Please copy the mailing list. Private messages help only you while mailing list discussions can help everyone looking for answers.
Pipes are implemented in javax.usb by the UsbPipe interface, which are part of each device's topology. On Mon, Oct 5, 2009 at 4:59 AM, Ruperto Durano <rupertsoft...@yahoo.com> wrote: > Hello Dan, > > Can I ask how is the Interrupt Out Pipe being implemented in JAVAX? > How can we use it if there is? > > As what I have read from HID document: > > The Interrupt pipe are used for: > Receiving asynchronous (unrequested) data from the device. > Transmitting low latency data to the device. > The Interrupt Out pipe is optional. If a device declares an Interrupt Out > endpoint > then Output reports are transmitted by the host to the device through the > Interrupt > Out endpoint. If no Interrupt Out endpoint is declared then Output reports > are > transmitted to a device through the Control endpoint, using > Set_Report(Output) > requests. > > Can please help me understand this more on how could this be implemented in > JAVAX? > My device does declare an Interrupt Out endpoint when it is in another > state(FLASH mode). And could not send any data to it when it is in that > mode. > > > thanks, > Ruperts > > ________________________________ > From: Dan Streetman <ddstr...@ieee.org> > To: Ruperto Durano <rupertsoft...@yahoo.com> > Cc: javax.usb development <javax-usb-devel@lists.sourceforge.net> > Sent: Wednesday, September 16, 2009 12:26:39 AM > Subject: Re: Help on JAVAX > > Considering you are sending a CLASS request but have not mentioned what your > device is nor what its class is nor what the protocol may be, why would you > expect me to be able to help? > > If I had to take a completely wild guess, obviously without knowing anything > about your device, its class or protocol, or what the specific response you > are looking for or getting back is, I would *assume* you have a HID device > and you don't realize that HID reports have the report ID number as the > first byte, with the actual report data following. But again that is > *completely* a guess made with *no* actual information about your situation. > > On Tue, Sep 15, 2009 at 2:14 AM, Ruperto Durano <rupertsoft...@yahoo.com> > wrote: >> >> Hello Dan, >> >> This is with regards to Java USB API --- javax. >> >> I had a hard time figuring out why there is an extra data acquired during >> the usbPipe.syncSubmit(byte[]). The first byte of the array shouldn't be >> there. Do you have any idea what happened? >> >> I opened a the pipe then send a command through >> device.asyncSubmit(usbControlIrp); >> with these settings for the usbControlIrp: >> byte bmRequestType = UsbConst.REQUESTTYPE_TYPE_CLASS | >> UsbConst.REQUESTTYPE_RECIPIENT_INTERFACE; >> byte bRequest = 0x09; >> short wValue = 2 << 8; >> short wIndex = >> UsbUtil.unsignedShort(usbInterface.getUsbInterfaceDescriptor().bInterfaceNumber()); >> >> Then get the reply from the device through usbPipe.syncSubmit(byte[]). >> >> I am not getting the exact data since the first byte is unexpected the >> rest are ok except that the last, expected, byte of the array is missing due >> to the occurrence of the unexpected first byte. >> >> I can tell that it is unexpected because I know what the device should >> have replied. >> >> Please help. I know I'm missing something like sending a controlled IRP >> instead during getting of the reply, if so, settings for the controlled IRP >> is another problem for me. Or could it be the settings of the usbControlIrp >> during the sending of the command? >> >> Please Help. >> >> Thanks, >> Ruperts >> > > > ------------------------------------------------------------------------------ Come build with us! The BlackBerry(R) Developer Conference in SF, CA is the only developer event you need to attend this year. Jumpstart your developing skills, take BlackBerry mobile applications to market and stay ahead of the curve. Join us from November 9 - 12, 2009. Register now! http://p.sf.net/sfu/devconference _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
