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 >> >> > challenge >> >> > Build the coolest Linux based applications with Moblin SDK & win >> >> > great >> >> > prizes >> >> > Grand prize is a trip for two to an Open Source event anywhere in the >> >> > world >> >> > http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> >> > _______________________________________________ >> >> > 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 >> > prizes >> > Grand prize is a trip for two to an Open Source event anywhere in the >> > world >> > http://moblin-contest.org/redirect.php?banner_id=100&url=/ >> > _______________________________________________ >> > 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 > prizes > Grand prize is a trip for two to an Open Source event anywhere in the world > http://moblin-contest.org/redirect.php?banner_id=100&url=/ > _______________________________________________ > javax-usb-devel mailing list > javax-usb-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/javax-usb-devel > > ------------------------------------------------------------------------- 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 prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
