usb

Please have a look at the following header file #pragma once using namespace UsbLibrary; ref class MissileLauncher { public: MissileLauncher(void); private: //Bytes used in command unsigned char UP[10]; unsigned char RIGHT[10]; unsigned char LEFT[10]; unsigned char DOWN[10]; unsigned char FIRE[10]; unsigned char STOP[10]; unsigned char LED_OFF[9]; unsigned char LED_ON[9]; UsbHidPort USB; }; I am using a Visual C++ project (C++/CLI ?) in visual studio professional 2010. When I run this code, I get lot of errors Error 1 error C4368: cannot define 'UP' as a member of managed 'MissileLauncher':

I want to use this JAR file ( http://sourceforge.net/projects/uirt-j/ ) in my project. In Eclipse I used th option Project > Java Build Path > Add External JARs to import it. I can see all classes of JAR file in Ecplise. This JAR contains two dll files. In order to load dlls, I put into System32 dir, but when a execute my code, a I get the follow error: Exception in thread "main" java.lang.UnsatisfiedLinkError: C:\Windows\System32\util_USBUIRT.dll: Can't find dependent libraries at java.lang.ClassLoader$NativeLibrary.load(Native Method) at java.lang.ClassLoader.loadLibrary0(Unknown Source) at

I am using Mike O Brien's HID Library to connect to digital scale, Device opens successfully then displays device attached & removed messages perfectly. But only runs OnReport for about 20 times initially After Inital approx 20 runs on OnReport it never runs again, unless I remove usb cable and re-connect. My code is below if (scale.IsConnected) { scale.Inserted += DeviceAttachedHandler; scale.Removed += DeviceRemovedHandler; scale.MonitorDeviceEvents = true; scale.ReadReport(OnReport); MessageBox.Show("Hold Application Here"); Event Handlers for the scale private void DeviceAttachedHandler()

We have a .Net library that accesses some custom hardware via a USB port. I've read that Silverlight contains a subset of the .Net runtime. So, my question is, would this subset be sufficient for the .Net library to function? YES YOU COULD an update only for people like me that founds this question, here the answer: http://blogs.msdn.com/b/silverlight_sdk/archive/2011/09/27/pinvoke-in-silverlight5-and-net-framework.aspx No, you cannot use a .NET library that accesses a USB port from inside Silverlight. The closest you can get is an SL4 Out-of-browser app with elevated privs which can use COM

I'm writing an application that communicates by sending bytes to the USB port. I'd like to allow the user to choose the port and to do that, I use SerialPort.GetPortNames() . Unfortunately, it returns an empty array. The method supposedly reads the registry for data (HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM), but the SERIALCOMM directory is missing. When I run the program on Linux, it lists my four USB ports, as expected. How can I fix the registry/discover the ports in a different way? The SerialPort.GetPortNames() are the correct method to discover serial ports. But if you are using

I have so far gotten to the stage of finding the device, now I am ready to talk to the USB using the devices protocol laid out in the specification on page 22. libusb is installed on my machine and so is PyUSB. import usb.core import usb.util # find our device dev = usb.core.find(idVendor=0x067b, idProduct=0x2303) # was it found? if dev is None: raise ValueError('Device not found') # b are bytes, w are words reqType = '' bReq = '' wVal = '' wIndex = '' dev.ctrl_transfer(reqType, bReq, wVal, wIndex, []) The above example is attempting to use a control transfer, which I assume is what the