Bulk device usb transfer

The device configuration.Get and show USB descriptors in the UIExtend the app to get and show USB descriptors in the UI.Quickstart: How to get USB descriptors (UWP app)Get the device descriptor by getting the UsbDevice.DeviceDescriptor value.Get the configuration descriptor by getting the UsbConfiguration.ConfigurationDescriptor value.Get the full configuration descriptor set by getting the UsbConfiguration.Descriptors property.Get the array of interfaces within the configuration by getting the UsbConfiguration.UsbInterfaces property.Get the array of alternate settings by getting UsbInterface.InterfaceSettings.Within the active alternate setting, enumerate pipes and get the associated endpoints.These objects represent endpoint descriptors:UsbBulkInEndpointDescriptorUsbBulkOutEndpointDescriptorUsbInterruptInEndpointDescriptorUsbInterruptOutEndpointDescriptorFind it in the sample: See files named Scenario5_UsbDescriptors.Send vendor-defined USB control transfersExtend the app to send vendor-defined USB control transfers.Quickstart: How to send a USB control transfer request (UWP app)Get the vendor command from the hardware specification of the device.Create a UsbSetupPacket object and populate the setup packet by setting various properties.Start an asynchronous operation to send the control transfer by these methods depending on the direction of the transfer:SendControlInTransferAsyncSendControlOutTransferAsyncFind it in the sample: See files named Scenario2_ControlTransfer.Read or write bulk dataExtend the app to read or write bulk data.Quickstart: How to send a USB bulk transfer request (UWP app)Get the bulk pipe object (UsbBulkOutPipe or UsbBulkInPipe).Configure the bulk pipe to set policy parameters.Set up the data stream by using the DataReader or DataWriter object.Start an asynchronous transfer operation by calling DataReader.LoadAsync or DataWriter.StoreAsync.Get results of the transfer operation.Find it in the sample: See files named Scenario4_BulkPipes.Get hardware interrupt dataExtend the app to get hardware interrupt data.Quickstart: How to send a USB interrupt transfer request (UWP app)Get the interrupt pipe object (UsbInterruptInPipe or UsbInterruptOutPipe).Implement the interrupt handler for the DataReceived event.Register the event handler to start receiving data.Unregister the event handler to stop receiving data.Find it in the sample: See files named Scenario3_InterruptPipes.Select an interface setting that isn't currently activeExtend the

Mats_WebjörnDec 14, 2014 03:01 PM Interesting! I will try that 1. Very Slow Data Transfer Rate Posted Feb 04, 2014 09:44 PM System Setup:+ Running VMWare Workstation 10+ Host is Windows 7 and Guest is Windows XP Pro with the latest updates+ Have USB 3.0 HUB connected to Host's built in USB 3.0 portHere is the problem I'm facing: It's takes about 15 time longer to offload the data off a USB 2.0 flash drive from the Guest?+ Takes about 33 seconds to offload 584MB from Host (Windows 7)+ Takes about 6 minutes to offload the same 584MB from Guest (Windows XP)+ I also tried to offload the same data without using the USB 3.0 Hub since my USB Flash drive is 2.0 but it still took about 6 minutes to offload from Guest.Does anyone know why it takes so much longer in Guest compared to Host? Anyway to speed up the data transfer rate?James 2. RE: Very Slow Data Transfer Rate Posted Nov 13, 2014 03:28 PM I have a similar issue with Workstation 10 running Win7.If we let the device enumerate directly to the host running Win7 (no VM involved) and run our test app which sends and recieves data over two bulk pipes, then host sends data to the device with 200us intervals, and polls the device at corresponding intervals.But if we instead let the device enumerate in the VM then we can see that buffers from app in VM are queued down to host USBD on almost exactly 1.5ms intervals. There are no attempts by the host inbetween these intervals to send an out-token to the bulk-ep.Correspondingly the host sends an in-token to the device bulk-ep only every 1.5ms thus causing a serious degradation of performance.So, it seems like Workstation has some scheduling mechanism running on 1.5ms intervals which takes buffers queued down to the device, and forwards them down to host USBD.Are there any configuration parameters which control this behaviour? 3. RE: Very Slow Data Transfer Rate Posted Dec 13, 2014 01:53 PM Did you or anyone else find a solution to this issue? we are experiencing a similar problem communicating with a USB connected device - Industrial Automation Controller PLC -My environment is Windows 7 64-bit Host with a Windows 7 64-Bit Guest running VMware® Workstation 10.0.4 build-2249910The device is USB 1.1 and I've tried USB capability setting for the USB Controller configure for the Virtual Machine for USB 1.1, USB 2.0 and USB 3.0. Same results all settings.I have search KB but coming up with nothing and came here. This was the first post(s) I hit that seems to be dead on with my problem. 4. RE: Very Slow Data Transfer Rate Posted

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