usbserial

Edit: I've added the sending code and an example of the received output I'm getting. I am reading data from a USB "virtual" serial port connected to an embedded system. I have written two methods for receiving the data, one synchronous and one asynchronous. The synchronous one works, and the asynchronous one loses or scrambles a little bit of the incoming data. I cannot tell why the second one fails. The method that works calls SerialPort.Read with a read timeout set to zero, and it requests everything in the receive buffer. I check the return value to see how many bytes were actually read and

I am reading data from multiple identical USB-serial adapters under Ubuntu 10.1. On occasion, their /dev/tty path changes (eg if other USB devices are connected on startup). I need a way of repeatedly referring to the same adapter through any such changes. The devices all have the same serial numbers, according to udevadm. I think the most likely option is to identify an adapter by which port it is connected to (they don't get moved around). I can find all sorts of interesting /dev paths that might work, but despite all the discussion about udev online, I can't locate a definitive statement

Anybody knows how to set the parity with the controlTransfer in Android? I can't find the explanation of this method's parameters anywhere - just some generic info in the ref. One example I found says: conn.controlTransfer(0x40, 0x04, 0x0008, 0, null, 0, 0); //data bit 8, parity none, stop bit 1, tx off But I need to change the parity. Anybody has an idea? Many thanks! yokks You can define the combination of bits to create your own configuration (parity, stop bit & data bit). conn.controlTransfer(0x40, 0x04, 0x0008, 0, null, 0, 0); 1st parameter - 0x40 - request to set or get control data

I am working on an android application to read data from USB. The usb can be connected to android with serial port and my app can find it. Now, I want to read data files and folder from USB. I have read many articles. I found that they use this code : Environment.getExternalStorageDirectory(); However in my case, I got that the path is /storage/emulated/0. When I try to read all the files which are contained in the path, I got the following statements: /storage/emulated/0/Android /storage/emulated/0/Music /storage/emulated/0/Podcasts /storage/emulated/0/Ringtones and etc. but the path of my

I'm trying to fix a non-responsive USB device that's masquerading as a virtual COM port. Manual replugging works, but there may be up to 12 of these units. Is there an API command to do the programmatic equivalent of the unplug/replug cycle? What about using Devcon.exe to "remove" and then "rescan"? DR You can use the C# Hardware Helper Lib and add the ResetDevice function . public bool ResetDevice( IntPtr hDevInfo, IntPtr devInfoData ) // Need to add // public const int DICS_PROPCHANGE = ((0x00000003)); // at the public class Native under //PARMS int szOfPcp; IntPtr ptrToPcp; int