Database Users

USB Host

Can anyone confirm that the Universal does not have USB host. Most places just say no but there isn't really any hard evidence of it. I know the processor supports it but did they put in the necessary circuitry for it? Whats strange is that the Universal's miniUSB port is the same as my Sharp Zaurus's miniUSB port and my USB host adapter fits in. Does not fit into normal miniUSB ports. Just the Zaurus which had USB host and the HTC Universal. Just seemed a bit odd to me. I tried it of course and did not do anything.
I'll experiment with this further and check that image of the mainboard closely.

everybody who posted about it in this forum reported it to not support host
connector means nothing all htc devices since the universal have had the same connector
heck these days they are talking about making it the std connector for all phones nokia and the likes too

This all hinges on the connector, and the hardware used to drive the connector. The Universal(and indedd, all mobile devices) use mini-USB connectors, which do NOT incorporate a host control circuit. This means that, since USB uses a protocol that might be termed as "Speak when spoken to", your device can answer the computer when it asks, it can NOT ask another device to speak to it.
To sum it up, you can't connect a pendrive to your PDA, but you can connect it to your computer, precisely because of the lack of the USB host controller unit.
Hope this cleared it up for you...
Cheers

This is not what I meant. I'm talking about a specific type of miniUSB connector.
And in the recent announcement to make a standard cell phone connector, they chose microUSB.
This is what I mean.
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HTC Universal's miniUSB port.
A normal miniUSB port.
My miniUSB -> USB host adapter from my Sharp Zaurus fits into only the Zaurus and the HTC Universal. Doesn't do anything in the HTC Universal though.

Not possible.
If you check on the internals, you will find that there is no power output to the usb port in anyway. so, its a hardware limitation and there is no way it will support hosting, be rest assured!
San

http://en.wikipedia.org/wiki/USB
host vs. peripherals
connectors mean nothing

I found a thread in the German PPCWelt.info forum where several people say that there MDA Pro supported USB host, with a special driver:
http://www.ppc-welt.info/community/showthread.php?t=74113&highlight=mda+pro+usb+host
I don't know how reliable this is (not every USB client can act as a USB host because of different hardware AND software), but perhaps you want to try it.
Alex
EDIT: They also say that your USB device needs a power supply because the MDA can't do that (external hub). Other people even say that without such a power supply your MDA could be damaged. This Engadget article is also mentioned:
http://www.engadget.com/2005/09/02/youve-got-htc-universal-questions-weve-got-htc-universal/
EDIT2: http://forum.xda-developers.com/viewtopic.php?t=26742&start=25 (with an official statement of HTC: no, it WON'T work.)

Rudegar said:
http://en.wikipedia.org/wiki/USB
host vs. peripherals
connectors mean nothing
Click to expand...
Click to collapse
I know that. I just wanted to know if the hardware was there for it thats all.

the hardware maybe there deep inside the cpu but the pcb lanes where maybe support chips were never connected rendering it absent

can some of german guys test it and report it to this thread.?>

USB OTG Interface behavior VS USB Interface?

Hi, I am relatively new to digital 'prototyping' so USB protocols and almost everything digital is new to me.
The long and short of my question is, if I plugged a standard USB flash drive into an OTG adapter, and then plugged all that into a micro USB to standard USB (which I doubt actually exists) and plugged that combo into a PC, would I be able to access the flash drive? How exactly do OTG devices VS 'regular' USB devices work?
From the circuit schematics I've studied, it appears that the only difference between a standard USB and OTG interface is a bridge across pins 4 and 5. So how would this affect plugging said OTG device into a PC?

Yes. Long as your device supports it.
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That is my $2 otg adapter...I plug in external HDD...flash drives ...keyboard... Mouse...PlayStation controller..
.tech you can make your own BC the pin config is only diff.
Sent from my Galaxy Nexus using Tapatalk 2

So if I directly hardmodded a standard USB flash drive with a micro USB plug, bridging pins 4 and 5 to make the device OTG-ready, if I plugged that now hardmodded flash drive into a micro USB (female) to USB A (male) the PC would still read the drive as a standard flash drive?
This makes sense because apparently on the micro-usb interface, pin 4 is "sense"?

Elite83 said:
So if I directly hardmodded a standard USB flash drive with a micro USB plug, bridging pins 4 and 5 to make the device OTG-ready, if I plugged that now hardmodded flash drive into a micro USB (female) to USB A (male) the PC would still read the drive as a standard flash drive?
This makes sense because apparently on the micro-usb interface, pin 4 is "sense"?
Click to expand...
Click to collapse
Yes .
Sent from my Galaxy Nexus using Tapatalk 2

Thank you for your assistance.

Yes/no.
The standard (full-size) USB A and B connectors only have 4 contacts and 4 conductors.
The ID pin (#4) is only on USB mini and micro connectors.
You need to signal your cell phone to go into host mode.
That means that the connector plugged directly into the cell phone has to have a grounded pin #4.
Pin #4 is never carried over the cable.
In short, you need an OTG adapter plugged into your cell phone.
Modding other parts of the cable or the USB device you are using won't do anything.
You can (as I have done) take a razor to the connector that plugs into your cell phone,
take the connector apart and solder a wire from pin #4 to ground.

[GUIDE] Lapdock + Pi = ARM Laptop!

After playing around with a few different cables and set ups I final have a Pi powered laptop with great battery life!
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Below is a simple guide to what I used to set everything up including cables needed etc.
Feel free to reply if you have any questions about the set up or to share your own Pi laptops!
---------- What is needed? ----------
Raspberry Pi
Motorola Lapdock - I have the original for the Atrix but any with the micro HDMI and USB ports should work fine
Sdcard - I have a 8GB card but really what ever size you want
USB Male to Male Adapter - HERE
USB 2.0 A Female to Micro 5pin Female Cable - HERE
Micro HDMI male to female - HERE
HDMI Male to Micro HDMI Female Adapter - HERE
You will likely also want a case for your Pi, I have used this one HERE but feel free to use any case really.
To complete the laptop you might also want to use a Wifi usb card, I found this one HERE works very well out of the box.
---------- How to get it all working? ----------
The most important thing to remember is that the lapdock will not give power via the usb port until there is an HDMI connection, so the HDMI cable will need to be connected first.
All you need to do is plug it all together but once I have pictures sorted I shall post an actual step by step.

What's the battery life like?

jnewman1991 said:
What's the battery life like?
Click to expand...
Click to collapse
From a day or using it I have gotten about 10 hours, but the biggest downside to the set up is that the lapdock does not report its battery life via the usb port so you only get the 5 lights on the front of it for indication.
I plan to in the next few days do some actual battery tests (constant running of video etc) to see what it can make

According to Amazon it has 7 hours battery life

OnePlus Type-C Bullets Earphones don't work for OnePlus 2?

I purchased a pair of OnePlus Type-C Bullets Earphones. The description says there is an internal DAC. But the phone doesn't recognize the USB audio.
I've searched the forum, and someone said they work https://forum.xda-developers.com/oneplus-2/accessories/oneplus2-supports-type-c-headphones-t3842450
The "Disable USB Audio Routing" in developers option is set to OFF already.
I don't have a USB-C female to USB male adapter so I can't test the earphones on my PC.
I'm currently using Lineage OS 16.0 nightly. Is it Lineage OS's bug? I have not tried stock ROM yet, anyone?
 @aviraxp

They won't work
FERR0US said:
I purchased a pair of OnePlus Type-C Bullets Earphones. The description says there is an internal DAC. But the phone doesn't recognize the USB audio.
I've searched the forum, and someone said they work https://forum.xda-developers.com/oneplus-2/accessories/oneplus2-supports-type-c-headphones-t3842450
The "Disable USB Audio Routing" in developers option is set to OFF already.
I don't have a USB-C female to USB male adapter so I can't test the earphones on my PC.
I'm currently using Lineage OS 16.0 nightly. Is it Lineage OS's bug? I have not tried stock ROM yet, anyone?
@aviraxp
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Please check before buying. OnePlus 2 uses the very first USB C version and it's outdated (There are different versions of USB C, similar to USB A). Any OTG or headphones with USB C functionality won't work on OP2. Hope that solved your problem.
Screenshot link in case attachment is not visible : Check out the product link, tips section
Note that they haven't mentioned OnePlus 2.

liquidpotato said:
Any OTG or headphones with USB C functionality won't work on OP2.
Click to expand...
Click to collapse
But OTG for USB storage do work for me?

FERR0US said:
But OTG for USB storage do work for me?
Click to expand...
Click to collapse
I'm not sure why, maybe because the OTG's version matches with the phone's. I have tried like 6-7 products and none of them seemed to work for me. The only way I could get it to work was by using a USB C to micro-USB converter and a normal OTG (not type C). But that's irrelevant, what matters is that type C bullets won't work.
I use the normal bullets with headphone jack.

Using an External Harddrive via OTG cable

Will using an External Harddrive via OTG break my Note 7 in the long run ? Or just drain my battery faster ? Currently it works just fine

Why would it break? It will drain the battery while in use of course.

Gonime said:
Why would it break? It will drain the battery while in use of course.
Click to expand...
Click to collapse
I'm assuming it'll heat up faster or stress the other components ?

Usually, when I connect pendrives, I just plug them. But when I have to connect hard drives, I always use external power: 12v for big ones (wall), and my portable power bank for the 2.5" ones.

Please elaborate.
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[/IMG]
CrashOverride93 said:
Usually, when I connect pendrives, I just plug them. But when I have to connect hard drives, I always use external power: 12v for big ones (wall), and my portable power bank for the 2.5" ones.
Click to expand...
Click to collapse
My Zenfone Max Pro M1 supports 2tb external HDD on its own but battery drains faster. I want to use Powerbank as external power supply. But my OTG Y cable isn't working that way. I want HDD to draw power from external supply only and not my smartphone. Is it possible to do that.
Could you describe how you do it ?

pramod2259 said:
[/IMG]
My Zenfone Max Pro M1 supports 2tb external HDD on its own but battery drains faster. I want to use Powerbank as external power supply. But my OTG Y cable isn't working that way. I want HDD to draw power from external supply only and not my smartphone. Is it possible to do that.
Could you describe how you do it ?
Click to expand...
Click to collapse
I solved it using a USB (3.0) hub (from Orico which has a dedicated micro USB 2.0 port for external power supply ) and a powerbank. Advantage being the mobile battery isn't being discharged as much in poweering the HDD if at all. Now no issue in reading from 4TB (2.5") ones. This is for Poco F1 (couldn't handle more than 1TB) but I see no reason it why it shouldn't work for other handsets as well. Curiously Redmi Note 3 and even the lowly Redmi 3s have zero issues powering even 4TB HDDs on their own. (I tried this method in Redmi 3s but the HDD LED keeps on blinking and isn't detected)
Edit: If your laptop supports USB Sleep and Charge (powering USB even when shutdown/hibernated) it will work as an alternative to a powerbank.