Dan,
I am getting the following stack trace for the platform exception:
DCP Submission failed: Error submitting IRP: Submission aborted
javax.usb.UsbPlatformException: Error submitting IRP: Submission aborted
at
com.ibm.jusb.os.linux.JavaxUsbUsb.errorToUsbException(JavaUsb.java:73)
at
com.ibm.jusb.os.linux.LinuxPipeRequest.completeUsbIrp(LinuxPipeRequest.java:84)
at
com.ibm.jusb.os.linux.LinuxPipeRequest.setCompleted(LinuxPipeRequest.java:74)
at com.ibm.jusb.os.linux.JavaxUsb.nativeDeviceProxy(Native
Method)
at
com.ibm.jusb.os.linux.LinuxDeviceProxy$1.run(LinuxDeviceProxy.java:91)
at java.lang.Thread.run(Thread.java:595)
I see that the root cause is because of the Thread. Is there anyhow i can
keep requesting the device until i get the required code from it?
Thank you in advance.
Regards
Rahul
On 8/12/08, Dan Streetman <[EMAIL PROTECTED]> wrote:
>
> The "platform" exception indicates that the OS returned some error
> that isn't recognizable by the javax.usb OS implementation. There
> should be a number and/or message associated with the platform
> exception, if you get that it will help figure out what error linux is
> sending.
>
> On Tue, Aug 12, 2008 at 12:28 PM, Bourothu Rahul
> <[EMAIL PROTECTED]> wrote:
> >
> > Dan,
> >
> > When i keep sending the HID request to the DCP using syncSubmit, after
> few
> > times, i.e like 50-70 times after submitting, i get the following and i
> am
> > getting kicked out of the loop!
> >
> > DCP Submission failed: Error Submitting IRP: Submission aborted
> > javax.usb.UsbPlatformException: Error submitting IRP: Submission aborted
> >
> > What can i do to resolve this?
> >
> > - Hide quoted text -
> >
> > Regards
> > Rahul Bourothu
> > On 8/12/08, Dan Streetman <[EMAIL PROTECTED]> wrote:
> >>
> >> On Tue, Aug 12, 2008 at 11:21 AM, Bourothu Rahul
> >> <[EMAIL PROTECTED]> wrote:
> >> > Dan,
> >> >
> >> > I have figured out the way yesterday. First, i issue my read command
> to
> >> > the
> >> > device on the DCP and then open the pipe. Then use a UsbIrp to read
> from
> >> > the
> >> > pipe. I am able to communicate with the device!!
> >> >
> >> > But, there is one problem. When i try to put this in a loop until i
> get
> >> > the
> >> > necessary information, that is if i try to asyncsubmit the UsbIrp to
> the
> >> > pipe, i get a message saying " cannot submit: isComplete is true" . Do
> i
> >> > need to create a new UsbIrp everytime i have to submit to the pipe?
> >>
> >> short answer: yes.
> >>
> >> long answer: you can "clear" the irp's fields if you really want to
> >> reuse it. But it's much faster and easier to just create a new one -
> >> java has very good GC these days.
> >>
> >> >
> >> > Thank you!
> >> > Regards
> >> > Rahul Bourothu
> >> >
> >> >
> >> > On 8/12/08, Dan Streetman <[EMAIL PROTECTED]> wrote:
> >> >>
> >> >> I can't help with figuring out the protocol for your device, but I
> >> >> would suggest that you read the javadoc for UsbControlIrp and UsbIrp
> >> >> so you will know how to use them for input and output. Specifically
> >> >> the input data will not get filled up if you leave it empty; but you
> >> >> really should read all the javadoc to understand it - it's really not
> >> >> that much.
> >> >>
> >> >> On Thu, Aug 7, 2008 at 2:38 PM, Bourothu Rahul
> >> >> <[EMAIL PROTECTED]>
> >> >> wrote:
> >> >> > Hi,
> >> >> >
> >> >> > I am using a USB RFID Reader to read the EPC code associated with a
> >> >> > RFID
> >> >> > tag
> >> >> > on a Linux platform(using JSR80). The device uses ByteStream
> Protocol
> >> >> > to
> >> >> > communicate with the host. This protocol requires use of HID Report
> >> >> > number
> >> >> > 1.
> >> >> > The read tag command as provided in the device specification is :
> >> >> > <01><00><06><22><A0><85><00>
> >> >> >
> >> >> > I believe I have to use SET_REPORT(to send control) and
> GET_REPORT(to
> >> >> > recieve data) to enable communication.
> >> >> >
> >> >> > In order to issue the read tag command, i am using the following
> >> >> > header
> >> >> > values(from the usb 1.1 HID specification):
> >> >> >
> >> >> > bmRequestType: 0x21
> >> >> > bRequest: 0x09 (SET_REPORT, to the device)
> >> >> > wValue: 0x0201 (<I/O Type><Report Number>)
> >> >> > wIndex: 0x0000 (Interface number)
> >> >> > wLength: 0x07 (Number of Bytes to send to the device)
> >> >> > Data: <01><00><06><22><A0><85><00>
> >> >> >
> >> >> > I wrap this data in a UsbControlIrp, and send it to the device
> using
> >> >> > syncSubmit method.
> >> >> >
> >> >> > Later i have to read the report from the device using GET_REPORT.
> For
> >> >> > this I
> >> >> > would use the headers as follows:
> >> >> > (The INPUT Report from the device would be of size 22 bytes)
> >> >> > bmRequestType: 0xA1
> >> >> > bRequest: 0x01 (GET_REPORT, from the device)
> >> >> > wValue: 0x0101 (<I/O Type><Report Number>)
> >> >> > wIndex: 0x0000 (Interface number)
> >> >> > wLength: 0x16 (Number of Bytes to be recieved from
> the
> >> >> > device,
> >> >> > 22 in HEX)
> >> >> > Data: <empty> < I assume the data read from the
> >> >> > device
> >> >> > will be stored here>
> >> >> >
> >> >> > I again wrap this data in a UsbControlIrp and send it to the device
> >> >> > using
> >> >> > syncSubmit method.
> >> >> > Is my approach correct or am I going wrong somewhere?
> >> >> >
> >> >> > Please let me know!
> >> >> >
> >> >> > Thank You
> >> >> > Regards
> >> >> > Rahul Bourothu
> >> >> >
> >> >> >
> >> >> >
> -------------------------------------------------------------------------
> >> >> > This SF.Net email is sponsored by the Moblin Your Move Developer's
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> >> >> > world
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> >> >> > _______________________________________________
> >> >> > javax-usb-devel mailing list
> >> >> > javax-usb-devel@lists.sourceforge.net
> >> >> > https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
> >> >> >
> >> >> >
> >> >
> >> >
> >> >
> >> > --
> >> > Rahul Bourothu
> >> > School of Engineering and Applied Science,
> >> > University of Pennsylvania,
> >> > Philadelphia, PA - 19104
> >> >
> >> >
> -------------------------------------------------------------------------
> >> > This SF.Net email is sponsored by the Moblin Your Move Developer's
> >> > challenge
> >> > Build the coolest Linux based applications with Moblin SDK & win great
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> >> > world
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> >> > _______________________________________________
> >> > javax-usb-devel mailing list
> >> > javax-usb-devel@lists.sourceforge.net
> >> > https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
> >> >
> >> >
> >
> >
> >
> > --
> > Rahul Bourothu
> > School of Engineering and Applied Science,
> > University of Pennsylvania,
> > Philadelphia, PA - 19104
> > -------------------------------------------------------------------------
> > This SF.Net email is sponsored by the Moblin Your Move Developer's
> challenge
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> > prizes
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> world
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> > _______________________________________________
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> >
> >
>
--
Rahul Bourothu
School of Engineering and Applied Science,
University of Pennsylvania,
Philadelphia, PA - 19104
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