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  • Program LED with just USB port

    - by LifeH2O
    I want to control LED with C# using only USB port. I don't want to attach any other device with USB. I just want to attach LED directly to USB port pins and program it (blink etc). How can i do that? I am new to hardware programming and it will be my first program. EDIT: I can do it already (blink LED) using printer port by attaching one led pin to data pin and other to ground. How can i do the same with USB port? My motherboard does not have a printer port. USB is the only option.

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  • Fast response on first Socket I/O request but slow every other time when communicating with remote serial port

    - by GreenGodot
    I'm using sockets to pass Serial commands to a remote device. And the response to that request is sent back and printed out. However, I am having a problem in that the first time it is instant but the rest of the time it can take up to 20 seconds to receive a reply. I think the problem is with my attempt at threading but I am not entirely sure. new Thread() { @Override public void run() { System.out.println("opened"); try { isSocketRetrieving.setText("Opening Socket"); socket = new Socket(getAddress(), getRemotePort())); DataOutput = new DataOutputStream(socket .getOutputStream()); inFromServer = new BufferedReader( new InputStreamReader(socket .getInputStream())); String line = ""; isSocketRetrieving.setText("Reading Stream......"); while ((line = inFromServer.readLine()) != null) { System.out.println(line); if (line.contains(getHandshakeRequest())) { DataOutput.write((getHandshakeResponse()toString() + "\r").getBytes()); DataOutput.flush(); DataOutput .write((getCommand().toString() + "\r").getBytes()); DataOutput.flush(); int pause = (line.length()*8*1000)/getBaud(); sleep(pause); } else if (line.contains(readingObject .getExpected())) { System.out.println(line); textArea.append("value = " + line + "\n"); textAreaScroll.revalidate(); System.out.println("Got Value"); break; } } System.out.println("Ended"); try { inFromServer.close(); DataOutput.close(); socket.close(); isSocketRetrieving.setText("Socket is inactive..."); rs232Table.addMouseListener(listener); interrupt(); join(); } catch (IOException e) { e.printStackTrace(); } catch (InterruptedException e) { System.out.println("Thread exited"); } } catch (NumberFormatException e1) { e1.printStackTrace(); } catch (UnknownHostException e1) { e1.printStackTrace(); } catch (IOException e1) { e1.printStackTrace(); } catch (InterruptedException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }.start();

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  • getting usb com port

    - by I__
    i have this function: private string GetUSBComPort() { string[] sPorts = SerialPort.GetPortNames(); foreach (string port in sPorts) { if (port != "COM1" && port != "COM4") { return port; } } return null; } this function is being called from form load: private void Form1_Load(object sender, EventArgs e) { serialPort1 = new SerialPort(GetUSBComPort()); if (serialPort1.IsOpen) { serialPort1.Close(); } serialPort1.Open(); //ThreadStart myThreadDelegate = new ThreadStart(ReceiveAndOutput); //Thread myThread = new Thread(myThreadDelegate); //myThread.Start(); this.serialPort1.DataReceived += new SerialDataReceivedEventHandler(sp_DataReceived); } the function is unfortunately returning null how do i get the com port to which my phone is attached to via USB?

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  • Socket c# not listen on port over internet?

    - by Nguy?n Van Th?ng
    Code server I have server listen on port 1450: //Using UDP sockets clientSocket = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp); EndPoint ourEP = new IPEndPoint(IPAddress.Any, 1450); //Listen asynchronously on port 1450 for coming messages (Invite, Bye, etc). clientSocket.Bind(ourEP); //Receive data from any IP. EndPoint remoteEP = (EndPoint)(new IPEndPoint(IPAddress.Any, 0)); byteData = new byte[1024]; //Receive data asynchornously. clientSocket.BeginReceiveFrom(byteData, 0, byteData.Length, SocketFlags.None, ref remoteEP, new AsyncCallback(OnReceive), null); but code on not open port 1450 and client connect: otherPartyIP = new IPEndPoint(IPAddress.Parse(txtCallToIP.Text), 1450); otherPartyEP = (EndPoint)otherPartyIP; When i run code client and server in lan network it's ok. but run over network i check port 1450 in lan not open. tell me how open port 1450 in code server? thanks

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  • How to switch data pins on/off on parallel port?

    - by Matt
    I want to simply switch certain data pins on and off, so that they can control a set of relays. I'm not asking about the hardware bit (should be easy), but I don't know where to begin writing the software. I don't want a high level library that can send bytes to a device - I literally want to switch on/off certain pins. I'm running Linux and I want to do this in Java, so would I just need a library? It would be nice if the library has good documentation and is easy to use, but if not then a short example code will help me get started.

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  • phpmyadmin login redirect fails with custom ssl port

    - by baraboom
    The server is running Ubuntu 10.10, Apache 2.2.16, PHP 5.3.3-1ubuntu9.3, phpMyAdmin 3.3.7deb5build0.10.10.1. Since this same server is also running Zimbra on port 443, I've configured apache to serve SSL on port 81. So far, I have one CMS script running on this virtual host successfully. However, when I access /phpmyadmin (set up with the default alias) on my custom ssl port and submit the login form, I am redirected to http://vhost.domain.com:81/index.php?TOKEN=foo (note the http:// instead of the https:// that the login url was using). This generates an Error 400 Bad Request complaining about "speaking plain HTTP to an SSL-enabled server port." I can then manually change the http:// to https:// in the URL and use phpmyadmin as expected. I was annoyed enough to spend an hour trying to fix it and now even more annoyed that I cannot figure it out. I've tried various things, including: Adding $cfg['PmaAbsoluteUri'] = 'https://vhost.domain.com:81/phpmyadmin/'; to the /usr/share/phpmyadmin/config.inc.php file but this did not correct the problem (even though /usr/share/phpmyadmin/libraries/auth/cookie.auth.lib.php looks like it should honor it and use it as the redirect). Adding $cfg['ForceSSL'] = 1; to the same config.inc.php but then apache spirals into an infinite redirect. Adding a rewrite rule to the vhost-ssl conf file in apache but I was unable to figure out the condition to use when http:// was present along with the correct ssl port of :81. Lots of googling. Here are the relevant Apache configuration pieces: /etc/apache2/ports.conf <IfModule mod_ssl.c> NameVirtualHost *:81 Listen 81 </IfModule> /etc/apache2/sites-enabled/vhost-nonssl <VirtualHost *:80> ServerAdmin webmaster@localhost ServerName vhost.domain.com DocumentRoot /home/xxx/sites/vhost/html RewriteEngine On RewriteCond %{HTTPS} off RewriteRule (.*) https://%{HTTP_HOST}:81%{REQUEST_URI} </Virtualhost> /etc/apache2/sites-enabled/vhost-ssl <VirtualHost *:81> ServerAdmin webmaster@localhost ServerName vhost.domain.com DocumentRoot /home/xxx/sites/vhost/html <Directory /> Options FollowSymLinks AllowOverride None AuthType Basic AuthName "Restricted Vhost" AuthUserFile /home/xxx/sites/vhost/.users Require valid-user </Directory> <Directory /home/xxx/sites/vhost/html/> Options -Indexes FollowSymLinks MultiViews AllowOverride None Order allow,deny allow from all </Directory> </VirtualHost> /etc/apache2/conf.d/phpmyadmin.conf Alias /phpmyadmin /usr/share/phpmyadmin (The rest of the default .conf truncated.) Everything in the apache config seems to work ok - the rewrite from non-ssl to ssl, the http authentication, the problem only happens when I am submitting the login form for phpmyadmin from https://vhost.domain.com:81/index.php. Other configs: The phpmyadmin config is completely default and the php.ini has only had some minor changes to memory and timeout limits. These seem to work fine, as mentioned, another php script runs with no problem and phpmyadmin works great once I manually enter in the correct schema after login. I'm looking for either a bandaid I can add to save me the trouble of manually entering in the https:// after login, a real fix that will make phpmyadmin behave as I think it should or some greater understanding of why my desired config is not possible.

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  • How do I correctly SSH port forward using LiveReload on Redhat?

    - by program247365
    Referencing this page: http://feedback.livereload.com/knowledgebase/articles/86280-if-you-edit-files-directly-on-your-server It says you can remotely port forward the LiveReload specific port of 35729, using this command: ssh -L 35729:127.0.0.1:35729 mylogin@myremoteserverIP When I run the -v option, I get: debug1: Local connections to LOCALHOST:35729 forwarded to remote address 127.0.0.1:35729 debug1: Local forwarding listening on ::1 port 35729. debug1: channel 0: new [port listener] debug1: Local forwarding listening on 127.0.0.1 port 35729. debug1: channel 1: new [port listener] debug1: channel 2: new [client-session] debug1: Entering interactive session. debug1: Sending environment. debug1: client_input_channel_req: channel 2 rtype [email protected] reply 1 debug1: Connection to port 35729 forwarding to 127.0.0.1 port 35729 requested. debug1: channel 3: new [direct-tcpip] channel 3: open failed: connect failed: Connection refused debug1: channel 3: free: direct-tcpip: listening port 35729 for 127.0.0.1 port 35729, connect from 127.0.0.1 port 63673, nchannels 4 I thought editing my /etc/services with this line, would work, but it doesn't: livereload 35729/tcp # livereload usage with guard-livereload Every time I attempt to connect with the browser extension, I believe It's getting blocked by my server. What am I missing here? Do I need to edit /etc/services for this to work?

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  • Connecting to MSP430 via /dev/ttyACM0

    - by speciousfool
    I'd like some suggestions about how to fix garbled serial output from a device connected on /dev/ttyACM0. Lately I've been working on a development project making use of TI's MSP430 microcontroller (specifically the eZ430-RF2560). Over on this thread you can see we've been testing some code and have found that the output of the microcontroller over serial is garbled. The btstack provides simple counter test program. When we run the program and look at the serial port output using PuTTY on Windows 7 we see: rfcomm_send_internal cid 117 doesn't exist! BTstack counter 26230 rfcomm_send_internal cid 117 doesn't exist! BTstack counter 26231 However if we connect from various Ubuntu clients we get something like: Stt.R. BTacn 0 BTacn 002BTacn 0 BTcct 04BTtacoe 5BTacun My current belief is that this is because the device is being detected by cdc_acm as a generic USB ACM device. Another thread about a similar microcontroller suggests that the device should use a specific usb serial driver. We've verified that the module is compiled on our system and did a "modprobe ti_usb_3410_5052" but this had no effect on cdc_acm. Here is the relevant section of the kernel's debug log: [ 2735.092987] usb 2-1.2: new full speed USB device number 5 using ehci_hcd [ 2735.213655] cdc_acm 2-1.2:1.0: This device cannot do calls on its own. It is not a modem. [ 2735.213669] cdc_acm 2-1.2:1.0: No union descriptor, testing for castrated device [ 2735.213720] cdc_acm 2-1.2:1.0: ttyACM0: USB ACM device [ 2745.241996] generic-usb 0003:0451:F432.0003: usb_submit_urb(ctrl) failed [ 2745.242023] generic-usb 0003:0451:F432.0003: timeout initializing reports [ 2745.242401] generic-usb 0003:0451:F432.0003: hiddev0,hidraw0: USB HID v1.01 Device [Texas Instruments Texas Instruments MSP-FET430UIF] on usb-0000:00:1d.0-1.2/input1 So, in summary, we'd like to figure out how to properly connect to this device. Also of use may be the appropriate place to file a bug report.

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  • How to Change Sharepoint Port

    - by Jack Levin
    I have a Sharepoint web application that I want to change the port it is running on. I am not sure how to do that as It seems that it is not enough to just go to the IIS console and change the web application port. I guess I need to do certain changes in the sharepoint Central administration console as well.

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  • fms port preoblem

    - by Elamurugan
    Hi, i installed fms in my server, and already its running a apache for hp, so want to run this fms as a separate port in 8083 While installing i gave port number as 8083,and now its shows in "fms.ini" ADAPTOR.HOSTPORT = 1935,8083 I think it should listen any of these ports, but its not working while am acessing domain.com:8083 domain.com:1935 Please can some body tell me why its not working Thanks in advance

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  • Remapping Linux serial port device names

    - by davefiddes
    I have a server running Debian Linux which has a built in serial port which is coming up as ttyS0. I have a plug in PCI card with two serial ports that are being registered with Linux as ttyS2 and ttyS3. Unfortunately I am trying to run some software which assumes that ttyS0 and ttyS1 are available. Is it possible to remap the serial port device names (using a udev rule?) such that ttyS0 remains as it is and ttyS2 becomes ttyS1?

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  • regarding port forwarding

    - by girinie
    Hi I have designed a chat application using servlets and jsp. I do not like it to host on any web hosting sites. I wanna make my computer only as server and wanna make it accessible to the users of different network. Can anybody explain me how can this be achieved. I will be really thankful. I was said that use port forwarding how can this be solved using port forwarding?

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  • what's the port number of mysql

    - by user28233
    I'm trying to connect mysql with vb.net, I've already downloaded the mysql connector-net. And installed it. But I don't know what is the port number , server address of mysql. Its needed in the connection string. Please help, Server=myServerAddress;Port=1234;Database=myDataBase;Uid=myUsername;Pwd=myPassword;

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  • H/w suggestions for 24 port PoE switch.

    - by sunny
    Hi, I am looking for a 24 port PoE(IEEE 802.3af) switch to power some Snom phones that I have. Please suggest some appliances. I just need basic L2 functions and wouldn't want to go for a expensive Cisco switch. Here are my requirements: 1) IEEE 802.3af PoE 2) 802.1q VLAN 3) Full-Duplex I'd like a CLI also if possible, I've looked at Vyatta, but buying their 24 port appliance is way more expensive than a d-link or a netgear one. Thanks for your suggestions

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  • HDD from Mid-2009 MacBook Pro works OUTSIDE laptop, but not INSIDE.

    - by Jaime
    Leading up to the problem: I was working late one night on a Keynote presentation. My battery ran out, and the computer did that hibernation thing it does when there's no battery power. I got my charger, connected it to my computer, and then pushed the power button. It started up for a second in to the gray screen it usually goes to. Then I turned around, tugging the magsafe charger out of the connector on the computer. This caused my computer to shut down again. Now I can't get it to boot at all -- just a blinking folder icon with a question mark in it on boot up. I've tried pretty much everything to deal with this. Multiple forced reboots, resetting PRAM and NVRAM, etc. I booted to original OSX disc and ran disc utility, but I discovered that there is no disc to boot to. I ran the Apple Hardware Test, and it came back 100% good. I booted to an Ubuntu live-boot disc and ran that disc utility, just to see if it recognized a disc at all. It didn't. So I removed the HDD, and replaced it with a bootable volume running BSD. It didn't recognize that HDD either. I then attached my HDD to my computer via an external enclosure with a USB interface. Lo and behold, it booted! So my computer now only work with my HDD attached externally. This means that the HDD is functional. And the AHT returns no hardware malfunctions. So what the hell is going on? … In the meantime: I've put the HDD back into the computer but it still doesn't do anything at all (I'm running it externally right now). I just checked the serial number and my 1 year warranty expired recently, so I can't send it back for repair. … Little Help Thoughts? I've been searching everywhere for leads, but no luck. …

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  • How to power a serial port under linux?

    - by Lex
    I got a serial to ethernet device connected to a Serial (COM) port on a Linux machine (debian etch), I connected it correctly but it did not power up, I suppose I need to power the device port, anyone knows how to power it under linux? Thankyou in advance.

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  • Open ports in Windows 7, firewall, public network, port 445

    - by chris
    I selected "public network" in Windows 7. Windows is listening on TCP port 445: TCP 0.0.0.0:445 WIN7TEST:0 ABHÖREN The corresponding incoming firewall rule isn't activated (4th column): When I choose "workplace network" the SMB incoming port 445 rule is still disabled in the advanced windows firewall configuration. I thought "public network" / "workplace network" and so on is influencing the windows firewall rules!? Where's the difference between workplace and public network then? http://www.abload.de/image.php?img=winfire2nxku0.png

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  • Symantec Gateway Security 320 VPN/Port Forwarding trouble

    - by Owl
    How do I check to see if port forward is enabled with one of my dynamic tunnels on this device? I'm having trouble using a feature in our software that requires a vpn to be used. My firewalls shows it as connected but I'm unable to ping the subnet ip. Our software vendor told me that port forwarding might be causing this problem, but I didn't set up this network I'm on and I don't fully know symantec hardware.

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  • I noticed the answer to the Aug 2009 question of using VBA to set Custom Flag values

    - by Gary
    We are actively using the Follow Up mail feature to assign users to particular mail follow up items. Although mail item follow ups are generally the province of the individual user, by changing the flag value from "Follow Up" to "User name", we can see each other's follow up tasks and group on responsible party. Currently we accomplish the Flag value change manually. My sense is the easiest way to perfect the process is a separate macro for each user. Along the lines of the macro to change the star/end due date to end of month, please define the macro to re-assign the Flag value for each highlighted mail item (previously assigned by default). Thank you very much.

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  • Set default system audio output port (for all accounts)

    - by Ludwik Trammer
    The default output audio port Ubuntu doesn't work on my system. It should be "Analog Mono Output/Amplifier", instead of "Analog Output/Amplifier". I can easily change that in sound preferences, just by choosing the right port in the "Output" tab. The problem is this would only apply to a single account, and I would like to change it system-wide, so it applies to all accounts on the system (I have more than 100 users...). I'm after 2 hours of Googling, so any help would be appreciated.

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  • Manually closing a port from commandline

    - by codingfreak
    Hi I want to close an open port which is in listening mode between my client and server application. Is there any manual command line option in Linux to close a port ?? NOTE: I came to know that "only the application which owns the connected socket should close it, which will happen when the application terminates." I dont understand why it is only possible by the application which opens it ... But still eager to know if there is any another way to do it ??

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