Re: [SLUG] USB HID IR device - how generic can I go?

[Angus Lees]

At Sat, 8 May 2004 10:38:33 +1000, Jeff Waugh wrote:
 So I got this USB IR port and remote bundled with my DVB card. I'd
 kinda like a generic IrDA port to use with my phone and iPaq, so I'm
 wondering if I can use this one.

I think I read somewhere that IR remotes and IrDA use quite different
hardware-level protocols so you can't turn one into the other.

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 - Gus
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[SLUG] USB HID IR device - how generic can I go?

[Jeff Waugh]

Hey gang,

So I got this USB IR port and remote bundled with my DVB card. I'd kinda
like a generic IrDA port to use with my phone and iPaq, so I'm wondering if
I can use this one.

What worries me is that it comes up as a USB HID mouse and keyboard device,
which is kinda cool for use with the remote, but I don't know if that'll let
me use it with the IrDA stack. I get the vague impression from some Googling
that the HID stuff is just a layer on top of the standard IrDA stuff that
the hardware already does, and Linux might be able to talk to both at the
same time. *attempts to wave hands intelligently*

I've popped lsusb -v output for it at the bottom of this mail. Here's what
/var/log/messages says:

  May  8 10:19:53 lazarus kernel: usb 1-2.2: new low speed USB device using address 4
  May  8 10:19:53 lazarus kernel: input: USB HID v1.10 Keyboard [Twinhan Tech Remote 
Control] on usb-:02:00.0-2.2
  May  8 10:19:53 lazarus kernel: input: USB HID v1.10 Mouse [Twinhan Tech Remote 
Control] on usb-:02:00.0-2.2

Hoping someone groks IrDA and stuff like this - I've never really played
with it much. :-)

Thanks,

- Jeff

Bus 001 Device 006: ID 6253:0100  
Device Descriptor:
  bLength18
  bDescriptorType 1
  bcdUSB   1.10
  bDeviceClass0 (Defined at Interface level)
  bDeviceSubClass 0 
  bDeviceProtocol 0 
  bMaxPacketSize0 8
  idVendor   0x6253 
  idProduct  0x0100 
  bcdDevice1.00
  iManufacturer   1 
  iProduct2 
  iSerial 3 
  bNumConfigurations  1
  Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength   59
bNumInterfaces  2
bConfigurationValue 1
iConfiguration  4 
bmAttributes 0xa0
  Remote Wakeup
MaxPower  100mA
Interface Descriptor:
  bLength 9
  bDescriptorType 4
  bInterfaceNumber0
  bAlternateSetting   0
  bNumEndpoints   1
  bInterfaceClass 3 Human Interface Devices
  bInterfaceSubClass  1 Boot Interface Subclass
  bInterfaceProtocol  1 Keyboard
  iInterface  0 
  Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81  EP 1 IN
bmAttributes3
  Transfer TypeInterrupt
  Synch Type   None
  Usage Type   Data
wMaxPacketSize 0x0008  bytes 8 once
bInterval  10
HID Device Descriptor:
  bLength 9
  bDescriptorType33
  bcdHID   1.10
  bCountryCode0 Not supported
  bNumDescriptors 1
  bDescriptorType34 Report
  wDescriptorLength  63
Interface Descriptor:
  bLength 9
  bDescriptorType 4
  bInterfaceNumber1
  bAlternateSetting   0
  bNumEndpoints   1
  bInterfaceClass 3 Human Interface Devices
  bInterfaceSubClass  1 Boot Interface Subclass
  bInterfaceProtocol  2 Mouse
  iInterface  0 
  Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82  EP 2 IN
bmAttributes3
  Transfer TypeInterrupt
  Synch Type   None
  Usage Type   Data
wMaxPacketSize 0x0004  bytes 4 three times
bInterval  10
HID Device Descriptor:
  bLength 9
  bDescriptorType33
  bcdHID   1.10
  bCountryCode0 Not supported
  bNumDescriptors 1
  bDescriptorType34 Report
  wDescriptorLength  52

-- 
GVADEC 2004: Kristiansand, Norwayhttp://2004.guadec.org/
 
 Ah, now we see the violence inherent in the system. - From Monty
  Python to ESR, by way of Al Viro
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