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by: Andreas Horneff |
last post by:
Hi @ all,
I've got a problem with serial communication in Borland C++ Builder. I've
already found a
lot of stuff about serial communication in the internet, but it dosen't
work.
What I want to do:
I want to connect only one button to my com port. If the button is pressed,
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by: carmen |
last post by:
I'm working in an aplication for a Smart Device that need to "talk" with a
printer continuosly through the serial port. I'm trying to use the John
Hint's sample code "Use P/Invoke to develop a .NET Base Class Library for
Serial Device Communication" but I'm new with VC# and need some basic rules
because I have a lot of compilation errors.
Where should I create my inherited class?
Thank you
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by: Vidya Bhagwath |
last post by:
Hello Experts,
I am porting the C++ code into the Visual C#.NET. My C++ code is
mainly based on the serial communication. So I am using the windows
structure such as DCB.. etc and the windows functions frequently in my
C++ code. I came to know how to import the windows functions into
Visual C#.NET. But what is the method to import windows structure into
Visual C#.NET?
It will be very helpful for me if anybody can give me the WebID that...
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by: _Doug |
last post by:
WriteFile hangs when running serial (RS232) program
on WinXP. Works okay on Win98.
Breaking at the WriteFile (ThreadEntry...WriteFile) and then
single stepping with debugger causes no exit from WriteFile
and it goes immediately to another thread (App::InitInstance > DoModal >
PumpMessage > page::OnTimer).
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by: Leandro Berti via DotNetMonster.com |
last post by:
Hi All,
I wrote a code to do serial communication with an equipament.
When i use the code outside of threaded class it seens work properly,
but when i put inside a class and execute a thread in the first seconds the
communication is ok, later i receive read/write error.
I?ve been in MSDN site and there i discover that the read/write error is a
INVALID_HANDLE problem. But why??? I just create the serial communication
file and use it....
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by: joe bloggs |
last post by:
I am writing a mobile application to interface with a legacy system and I am
planning to use web services to communicate with this system. The legacy
system receives data through a serial port. What I would like to do is make
the serial port accessible via a web service.
The web service and the legacy application would be running on the same
machine. The mobile application would access the web service via a network
connection. It...
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by: max_mont |
last post by:
Hi all,
I'm a newbie in .NET technology.
I've already developed Serial communication applications in C++
(WIN32).
And I wanted to migrate to .NET technology.
There is a serial component in framework to read and write on serial
port.
I would like to make asynchronous reception. I saw that we can pass a
delegate to the serial class which is call when some data is readen on
the port.
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by: Adrian Chen |
last post by:
please help me! I come across a problem.
Now I develop a finger print management system which is based on B/S.When
users click a button in the web pages, a device connected to the COM1 serial
port of the client machine starts to work.
Now I wrote the code which is in charge of serial communication in the
..aspx.cx pages, but then I found that when uses click the button, it is the
server's serial port that starts to work,not the clients!!
...
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by: Dhananjay |
last post by:
Hi,
I am working on an VB.Net application which I want to communicate to
external device using comm port (Serial Port) .
So for that first I am trying to simulate the communication on serial
port between two computers using HYper terminal on both the machines.
Both these computers are connected on serial port using DB9(f) null
modem (Cross) cable.
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by: marktang |
last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main usage, and What is the difference between ONU and Router. Let’s take a closer look !
Part I. Meaning of...
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by: Oralloy |
last post by:
Hello folks,
I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>".
The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed.
This is as boiled down as I can make it.
Here is my compilation command:
g++-12 -std=c++20 -Wnarrowing bit_field.cpp
Here is the code in...
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by: jinu1996 |
last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that captivates audiences and drives business growth.
The Art of Business Website Design
Your website is...
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by: Hystou |
last post by:
Overview:
Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows Update option using the Control Panel or Settings app; it automatically checks for updates and installs any it finds, whether you like it or not. For most users, this new feature is actually very convenient. If you want to control the update process,...
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by: tracyyun |
last post by:
Dear forum friends,
With the development of smart home technology, a variety of wireless communication protocols have appeared on the market, such as Zigbee, Z-Wave, Wi-Fi, Bluetooth, etc. Each protocol has its own unique characteristics and advantages, but as a user who is planning to build a smart home system, I am a bit confused by the choice of these technologies. I'm particularly interested in Zigbee because I've heard it does some...
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by: isladogs |
last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM).
In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules.
He will explain when you may want to use classes instead of User Defined Types (UDT). For example, to manage the data in unbound forms.
Adolph will...
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by: conductexam |
last post by:
I have .net C# application in which I am extracting data from word file and save it in database particularly. To store word all data as it is I am converting the whole word file firstly in HTML and then checking html paragraph one by one.
At the time of converting from word file to html my equations which are in the word document file was convert into image.
Globals.ThisAddIn.Application.ActiveDocument.Select();...
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by: adsilva |
last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
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by: 6302768590 |
last post by:
Hai team
i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
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