I've been trying to program x10 usb home automation interface and I always have this problem - the first device response is always missing after my program starts up. I see the same behavior with 3 different devices from 2 different manufacturers. There's no special processing I do for the first response - they all follow the same code path. As you can see from the enclosed log, I send out the same command (0x8b) but the first response is missing. I can see only the second 8 byte response. However the second request produces a correct response. Everything else from that point on work fine. It might be something I do incorrectly, of course, but I don't think so. Is there any other way to troubleshoot it? Here's the trace:
Device found [default](2) JavaxUsb.h.open_device[216] Opening node /proc/bus/usb/001/043 [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[145] Submitting ClaimInterface Request. [default](3) JavaxUsbInterfaceRequest.c.claim_interface[87] Claiming interface 0 [default](3) JavaxUsbInterfaceRequest.c.claim_interface[96] Claimed interface 0 [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request Listening [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request. [xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB [default](2) JavaxUsbKernel.c.setKernelVersion[45] Kernel version string 2.4.30 parsed as 2.4.30 [xfer](2) JavaxUsbPipeRequest.c.pipe_request[75] Submitted URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request Out: 8b 0 0 0 0 0 0 0 [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request. [xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB [xfer](2) JavaxUsbPipeRequest.c.pipe_request[75] Submitted URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[91] Got completed URB [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[113] Completing URB. [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[126] Completed URB. Sent [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[95] Finished completed URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[91] Got completed URB [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[113] Completing URB. [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[126] Completed URB. [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[95] Finished completed URB In: 0 0 0 0 0 0 0 0 Done Listening [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request. [xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB [xfer](2) JavaxUsbPipeRequest.c.pipe_request[75] Submitted URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request Out: 8b 0 0 0 0 0 0 0 [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request. [xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB [xfer](2) JavaxUsbPipeRequest.c.pipe_request[75] Submitted URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[91] Got completed URB [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[113] Completing URB. [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[126] Completed URB. Sent [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[95] Finished completed URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[91] Got completed URB [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[113] Completing URB. [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[126] Completed URB. [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[95] Finished completed URB In: 0 0 35 0 0 1 1 2 Done Listening [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[75] Got Request [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[127] Submitting Request. [xfer](5) JavaxUsbDeviceProxy.c.submitRequest[131] Submitting Pipe Request. [xfer](2) JavaxUsbPipeRequest.c.pipe_request[62] Submitting URB [xfer](2) JavaxUsbPipeRequest.c.pipe_request[75] Submitted URB [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[78] Completed Request [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[91] Got completed URB [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[113] Completing URB. [xfer](2) JavaxUsbPipeRequest.c.complete_pipe_request[126] Completed URB. [xfer](2) JavaxUsbDeviceProxy.c.Java_com_ibm_jusb_os_linux_JavaxUsb_nativeDeviceProxy[95] Finished completed URB In: 0 0 0 0 0 0 0 0 Done ------------------------------------------------------- SF.Net email is sponsored by: Tell us your software development plans! Take this survey and enter to win a one-year sub to SourceForge.net Plus IDC's 2005 look-ahead and a copy of this survey Click here to start! http://www.idcswdc.com/cgi-bin/survey?id=105hix _______________________________________________ javax-usb-devel mailing list javax-usb-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/javax-usb-devel
