X10 Wireless Technology Inc USB Receiver

[Lars Eggert]

Hi,

I'm trying to get the USB RF remote control that comes with some ATI 
Wonder cards to do something meaningful under -current.

It shows up as an "X10 Wireless Technology Inc USB Receiver" with three 
devices: /dev/ugen0, and the corresponding input (/dev/ugen0.1) and 
output endpoints (/dev/ugen/0.2). Also see the attached usbctl output.

Simply reading from the input endpoint /dev/ugen0.1 doesn't work.

This page (http://remotew.free.fr/linux_en.htm) points at the Gatos
project, which has a Linux driver (ati_remote) that seems to make the
remote show up as a USB keyboard:
http://sourceforge.net/project/showfiles.php?group_id=12629

That driver sends a couple of magic bytes to the device during 
initialization. I'm trying to do the same from userland:

static char init1[]= { 0x80, 0x01, 0x00, 0x20, 0x14 };
static char init2[]= { 0x80, 0x01, 0x00, 0x20, 0x14, 0x20, 0x20, 0x20 };

int main(int argc, char *argv[]) {
   int out = open("/dev/ugen0.2", O_WRONLY);
   if (out == -1) {
     perror("ugen0.2");
     goto done;
   }

   if (write(out, init1, sizeof init1) == -1) {
     perror("write init1");
     goto done;
   }

   if (write(out, init2, sizeof init2) == -1) {
     perror("write init1");
     goto done;
   }

  done:
   close(out);
}

Really simply. Here's what happens when I run it:

	write init1: Input/output error

it feels like I'm missing something extremely obvious, but I'm new to 
the USB internals. The two endpoints are "interrupt" endpoints. I'm not 
sure what that signifies, but I heard writing to them on -stable is 
broken, but on -current it should work.

Any ideas?

Thanks,
Lars
-- 
Lars Eggert <larse at isi.edu>           USC Information Sciences Institute
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DEVICE addr 2
DEVICE descriptor:
bLength=18 bDescriptorType=device(1) bcdUSB=1.10 bDeviceClass=0 bDeviceSubClass=0
bDeviceProtocol=0 bMaxPacketSize=8 idVendor=0x0bc7 idProduct=0x0004 bcdDevice=100
iManufacturer=1(X10 Wireless Technology Inc) iProduct=2(USB Receiver) iSerialNumber=0() bNumConfigurations=1

CONFIGURATION descriptor 0:
bLength=9 bDescriptorType=config(2) wTotalLength=32 bNumInterface=1
bConfigurationValue=1 iConfiguration=0() bmAttributes=80 bMaxPower=2 mA

INTERFACE descriptor 0:
bLength=9 bDescriptorType=interface(4) bInterfaceNumber=0 bAlternateSetting=0
bNumEndpoints=2 bInterfaceClass=255 bInterfaceSubClass=0
bInterfaceProtocol=0 iInterface=0()

ENDPOINT descriptor:
bLength=7 bDescriptorType=endpoint(5) bEndpointAddress=1-in
bmAttributes=interrupt wMaxPacketSize=8 bInterval=10

ENDPOINT descriptor:
bLength=7 bDescriptorType=endpoint(5) bEndpointAddress=2-out
bmAttributes=interrupt wMaxPacketSize=8 bInterval=10

current configuration 1

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