USB OTG

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:

To mount third, NTFS partition to /sdcard/usb2 directory:

To unmount:
su
umount /sdcard/usb1

redoano said:

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?

Click to expand...

Click to collapse

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

rawrfische said:

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

Click to expand...

Click to collapse

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.

rawrfische said:

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.

Click to expand...

Click to collapse

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.

luis4ever said:

Not working on ViperS 1.1.0.

Phone connected to OTG Cable, USB Male-Male from OTG to HUB. Flash Memory to HUB and HUB to power. usb created in root of SdCard. Am i missing something?

Click to expand...

Click to collapse

On ViperS 1.1.0 files from USB storage won't be added to Media Library because this ROM is based on HTC Ville C2 ROM and it hasn't added /sdcard/usb directory to storage list. But if you connected everything correctly, USB storage should be still automatically mounted to /sdcard/usb.
Did you flash Overclocked kernel v1.5.1?
Run command ls /dev/block in Terminal Emulator and check if output contains sda and sda1. If not, send me your logcat and dmesg log.

luis4ever said:

Which rom are you running with Host working? Also, should i use TE with or without OTG connected?

This is what i get without OTG connected:

Click to expand...

Click to collapse

With connected USB OTG cable and USB peripheral.
If output doesn't contain sda and sda1:
1. Reboot your phone.
2. Connect everything after boot.
3. Run commands: logcat -d -v time > /sdcard/logcat.txt, ls -l -R /sys > /sdcard/sys.txt, dmesg > /sdcard/dmesg.txt in Terminal Emulator.
4. Send me or upload these three files from your SD card.