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by: Steve T |
last post by:
Hi,
I am developing some software in C++ to access a PMC card in a PC. The PMC
card comes with a set of C++ libs to access it and to handle interrupts from
it. I am therefore writing entirely in C++ at the application level and have
no access to the device driver for the PMC.
My design involves:
- a single process running on the host machine to handle all DMAs from the
PMC to the host.
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by: salsipius |
last post by:
I can't figure this out, Please Help!!!! I would appreciate any remarks
or opinions or help about the code below.
A you can see I am writing and reading from the serial port, that is
going OK MOST of the time. My big problem is when I want to break the
while loop. I am expecting a message in HEX to come in from the serial
port. for instance "0004 600A", which I get most of the time, sometimes
I just get random ASCII chars, anyway to the...
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by: Urs Vogel |
last post by:
Hi
For my application server, I had to overcome some limitations in older
COM-database drivers, whers sessions per driver instance are limited.
Instantiating the COM component several times does not help, since it still
reports the same Process ID to the DB server, so the limit persists.
When launching several external components (EXEs), each loading its own
database driver, the limitation problem is solved. I built this using .Net...
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by: Karl |
last post by:
Hi,
I've been trying for some time to establish reliable serial comms for
a 4-port system, i.e. with the two regular COM1 and COM2 on the
motherboard and with a dual PCI serial card (COM3 and COM4). The
serial class I have works fine with COMs 1 and 2, but I can only read
from COMs 3 and 4, not write. Other applications seem to work fine
with all the ports, so it's not a hardware issue. Is there something
special I need to do when...
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by: Zahid |
last post by:
Hi,
Im a little confused with sending and receiving data
using UDP comms.
Im writing an app that sends and recieves data (a byte
array) using the UDP protocol. The data I send is 36
bytes long (confirmed when I display "data.length -1").
But when I receive the data on the other end and
do "Data.length - 1" It displays 35 (1 size smaller than
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by: Charles Law |
last post by:
I have a frustrating problem where WaitOne does not return when I expect.
I am using an AutoResetEvent with an overlapped structure in a call to
WaitCommEvent. The data I am expecting on the serial port is 23 bytes long,
and is sent in response to a command.
I begin timing before sending the command, and display split times when
received data is signalled. The entire exchange of command and response is
over within 6 ms (I have checked...
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by: =?Utf-8?B?SG93YXJkIFNtaXRo?= |
last post by:
I am using VC++ 6.0 (with SP5 installed). When using WinXP this is with SP2
installed.
I am developing an instrumentation system comprising a set of networked PCs
connected using TCP/IP TCP links. Communications on the Windows PCs use a
class derived from CAsyncSocket(). I have written client and server versions
of my software for use on the appropriate PCs.
I am also using communicating with a legacy DOS based system, with the
software...
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by: Kevin |
last post by:
I would appreciate it if anyone could help or advise on coding for comms.
I am using C# and need to be able to open a comms port, send a command to a
device, receive the data back and close the port.
Also need to be able to set up the comms parameters Baud rate stop bits
parity etc.
Can anyone please advise or help me.
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by: Tym |
last post by:
Not sure this is the right group - but here goes.
I kinda expect Dick Grier to jump in on this one ;-)
I've got a windows app in VB.Net 2005 which sends and receives text messages
via a USM GSM modem. THe app cycles to poll the modem for incoming SMS as
well as pausing this cycle to send...
Working absolutely fine... except....
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by: adlloyd |
last post by:
Hi all,
I've got an application that's written in C++ making use of MFC (VS6). Its purpose is to process SMS messages received from a GSM modem connected via a serial port (USB connection). The serial communications are handled entirely in their own thread.
For the most part this works perfectly.However, there appears to be a problem where multiple instances of the application are running in different Windows XP environments.
It seems...
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by: Hystou |
last post by:
Most computers default to English, but sometimes we require a different language, especially when relocating. Forgot to request a specific language before your computer shipped? No problem! You can effortlessly switch the default language on Windows 10 without reinstalling. I'll walk you through it.
First, let's disable language synchronization. With a Microsoft account, language settings sync across devices. To prevent any complications,...
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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...
|
by: agi2029 |
last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then launch it, all on its own....
Now, this would greatly impact the work of software developers. The idea...
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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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by: bsmnconsultancy |
last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating effective websites that not only look great but also perform exceptionally well. In this comprehensive...
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