http://blog.gmane.org/gmane.comp.lib.libusb.devel.windows hourly 1 1901-01-01T00:00+00:00 http://gmane.org/img/gmane-25t.png http://gmane.org http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5455 <pre>I realize that this has been posted about before, but I can't seem to find the answer to my problem. I have some simple enumeration code that looks for the usb busses and devices. However usb_find_devices() always returns zero. Since there aren't any devices I can't connect to anything later. I have run testlibusb-win.exe as some of the other posts have suggested and get the following output: /DLL version:1.2.6.0 Driver version:-1.-1.-1.-1 bus/device idVendor/idProduct/ Honestly I'm not sure what it means. Most of the code I'm using was provided by Microchip in one of their examples. Thanks in advance! ~Warren ///////////////////////////////////// Code //////////////////////////////////////////// if ( Connection_Status != CONNECTED) // if not connected already { int count; usb_init(); /* initialize the library */ usb_find_busses(); /* find all busses */ count = usb_find_devices(); /* find all connected devices */ //Now look through the list that we just populated. We are trying to see if any of them match our device. struct usb_bus *bus; struct usb_device *dev; for(bus = usb_get_busses(); bus; bus = bus-&gt;next) { for(dev = bus-&gt;devices; dev; dev = dev-&gt;next) { if(dev-&gt;descriptor.idVendor == MY_VID &amp;&amp; dev-&gt;descriptor.idProduct == MY_PID) { MyLibusbDeviceHandle = usb_open(dev); //Opens a USB device break; } } } if(!MyLibusbDeviceHandle) { // Always ends up here because their are no devices to connect to. this-&gt;Connect_btn-&gt;Text = L"Failed"; return; } if(usb_set_configuration(MyLibusbDeviceHandle, 1) &lt; 0) // Sets the Active configuration of the device { usb_close(MyLibusbDeviceHandle); this-&gt;Connect_btn-&gt;Text = L"Failed"; return; } if(usb_claim_interface(MyLibusbDeviceHandle, 0) &lt; 0) //claims the interface with the Operating System { //Closes a device opened since the claim interface is failed. usb_close(MyLibusbDeviceHandle); this-&gt;Connect_btn-&gt;Text = L"Failed"; return ; } ToggleLED_btn-&gt;Enabled = true;//Make button no longer greyed out GetPushbuttonState_btn-&gt;Enabled = true;//Make button no longer greyed out StateLabel-&gt;Enabled = true; //Make label no longer greyed out Connection_Status = CONNECTED; //Now status is connected } ///////////////////////////////////// End of Code //////////////////////////////////////////// -- View this message in context: http://libusb.6.n5.nabble.com/usb-find-devices-is-zero-tp5711961.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Learn Graph Databases - Download FREE O'Reilly Book "Graph Databases" is the definitive new guide to graph databases and their applications. This 200-page book is written by three acclaimed leaders in the field. The early access version is available now. Download your free book today! http://p.sf.net/sfu/neotech_d2d_may </pre> Warren Terrall 2013-05-10T15:42:37 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5431 <pre>Folks, I'm so sorry to bother you with something that is probably well known, but all I can find on the web about this are problems, not solutions. I have been running a 32-bit XP machine for ages, using libusb-win32-bin-1.2.6.0 and everything has been fine. I have now moved to a Windows 7 machine, still 32-bit, and all is not fine. I am using libusb to get data from a PIC18 microcontroller. I fired up the microcontroller for the first time and the PC shot off to find drivers. I tried to stop it, and I may have succeeded, but it's hard. I have de-installed the driver it chose (which might have been right) and tried to install the one I have just downloaded from SoundForge, but I'm not certain. I think I have the latest drivers installed, fighting Win 7 all the way. I have told Win 7 not to find drivers itself, but it's ignoring me. Anyway, it all looks OK until I run my "C" program to get data. The start of the program is appended. All is well till "usb_set_configuration", when I get an error of -5, and I have no idea why. I've been using this sort of code for literally years. Can anyone please tell me what's going on and how to fix it?! Martin *************** #include &lt;usb.h&gt; #include &lt;stdio.h&gt; #include &lt;time.h&gt; Blah, blah, then usb_dev_handle *dev = NULL; /* the device handle */ usb_init(); /* initialize the library */ usb_find_busses(); /* find all busses */ usb_find_devices(); /* find all connected devices */ if(!(dev = open_dev())) { printf("error: device not found!\n"); return 0; } i = usb_set_configuration(dev, 1); if(i &lt; 0) { printf("error %d: setting config 1 failed\n", i); usb_close(dev); return 0; } and so on ... When I run this I get: "error -5: setting config 1 failed" and it quits. </pre> Martin Reekie 2013-05-06T15:25:17 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5426 <pre>------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with &lt;2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Hans Müller 2013-05-04T07:51:04 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5423 <pre>I apologies if this is being posted to the wrong mailing list. The support forum for LibUsbDotNet indicated that this was now the place to ask these questions: My apologies for the newbie question. I've spent many frustrating hours trying to retrieve a USB device's serial number (which I believe is stored as a string descriptor in the device - see SerialStringIndex property below). Initially I tried to retrieve this information via the MonoUsbDevice.MonoUsbDeviceList method. Although I can find my particular device in this list, the Info (UsbDeviceInfo class) property returns empty strings for all three of the ManufacturerString, ProductString and SerialString properties: (UsbDeviceInfo - Info property via MonuUsbDevice) {Length:18 DescriptorType:Device BcdUsb:0x0110 Class:PerInterface SubClass:0x00 Protocol:0x00 MaxPacketSize0:64 VendorID:0x067B ProductID:0xAAA5 BcdDevice:0x0300 ManufacturerStringIndex:1 ProductStringIndex:2 SerialStringIndex:3 ConfigurationCount:1 ManufacturerString: ProductString: SerialString: } I was eventually able to get what I wanted using the UsbDevice.AllDevices.FindAll method to retrieve a UsbRegDeviceList from which I found my particular WinUsbDevice with the following Info property. Note that the SerialString and other string properties are now populated. (UsbDeviceInfo - Info property via WinUsbDevice) {Length:18 DescriptorType:Device BcdUsb:0x0110 Class:PerInterface SubClass:0x00 Protocol:0x00 MaxPacketSize0:64 VendorID:0x067B ProductID:0xAAA5 BcdDevice:0x0300 ManufacturerStringIndex:1 ProductStringIndex:2 SerialStringIndex:3 ConfigurationCount:1 ManufacturerString:Prolific Technology Inc. ProductString:ALRT USB-SERIAL ADAPTOR SerialString:09500006 } I neglected to mention earlier that the goal of all of this was to run this code on Mac. With that in mind, I took the working Windows code and ran it on Mac. Unfortunately, it doesn't work as expected. Instead of WinUSBDevice instances (ie: the Device property of the UsbRegistry class) I get MonoUsbDevice instances (when calling the UsbDevice.AllDevices.FindAll method). Just as I discovered earlier, the MonoUsbDevice instances returned on the Mac also do not have the SerailString property populated. 1) Why does the MonoUsbDevice instance lack this information? Is this is bug or by design? Note that I poked around in memory near one of the handles associated with my MonoUsbDevice and am clearly able to see the SN in memory. What I can't figure out is how the memory location is even associated to the MonoUsbDevice (if at all). The fact that it's in memory , however, clearly suggests that the information is being loaded and should be accessible) 2) Is there something entirely unrelated, to the above that, I've overlooked. Note that getting the SN on Mac is really what I need. ------------------------------------------------------------------------------ Get 100% visibility into Java/.NET code with AppDynamics Lite It's a free troubleshooting tool designed for production Get down to code-level detail for bottlenecks, with &lt;2% overhead. Download for free and get started troubleshooting in minutes. http://p.sf.net/sfu/appdyn_d2d_ap2_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> David Schober 2013-05-03T04:07:21 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5415 <pre>hello I've downloaded the libusbdotnot 2.8.2 source code and tried to run the show.Info example from Visual studio 2012 on my Windows 7 machine. But nothing prints out, I don't know why. Could someone help me? </pre> Fang Liu 2013-04-23T18:24:25 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5411 <pre>Hello, I found a bad behaviour of the UsbK_SetCurrentAlternateSetting function, while selecting a setting containing an EP with isochronous transfer. As known, one can see the reserved USB bandwidth in the device manager, selecting the corresponding USB root-hub and than selecting the tab "Advanced". After calling UsbK_SetCurrentAlternateSetting the reserved bandwidth is shown correct. However, after terminating the process the display of the reserved bandwidth persists, until the device is unplugged. Only a call of UsbK_SetCurrentAlternateSetting and a selection of a "Null" bandwidth setting can remove the device from the list of displayed bandwidth. To verify that the displayed bandwidth is actual the reserved bandwidth, I attached several devices start the streaming and stop the streaming with and without a closing UsbK_SetCurrentAlternateSetting call with the "Null" setting. Result: The bandwidth reservation persists, and blocks the bus from using by other devices. Conclusion: It is highly recommended to call UsbK_SetCurrentAlternateSetting(usbhandle, 0) prior closing the usbhandle. I recommend also to include this statement into the documentation. I expect this behaviour also with the libusb library function libusb_set_interface_alt_setting. Best regards Ekkehard -- View this message in context: http://libusb.6.n5.nabble.com/UsbK-SetCurrentAlternateSetting-Isochronous-transfer-and-used-bandwidth-in-root-hub-tp5711791.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis &amp; visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter </pre> Ekkehard 2013-04-22T08:01:05 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5407 <pre>Hi all, I've got a problem with LibUsbDotNet (2.2.8.104) and simple USB thermometer TEMPerV1.2. Under WIN 7 the application runs OK, problem is in LINUX (Linux raspberrypi 3.6.11-0-raspberrypi, image from OpenSuse LINUX). 1) USB info runs OK 2) Detach Linux Kernel Driver also runs OK, after that "lsusb -t" shows "no driver" /: Bus 01.Port 1: Dev 1, Class=root_hub, Driver=dwc_otg/1p, 480M |__ Port 1: Dev 2, If 0, Class=Hub, Driver=hub/3p, 480M |__ Port 1: Dev 3, If 0, Class=Vendor Specific Class, Driver=smsc95xx, 480M |__ Port 3: Dev 5, If 0, Class=Human Interface Device, Driver=, 1.5M |__ Port 3: Dev 5, If 1, Class=Human Interface Device, Driver=, 1.5M 3) OpenUsbDevice, SetConfiguration and ClaimInterface(s) is OK (without detaching kernel driver fires the exception "resource busy" is returned). 4) ControlTransfer(s) also OK, returns correct number of transferred bytes. 5) But, any attempt to read (OpenEndpointReader.., Read...) from device ends with "-7:ErrorTimeout:Operation timed out" (I've tried timeout value from 100 to 10000 with no difference). This is under above metioned LINUX only, under WIN 7 everything runs OK. Thanks in advance for any help.. Milan Drasil ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis &amp; visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Milan Drášil 2013-04-21T10:28:47 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5404 <pre>Hello, I am operating on 4 identical pieces of hardware. Four independent Instances of my software are controlling this devices. The call is embedded in a thread, the thread is in a DLL. The BSOD occours calling the function UsbK_SetCurrentAlternateSetting of the forth device (e.g. devices 1 to 3 have sucessfully started there work) The identical code called prior to the failing code is if not UsbK_SetConfiguration(usbHandle,1) then Exit; if not UsbK_ClaimInterface(usbHandle,interfaceIndex,True) then Exit; interfaceClaimed := True; if not UsbK_SetCurrentAlternateSetting(usbHandle,AltInterface) ... //&lt;------ here BSOD in the 4th call The BSOD occours with Windows XP (32bit) and Windows 7 (64bit), and both with libusbK version 3.0.5.13 and 3.0.5.16 The minidump says: Problem signature: Problem Event Name:BlueScreen OS Version:6.1.7601.2.1.0.256.1 Locale ID:1033 Additional information about the problem: BCCode:10d BCP1:0000000000000005 BCP2:0000057FEE162A58 BCP3:0000000000001200 BCP4:FFFFFA8011E1A010 OS Version:6_1_7601 Service Pack:1_0 Product:256_1 Details of the calling stack are: Filename: libusbK.sys Address In Stack: libusbK.sys+304b To Address: fffff880`06f59000 Size: 0x00010000 Time Stamp: 0x4fad69b0 Time String: 5/11/2012 9:34:08 PM The output of the TestLibUsb is: DLL version:1.2.6.0 Driver version:3.0.5.16 bus/device idVendor/idProduct bus-0/\\.\libusb0-0255--0xXXXX-0xXXXX XXXX/XXXX - Manufacturer : XXXXXXXXXX - Product : XXXXX - Serial Number: XXXXXXXXX bLength: 18 bDescriptorType: 01h bcdUSB: 0200h bDeviceClass: 00h bDeviceSubClass: 00h bDeviceProtocol: 00h bMaxPacketSize0: 40h idVendor: XXXXh idProduct: XXXXh bcdDevice: 0100h iManufacturer: 1 iProduct: 2 iSerialNumber: 3 bNumConfigurations: 1 wTotalLength: 55 bNumInterfaces: 1 bConfigurationValue: 1 iConfiguration: 0 bmAttributes: 80h MaxPower: 250 bInterfaceNumber: 0 bAlternateSetting: 0 bNumEndpoints: 2 bInterfaceClass: 255 bInterfaceSubClass: 0 bInterfaceProtocol: 0 iInterface: 0 bEndpointAddress: 84h bmAttributes: 01h wMaxPacketSize: 0 bInterval: 1 bRefresh: 0 bSynchAddress: 0 bEndpointAddress: 85h bmAttributes: 01h wMaxPacketSize: 0 bInterval: 1 bRefresh: 0 bSynchAddress: 0 bInterfaceNumber: 0 bAlternateSetting: 1 bNumEndpoints: 2 bInterfaceClass: 255 bInterfaceSubClass: 0 bInterfaceProtocol: 0 iInterface: 0 bEndpointAddress: 84h bmAttributes: 01h wMaxPacketSize: 940 bInterval: 1 bRefresh: 0 bSynchAddress: 0 bEndpointAddress: 85h bmAttributes: 01h wMaxPacketSize: 940 bInterval: 1 bRefresh: 0 bSynchAddress: 0 Any ideas on this Item? Best regards Ekkehard -- View this message in context: http://libusb.6.n5.nabble.com/BSOD-on-UsbK-SetCurrentAlternateSetting-tp5711772.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis &amp; visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter </pre> Ekkehard 2013-04-19T16:30:14 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5392 <pre>I'm fairly new to driver and libusb development and am having a few issues with an upper level filter driver I am developing. Basically I installed the vendor driver and then the libusb filter driver on top. I can receive events just fine once I do the following: wholeUsbDevice.SetConfiguration(1); wholeUsbDevice.ClaimInterface(0); Once I set the configuration, I start receiving data from the libusb driver, but the vendor driver functionality stops working until I do a wholeUsbDevice.ResetDevice(), but that stops the libusb driver data from flowing. I'm trying to determine if I just don't understand filter drivers and this is by design or if I am doing something wrong. My goal is to augment the vendor's driver but still have their driver handle the bulk of the communications. Is that an achievable goal? Thank you! ------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis &amp; visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Ryan Buerger 2013-04-13T17:15:29 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5390 <pre>Hello I’m trying to get libusb-win32 working with a project using c++ builder XE3. I’ve included lusb0_usb.h and I’m linking to the bcc version of the libusb.lib. However, when I try to compile I am getting alot of errors in the windows sdk headers. Has anyone managed to compile using c++ builder, and if so what steps were required. Thanks -Michael------------------------------------------------------------------------------ Precog is a next-generation analytics platform capable of advanced analytics on semi-structured data. The platform includes APIs for building apps and a phenomenal toolset for data science. Developers can use our toolset for easy data analysis &amp; visualization. Get a free account! http://www2.precog.com/precogplatform/slashdotnewsletter_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Michael Gurnett 2013-04-11T11:31:01 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5381 <pre>Dear LibUSB-Win32 developers, I am using LibUSB version 1.2.6.0 on Windows7 for camera Canon A2300. But Message I can see in Device Manager is "Windows cannot initialize the device driver for this hardware. (Code 37" I tried reinstalling and installing different versions of LibUSB drivecrs but no luck. Any Help please ? Thanks, Nimish------------------------------------------------------------------------------ Own the Future-Intel(R) Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://altfarm.mediaplex.com/ad/ck/12124-176961-30367-2_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> nimish chauhan 2013-04-02T13:19:05 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5378 <pre>I'm using the LibUSBK driver in isochronous mode using the Cypress FXLP USB 2 chip. I set up a counter in an FPGA to send a fixed amount of dummy data packets through an IN endpoint to test bandwidth, data correction, etc. The set-up works fine for a few known packet sizes. I verify the data in each packet and count how many are good and bad. There is no problem if I send a total of 512 words (1024 bytes) per packet or if I send 256 words (512 bytes) per packet but when I choose an odd number of words, like 258 words (516 bytes) per packet, I get a mysterious error after a few hundred "good" packets. It looks like somehow, the data stream lost 8 words, or 16 bytes of contiguous data. The data stream picks up correctly after the lost bytes. This only happens with a packet size other than 512 or 256 words. I have the Cypress USB automatically commit packets when the IN isochronous buffer reaches 1024 bytes (512) words. I have it set up so that packets get rebuilt if they cross this 1024 byte boundary due to fragmentation. It seems however, that if the number of packets I send dont neatly fit within a 1024 byte buffer, I lose exactly 16 bytes. Is this normal? Should I limit my packet sizes to 1024, 512, 256, 128 or 64 byte sizes? ------------------------------------------------------------------------------ Own the Future-Intel&amp;reg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Julio 2013-04-01T21:17:47 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5372 <pre>Hello all. I'm attempting to get libUSB working with my custom CDC device. The first problem I am having is the ability to close and reopen a port. For instance, if the device gets removed or powered down, I'd like to be able to re-connect to the device once it powers up again. My code connects to the device the first time it's run, but calling ClosePort() and then OpenPort() causes errors. Here's what's shown in the log during the second attempt at opening: [10.950425] [000039dc] libusbx: error [winusbx_open] could not open device \\.\USB#VID_1234&amp;PID_1000#6&amp;1EE157AC&amp;0&amp;2#{A5DCBF10-6530-11D2-901F-00C04FB951ED} (interface 0): [5] Access is denied. [10.951425] [000039dc] libusbx: debug [libusb_open] could not open device: LIBUSB_ERROR_IO And here's my code: // DataMonitorUSB Class members: WORD m_VID; WORD m_PID; int m_InterfaceCount; libusb_device * m_TheDevice; libusb_device_handle *m_DeviceHandle; static libusb_context * m_USBContext; bool DataMonitorUSB::OpenPort(WORD vID, WORD pID) { int result; int iface; libusb_config_descriptor *conf_desc; CString dbgMsg; m_VID = vID; m_PID = pID; if (m_USBContext == NULL) { if ((result = libusb_init(&amp;m_USBContext)) &lt; 0) { dbgMsg.Format("Failed to initialize libusb: %s", libusb_error_name(result)); TRACE("%s\n", dbgMsg); return true; } } m_DeviceHandle = libusb_open_device_with_vid_pid(m_USBContext, m_VID, m_PID); if (m_DeviceHandle == NULL) { dbgMsg.Format("DataMonitorUSB::OpenPort libusb_open_device_with_vid_pid Failed."); TRACE("%s\n", dbgMsg); return true; } m_TheDevice = libusb_get_device(m_DeviceHandle); TRACE("Reading configuration descriptors:\n"); if (libusb_get_config_descriptor(m_TheDevice, 0, &amp;conf_desc) &lt; 0) { return true; } m_InterfaceCount = conf_desc-&gt;bNumInterfaces; for (iface = 0; iface &lt; m_InterfaceCount; iface++) { TRACE("\nClaiming interface %d...\n", iface); result = libusb_claim_interface(m_DeviceHandle, iface); if (result != LIBUSB_SUCCESS) { dbgMsg.Format(" Failed: %s", libusb_error_name(result)); TRACE("%s\n", dbgMsg); } } libusb_free_config_descriptor(conf_desc); return false; } void DataMonitorUSB::ClosePort() { if (m_DeviceHandle != NULL) { for (int iface = 0; iface &lt; m_InterfaceCount; iface++) { TRACE("Releasing interface %d...\n", iface); libusb_release_interface(m_DeviceHandle, iface); } // libusb_reset_device(m_DeviceHandle); libusb_close(m_DeviceHandle); m_DeviceHandle = NULL; m_InterfaceCount = 0; } #if 0 if (m_TheDevice != NULL) { libusb_unref_device(m_TheDevice); m_TheDevice = NULL; } #endif } I've tried several variations of OpenPort(), including enumerating through the list returned by libusb_get_device_list(), all with the same results. Also, at first, m_USBContext was not static, and I called libusb_init() with every OpenPort() call and libusb_exit() with every ClosePort() call. Same results. Any suggestions as to what I'm doing wrong? Should this even be possible? Thanks, Dave -- View this message in context: http://libusb.6.n5.nabble.com/Closing-and-reopening-a-port-tp5711624.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Own the Future-Intel(R) Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://altfarm.mediaplex.com/ad/ck/12124-176961-30367-2 </pre> DaveD 2013-03-29T17:27:36 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5370 <pre>Hi All, Have a nice day, I had a problem , wish please help me I have a board , and it send data continuously to pc through usb communication and i have use libusbdotnet to receive on pc I had design my software to receive continuously by after receive open event, i had set DataReceivedEnabled variable in UsbEndpointReader class is Enable, but this software receive only one packet data, and after unplug and plug usb port then software just receive one packet How to fix it ? When i set DataReceivedEnabled variable in UsbEndpointReader class Enable, is this software always listen data ? Thank you Please suggest me ________________ Mr. Binh Nguyen Embedded Software Developer MYLAN OPTOELECTRONICS Lot A, Longduc Industrial Park Travinh City, Travinh Province, Vietnam Tel : +84 74 3846 997 – ext: 1503 Fax: +84 74 3846 998 Email: binh.nguyen&lt; at &gt;mylangroup.com Website: www.mylanoptoelectronics.com ------------------------------------------------------------------------------ Own the Future-Intel&amp;reg; Level Up Game Demo Contest 2013 Rise to greatness in Intel's independent game demo contest. Compete for recognition, cash, and the chance to get your game on Steam. $5K grand prize plus 10 genre and skill prizes. Submit your demo by 6/6/13. http://p.sf.net/sfu/intel_levelupd2d_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> Binh Nguyen 2013-03-27T03:22:50 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5368 <pre>Hello, I am using LibUsbDotNet for USB bulk communications. The thing is that I faced a problem with performance In case I open a lot of programs in my Windows system, the Bulk read delays and I can't transmit my data in time to the application. I am using OnDataReceive event for reading USB device. *The configuration below:* //Init USB read endpoint 2 UsbReader = mUsbDevice.OpenEndpointReader(ReadEndpointID.Ep02, 4096, EndpointType.Bulk); //Clear receive buffer UsbReader.Flush(); //Init USB write enpoint 2 UsbWriter = mUsbDevice.OpenEndpointWriter(WriteEndpointID.Ep02); /* Enable USB data reading using EventHandler */ UsbReader.ReadThreadPriority = ThreadPriority.Normal; UsbReader.DataReceived += OnDataReceived; UsbReader.DataReceivedEnabled = true; UsbReader.ReadBufferSize = 4096; How can I avoid the delay for Bulk reads in my application? The thing is that I am using USB for CAN bus messages transfer to my application. So, I need to transmit CAN messages to the application as fast as possible. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> linas 2013-03-18T15:58:27 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5366 <pre>/// &lt;summary&gt; /// Received data event from the USB device (4096 bytes per Event) /// &lt;/summary&gt; /// &lt;param name="sender"&gt;&lt;/param&gt; /// &lt;param name="e"&gt;&lt;/param&gt; public static void OnDataReceived(object sender, EndpointDataEventArgs e) { //ProcessMessage(e.Buffer, e.Count); ProcessData(e.Buffer, e.Count); } ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_mar_______________________________________________ Libusb-win32-devel mailing list Libusb-win32-devel&lt; at &gt;lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/libusb-win32-devel </pre> linas 2013-03-18T15:50:39 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5360 <pre>Hello, is it possible to use the libusb filter driver to listen to the transferred data? The idea is, to have the original device software running and just to get a copy of the streamed IN data. Best regards Ekkehard -- View this message in context: http://libusb.6.n5.nabble.com/Filter-driver-Get-a-copy-of-transferred-data-tp5711560.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev </pre> Ekkehard 2013-03-08T07:58:39 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5355 <pre> Hi everyone, I saw this had been asked a few years ago in relation to wireshark, but a final answer wasn't arrived at. Is it possible to use the win32 device filter driver to passively monitor communication from an existing driver to the USB device? I looked through the available libusb functions but could only see functions to take control and directly communicate with the USB endpoint, not monitor communications that pass by the filter driver from other software. There are other open source software solutions that can do this with XP, but they haven't been updated in 10 years, lack modern OS support, and it would be great to get this functionality in libusb. thank you for any help! ------------------------------------------------------------------------------ Symantec Endpoint Protection 12 positioned as A LEADER in The Forrester Wave(TM): Endpoint Security, Q1 2013 and "remains a good choice" in the endpoint security space. For insight on selecting the right partner to tackle endpoint security challenges, access the full report. http://p.sf.net/sfu/symantec-dev2dev </pre> AK 2013-03-08T04:35:39 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5341 <pre>I am trying to link the ..\libusb-win32-bin-1.2.6.0\lib\msvc\libusb.lib so I can use it with Visual C++ 10 Express. I keep getting the message: "1&gt;libusb.lib : fatal error LNK1136: invalid or corrupt file" I put the libusb.lib in the VC\lib directory and I added libusb.lib to the additonal dependences in VC++. Things I have tried: 1. Redownloaded libusb.lib 2. Tried linking to mscv_i64 and mscv_x64 versions of libusb.lib Same result. Help! Neal -- View this message in context: http://libusb.6.n5.nabble.com/libusb-win32-add-to-Visual-C-tp5711522.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb </pre> nealmartini 2013-03-05T17:14:59 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5340 <pre>Hello, how to spread isochronous packets in specific microframes? I am using "high-speed" transfers. So far I have seen, I can set the "StartFrame" (in milliseconds) in the IsoK_Init function. Calling UsbK_IsoWritePipe than transmits the whole block as scheduled. But how can I use only some of the packets, while others should be empty? I tried to set the Length member of the corresponding packet to 0, which does not work (explained in some other posts). For example if I had configured the data transfer to 8MB/s it would mean that every millisecond 8192 bytes becomes transferred, e.g. 8 packets each 1024 bytes. Example (X=1024 bytes, -=0 bytes) StartFrame 0 1 2 3 4 5 6 7 &lt;n&gt; X X X X X X X X &lt;n+1&gt; X X X X X X X X If my actual data rate would be the half of the above (=4MB/s) I would like to send the packets as follow StartFrame 0 1 2 3 4 5 6 7 &lt;n&gt; X - X - X - X - &lt;n+1&gt; X - X - X - X - How can I do this? Since the startframe could only set once per ISO-context I could only shorten the transfer size to the half, but for the 4 transferred packages the datarate is still 8MB/s, which I want to avoid. StartFrame 0 1 2 3 &lt;n&gt; X X X X &lt;n+1&gt; X X X X Best regards Ekkehard -- View this message in context: http://libusb.6.n5.nabble.com/libusbK-OUT-question-tp5711520.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb </pre> Ekkehard 2013-03-04T14:44:24 http://comments.gmane.org/gmane.comp.lib.libusb.devel.windows/5339 <pre>Hello, I try to get my Bulk OUT device running, but I am not happy with my results. If I set RAW_IO to 1 via UsbK_SetPipePolicy then nothing works. After sending data with UsbK_WritePipe the call of OvlK_WaitOrCancel allways returns false and the LastError is allways 1223 (ERROR_CANCELLED). Only if I leave RAW_IO untouched (e.g. 0) than data becomes transmitted. Unfortunally than the achieved bandwidth (approx &lt; 60MBit/s) is slower than expected (should reach at least more than 100MBit/s, up to more than 250MBit/s). Additionally the taskmanager shows a lot of CPU power eaten up by a hidden process, I expect that this is caused by the active buffering in the libusbK driver. Another annoying thing is, that I can only pass very small portions of data to the UsbK_WritePipe function. 512, 1024 pr 2048 Bytes are ok, but 4096 failed very often, this could be related with the actual buffer size in my device wich is 4*512 Bytes?! Any ideas of what is going wrong? Best regards Ekkehard -- View this message in context: http://libusb.6.n5.nabble.com/libusbK-Bulk-OUT-problem-tp5711519.html Sent from the LibUSB Dev - Win32 mailing list archive at Nabble.com. ------------------------------------------------------------------------------ Everyone hates slow websites. So do we. Make your web apps faster with AppDynamics Download AppDynamics Lite for free today: http://p.sf.net/sfu/appdyn_d2d_feb </pre> Ekkehard 2013-03-04T10:20:42 Search the mailing list at Gmane query http://search.gmane.org/?group=$group=gmane.comp.lib.libusb.devel.windows