Develop Bugs

USB Host On Evo?

sven.killig.de/android/N1/2.2/usb_host/ This method enables you to host usb devices from your Nexus 1. Is it possible do this on Evo also?

Looks like it might only be for Froyo, but then again not sure.

He writes it should work for 2.1 but even for Froyo (custom ROM ) it would be great

I am working on a few custom roms right now but when I'm done with that I'm gonna start working on some kernels including this exact feature.

MOD EDIT - Moved to Q&A

my question is "does the hardware of the evo support usb host mode?" I know the evo shares a lot with the nexus one and other current gen htc phones so I'm hoping so.

BUMP!
omg please... anyone have the gear to try this... i guess im gonna have to take some stuff apart..

chuckhriczko said:
I am working on a few custom roms right now but when I'm done with that I'm gonna start working on some kernels including this exact feature.
Click to expand...
Click to collapse
If/when you are ready, let me now. I have keen interest in this.
Here's what I know:
1) The EVO has no power supply to power the USB device (so you will need a powered hub or cable hack).
2) HTC loves to (seemingly) use the fifth pin as a way to know that the car charging dock is in use so there is a strong possibility that auto-sensing a USB host cable will not work; it will have to be entered via software in some other way. It could be that this switch is actually HTC's own software running and detecting it; I've never dug in enough to know.
3) The Snapdragon processor has the hardware to support USB host and there is a project that Qualcomm has to support the features of their processors witih Android which is (presumably?) where these drivers came from: https://www.codeaurora.org/xwiki/bin/QAEP/
I'm willing to support such a project with my (limited) knowledge and cash. Let me know who's interested

bsnguy said:
I'm willing to support such a project with my (limited) knowledge and cash. Let me know who's interested
Click to expand...
Click to collapse
I have the micro-usb to female OTG cable on it's way, and a powered usb hub that i'm gonna hack. from there, as long as the kernel has support and there are modules to load...

j4s0nc said:
I have the micro-usb to female OTG cable on it's way, and a powered usb hub that i'm gonna hack. from there, as long as the kernel has support and there are modules to load...
Click to expand...
Click to collapse
I've done this. There is no built-in support on Android 2.1 or 2.2 from HTC on the EVO. At least no support for flash media. We will need to add the driver from here (or something similar):
HTC HD2 Kernel with support for USB Host. Same processor and probably similar internals, too. I don't have to the time to get up-to-speed on downloading/building/deploying kernels (and I'm not rooted, yet, on the EVO). I have an HD2 and I might try their stuff on that as it looks like it's "done" so I can see how well it works (or not).

Just got the cable today. Checking out these links and trying things now...
thanks for the pointers. I'm running cyanogen nightly 8-1... so far, i get:
D/Tethering( 102): interfaceAdded :usb0
from logcat when i plug my hacked (routed dc+ voltage from a nearby
+5v pin to the upstream cable red wire) powered usb hub into this OTG cable.
The EVO charges when i have it all plugged in as well...

j4s0nc said:
Just got the cable today. Checking out these links and trying things now...
thanks for the pointers. I'm running cyanogen nightly 8-1... so far, i get:
D/Tethering( 102): interfaceAdded :usb0
from logcat when i plug my hacked (routed dc+ voltage from a nearby
+5v pin to the upstream cable red wire) powered usb hub into this OTG cable.
The EVO charges when i have it all plugged in as well...
Click to expand...
Click to collapse
What's on the other end of the cable? Just the hub? The "D/Tethering" message probably shows up with nothing connected at all (did you see that or try that?) I suspect that's a listener on usb0 to see if a host is plugged in to allow tethering with the phone.

Was there any progress / update on this after you plugged into the USB hub? Have you tried it with anything else?

bsnguy said:
... I don't have to the time to get up-to-speed on downloading/building/deploying kernels...
Click to expand...
Click to collapse
Kinda in the same boat here. I lost a lot of steam after my last post. I did the hardware part no prob but just hit a wall with the rest. And since flashing CM6 final I can't adb or even charge the EVO unless i have the micro usb otg cable plugged into a male-to-male usb extension plugged into AC adapter. Gonna flash back to another ROM to make sure it's just software related, but I really don't wanna lose my wiimote and apple wireless keyboard compatibility.

bump
just curious as to the status of usb hosting on the HTC EVO.

well i'll say this
IF it is supported in froyo natively
you dont need to make a custom hacked usb host cable
you can buy a motorola host adapter for micro-usb made for the new motorola es400 which supports usb host operation.

eigerzoom said:
well i'll say this
IF it is supported in froyo natively
you dont need to make a custom hacked usb host cable
you can buy a motorola host adapter for micro-usb made for the new motorola es400 which supports usb host operation.
Click to expand...
Click to collapse
Not quite that simple.
There is no power supplied from the EVO so you will, at a minimum, have to supply a powered USB hub or a self-powered device, and you will also need the low-level driver to turn on the USB hsot support in the Snapdragon processor.

looking for info on the evo shift...if anyone happens to have any info or leads.
thanks

New development on Motorola Droid
http://www.tombom.co.uk/blog/?p=124
This would be so cool and useful if someone gets this working good on the Evo

Looks like they have this working on the Desire HD:
http://forum.xda-developers.com/showthread.php?t=993152
It's a similar device to the Evo, so maybe there is hope for the Evo to get it?

EVO as a USB Host?

Hey guys, i don't know if this has been addressed before or not. Is it possible to use the Evo as a USB Host, that is to say, (in my case) connect my DSLR to my Evo and download pictures so i can upload them to tumblr etc or flash drives to get files etc.
or am i just shooting in the dark here?

Possible (check)
Would help if you were well-versed in the art of Linux and mounting

indeed. but sadly, i am not. but! i am willing to donate to a helpful soul that is!

SilverStone641 said:
indeed. but sadly, i am not. but! i am willing to donate to a helpful soul that is!
Click to expand...
Click to collapse
Heres your best bet.
http://sven.killig.de/android/N1/2.2/usb_host/
It's for the nexus on froyo but it could still work
If I had the right cable i'd test it for you.
This oughta work too
http://jkontherun.com/2010/02/17/how-to-add-a-usb-keyboard-to-an-android-phone/

that looks like it'll work for keyboard or other INPUT devices, but would it work with external storage?

SilverStone641 said:
that looks like it'll work for keyboard or other INPUT devices, but would it work with external storage?
Click to expand...
Click to collapse
are you kidding me? youre a senior member, read a bit, perhaps scroll down the page.
USB storage
insmod drivers/usb/storage/usb-storage.ko
# Wait for device enumeration
mount -t vfat /dev/block/sda1 /mnt/sdcard/usb-storage
Click to expand...
Click to collapse
do you have a cable to even connect the two? micro to mini (if its a canon/nikon, if im not mistaken) micro to micro (pentax), beause else you'll need a powered hub according to the first link posted.

I just thought to start researching the status of otg usb and usb host mode on the evo. And to my surprise this is the only crappy thread I've come across. I cannot find an anwser as to if the evo has the hardware to support it. I know that the n1 droid and maybe the incredible support usb host mode even if u need a single its still something I want to know. I would drool over connecting usb flash drives, keyboards, game controllers etc to my evo. Someone else please show interest in this.

i concur. i'd love to be able to plug my ipod/DSLR/flash drive into my phone to upload/download files. i'd be willing to donate to make this happen

The list is endless... MIDI Controllers, extra screens, ethernet, fingerprint reader, wtvr.
Just got the cable today. Checking out these
http://forum.xda-developers.com/showthread.php?t=696446
...links and trying things now...
thanks for the pointers. I'm running cyanogen nightly 8-1... so far, i get:
D/Tethering( 102): interfaceAdded :usb0
from logcat when i plug my hacked (routed dc+ voltage from a nearby
+5v pin to the upstream cable red wire) powered usb hub into this OTG cable.
The EVO charges when i have it all plugged in as well...

Looks like they have this working on the Desire HD:
http://forum.xda-developers.com/showthread.php?t=993152
It's a similar device to the Evo, so maybe there is hope for the Evo to get it?

would like to bring this one back I just got a program called DSL controller it says my phone wont do usb host. Not sure if there is a kernel I need or if there is a ROM I can run etc.

I just ordered the cable I need for my phone and camera. So if anyone knows of a ROM that may do this please advise.

Any one try this yet? Do not want to spend the money till I see some one had it working

I too desperately wanted this to work... After buying the host-mode cable, trying various methods to allow "host-mode" on the evo, and trying a bazillion different combinations of settings - the DSLR controller software *always* gives me a "your device does not support USB host mode" error. I'm afraid this is dead in the water. DSLR Controller does, however, work nicely on my Asus Transformer tablet

Kernel with USB Host functionality

This is a question to the Developers here on XDA, especially the ones that are developing for the Desire HD.
I would like to point this out http://forum.xda-developers.com/showthread.php?t=694427
Like you readers have already read it's about USB Host functionality on the Nexus One.
On the following link you will find a thread of this being ported to the HTC Desire
http://forum.xda-developers.com/showthread.php?t=702742
The Question is, if there someone who knows how to get this to work on the HTC Desire HD and is willing to do that? It's not a practical functionality but it's sure is cool to have the possibility to connect your external HD, USB Controller, USB Mouse or whatever USB device on your Desire HD.
From my little knowledge i think that the modules need to be implemented in a Kernel, Maybe it would be a nice project for someone who works on Kernels? I don't know how to support the Desire HD with this feature, I hope someone can.
Kind Regards,
Shar!ngaN

I looked at this last night, but without having an adapter, I cannot test it.
I can however build you a kernel with USB Host compiled in tonight when I get home.
Would be nice to know if it will actually work
Send me a PM if you are interested.
Edit: Thanks for those links Interesting reading and info I need.
Edit 2: Adapter ordered.

leppie said:
I looked at this last night, but without having an adapter, I cannot test it.
I can however build you a kernel with USB Host compiled in tonight when I get home.
Would be nice to know if it will actually work
Send me a PM if you are interested.
Edit: Thanks for those links Interesting reading and info I need.
Edit 2: Adapter ordered.
Click to expand...
Click to collapse
I've ordered an USB Host adapter around December last year, but it still hasn't arrived. So i actually cannot test it at this stage. However i would like to see that Kernel and would love to test it (As soon as my adapter arrives).
Thanks

Question: Do you only need an adapter to connect normal size USB to mini USB? Will the dhd have enough power/voltage to run a flashstick so you don't need external power?
If i only need an adapter i'm in for testing if it's compatible with CM7
I have an adapter lying around from using it on my N900 that had USB otg/host mode

From the video's i saw of Sven Killig's, that's the man who achieved USB Host functionality on the Nexus One. He powered his USB devices trough a self-powered USB hub.

@Shar!ngaN: As soon as I get my adapter, I will start messing with it.
But as you know with DealExtreme, that can take up to 30 days to arrive.

Yes i'm quite sure you will need an external self-powered hub.
I have already purchased all the equipment i need so i just need to get into the nitty gritty of modifying the phone. I need help on this!!

I have been playing with compiling this functionality into a custom kernel, but I dont know if everything is ok.
Will read up on the other phone's thread to see if I missing something.
@Mr. Blobby: Are you willing to reflash your kernel? This will be a requirement.

Ok that's no problem, and thank you very much,
Yes i am willing to do that, however i have been told it is very risky and you need to know what you are doing when carrying out the process. As a result, i am waiting to find out if someone can help me with it as i know nothing about smartphones and i don't want to end up breaking the phone.
Thanks alot.

I have the adapter and im awaiting the kernel (hope it works with the Telus version)

Flashing the kernel is not risky as long as you backup first. Use Rom manager.
Sent from my Desire HD using XDA App

ooo ok thats a relief thanks!!
can someone please tell me what i first need to do? do i first need to root the phone as it is not yet rooted. If so, how do i go about doing it without 'bricking' the phone?
Thanks!!

Bump, any news on this

Dousan said:
Bump, any news on this
Click to expand...
Click to collapse
I'm still waiting too
i've got all the cables and stuff i just need to know how to re-flash kernel and root the phone etc

Anybody got it working allready?
I've gut the stuff to do it but i have no idea how to build the kernels and stuff

will be great to see it on an cm7 kernel

Too bad, still nothing

From the https://github.com/CyanogenMod/android_vendor_cyanogen/blob/gingerbread/CHANGELOG.mkdn, it seems that CyanogenMod has got USB Host included from version 7.1.0.
I am using the JellyBean - Jelly Time ROM and wish to use my DSLR via the USB host feature, but not sure how to do it yet I have the OTG cable(http://cgi.ebay.in/ws/eBayISAPI.dll?ViewItem&item=170844328875).
Any pointers anyone?

CM doesn't have USB host for all devices. In the change log - "Encore: USB host support - Verygreen". That's only for s specific device. If it was listed as 'Common' then it would be for all devices.
Sent from my Desire HD using xda premium

Anyway to connect a hard drive?

I've searched all over, because a while back I thought I seen a post somewhere about hooking up external usb devices to the phone, but I can't find it anymore. Is there an adapter or special cord that will allow you to hook up your DINC 2 to an external hard drive?
Sent from my DINC2 in Yuma, AZ

It would be nice if there was also a way to plug a flashdrive into the charger connection on the side of the phone and be able to read from that. People could have special collections of apps and roms that could be shared with friends by simply letting them plug in your flash drive. I honestly don't understand why this hasn't been an option. why couldnt a flash drive be pluged into one of these adapters (http://www.google.com/products/cata...=X&ei=PRh6Ts68OqrQiAKClK3JDw&ved=0CL0BEPMCMAM). from here it would just be a matter of the phone being able to read the information off the flashdrive, which im sure some developers could find a way..

As far as I know, the main issue is whether or not the USB port supports a USB host function. It's similar to the concept of a computer being able to support high-def video but not having an HDMI-out port through which to broadcast the signal. Then the second hurdle to jump over is whether or not a USB Host Stack has been written/and or provided in the software. That's where a dev would be able to write a stack (not very easy) for the phone.
Here's a little reading on the subject.
http://developer.android.com/guide/topics/usb/host.html

lightninjay said:
As far as I know, the main issue is whether or not the USB port supports a USB host function. It's similar to the concept of a computer being able to support high-def video but not having an HDMI-out port through which to broadcast the signal. Then the second hurdle to jump over is whether or not a USB Host Stack has been written/and or provided in the software. That's where a dev would be able to write a stack (not very easy) for the phone.
Here's a little reading on the subject.
http://developer.android.com/guide/topics/usb/host.html
Click to expand...
Click to collapse
That is some good reading.. Heres some more I found about it.
http://forum.xda-developers.com/showthread.php?t=751535

Maybe I should have read this when I haven't been drinking. I might understand a little better. But it sounds like a lot of work. I would be willing to donate like 50 bucks if someone could get this working for the DINC2 and my external hard drive.
Sent from my DINC2 in Yuma, AZ

'twould be cool

This would be very cool. I hope that someone can do something with this. I'd be willing to donate to the cause

I found something that might work, I haven't got it to work myself though.
Sent from my DINC2

I was intrigued and googled your image. Found and installed USB Host Controller but it said the phone does not have the OTG or HOST driver installed. On the app page it links to Nexus One USB Host project page saying Snapdragon/HTC supported kernels can be found there or something along that nature. From what I can gather it would need to be added into a kernel something which I have no idea how to do. Also, it sounds like ICS will support this feature by default so I doubt the devs will go out of their way to implement it. One can always dream though . Hope that helps!

Then what happened?

why not just toggle USB mode and use your computer as a "External" HDD.........

danielholm said:
Then what happened?
Click to expand...
Click to collapse
Absolutely nothing. It was a failed attempt.
Sent from my DINC2

dets34 said:
why not just toggle USB mode and use your computer as a "External" HDD.........
Click to expand...
Click to collapse
Because at the time, my computer took a dump and no longer worked. But I recently got a new one.
Sent from my DINC2

Yea who doesn't want to lug around an external hardrive? The chicks dig the extra space
Sent from my ADR6350 using xda app-developers app

[Q] A100 w/3.2 does not work in USB Accessory Mode

I have an Acer Iconia A100 Tablet with Adroid Honeycomb 3.2. I also have an Arduino-compatible board with USB Shield. (Arduino is an open source hardware platform that enables Android tablets/phones to do things like machine control over the Universal Serial Bus.)
My A100 won't communicate through the USB port to the board. I know it's not designed to work in USB Host mode, but this setup is designed for tablets with USB Accessory mode. Other posts say that Android 3.2 devices are supposed to work in USB Accessory Mode and with the Android ADK. (Note that I did enable "USB Debugging" in Settings - Applications - Development.)
Here is a picture of what I am trying to do:
www(Dot)seeedstudio(Dot)com/wiki/File:SeeeduinoADK_Setup.jpg
The Android phone can toggle an LED and receive input from a variable resistor. USB Power is provided by the board, not the phone.
I'm trying to troubleshoot why the A100 does not recognize anything connected to its USB port. Yes, I can transfer files to a PC over the USB, but that's about it.
I downloaded a terminal emulator app to my A100. When I put "USB devices" into the terminal emualtor, it never sees any devices connected -- not even my PC when I transfer files.
Another post talks about installing "Taboonay" on an Acer A500 unit to allow it to work in USB Accessory mode, but I could find nothing equivalent for the A100.
Can something be done to get the Acer A100/3.2 to work in USB Accessory mode?

This is a very interesting post.
First let me say I'm a noob but I will do the best I can with what I know.
I'm not sure if we will get full USB host or at least accessory mode. I think it will always be a multi-part issue. I think the micro USB port the A100 comes with doesn't the correct pins to provide power to ANY USB device. So what ever device is connected has to supply its own power. If this is correct I don't a way around having to supply any USB device external power(this doesn't seem like a major issue just a limitation).
At first I figured we could just use a powered USB hub and we would be good to go I guess not... at least not yet.
However on other devices developers here have been able to rewrite a USB driver to enable other modes and features. Right now the hope is that this can eventually be done. I don't think a solution is currently available. It does sound like you might of assistance in furthering that cause however and would encourage you join us all in seeing what we can get our A100s to do.
I hope this information was helpful for you.

NoSudo said:
the micro USB port the A100 comes with doesn't the correct pins to provide power to ANY USB device. So what ever device is connected has to supply its own power. If this is correct I don't a way around having to supply any USB device external power(this doesn't seem like a major issue just a limitation).
Click to expand...
Click to collapse
You are correct, the micro USB port will not supply power to devices connected to it, even if it did it would drain the battery even quicker than what it does.
In order to get USB host / accessory mode to work the most we can do at the moment is compile a kernel module for it and try to load it in the current running kernel via insmod. Right now such a thing does not exist, but hopefully if I ever get some free time and if no one else has done it I'll be able to do it.
Sent from my MB860 using XDA App

Thanks to crossix and NoSudo for the replies. I have been beating my head against the wall for weeks trying to understand my problem. Apparently, some Honeycomb 3.2 devices can operate in USB Accessory Mode and some cannot. I could not find anything in the Acer A100 specs that addressed this, and Acer Tech Support has not been helpful.
One question: If the unit can somehow get upgraded to "Ice Cream Sandwich," would that solve the USB Accessory Mode problem?

roc524 said:
Thanks to crossix and NoSudo for the replies. I have been beating my head against the wall for weeks trying to understand my problem. Apparently, some Honeycomb 3.2 devices can operate in USB Accessory Mode and some cannot. I could not find anything in the Acer A100 specs that addressed this, and Acer Tech Support has not been helpful.
One question: If the unit can somehow get upgraded to "Ice Cream Sandwich," would that solve the USB Accessory Mode problem?
Click to expand...
Click to collapse
No, ICS will not.. but if they enable the functions at the time they build the kernel that might do it.
Sent from my moto atrix running jokersax CM9 (ICS)!

crossix said:
No, ICS will not.. but if they enable the functions at the time they build the kernel that might do it.
Sent from my moto atrix running jokersax CM9 (ICS)!
Click to expand...
Click to collapse
That is right... assuming they have a driver for such a thing. Since it seems they are basing their kernel on the Ventana board, I don't see why not.

crossix said:
No, ICS will not.. but if they enable the functions at the time they build the kernel that might do it.
Sent from my moto atrix running jokersax CM9 (ICS)!
Click to expand...
Click to collapse
Off subject, but geez dude, how many devices do you have? I find your posts all over xda with a different "sent from my ________" all the time! Lol
ummmmm............ could you repeat that?

6stringandy said:
Off subject, but geez dude, how many devices do you have? I find your posts all over xda with a different "sent from my ________" all the time! Lol
ummmmm............ could you repeat that?
Click to expand...
Click to collapse
The MB860 is the Atrix. I should know, I'm running Joker's CM9 on it too

lol, I've been on these forums for a few years, so I've got a few different phones I've gone through including a palm treo 750, htc kaiser, the g1, nokia e75, htc aria, iphone 3gs, lg quantium and now the atrix.. I think my next phone is gonna be a tegra3
Sent from my moto atrix running jokersax CM9 (ICS)!

Ripped off by USB Capabilities
Recall that I have an Acer A100 with Android 3.2 and micro USB port that will not work in "USB Accessory" mode as the operating system would have me believe. How can I avoid a similar problem with my next tablet purchase? Could I have checked the tablet's specs more thoroughly? I feel ripped off and would like to know how to buy more intelligently in the future. Acer tech support does not have a clue about this and does not care.
Thanks to the respondents of this post.

yeah, as they said, the micro-usb port on board won't supply power to devices connected through it.
I tried THIS but didn't work, so, maybe if we could make an usb to micro-usb cable with its own power supply it could work (not sure at all)

USB Accessory Mode not Host Mode
Thanks, but the USB power is not an issue here. The board I am using (www(dot)seeedstudio(dot)com/depot/seeeduino-adk-main-board-p-846.html) receives external power. My tablet is supposed to operate in USB accessory mode in which it can send out USB information to this board which provides power.
I am trying to find out, before I buy my next one, whether the phone/tablet can handle this "USB Accessory mode." Some devices can handle it as per this picture: www(dot)seeedstudio(dot)com/wiki/File:SeeeduinoADK_Setup.jpg. The Acer A100 cannot. How could I have determined this before I bought it??

roc524 said:
Thanks, but the USB power is not an issue here. The board I am using (www(dot)seeedstudio(dot)com/depot/seeeduino-adk-main-board-p-846.html) receives external power. My tablet is supposed to operate in USB accessory mode in which it can send out USB information to this board which provides power.
I am trying to find out, before I buy my next one, whether the phone/tablet can handle this "USB Accessory mode." Some devices can handle it as per this picture: www(dot)seeedstudio(dot)com/wiki/File:SeeeduinoADK_Setup.jpg. The Acer A100 cannot. How could I have determined this before I bought it??
Click to expand...
Click to collapse
The best way to test something like that out is to bring something that requires being plugged into a usb to operate (like your keyboard) or you could Google "<device name> tech specs".
Sent from my ADR6400L using xda premium

Any news on this ...?
Has a usb driver been developed or something (will it be on ics )?
crossix said:
You are correct, the micro USB port will not supply power to devices connected to it, even if it did it would drain the battery even quicker than what it does.
In order to get USB host / accessory mode to work the most we can do at the moment is compile a kernel module for it and try to load it in the current running kernel via insmod. Right now such a thing does not exist, but hopefully if I ever get some free time and if no one else has done it I'll be able to do it.
Sent from my MB860 using XDA App
Click to expand...
Click to collapse
Crossix did you have time to check this...?
Thanx...
Sent from my A100 using Tapatalk

Thanks for all the work, would love this on my tablet as well.

In the service manual I have found the scheme of our motherboard. Our device's HARDWARE doesn't support USB host at all.

New here, I just bought an Acer A100 specifically for using it with the android ADK based off this (apparently I can't post links? ok just google "Tablets and the Android Open Accessory Development Kit (ADK)" and click on the first result) website's recommendation. And now I find that it doesn't work at all? Nothing I can do about this?