[USB-HOST] Contour ShuttleXpress support

[Dj-Gutz]

I'm trying to get my Countour Shuttlexpress working with usb host ( using cm7 nightlies )
I've already posted some of this in the usb-host thread but seems there is not much devs traffic there LINK
So I've decided to open a new thread hoping for some interest and maybe info for others who want to write/port their own usb-host drivers

Eventually what I'm trying to achieve is :
Jog Wheel - Controls system/media volume
Shuttle Knob - PREV/NEXT song on PowerAmp app
Buttons - Launch Apps , Jump To Screen #n , Run Terminal Commands

That's on the basic level of things
I don't have any coding skills in Linux ( I do know some java and c/c++ And I'm a fast learner )
In the past few days I've been setting up my first developing enviorment with Ubuntu 10.04 and learned a couple of things about android coding

Lets get back to the device
For now it's recognized as an HID device , and I can use getevent to get each function specific code
But nothing is mapped to any real function on the nook

Here is some info from the nook :

DMESG Log :

<6>usb 1-1.2: new low speed USB device using musb_hdrc and address 4
<7>usb 1-1.2: skipped 1 descriptor after interface
<7>usb 1-1.2: default language 0x0409
<3>usb 1-1.2: device v0b33 p0020 is not supported
<7>usb 1-1.2: udev 4, busnum 1, minor = 3
<6>usb 1-1.2: New USB device found, idVendor=0b33, idProduct=0020
<6>usb 1-1.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0
<6>usb 1-1.2: Product: ShuttleXpress
<6>usb 1-1.2: Manufacturer: Contour Design
<7>usb 1-1.2: uevent
<7>usb 1-1.2: usb_probe_device
<6>usb 1-1.2: configuration #1 chosen from 1 choice
<7>usb 1-1.2: adding 1-1.2:1.0 (config #1, interface 0)
<7>usb 1-1.2:1.0: uevent
<7>usbserial_generic 1-1.2:1.0: usb_probe_interface
<7>usbserial_generic 1-1.2:1.0: usb_probe_interface - got id
<7>usbhid 1-1.2:1.0: usb_probe_interface
<7>usbhid 1-1.2:1.0: usb_probe_interface - got id
<6>input: Contour Design ShuttleXpress as /devices/platform/musb_hdrc/usb1/1-1/1-1.2/1-1.2:1.0/input/input4
<6>generic-usb 0003:0B33:0020.0001: input: USB HID v1.10 Device [Contour Design ShuttleXpress] on usb-musb_hdrc-1.2/input0
<7>drivers/usb/core/inode.c: creating file '004'
<1>##- Data length: 2

/proc/bus/input/devices

I: Bus=0003 Vendor=0b33 Product=0020 Version=0110
N: Name="Contour Design ShuttleXpress"
P: Phys=usb-musb_hdrc-1.2/input0
S: Sysfs=/devices/platform/musb_hdrc/usb1/1-1/1-1.2/1-1.2:1.0/input/input7
U: Uniq=
H: Handlers=mouse3 event7
B: EV=17
B: KEY=1fff 0 0 0 0 0 0 0 0
B: REL=180
B: MSC=10

*the logs are from different sessions

using "getevent /dev/input/event7" I captured the events and isolated them

Buttons : ( numbered from left to right )
1.

Press -
0004 0004 00090005
0001 0104 00000001
0000 0000 00000000
Release -
0004 0004 00090005
0001 0104 00000000
0000 0000 00000000

2.

Press - 
0004 0004 00090006
0001 0105 00000001
0000 0000 00000000
Release - 
0004 0004 00090006
0001 0105 00000000
0000 0000 00000000

3.

Press - 
0004 0004 00090007
0001 0106 00000001
0000 0000 00000000
Release -
0004 0004 00090007
0001 0106 00000000
0000 0000 00000000

4.

Press -
0004 0004 00090008
0001 0107 00000001
0000 0000 00000000
Release -
0004 0004 00090008
0001 0107 00000000
0000 0000 00000000

5.

Press - 
0004 0004 00090009
0001 0108 00000001
0000 0000 00000000
Release - 
0004 0004 00090009
0001 0108 00000000
0000 0000 00000000

Jog Wheel :

From -
0002 0007 00000001
0000 0000 00000000
To -
0002 0007 000000ff
0000 0000 00000000

Shuttle Knob :

Full right -
0002 0008 00000007
0002 0007 00000001
0000 0000 00000000
Full left -
0002 0008 fffffff9
0002 0007 00000001
0000 0000 00000000

So , I have a few ideas on how to do it and I thought you might help me figure out the best way and guide me through it :

1. Using Tasker and write a script using Locale Execute plugin with getevent & other commands - Probably highly in-efficient and maybe slow?
2. Write an app to run in the background , intercept the events and execute commands every x ms? How much is needed for a quick response?
3. Write a driver ( or kernel module? ) for the device
4. Maybe I can use the HID driver to do that?
5. Port one of the sources I listed down to Android?
6. Another thing I haven't thought of?

I have found a couple of things that might help

powermate.c in dalingrin's kernel seems to contain some code for it but I couldn't find any real thing that it does to it besides define the device
GITHUB Link

Here are some source codes for Linux ( which I thought at first to be drivers but they seem to be handlers/applications )
https://init.linpro.no/pipermail/skolelinux.no/cinelerra/2006-March/005665.html
http://www.reynwar.net/gnuradio/epydoc/gnuradio.wxgui.powermate-pysrc.html

Can I use the code from USB Mouse support and adapt it for my own input device? will it even work on CM7 since it's built for Iconia?

I've also looked into usbled.c in the kernel , comparing it to the original code from here http://www.linuxjournal.com/article/7353
It seems pretty much the same , so maybe porting the handler is the best and easiest way?

Any help would be appreciated , in the last 3 days I've read so much on linux/android developing and still feels like I know nothing

Thanks ,
Gutz

 

[gyounut]

will it work with the shuttle pro 2, too ?

 

[Dj-Gutz]

There is a code for the shuttle pro and v2 as well here
http://www.reynwar.net/gnuradio/epydoc/gnuradio.wxgui.powermate-pysrc.html

Its an handler written with python , I need to find out if I can port this to Android
If I'll eventually port some of the code from there I'll try to include the v2 code aswell..

 

[guisar]

Did you get this going? Would be very interested.

 

[Dj-Gutz]

oh memories

I did get this going eventually pretty easily using an app called "usb/bt joystick center"
I tried looking for it but it's not on the play store anymore , a google search did came up with some apk sources so just try them out
If you need any help pm me - I haven't touched it in years but I might remember / can dig up some old files to help

Good luck

 

[hassbruk]

Any news on that old topic ?

I just bought a ShuttleXpress for a Nexus in car project thinking it would be straightforward, but it seems that its not..

 

[freshollie]

Any news on that old topic ?

I just bought a ShuttleXpress for a Nexus in car project thinking it would be straightforward, but it seems that its not..

@hassbruk I have written a driver for this, which is implemented in my controller app. Checkout my github (freshollie) for more info.