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by: Dan |
last post by:
I wnat to see in browser an status from an device connected on rs232
port
The java class for read from serial port is:
//Serial.java
import java.io.*;
import java.util.*;
import java.lang.*;
import javax.comm.*;
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by: Przemo |
last post by:
Hi,
Do you know some good RS232C class? There is one in
VB.NET 101 Examples, but I think it is poor.
1.
I can't for e.g. read into my application all data
received. I must tell how many bytes I would like to
read. If I specify too many exception occures, if too
less there are still some data in buffer.
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by: Ken Breit |
last post by:
I am using the RS232.vb class to talk to the serial port. The problem I am
having is when I try to read if anything is on the comm port. I call the
read method, with the number of bytes I am expecting to read. As long as I
know the length of the command that I will be getting on the input of the
port it works great.
The problem is when I don't know how long the data I am receiving is. If I
request more bytes than I know I am getting...
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by: Terry Olsen |
last post by:
I'm trying to use the RS232 class that was in the Platform SDK (i think).
Has anyone else used this with events successfully? Here's what i've got:
======================
Public WithEvents bbsPort As Rs232 = New Rs232
With bbsPort
.BaudRate = baud
.DataBit = dataBits
.Parity = parity
.Port = comPort
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by: jay.dow |
last post by:
I want to write to the pins of an RS232 without using the serial
protocol. The use would be every pin could act to complete a circuit
in customized hardware. I could use python to communicate serially to
a BASIC stamp or a Javelin stamp and then use the stamp to set however
many pins as 0's or 1's but should it be that hard to do with python.
I've looked through how python does serial with the "serial" module but
it just uses Java's...
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by: KCUK |
last post by:
I have created a software to receive data from an equipment through RS232 communication. It is a simple application of the RS232 class. The software does receive strings from the equipment every time an event is triggered on it. The Expecting reading data is expected like this example:
{Rd,d:02123579ABCDEF000098EB18, .........
If so, I can retrieve wanted data from this returned string. However, the Actual reading data is rather not...
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by: Dave Harry |
last post by:
I found the RS232 class from MS's 101 VB samples.
Writing to the port works fine. (I've got hyperterminal on the other comm
port and a crossover cable between COM1 and COM2)
The port is opened with:
Public switchcom As New Rs232
switchcom.Open(2, 57600, 8, Rs232.DataParity.Parity_None,
Rs232.DataStopBit.StopBit_1, 512)
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by: Henning M |
last post by:
Hi all,
Im trying to send a command to my uprocessor project, but when i try to read
the answer for the uPU I get the same commed I just send to it???
It is as if the command isn't send before I close the connection?
Can it have something to do with Async/sync read/write????
Everything works when I just type the commands i Hyper Terminal
I get the respond as I should...
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by: kvu95111 |
last post by:
Hi All,
I have wrote a simple program using RS232 protocol. However, I have the following problem in hand.
I used the software to receive data from a RFID reader (you may simply treat it like a barcode scanner) through RS232 communication. The software does receive strings from the reader every time an event is triggered (i.e. a tag is read by the reader). I'm sure the Expecting reading data should look similar to this:
...
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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: 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: 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: 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...
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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:
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