If you still think the device isn't getting your data, I recommend first tracing the data with Linux's built-in USB data monitor. If that shows the data being transferred, I think your next step is probably getting a USB bus trace machine to really verify that it's being sent. Although, I will say that I think it's very unlikely that Linux is dropping the data silently. If your data did not get to the device, javax.usb should give you a error code.
I think it's much more likely that you may be either getting the device's protocol wrong or simply leaving out command(s). Maybe you should get a Windows (software) trace of *everything* going to/from your device (not just your one specific command) and compare that to a Linux monitor (software) trace of what you are sending to/getting from your device. That is a lot cheaper than getting a hardware bus tracer. If you do want to get a hardware bus tracer, I have used most of the CATC (now owned by LeCroy) bus tracers. They are all fine tracers, with relatively good analysis software. However they are *expensive*. http://www.lecroy.com/tm/products/ProtocolAnalyzers/usb.asp?menuid=67 I've also used the USB 2.0 model of Ellisys bus tracer. It's a fine tracer that will get the job done, but the analysis software is not at all as good as the LeCroy software. But, it's a lot less expensive than the LeCroy tracers. http://ellisys.com/products/usbex200/index.php If you're looking for a bus tracer that isn't multi-thousands of dollars, I have seen one or two around that are "only" in the hundreds of dollars, but at the time I think it was only USB 1.1 bus speeds, and I don't know if they are still available. I don't remember their names either, but if you googled for usb bus tracer you could probably find all the options out there. Make sure you get a USB 2.0 model if you need high-speed tracing. On 9/13/07, Emanuele Maiarelli <[EMAIL PROTECTED]> wrote: > i've tried all solutions, but things dosen't change. > This is the the pice C of code on usb device handling EP1 (Cypres FX2LP): > > ... > if(!(EP1OUTCS & bmBIT1)) > { > char cmdbuff[10]; > int cmdsize=0; > int i; > int bitcount= EP1OUTBC; > BOOL stc=FALSE; > BOOL done=FALSE; > int c=0; > while ((c<bitcount) && cmdsize<10 && (!(done))) > { > if ((stc) && (EP1OUTBUF[c]!=0x03)) > cmdbuff[cmdsize++]=EP1OUTBUF[c]; > if (EP1OUTBUF[c]==0x02) stc=TRUE; > if (EP1OUTBUF[c]==0x03) done=TRUE; > c++; > } > if (cmdsize>0) > { > if ((cmdbuff[0]=='S') && (cmdbuff[1]=='N')) > { > EP1INBUF[0]=0x02; > for (i=0;i<9;i++) > { > EP1INBUF[1+i]=_SNO[i]; > } > EP1INBUF[10]=0x03; > EP1INBC=11; > SYNCDELAY; > } else > { > EP1INBUF[0]=0x02; > EP1INBUF[1]=cmdbuff[0]; > EP1INBUF[2]=cmdbuff[1]; > EP1INBUF[3]=0x03; > EP1INBC=4; > SYNCDELAY; > } > } > > EP1OUTBC = 0x40; > SYNCDELAY; > } > .... > > the device can handle garbage code, looking for a specific STX/ETX > encapsulated text. > > I fear that nothing is being sent to device, dued by the fact that im > using FC7+SELinux(Disabled), anyone have never tried javax.usb on FC7 ? > > Btw can you tell me what is the USB monitor you are using? > > At the moment i'm using the device with a C#/Windows solution, but i > really wants to switch to a Java/Linux one. > > Thanks in advice, > > Emanuele Maiarelli. > > > I don't know specifically why you never get data from your device, it > > probably is actually not sending anything. If you think it is, you > > should enable the Linux usb monitor to see if anything is coming in > > from your device. > > > > As far as your code, it looks basically ok, except for this part: > > byte outdata[]=new byte[outmaxPs]; > > outdata[0]=2; > > outdata[1]='S'; > > outdata[2]='N'; > > outdata[3]=3; > > wrp.setLength(4); > > wrp.setData(outdata); > > > > that is not doing what you want it to do. You set the data length to > > 4 but the call to setData resets it to outmaxPs. Read the API javadoc > > interface specification for UsbIrp.setData(): > > http://javax-usb.org/jdoc/javax/usb/UsbIrp.html#setData(byte[]) > > > > > > You instead should do either this: > > byte outdata[]=new byte[4]; > > outdata[0]=2; > > outdata[1]='S'; > > outdata[2]='N'; > > outdata[3]=3; > > wrp.setData(outdata); > > > > or this: > > byte outdata[]=new byte[outmaxPs]; > > outdata[0]=2; > > outdata[1]='S'; > > outdata[2]='N'; > > outdata[3]=3; > > wrp.setData(outdata, 0, 4); > > > > or, this: > > byte outdata[]=new byte[outmaxPs]; > > outdata[0]=2; > > outdata[1]='S'; > > outdata[2]='N'; > > outdata[3]=3; > > wrp.setData(outdata); > > wrp.setLength(4); > > > > It's possible that is causing your problem, since your device is > > getting extra garbage bytes sent to it which may confuse it. > > > > > > On 8/27/07, Emanuele Maiarelli <[EMAIL PROTECTED]> wrote: > >> im running the code below, what happen is that out packet seems to work( > >> it returns from wp.asyncSubmit(wrp); wrp.waitUntilComplete(); // i've > >> tried > >> wp.asyncSubmit(wrp) before) but unless wp.abortAllSubmissions(); i > >> got > >> exception trying wp.close();). > >> The real problem is that i cannot recive data from the IN endpoint and > >> rrp.waitUntilComplete(); waits forever. > >> > >> I've tested the USB protocol and the data sent in ep1 (OUT) are correct, > >> in anycase i'll get a answer for errors. > >> > >> Thanks in advice, > >> > >> import java.util.Hashtable; > >> import java.util.Iterator; > >> import java.util.List; > >> import javax.usb.UsbDevice; > >> import javax.usb.UsbEndpoint; > >> import javax.usb.UsbHub; > >> import javax.usb.UsbInterface; > >> import javax.usb.UsbIrp; > >> import javax.usb.UsbPipe; > >> import javax.usb.util.UsbUtil; > >> > >> > >> /** > >> * > >> * @author root > >> */ > >> public class DevScan extends javax.swing.JInternalFrame implements > >> FmkChild > >> { > >> static final int cmdEPw=0x01; > >> static final int cmdEPr=0x81; > >> > >> FmkFather Father; > >> /** Creates new form DevScan */ > >> public DevScan() { > >> initComponents(); > >> } > >> > >> public static String getID(UsbDevice d) throws Exception > >> { > >> String SID=null; > >> UsbEndpoint wep=null; > >> > >> UsbEndpoint rep=null; > >> List intf=d.getActiveUsbConfiguration().getUsbInterfaces(); > >> for (int i=0;i<intf.size();i++) > >> { > >> UsbInterface interf=(UsbInterface) intf.get(i); > >> List eps=interf.getUsbEndpoints(); > >> for (int j=0;j<eps.size();j++) > >> { > >> UsbEndpoint ep = (UsbEndpoint) eps.get(j); > >> int > >> epid=((int)(ep.getUsbEndpointDescriptor().bEndpointAddress() > >> & 0xFF)); > >> if (epid == DevScan.cmdEPw) > >> { > >> wep=ep; > >> } > >> if (epid == DevScan.cmdEPr) > >> { > >> rep=ep; > >> } > >> > >> } > >> } > >> if ((wep!=null) && (rep!=null)) > >> { > >> int outmaxPs = > >> wep.getUsbEndpointDescriptor().wMaxPacketSize(); > >> int inmaxPs= > >> rep.getUsbEndpointDescriptor().wMaxPacketSize(); > >> wep.getUsbInterface().claim(); > >> > >> //rep.getUsbInterface().claim(); > >> > >> System.out.println(wep.getUsbEndpointDescriptor().bEndpointAddress()); > >> > >> System.out.println(rep.getUsbEndpointDescriptor().bEndpointAddress()); > >> > >> UsbPipe wp=wep.getUsbPipe(); > >> UsbIrp wrp=wp.createUsbIrp(); > >> > >> UsbPipe rp=rep.getUsbPipe(); > >> > >> > >> byte indata[]=new byte[inmaxPs]; > >> > >> rp.open(); > >> UsbIrp rrp=rp.createUsbIrp(); > >> rrp.setData(indata); > >> rrp.setUsbException(null); > >> > >> rp.asyncSubmit(rrp); > >> > >> > >> wp.open(); > >> > >> byte outdata[]=new byte[outmaxPs]; > >> outdata[0]=2; > >> outdata[1]='S'; > >> outdata[2]='N'; > >> outdata[3]=3; > >> wrp.setLength(4); > >> wrp.setData(outdata); > >> wrp.setUsbException(null); > >> > >> wp.asyncSubmit(wrp); > >> > >> wrp.waitUntilComplete(); > >> wrp.setComplete(false); > >> wp.abortAllSubmissions(); > >> wp.close(); > >> System.out.println("invio"); > >> > >> rrp.waitUntilComplete(); > >> rp.abortAllSubmissions(); > >> rp.close(); > >> wep.getUsbInterface().release(); > >> rep.getUsbInterface().release(); > >> char[] ss=new char[rrp.getLength()]; > >> for (int i=0;i<ss.length;i++) > >> { > >> System.out.println(UsbUtil.toHexString(indata[i])); > >> > >> } > >> } > >> return SID; > >> } > >> > >> public static void FillUsbTable(Hashtable t,UsbHub hub) throws > >> Exception > >> { > >> > >> List usbdevs=hub.getAttachedUsbDevices(); > >> Iterator it=usbdevs.iterator(); > >> t.clear(); > >> while (it.hasNext()) > >> { > >> UsbDevice d=(UsbDevice) it.next(); > >> if (d.isUsbHub()) > >> { > >> DevScan.FillUsbTable(t,(UsbHub)d); > >> } else > >> { > >> if(d.getProductString().equals("MY-USB")) > >> { > >> DevScan.getID(d); > >> } > >> } > >> } > >> } > >> > >> > >> -- > >> Emanuele Maiarelli > >> > >> > >> > >> > >> > >> > >> ------------------------------------------------------------------------- > >> This SF.net email is sponsored by: Splunk Inc. > >> Still grepping through log files to find problems? Stop. > >> Now Search log events and configuration files using AJAX and a browser. > >> Download your FREE copy of Splunk now >> http://get.splunk.com/ > >> _______________________________________________ > >> javax-usb-devel mailing list > >> javax-usb-devel@lists.sourceforge.net > >> https://lists.sourceforge.net/lists/listinfo/javax-usb-devel > >> > > > > > -- > Emanuele Maiarelli > > > > > ------------------------------------------------------------------------- > This SF.net email is sponsored by: Microsoft > Defy all challenges. Microsoft(R) Visual Studio 2005. > http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ > _______________________________________________ > 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: Microsoft Defy all challenges. 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