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?

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

USB Host Not Working

Hi guys. So the only thing I've done to my i747 is root it. I've tried both of the USB host apps in the market (USB Host Controller and StickMount) as well as the "SGS3-Easy-UMS" apk that's around, v1.2beta2 and v1.3beta. Can't attach any USB devices. All my flash drives are FAT32 and work well normally. I even ran the USB Host Diagnostics app and it confirmed that Android API, Rooted API, and Kernel "claim support" but no device is detected.
When I connect to sync, I can only do MTP transfers. This is why I looked into that EasyUMS apk because it apparently also allows to mount the phone on the PC as a USB Mass Storage device. During my search I see numerous people connecting flash drives, controllers, keyboards, and even a USB HDD to their sgs3's.
Because that apk requires busybox, and I have busybox, everything looked OK. However, I did once get an error from that APK about possible non-existant Kernel support. USB Host Diags disagree, as do many video tutorials.
Basically I'd like to know whether or not this is supposed to be working, and if not, then how do I go about making it work? I'd like to mount flash drives for easier use with Linux, and would like to mount the phone as UMS for the same reason. I would also like to use a USB Keyboard as well as a USB gamepad. Am I missing something? Are they all using the international?

Are you using a USB OTG cable?
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

drothenberger said:
Are you using a USB OTG cable?
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
got this one, a couple good reviews confirmed that it works with input devices: Amazon product# B005GI2VMG
i mean it's very possible that the seller just buys from random manufacturers without changing the listing. this one that i have is like the cheapest thing on the market so that may be the problem. i wouldn't mind trying a different one for <$5 w/ US shipping if that exists (recommendations?).

Same cable didn't work for me
I bought the same cable, but from a different seller. Amazon ID number B005N55WHI
And I have the same problem. Tried using it with several input devices and with several different roms and I couldn't make it work. Could it be a power issue? Does the USB device that it is being hooked up to have to be powered? I tried it with mice, keyboards, and flash drives, but all of those devices take their power from the bus, not an external source.

glad you posted. hmm. since we both have the same thing and they're both not working, i'm suspecting it's indeed the cable.
i read on a review of a different cable on Amazon where the guy cut open the connector and found no wire connected to one of the pins. i've had thinner-cable wires before that charged/transferred slower than others or didn't work at all on some higher-end devices, could really just be a cheap-out on the manufacturer's end.
i think i'd like to get a different cable. if anyone can recommend an inexpensive one that's confirmed working i'd appreciate it. so i don't have to shoot in the dark.

I got the one with Amazon ID B00871Q5PI and it worked for me. I tried a Dell USB keyboard, a USB mouse, and a USB DAC and they all worked. All take power from the bus.
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

got this one.... http://www.amazon.com/dp/B005GI2VMG/ref=pe_175190_21431760_M2T1_ST1_3p_dp_1
would it make a difference if it says its for the galaxy s2 and not the s3? im guessing thats why i cant get it to work.

vvelvetelvis said:
got this one.... http://www.amazon.com/dp/B005GI2VMG/ref=pe_175190_21431760_M2T1_ST1_3p_dp_1
would it make a difference if it says its for the galaxy s2 and not the s3? im guessing thats why i cant get it to work.
Click to expand...
Click to collapse
No, would not make a difference. USB OTG is a standard and for now all devices that have USB OTG work with all USB OTG cables. I've used a cheapass one from Ebay with my S2/Note/S3 for more than a year now.

solved for me
so i got the one drothenberger got (actually that particular link was out of stock for the seller so i got the other suggested one that looks exactly the same, title OTG for SGS3 - item# B00871Q5PI) and i'm in business!!!
someone replied to my negative review of the other one i got in the comments and they said theirs worked. i think they just have different products under the same label or lots of defective ones. i'd recommend to just get the ones that specifically say OTG for SGS3 - the extra dollar or whatever is worth it to save the trouble.
thanks again to everyone for the troubleshooting, hope this topic helps others resolve their issues.

Bluetooth via OTG???

Hi all, ive gave up on the slim chance that there might be a BT chip inside the kindle fire 2. With the release of custom ROMs on our device, is it now possible to get bluetooth working via otg cable? I have a micro BT usb an was wanting to use it for ps3 compatibility so i can play ps1 roms etc wirelessly. I know you can connect a 360 controller cablde to the kindle but imn looking for wireless connectivity.

willieboya said:
Hi all, ive gave up on the slim chance that there might be a BT chip inside the kindle fire 2. With the release of custom ROMs on our device, is it now possible to get bluetooth working via otg cable? I have a micro BT usb an was wanting to use it for ps3 compatibility so i can play ps1 roms etc wirelessly. I know you can connect a 360 controller cablde to the kindle but imn looking for wireless connectivity.
Click to expand...
Click to collapse
I wasn't going to answer because I'm not a dev....but was curious so looked up some stuff.
From what I can see....I can't find anyone doing that, ever. Yet I see a LOT of people saying "No, not possible unless you get a custom ROM" yet....I haven't found anyone that has actually done this!
Not sure why, although since we have devs I will be curious to see their response. No idea why I can't find a SINGLE post of anyone doing it, yet I also haven't seen anyone that has flat out said no, only that you will need a custom ROM.
If we do get it working, it would probably be one of the first times someone has done bluetooth via OTG. If you can find anyone that has done it before though, that may help out.

iytrix said:
I wasn't going to answer because I'm not a dev....but was curious so looked up some stuff.
From what I can see....I can't find anyone doing that, ever. Yet I see a LOT of people saying "No, not possible unless you get a custom ROM" yet....I haven't found anyone that has actually done this!
Not sure why, although since we have devs I will be curious to see their response. No idea why I can't find a SINGLE post of anyone doing it, yet I also haven't seen anyone that has flat out said no, only that you will need a custom ROM.
If we do get it working, it would probably be one of the first times someone has done bluetooth via OTG. If you can find anyone that has done it before though, that may help out.
Click to expand...
Click to collapse
You can't really call it bluetoothe can you? if you use a wired soulotion it is a wireless protocol.

jutley said:
You can't really call it bluetoothe can you? if you use a wired soulotion it is a wireless protocol.
Click to expand...
Click to collapse
Just a usb bluetooth dongle. And, this is most likely never going to work on our device. We don't support usb host...

fmkilo said:
Just a usb bluetooth dongle. And, this is most likely never going to work on our device. We don't support usb host...
Click to expand...
Click to collapse
I seen on the kf1 forum that they have USB host to control a flash drive, Is it different to adding a BT adapter? Obviously you would need drivers for the specific BT adapter you were using
jutley said:
You can't really call it bluetoothe can you? if you use a wired soulotion it is a wireless protocol.
Click to expand...
Click to collapse
Not if u use a micro BT adapter an rip it apart and solder it to USB internally.
Sent from my Amazon Kindle Fire2 using xda app-developers app

willieboya said:
I seen on the kf1 forum that they have USB host to control a flash drive, Is it different to adding a BT adapter? Obviously you would need drivers for the specific BT adapter you were using
Not if u use a micro BT adapter an rip it apart and solder it to USB internally.
Sent from my Amazon Kindle Fire2 using xda app-developers app
Click to expand...
Click to collapse
They use powered hubs... our device wouldn't power the dongle, and you might fry it if you tried to hard wire it into the battery
FMKilo @ forum.xda-developers
freenode irc #kf2-dev

fmkilo said:
They use powered hubs... our device wouldn't power the dongle, and you might fry it if you tried to hard wire it into the battery
FMKilo @ forum.xda-developers
freenode irc #kf2-dev
Click to expand...
Click to collapse
well my plan was to buy a usb dongle, cheap ofcourse, put an external power supply, i.e 5v supply if i cant get one. for talking sakes lets say i use a battery ( i know voltage etc are not same as 5v supplied by normal usb ports) hook red + on battery, black to negative on the battery and add a switch so i can switch it on and off, so the only thing i would then need to take would be the data coming from the kindle itself. From what i can gather cm10 has bluetooth dongle support, if so then it would just be a case of an app looking at usb instead of internal bluetooth. Please correct me if i am wrong ( which i am pretty sure i am ). This is one feature which has let the kf2 down for me. All the others i can live with, even if i only had stock rom and it had bluettoth connectivity, it would be better for me. I hate having ideas but not being able to do anything about it so any advice, tips or reasons as to why it will not work is all good

While im on, does anyone have a kf2 with custom rom, a powered usb hub, an otg cable, a bluetooth dongle and a spare ten mins to check if the dongle is recognised by the kf?

willieboya said:
While im on, does anyone have a kf2 with custom rom, a powered usb hub, an otg cable, a bluetooth dongle and a spare ten mins to check if the dongle is recognised by the kf?
Click to expand...
Click to collapse
Sorry to revive this, but I have a kindle fire 2, rooted with the official cyanogenmod jellybean. I'm later going to order a bluetooth dongle and I already have a powered hub. Being a college student I have a lot of spare time to this sorta thing. I'll check back later if there are replies or if i have done it and have results.
EDIT:
Although some people on this thread have already said that bluetooth doesn't work without a powered hub, you can find videos demonstrating it without a powered hub. I'll also test this later.

Cm10 + otg + bt dongle = works!
I recently about an Onda V973 specifically so that I can load CM onto it but was disappointed that BT wasn't built-in. So I got an OTG cable and a cheap dongle. At first the connection didn't work but after a reboot CM was able to load the drivers for the dongle. Works great! :good:

I am 99% sure Kindle Fire does not have a bluetooth chip. I tried it myself on CM10.2, 10.1, and it doesn't activate. The modem does not have this feature.
It would be interesting to try and mod the tablet that way, though.