473,799 Members | 2,927 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

JAVA and virtual port, please help!

Hi!

I've been doing loads of work using RXTXcomm java class lately, and it was
used for communication with serial port (the real one, ttyS0)
Now, I have a big problem (at least that's what it seems to be for me) - I
have mapped (mknod) a virtual port, and need to communicate with it. And so
it happends that this class (RXTXcomm), the
CommPortIdentif ier.getPortIden tifier (or ...Identifiers) just does not see
it at all. As if it was not there... and I just have no idea how to get to
it.

more detailed - I use this port to communiacte with BlueTooth device via
bluetooth usb stick. I do mknod /dev/rfcomm0 c 216 0 and when I connect to
it using some terminal device, it seems to be working fine. But, when I try
to find it using RXTXcomm, it does not exist.

Can anyone give me some idea what to do next, seems to me that RXTX just
cannot read non-physical ports. am I right?
Please, please, please... any help would be a GREAT help to me on this!

Biiiiiiiiiiiiig thanks in advance!

..z.
Jul 17 '05 #1
0 2048

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

4
5430
by: Lorenzo | last post by:
hi you all, first of all apologies for having cross-posted this message but really i did not know where to post it. please let me know what ng you consider the most suitable for the described issue. i wrote a program made by a client and a server that communicate via RMI premise 1) everything has been developed and executed on WinXP Professional and the following jre
47
5186
by: Theatre Mgmt | last post by:
Sun project seeks to solve Java memory, execution issues http://story.news.yahoo.com/news?tmpl=story&u=/infoworld/20050325/tc_infoworld/58059&e=1&ncid= San Francisco (InfoWorld) - Sun Microsystems Laboratories (Sun Labs) is working on a research effort to address issues with the memory footprint, startup and execution times when running multiple Java applications concurrently. The Multi-Tasking Virtual Machine (MVM), developed as a...
11
9274
by: DrUg13 | last post by:
In java, this seems so easy. You need a new object Object test = new Object() gives me exactly what I want. could someone please help me understand the different ways to do the same thing in C++. I find my self sometimes, trying Object app = Object(); Object *app = Object(); Object app = new Object();
7
1876
by: Ralph Mason | last post by:
I was looking at this page http://www.garret.ru/~knizhnik/dybase/doc/dybase.html And noticed running the same code (Java ported to C# using the MS tool I expect) that the C# implementation is over 50% slower than Java in all tests. Coming in at the same speed as Ruby, which isn't known for it's speed, but is totally dynamic and interpreted. Something doesn't seem quite right.
1
9657
by: David Van D | last post by:
Hi there, A few weeks until I begin my journey towards a degree in Computer Science at Canterbury University in New Zealand, Anyway the course tutors are going to be teaching us JAVA wth bluej and I was wondering if anyone here would be able to give me some tips for young players such as myself, for learning the language. Is this the best Newsgroup for support with JAVA?
34
18276
by: antonyliu2002 | last post by:
I've set up the virtual smtp server on my IIS 5.1 like so: 1. Assign IP address to "All Unassigned", and listen to port 25. 2. Access Connection granted to "127.0.0.1". 3. Relay only allow "127.0.0.1". 4. Authentication: "Anonymous access" only. 5. Outbound connection listen to TCP 25. Besides,
3
11638
by: naveen.sabapathy | last post by:
Hi, I am trying to use virtual serial ports to develop/test my serial communication program. Running in to trouble... I am using com0com to create the virtual ports. The virtual ports seem to be working fine when I test it with Hyperterminal . I am using the example program that comes with pyserial, as below. --------------- import serial
63
4996
by: s0suk3 | last post by:
I've been programming Python for a couple of years now. Now I'm looking to move on to either C++ or Java, but I'm not sure which. Which one do you think will be a better transition for a Python programmer? Which one will educate me the best?
3
11684
by: TsanChung | last post by:
I want to make a java TCP socket client to communicate with a TCP server socket on linux. Are there some sample C unix server and java client socket programs available? The Richard Stevens' "Unix network programming" book described a TCP server (tcpcliserv04.c) and client (tcpcli04.c). I compiled and executed them successfully as follows: $ tcpcliserv04 &
0
9687
marktang
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...
0
9541
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,...
0
10482
Oralloy
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...
1
10225
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,...
0
10027
tracyyun
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...
0
6805
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();...
0
5463
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...
0
5585
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
2
3759
muto222
by: muto222 | last post by:
How can i add a mobile payment intergratation into php mysql website.

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.