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C# Serial Port Read Timeout


Apply Today MATLAB Academy On-demand access to MATLAB training. Frame error happens from time to time. Reply Kris Janssen says: August 22, 2014 at 10:02 am Bob might be referring to a commercial library indeed (http://www.marshallsoft.com) Reply Jon Yutkowitz says: September 10, 2014 at 12:56 pm Ben, Reply Ben Voigt says: August 6, 2014 at 4:58 pm Bob, are you using a publicly available software library for wrapping the Win32 serial port API? this contact form

Anyone can tag a thread. share|improve this answer answered May 7 '14 at 15:21 Giorgio Robino 58931229 add a comment| Your Answer draft saved draft discarded Sign up or log in Sign up using Google Is there anything special you want to note about writing to a serial port? Our app suffers from sporadic RXOver errors and I suspect the combined use of properties DataReceived and BytesToRead.

C# Serial Port Read Timeout

Reply Emil Albert says: January 21, 2016 at 12:22 pm I just spent forever trying to get a serial communication to work. Reply legolas2024 says: February 24, 2016 at 9:52 am I need to read 14 bytes secuentialy an when i achieve these bytes, send to event to add to a series as There are at least two glaring issues with it. Why every address in micro-controller has only 8 bit size?

We added a bunch of logging and it showed that the call to the first Read(...) method sometimes takes 10 - 15 minutes, even with a timeout of 50ms. begin Timeout.timeout(2) do puts printer.read end rescue Timeout::Error puts "SerialPort timeout." rescue => e puts "Serialport ERROR: Failed to open: #{ e.inspect }" end Any idea to solve the point? And only for standard baud rates. C# Serial Port Write Timeout Specifically I have to print ESC/POS text data on a thermal printer, attached to a host computer with a serial line (COM/USB port).

However I'm in the need of that particular feature (the exception from the timed out read() ) because the device that the program is designed to interact with require a initialization I am curious if I will see better performance using BaseStream ReadAsync() but not exactly clear on how to handle new data arriving as efficiently as possible. You can address this problem in your apps in two ways: In your event handlers, replace every Control.Invoke call with Control.BeginInvoke, which executes asynchronously and avoids the deadlock condition. SOUP (Software of Unknown Provenance) can't have quality tested into it.

Reply Daniel says: March 16, 2015 at 9:30 am Hi Ben, Thanks for your profound explanations! Readtimeout C# Here’s my “Write & Read” portion of the code: public void SendData(ref int temp2, SerialPort _serialPort) { try { string c = Convert.ToString(temp2); byte[] array_out = Encoding.ASCII.GetBytes(c); _serialPort.Write(array_out, 0, array_out.Length); byte[] Context: I have 1Mb one directional stream of data from a device to PC. This error may be induced by attempting to read more bits than are available at the serial port.

Serial Port Timeout Set To 5 Sec

So if Read returned fewer bytes than the length of readBuffer, the above loop will print out values that were in readBuffer before the call to Read. http://stackoverflow.com/questions/1696238/c-timeout-on-serialport-open What is the rationale behind decltype behavior? C# Serial Port Read Timeout Primary Software: Driver Software>>NI-VISA Primary Software Version: 4.7 Primary Software Fixed Version: N/A Secondary Software: LabVIEW Development Systems, LabWindows/CVI Development Systems Hardware: Instrument Connectivity Other, Serial, VXI/VME/MXI, GPIB Problem: When I C# Serial Port Read Timeout Event Now, it is true that SerialStream.ReadTimeout is not as flexible as Win32 SetCommTimeouts.

Do you have any experience with the library "OpenNETCF Serial Library"? weblink One way allows you to get the raw bytes and the other way will convert the bytes to a string in the encoding specified (specified on the SerialPort object) To get Browse other questions tagged ruby serial-port timeout usb thermal-printer or ask your own question. A good way to test this in LabVIEW is to right-click the command string control on the front panel and change the display to '\' Codes Display mode. Serial Read Timeout Python

Tip 4. .NET 2.0 isn’t letting you get away with some things, such as attempting to cancel a SerialPort read by interrupting the thread accessing the SerialPort. (Note that pre-2.0, canceling Before server side scripting how were HTML forms interpreted Is there a way to easily handle functions returning std::pairs? Action kickoffRead = null;
kickoffRead = delegate { Marya says: October 6, 2014 at 10:01 am Thanks Ben for all the explanation. http://internetmairie.com/serial-port/how-to-fix-serial-port-problem.html Here's my "READ" portion of the code: public void SendData(ref int temp2, SerialPort _serialPort) { try { string c = Convert.ToString(temp2); byte[] array_out = Encoding.ASCII.GetBytes(c); _serialPort.Write(array_out, 0, array_out.Length); byte[] array_out2 =

I'm using VS 2010 with .Net 4.0. What Is Timeout In Serial Communication Meanwhile I'll use the API that doesn't introduce gratuitous reordering of events and throw unrecoverable exceptions in absence of any severe failure. Also, you probably want to concatenate the incoming partial messages, as well as handle the case when two messages arrived in one read (this might not be possible, if your device

only ReadExisting works but it doesnt read the entire data sent, it sometimes reads a charecter, two or a collection but not the whole + it always ignores the first charecter

But for me it is essential to get as much possible around it. asked 6 years ago viewed 13625 times active 2 years ago Get the weekly newsletter! You can avoid bad assumptions by either testing, or inspecting the implementation logic (JetBrains dotPeek and Red Gate .NET Reflector are good options here). C# Serialport Datareceived But you haven't, and instead of doing so, you set up a strawman argument involving Google searches.

Take care to avoid deadlock when calling Close on the SerialPort in response to a GUI event. Using BaseStream.ReadAsync will avoid the problems inside IOPSP, but you still have to fix misconfiguration. Feed for this Thread Add to My Watch List What is a Watch List? × What is a watch list? his comment is here Forum New Posts FAQ Calendar Forum Actions Mark Forums Read Quick Links Today's Posts View Site Leaders What's New?

So probably not tied to the OS itself. Here’s what Read actually does. When it does not receive data it hangs forever, ignoring my set timeout. I suggest either using python's Win32 API support to call the OS APIs directly or an existing python serial library.