode"?
Any help is highly appreciated!
Click to expand...
Click to collapse
to wiring an usb cable is not so hard. normally you only need to solder the same coloured wire together, red to red, white to white, green to green and black to black. but there are already male to male cable to buy.
www.dx.com/p/ult-unite-ult-1234-usb...lated-data-connection-cable-white-60cm-269067
what does your android device have for an usb? is it micro usb or standard (type a)?
if you have a micro usb port so use an usb data cable, most of the charging cable does have data transfer support.
your computer even needs a driver for your android device to get working the adb.
good luck!
ps. on ytube there a lot vids how to... only search and destroy ( your android)
KindsKoPP said:
to wiring an usb cable is not so hard. normally you only need to solder the same coloured wire together, red to red, white to white, green to green and black to black.
ps. on ytube there a lot vids how to... only search and destroy ( your android)
Click to expand...
Click to collapse
Hi! Thanks for your help! Its a type A jack on that device just like on the computer. Adbd daemon is on the device running but my windows machine cannot detect an usb device with direct soldered pins (or a bought cable which seems to have the same wiring)
I read about possible collitions when both devices of an usb connection are in host mode and that maybe pullup resistors on the data lines are needed - but i didnt fully understand that part. (Its different to the pin shortening of an usb otg wiring which can be found thousand times on google *G*)
can u describe exactly which cable u have used? and sometime the colors of the cable are not correct e.g. red is not +. those are build by chinese manufactures for cheaps goods. so u have even to measure the cable with a voltmeter.
and describe what happen when u plug the cable in the pc. normally windows is always running as main and android as slave.
as you describe u have an usb a type so i guess your android version is minimum 4.x and is already automatically on host status because you said u can put in a 3g dongle...so u have to go to the android command change from inside. i dont know much about linux programming so have to ask a developer. i only do developing hardwares not softwares, sorry for that.
what is your android device? with a datasheet is it better to solve your problem.
Hi KindsKoPP!
Thanks for your help and interest!
Basically I tested with a 1 to 1 wired cable I soldered by cutting 2 usb cables. I double checked colors (measured their output when connected to the computer) and found them ok. Then I connected them 1 to 1 (red-red, black-black, green-green, white-white).
But no usb device showing up or asking for drivers...
I know that adbd is running on the target device.
I pulled up some info here: http://www.valki.com/2014/12/04/analyse-av7/
I am still hoping that those usb devices who are in a double role (like our phones too with their usb otg host mode and client mode for mtp, adb...) are triggerable externally by using special soldered cables (resistors?) ... like "when resistor xy is on D+ -> go to client mode"?

USB connection not detected by Windows 10

Can anyone suggest how to make windows 10 recognize the phone when connected via USB cable?
Latest official android version and USB debugging enabled.
Which cable are you using for connection to the computer? the cable that comes with the phone is for charging only, you'll need a data cable for connection.
Some users have reported issues when flashing or sideloading using a USB 2.0 cable. The cable included with PH-1 is USB 2.0 and is primarily intended for charging. If you're flashing or sideloading PH-1, we recommend using a high-quality, spec-compliant USB 3.0 (or higher) cable.
ive used both 2.0 and 3.0, but never the 3.1 USB C style. never had an issue, but some of the cables look premium and are cheap crap that connect and disconnect on a whim because the pins arent contacting unless the cable is perfectly straight
I'm using this cable: https://www.amazon.com/gp/product/B01N5KL10L/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
It is supposed to be a data cable and looks pretty decent.
Are any special drivers required ? ( I have installed the USB driver found on the Essential support page but no dice)
I have those same cables, they are a bit touchy when it comes to staying connected especially in a USB 2.0 port. Make sure you're using a 3.0 port and once it connects, don't move it much. Not a great solution I know but what can you do.
I tend to leave Device Manager open when I install new hardware. It often helps understand the sequence of things. Do you hear the Windows Device Connected Sound? If nothing is showing up there, it's the USB cable
Well.. I got my phone last Wednesday and I just got the issue when I got USB3.0 to USB C cable last Friday. (my main PCs do not have USB-C port)
The symptom is;
connecting USB cable and change connection mode to "file transfer" or MTP, it looked going to connect, but actually failed or disconnected when I tried browse the device or copy files.
After few research, I could resolve the issue.
Here are the what I did.
First, I have to download and install USB driver from Essential home page. (check "Essential Developers" page. I cannot add link here yet because I'm newbie here.)
Second, Now I got connection, but still the connection was unstable especially when I copied big files (about 200~300MB or more). The issue could be resolved after turning on "Disable USB audio routing" option in "Developer Options". (You should enable the "Developer Options" first)
Third, Now I have no problem on Windows PC connection, but I got a problem with Ubuntu 16.04. And I have found the it happens only when I connect it via USB hub. After connecting to PC directly, the issue has gone.
I have no problem on USB connection with my PCs now.

Can't connect Zlink Android Auto wired/wireless

Hi,
I'm using S22 Ultra with the latest version of Zlink installed on my BMW F32. I am unable to connect android auto via usb; nothing opens after plugging the phone in. Apple Carplay works wirelessly.
However, wirelessly the phone is able to connect, but android auto won't open. My phone attempts to open android auto but it would just close right away.
I've followed various instructions from other treads such as android auto developer mode settings as well as the Bluetooth/hotspot settings but no luck.
Any help is appreciated, thanks!
Hi, I would look, if connection is on wire, that USB port is activated and not ver. 1.1 but higher and faster port like 2.0. or 3.0.
On the other hand, see that autolink option, if you have one in facory settings, is activated.
Anton TNT said:
Hi, I would look, if connection is on wire, that USB port is activated and not ver. 1.1 but higher and faster port like 2.0. or 3.0.
On the other hand, see that autolink option, if you have one in facory settings, is activated.
Click to expand...
Click to collapse
How do I check if it's 2.0 or 3.0?
nicchiang9 said:
How do I check if it's 2.0 or 3.0?
Click to expand...
Click to collapse
Insert if you have some USB drive 2.0/3.0 in port USB.
If system finds USB drive it is ok if not it is 1.1
I plug it it via usb and android auto doesn't load. Seems it's not detected
Anton TNT said:
Insert if you have some USB drive 2.0/3.0 in port USB.
If system finds USB drive it is ok if not it is 1.1
Click to expand...
Click to collapse
Try with older USB drive or USB cable that is meant for ver. 1.1
Sometimes if you have multiple ports in car (USB) correct one is USB that don't have 5V (charger for mobile phones) but regular ones 3V 2.1 Ampere
I have the same problem on my android head unit with a xiaomi 12.
The pictures could be mine, exactly the same.
Did you find a solution?

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