using serial port in vb 8 for data (strings)

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reading & writing in serial port from server

by: ^CeFoS^ | last post by:

Hello to everybody, I've done an application that draws in a frame the trajectory of a robot. The robot position is readed through the serial port, and several commands are wrote through the same port to change the direction of the robot. The trajectory frame is managed by an applet, and the project works good when the applet is called by a html document allocated in the same local machine under W98 where the classes and the serial port...

Java

13205

Threading and serial port access

by: willie | last post by:

Hi, I'm writing a program which requires the use of three serial ports and one parallel port. My application has a scanning devices on each port, which I can access fine with pyserial. However, I'm unsure of how exactly I should be designing the program, I thought I could use threading to start class: class scanner(Thread): def __init__(self,port):

Python

21398

"are you missing a using directive or an assembly reference?" prob

by: Junior | last post by:

I keep receiving this "The type or namespace name 'CASsEventHandler' could not be found (are you missing a using directive or an assembly reference?)" message in two particular lines, and I've tried everything... Could anyone please paste this and tell me what I'm doing wrong ? I use SerialPort.zip, which can be downloaded at http://www.gotdotnet.com/Community/UserSamples/Details.aspx?SampleGuid=b06e30f9-1301-4cc6-ac14-dfe325097c69 ...

.NET Framework

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Using Serialports with Win Forms

by: Michael Tallhamer | last post by:

I am a medical physicist new to the .Net Framework and am trying to write a simple app that will monitor the output from a serial port on one of my linear accelerators using the new Serialport object and write the output to a textBox in my application for viewing. I however keep getting this error and am unable to figure out how to get around this. System.InvalidOperationException was unhandled Message="Cross-thread operation not valid:...

C# / C Sharp

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Serial Comm Problem

by: Michael Chong | last post by:

I wrote a program that communicate with SerialComm. In every 300 milliseconds, my program continuously send & receive data via the serial port once the program starts. My program is once in a while, the serial port seems corrupted because when my data is sent, it doesn't go through the serial port, so as same to receive process. In order to fix this, I have to close the port and reopen the port again. Why?!! Is there any way to fix...

.NET Framework

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Communicating with a serial port using a web service

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...

.NET Framework

1622

problem using serialport in vb2005

by: Jan | last post by:

Hello, I want to send some simple strings to com1 using vb2005. I want to read it in Hyperterminal. I succeeded to send some data en read it in Hyperterminal, only the data I received is not the data I send. This is the code i used:

Visual Basic .NET

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Problem using serial port in vb2005

by: Jan | last post by:

Visual Basic .NET

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Serial port failure

by: Rob | last post by:

Hi all, I am fairly new to python, but not programming and embedded. I am having an issue which I believe is related to the hardware, triggered by the software read I am doing in pySerial. I am sending a short message to a group of embedded boxes daisy chained via the serial port. When I send a 'global' message, all the connected units should reply with their Id and Ack in this format '0 Ack' To be certain that I didn't miss a...

Python

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Serial Port / RS232

by: Tony K | last post by:

I have a slight problem. When attempting to receive data via my serial port I sometimes do not get the complete data. For example, I have a scanner that reads barcodes. When reading barcode after barcode, there might be 2 or 3 barcodes in a row where I do not get the complete barcode. It will be split up over 2 lines. Here is my code and an example of the data received is toward the bottom. Dim WithEvents com1 As New SerialPort

Visual Basic .NET

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What is ONU?

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...

General

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Changing the language in Windows 10

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,...

Windows Server

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Problem With Comparison Operator <=> in G++

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...

C / C++

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The easy way to turn off automatic updates for Windows 10/11

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,...

Windows Server

7770

Access Europe - Using VBA to create a class based on a table - Wed 1 May

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...

Microsoft Access / VBA

6970

Couldn’t get equations in html when convert word .docx file to html file in C#.

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();...

C# / C Sharp

5640

Trying to create a lan-to-lan vpn between two differents networks

by: TSSRALBI | last post by:

Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in the same network. But I'm wondering if it's possible to do the same thing, with 2 Pfsense firewalls...

Networking - Hardware / Configuration

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Windows Forms - .Net 8.0

by: adsilva | last post by:

A Windows Forms form does not have the event Unload, like VB6. What one acts like?

Visual Basic .NET

3999

How to add payments to a PHP MySQL app.

by: muto222 | last post by:

How can i add a mobile payment intergratation into php mysql website.

PHP