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USB OTG

OP SebastianFM

7th August 2012, 08:10 PM   |  #1  
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When you connect USB OTG Adapter to the phone it is switched into USB Host mode. The board of HTC Sensation isn't capable of giving power to USB peripherals, so USB Y Cable or USB Hub with external power supply is required to connect USB peripherals to the phone. You can connect different types of USB peripherals: USB Hub, USB mass storage devices (e. g. USB HDD, USB Stick, MP3 player), USB HID devices (e. g. USB mouse, USB keyboard, Wireless mouse or keyboard with USB receiver).



Requirements:


Micro USB Host OTG Cable with USB power
or
USB OTG Adapter + USB Y Cable
or
USB OTG Adapter + USB Hub with external power supply

My Overclocked kernel (v1.5.2 or newer) for HTC Sensation
My Overclocked kernel (v1.4.0 or newer) for HTC Rezound

/sdcard/usb
Create usb directory on the root of your SD card.

/system/etc/vold.fstab
If you want to enable automatic mounting of USB mass storage devices to /sdcard/usb directory by the system, you need modified vold.fstab. This file is included in my kernel package and will be updated during install.

Tested USB peripherals:

LogiLink USB Hub with 4 USB ports.
Seagate 250GB USB HDD.
Sandisk CRUZER 4 GB USB stick.
Sandisk Sansa Clip MP3 with 2 GB storage.
Logitech USB mouse.
Logitech Wireless mouse and keyboard with USB receiver.

USB mass storage devices:

If you connect USB mass storage device then first FAT/FAT32 partition (if any) will be mounted automatically to /sdcard/usb directory and Media Library will index its content. Files can be viewed using Gallery, Music or any file manager. It won't happen if other USB mass storage device already has automatically mounted partition.

You can manually mount FAT, FAT32 and NTFS partitions.
For example, to mount first, FAT/FAT32 partition to /sdcard/usb1 directory:
Code:
su
mkdir /sdcard/usb1
mount -t vfat -o rw,dirsync,nosuid,nodev,noexec,uid=1000,gid=1015,dmask=0702 /dev/block/sda1 /mnt/sdcard/usb1
To mount third, NTFS partition to /sdcard/usb2 directory:
Code:
su
mkdir /sdcard/usb2
mount -t ntfs -o rw,dirsync,nosuid,nodev,noexec,uid=1000,gid=1015,dmask=0702 /dev/block/sda3 /mnt/sdcard/usb2
To unmount:
su
umount /sdcard/usb1





Last edited by SebastianFM; 3rd September 2012 at 12:05 PM.
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7th August 2012, 08:25 PM   |  #2  
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Yessss, this is the progress we were waiting for, thanks for your work. we need external power source on hdd, but do we also need it on usb sticks?
Last edited by redoano; 7th August 2012 at 08:55 PM.
7th August 2012, 08:35 PM   |  #3  
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Quote:
Originally Posted by redoano

Yessss, this is the development we were waiting for, thanks for your work. we need external power source on hdd, but do we also need it on usb sticks?

Unfortunatelly yes. But there is one advantage of this, it saves battery.
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7th August 2012, 08:47 PM   |  #4  
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Quote:
Originally Posted by SebastianFM

Unfortunatelly yes. But there is one advantage of this, it saves battery.

This is amazing, yet again your kernel proves the best, so happy I came back.

Going to order cable now!

Sent from my SuperSensation.
ViperS ROM 1.1.0.
D-SHEL Undervoltage mod.
Anker battery.
7th August 2012, 08:50 PM   |  #5  
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No problem for me I always carry a usb cable with me =) From now on i will carry the one also with female standard usb socket, it seems Can i use it with vipers?
Last edited by redoano; 8th August 2012 at 12:11 AM.
7th August 2012, 09:54 PM   |  #6  
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Amazing and cool.
Sebastian so as allways.
But where o can get the right sensation xe cable?
Has someone a link or a hint, thank you.
7th August 2012, 10:12 PM   |  #7  
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Super kernel stuff again! Great work sebastion!!
7th August 2012, 10:27 PM   |  #8  
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So in theory, you could use this with a USB y-cable and a rechargeable USB battery pack, right?

/edit

I just realized you would need a USB OTG y-cable with a male and female connector at the split. I'm not even sure such a cable exists.
Last edited by rawrfische; 7th August 2012 at 10:49 PM.
7th August 2012, 11:07 PM   |  #9  
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Quote:
Originally Posted by rawrfische

So in theory, you could use this with a USB y-cable and a rechargeable USB battery pack, right?

Yes, there shouldn't be any differences in connecting second plug of USB Y-cable into USB charger, USB power supply, PC, car USB charger or USB battery pack.

Quote:
Originally Posted by rawrfische

I just realized you would need a USB OTG y-cable with a male and female connector at the split. I'm not even sure such a cable exists.

No. You need common USB Host cable (Micro USB Male <-> USB A Female). If you haven't USB HUB with external power supply, you also need USB y-cable (2 x USB A Male <-> USB Mini Male). This is standard cable used to connect USB HDD when single USB port provides insufficient power.
To connect e. g. USB Stick, you must use USB A Female to Mini USB Female Adapter at the end.
Last edited by SebastianFM; 7th August 2012 at 11:37 PM.
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8th August 2012, 12:00 AM   |  #10  
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Where can i buy this set? Thanks

Verstuurd van mijn GT-P7500 met Tapatalk

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