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  • Sharing serial port (Modem protocol + dialer)

    - by debita
    Hi, I wanted to use this code to send archives with Xmodem: http://www.java2s.com/Code/Java/Network-Protocol/JModemsimplecommunicationsprogram.htm In this case, I want to establish a dialup connection between two computers and send a binary file. But this code doesn't let me set a phone number to dial after i setup the port and before I transfer the file. Is there any way of sharing the port with another application that dials the phone number?

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  • Network IO using Credentials

    - by John
    Is it possible to move files from a network location that requires credentials to another network location that also requires credentials without mapping any drive. (ie: Without any use of P/Invoke) Example: FileInfo fi = new FileInfo(@"\\SomeComputer\SomeDrive\SomeFolder\someFile.txt"); fi.MoveTo(@"\\AnotherComputer\AnotherDrive\AnotherFolder\AnotherFile.txt"); This works fine if the source and destination network drives are already mapped but if they are not It doesn't.

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  • Server port 16080 problem: webserver adds the port number 16080 in the URL

    - by Juri
    Hello everybody. On my wordpress website one little thing doesn't work. Sometimes the Webserver adds the port number 16080 in the URL, which leads to an error (network timeout). Wrong: http://www.example.com:16080/about-us/weekly-program/?month=may&yr=2010 Correct: http://www.example.com/about-us/weekly-program/?month=may&yr=2010 Has someone a "Server port 16080 problem fix"? Is it possible, that I need to add a ServerName directive to the config file to tell the domain name of the server? Cheers Juri !!!update!!! PS: Here is the site configuration, don't ask me to change the 16080 to 80, because that screwes up everyone else's websites... Please let me know what you think of the configuration: ## Default Virtual Host Configuration <VirtualHost *:16080> ServerName example.com ServerAdmin [email protected] DocumentRoot "/Library/WebServer/Documents/WMsites/example.com/wordpress" DirectoryIndex "index.html" "index.php" CustomLog "/var/log/httpd/access_log" "%{PC-Remote-Addr}i %l %u %t \"%r\" %>s %b" ErrorLog "/var/log/httpd/error_log" ErrorDocument 404 /error.html <IfModule mod_ssl.c> SSLEngine Off SSLLog "/var/log/httpd/ssl_engine_log" SSLCertificateFile "/etc/certificates/Default.crt" SSLCertificateKeyFile "/etc/certificates/Default.key" SSLCipherSuite "ALL:!ADH:RC4+RSA:+HIGH:+MEDIUM:+LOW:!SSLv2:+EXP:+eNULL" </IfModule> <IfModule mod_dav.c> DAVLockDB "/var/run/davlocks/.davlock100" DAVMinTimeout 600 </IfModule> <Directory "/Library/WebServer/Documents/WMsites/example.com/wordpress"> Options All -Indexes -ExecCGI -Includes +MultiViews <IfModule mod_dav.c> DAV Off </IfModule> AllowOverride All </Directory> <IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{REQUEST_METHOD} ^TRACE RewriteRule .* - [F] </IfModule> <IfModule mod_alias.c> </IfModule> LogLevel warn ServerAlias www.example.com ServerAlias example.com </VirtualHost>

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  • why can't I open a port on Win 7? is it the app's fault?

    - by rjnagle
    I am having problems opening a port from one Windows PC on my local network. On Windows 7 computer ("Computer A") I running Calibre, an ebook management program that has something called an "ebook content server" . In essence, it serves via the web a content catalog. From Computer A, I can access the content server on localhost. ie. http://127.0.0.1:8787 calls up the content server successfully. With ipconfig I have confirmed that its local IP address is 192.168.1.106 From Computer B (a Vista Machine) I can ping 192.168.1.106 I have tried opening/editing a port in the Windows Firewall several times. In Windows firewall -- Allowed Programs in Control Panel, I see a listing for Calibre (with both Home/Work and PUblic checked) In details, I see Name: Calibre, Port Number 8787, Protocol TCP If I use the Advanced Security configuration screen for the firewall, I created an Inbound Rule on Computer A for Calibre (with the settings I indicated). If I run this command line on Computer A, I see: netstat -a -n TCP 0.0.0.0:554 0.0.0.0:0 LISTENING TCP 0.0.0.0:664 0.0.0.0:0 LISTENING TCP 0.0.0.0:2869 0.0.0.0:0 LISTENING TCP 0.0.0.0:3306 0.0.0.0:0 LISTENING TCP 0.0.0.0:5357 0.0.0.0:0 LISTENING TCP 0.0.0.0:6570 0.0.0.0:0 LISTENING TCP 0.0.0.0:6580 0.0.0.0:0 LISTENING TCP 0.0.0.0:8787 0.0.0.0:0 LISTENING TCP 0.0.0.0:10243 0.0.0.0:0 LISTENING TCP 192.168.1.106:63020 74.125.227.51:80 TIME_WAIT TCP [::]:80 [::]:0 LISTENING TCP [::]:135 [::]:0 LISTENING TCP [::]:443 [::]:0 LISTENING TCP [::]:445 [::]:0 LISTENING TCP [::]:554 [::]:0 LISTENING TCP [::]:2869 [::]:0 LISTENING TCP [::]:5357 [::]:0 LISTENING TCP [::]:6570 [::]:0 LISTENING TCP [::]:6580 [::]:0 LISTENING TCP [::]:10243 [::]:0 LISTENING TCP [::]:49152 [::]:0 LISTENING TCP [::]:49153 [::]:0 LISTENING TCP [::]:49154 [::]:0 LISTENING TCP [::]:49155 [::]:0 LISTENING TCP [::]:49170 [::]:0 LISTENING And lots of other junk, but this seems relevant, I see port 80 is open (I run xampp apache web server for windows on Machine A) This is the only time I see port 8787 referenced from the netstat commmand. From Windows Computer B, I can, ping 192.168.1.106 and even view http://drupal.local (on Computer A) and http://192.168.1.106/ (which goes to the Xampp config screen on Computer A). But I cannot access via Computer B htttp://192.168.1.106:8787 or htttp://computerhosta:8787 So what is going wrong? Is this a problem with the Calibre application or have I incorrectly opened the port? What things could possibly interfere with the opening of this port? On a sidenote, I have tried using telnet from Computer B to see if port 80 or 8787 is open for 192.168.1.106. I get no reply for either one. Thanks.

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  • Direct IO enhancements in OVM Server for SPARC 2.2(a.k.a LDoms2.2)

    - by user12611315
    The Direct I/O feature has been available for LDoms customers since LDoms2.0. Apart from the latest SR-IOV feature in LDoms2.2, it is worth noting a few enhancements to the Direct I/O feature. These are: Support for Metis-Q and Metis-E cards. These cards are highly requested for support and are worth mentioning because they are the only combo cards containing both FibreChannel and Ethernet in the same card. With this support, a customer can have both SAN storage and network access with just one card and one PCIe slot assigned to a logical domain. This reduces cost and helps when there are less number of slots in a given platform. The following are the part numbers for these cards. I have tried to put the platforms on which each card is supported, but this information can get quickly outdated. The accurate information can be found at the Support Document.  Card Name  Part Number  Platforms Metis-Q: StorageTek Dual 8Gb Fibre Channel Dual GbE ExpressModule HBA, QLogic SG-XPCIEFCGBE-Q8-N  SPARC T3-4, T4-4 Metis-E: StorageTek Dual 8Gb Fibre Chanel Dual GbE ExpressModule HBA, Emulex SG-XPCIEFCGBE-E8-N SPARC T3-4, T4-4  Additional cards added to the portfolio of supported cards. This is mainly Powerville based Ethernet cards, the part numbers for these cards as below:  Part Number  Description  7100477 Sun Quad Port GbE PCI Express 2.0 Low Profile Adapter, UTP  7100481 Sun Dual Port GbE PCI Express 2.0 Low Profile Adapter, MMF  7100483 Sun Quad Port GbE PCI Express 2.0 ExpressModule, UTP  7110486 Sun Quad Port GbE PCI Express 2.0 ExpressModule, MMF    Note:  Direct IO feature has a hard dependency on the Root domain(PCIe bus owner, here Primary domain). That is, rebooting the Root domain for any reason may impact the logical domains having PCIe slots assigned with Direct IO feature. So rebooting a root domain need to be carefully managed. Also apply the failure-policy settings as described in the admin guide and release notes to deal with unexpected cases.

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  • Reading from serial port with Boost Asio?

    - by trikri
    Hi! I'm going to check for incoming messages (data packages) on the serial port, using Boost Asio. Each message will start with a header that is one byte long, and will specify which type of the message has been sent. Each different type of message has an own length. The function I'm about to write should check for new incoming messages continually, and when it finds one it should read it, and then some other function should parse it. I thought that the code might look something like this: void check_for_incoming_messages() { boost::asio::streambuf response; boost::system::error_code error; std::string s1, s2; if (boost::asio::read(port, response, boost::asio::transfer_at_least(0), error)) { s1 = streambuf_to_string(response); int msg_code = s1[0]; if (msg_code < 0 || msg_code >= NUM_MESSAGES) { // Handle error, invalid message header } if (boost::asio::read(port, response, boost::asio::transfer_at_least(message_lengths[msg_code]-s1.length()), error)) { s2 = streambuf_to_string(response); // Handle the content of s1 and s2 } else if (error != boost::asio::error::eof) { throw boost::system::system_error(error); } } else if (error != boost::asio::error::eof) { throw boost::system::system_error(error); } } Is boost::asio::streambuf is the right thing to use? And how do I extract the data from it so I can parse the message? I also want to know if I need to have a separate thread which only calls this function, so that it get called more often? Isn't there a risk for loosing data in between two calls to the function otherwise, because so much data comes in that it can't be stored in the serial ports memory? I'm using Qt as a widget toolkit and I don't really know how long time it needs to process all it's events.

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  • Android 3.1+ USB as virtual COM port

    - by ZachMc
    I have a third party usb device, that when plugged into a Windows machine, is recognized as a serial device and assigned to the COM 4 port. I can communicate with the device just like I would with a device connected via a serial port. For instance, I can write "abc" serially to the device via the USB connection. I have been searching for a way to do a similar thing in Android. If I try the Usb Host method, and use a UsbManager to open the UsbDevice, I can get one interface, with 2 endpoints. I have tried sending control messages using the method in UsbDeviceConnection, but the method returns -1 for everything (though I don't know what I should use for the parameters of that method). Is there a way to get an OutputStream that I can write to that will send bytes to the USB device? Right now I am looking at recompiling the kernel to include a virtual COM port driver and write some native code to be able to do this. Thanks! Edit: I am using the FTDI serial to USB converter circuit. Is this compatible with Android?

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  • Correct initialization sequence for Linux serial port

    - by whitequark
    I wrote an application that must use serial ports on Linux, especially ttyUSB ones. Reading and writing operations are performed with standard select()/read() loop and write(), and there is probably nothing wrong in them, but initialization code (or absence of some part of it) damages something in the tty subsystem. Here it is: vuxboot(string filename, unsigned baud = B115200) : _debug(false) { _fd = open(filename.c_str(), O_RDWR | O_NOCTTY); if(!_fd) throw new io_error("cannot open port"); // Serial initialization was written with FTDI USB-to-serial converters // in mind. Anyway, who wants to use non-8n1 protocol? tcgetattr(_fd, &_termios); termios tio = {0}; tio.c_iflag = IGNPAR; tio.c_oflag = 0; tio.c_cflag = baud | CLOCAL | CREAD | CS8; tio.c_lflag = 0; tcflush(_fd, TCIFLUSH); tcsetattr(_fd, TCSANOW, &tio); } Another tcsetattr(_fd, TCSANOW, &_termios) sits in the destructor, but it is irrelevant. With or without this termios initialization, strange things happen in system after the application exits. Sometimes plain cat (or hd) exits immediately printing nothing or same stuff each time, sometimes it is waiting and not displaying any of the data that is surely sent onto the port; and close() (read() too, but not every time) emits a strange WARNING to dmesg referring to usb-serial.c. I checked the hardware and firmware tens of times (even on different machines) and I am sure it is working as intended; moreover, I stripped the firmware to just print same message over and over. How can I use serial port without destroying anything? Thanks.

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  • Thread to receive the messages from serial port is not working using c#

    - by karthik
    I am using Serial port to receive the messages. The below function is running in a thread. When i debug i find that the thread is running properly. But "if (sp.IsOpen)" is always false, due to which the code is not executing inside the IF condition at all. It says the Port is closed. I will be having multiple serial ports in my system and i will not know, which port will receive the message. So i need to listen to all the ports in one Thread. How can i solve my problem here ? private void ListenerPorts() { log.Info("Listening Thread Started"); while (true) { //foreach (SerialPort sp in storeport) foreach (SerialPort sp in comPortsList) { if (sp.IsOpen) { sp.ReadTimeout = readTimeoutInMs; sp.WriteTimeout = writeTimeoutInMs; try { string msg = sp.ReadLine(); this.GetMessageRichTextBox("Message : " + msg + "\n"); sp.WriteLine(sp.PortName); if (msg.Contains("COM")) { // is AutoScan receiverPortName = sp.ReadLine(); this.updateLblStatusRichTextBox(sp.PortName + " is connected to " + msg + "\n"); } else { //standalone is uppercase ReceiverPortName = sp.ReadLine(); this.updateLblStatusRichTextBox(sp.PortName + " is connected to " + ReceiverPortName + "\n"); } } catch (Exception ex) { // no data System.Diagnostics.Debug.WriteLine(sp.PortName + " : " + ex.Message); } } } } }

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  • CMT Blog: Virtual IO gets better for LDoms

    - by uwes
    As we all know virtual IO is of great use in the IT environments of today but when it comes to performance we often have to pay the price. In his Blog entry Improved vDisk Performance for Ldoms, Stefan Hinker explained how the new implementation of the vdisk/vds software stack in Solaris 11.1 SRU 19 (and a Solaris 10 patch sortly afterwards) significantly improves latency and throughput of the vitual disk IO.

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  • How to unit test with lots of IO

    - by Eric
    I write Linux embedded software which closely integrates with hardware. My modules are such as : -CMOS video input with kernel driver (v4l2) -Hardware h264/mpeg4 encoders (texas instuments) -Audio Capture/Playback (alsa) -Network IO I'd like to have automated testing for those functionalities, such as integration testing. I am not sure how I can automate this process since most of the top level functionalities I face are IO bound. Sure, it is easy to test functions individually, but whole process checking means depending on tons of external dependencies only available at runtime.

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  • .NET Serial Port: Port Configuration Dialog

    - by sheepsimulator
    I'm going to be writing a small app based on the .NET SerialPort class. Is there a generic dialog available for setting the port settings, ala baud rate, data bits, stop bit, parity bit, flow control, etc? I didn't see one in the MSDN documentation, but I would think that one exists, since that stuff doesn't change.

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  • COM port read - Thread remains alive after timeout occurs

    - by Sna
    Hello to all. I have a dll which includes a function called ReadPort that reads data from serial COM port, written in c/c++. This function is called within an extra thread from another WINAPI function using the _beginthreadex. When COM port has data to be read, the worker thread returns the data, ends normaly, the calling thread closes the worker's thread handle and the dll works fine. However, if ReadPort is called without data pending on the COM port, when timeout occurs then WaitForSingleObject returns WAIT_TIMEOUT but the worker thread never ends. As a result, virtual memory grows at about 1 MB every time, physical memory grows some KBs and the application that calls the dll becomes unstable. I also tryied to use TerminateThread() but i got the same results. I have to admit that although i have enough developing experience, i am not familiar with c/c++. I did a lot of research before posting but unfortunately i didn't manage to solve my problem. Does anyone have a clue on how could i solve this problem? However, I really want to stick to this kind of solution. Also, i want to mention that i think i can't use any global variables to use some kind of extra events, because each dll's functions may be called many times for every COM port. I post some parts of my code below: The Worker Thread: unsigned int __stdcall ReadPort(void* readstr){ DWORD dwError; int rres;DWORD dwCommModemStatus, dwBytesTransferred; int ret; char szBuff[64] = ""; ReadParams* params = (ReadParams*)readstr; ret = SetCommMask(params->param2, EV_RXCHAR | EV_CTS | EV_DSR | EV_RLSD | EV_RING); if (ret == 0) { _endthreadex(0); return -1; } ret = WaitCommEvent(params->param2, &dwCommModemStatus, 0); if (ret == 0) { _endthreadex(0); return -2; } ret = SetCommMask(params->param2, EV_RXCHAR | EV_CTS | EV_DSR | EV_RLSD| EV_RING); if (ret == 0) { _endthreadex(0); return -3; } if (dwCommModemStatus & EV_RXCHAR||dwCommModemStatus & EV_RLSD) { rres = ReadFile(params->param2, szBuff, 64, &dwBytesTransferred,NULL); if (rres == 0) { switch (dwError = GetLastError()) { case ERROR_HANDLE_EOF: _endthreadex(0); return -4; } _endthreadex(0); return -5; } else { strcpy(params->param1,szBuff); _endthreadex(0); return 0; } } else { _endthreadex(0); return 0; } _endthreadex(0); return 0;} The Calling Thread: int WINAPI StartReadThread(HANDLE porthandle, HWND windowhandle){ HANDLE hThread; unsigned threadID; ReadParams readstr; DWORD ret, ret2; readstr.param2 = porthandle; hThread = (HANDLE)_beginthreadex( NULL, 0, ReadPort, &readstr, 0, &threadID ); ret = WaitForSingleObject(hThread, 500); if (ret == WAIT_OBJECT_0) { CloseHandle(hThread); if (readstr.param1 != NULL) // Send message to GUI return 0; } else if (ret == WAIT_TIMEOUT) { ret2 = CloseHandle(hThread); return -1; } else { ret2 = CloseHandle(hThread); if (ret2 == 0) return -2; }} Thank you in advance, Sna.

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  • TAB completion not working in ubuntu hardy heron

    - by Tutul
    I have recently installed ubuntu hardy and found that shell command completion with TAB doesn't work, the package 'bash-completion' is installed in my system. I guess it is related to dash being the default shell? Is there a way to use tab completion in dash? If there isn't a way then how can i change my default shell to bash?

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  • How is incoming SMTP mail being delivered despite blocked port

    - by Josh
    I setup a MX mail server, everything works despite port 25 being blocked, I'm stumped as to why I am able to receive email with this setup, and what the consequences might be if I leave it this way. Here are the details: Connections to SMTP over port 25 and 587 both reliably connect over my local network. Connections to SMTP over port 25 are blocked from external IPs (the ISP is blocking the port). Connections to Submission SMTP over port 587 from external IPs are reliable. Emails sent from gmail, yahoo, and a few other addresses all are being delivered. I haven't found an email provider that fails to deliver mail to my MX. So, with port 25 blocked, I am assuming other MTA servers fallback to port 587, otherwise I can't imagine how the mail is received. I know port 25 shouldn't be blocked, but so far it works. Are there mail servers that this will not work with? Where can I find more about how this is working? -- edit More technical detail, to validate that I'm not missing something silly. Obviously in the transcript below I've replaced my actual domain with example.com. # DNS MX record points to the A record. $ dig example.com MX +short 1 example.com $ dig example.com A +short <Public IP address> # From a public server (not my ISP hosting the mail server) # We see port 25 is blocked, but port 587 is open $ telnet example.com 25 Trying <public ip>... telnet: Unable to connect to remote host: Connection refused # Let's try openssl $ openssl s_client -starttls smtp -crlf -connect example.com:25 connect: Connection refused connect:errno=111 # Again from a public server, we see port 587 is open $ telnet example.com 587 Trying <public ip>... Connected to example.com. Escape character is '^]'. 220 example.com ESMTP Postfix ehlo example.com 250-example.com 250-PIPELINING 250-SIZE 10485760 250-VRFY 250-ETRN 250-STARTTLS 250-ENHANCEDSTATUSCODES 250-8BITMIME 250-DSN 250-BINARYMIME 250 CHUNKING quit 221 2.0.0 Bye Connection closed by foreign host. Here is a portion from the mail log when receiving a message from gmail: postfix/postscreen[93152]: CONNECT from [209.85.128.49]:48953 to [192.168.0.10]:25 postfix/postscreen[93152]: PASS NEW [209.85.128.49]:48953 postfix/smtpd[93160]: connect from mail-qe0-f49.google.com[209.85.128.49] postfix/smtpd[93160]: 7A8C31C1AA99: client=mail-qe0-f49.google.com[209.85.128.49] The log shows that a connection was made to the local IP on port 25 (I'm not doing any port mapping, so it is port 25 on the public IP too). Seeing this leads me to hypothesize that the ISP block on port 25 only occurs when a connection is made from an IP address that is not known to be a mail server. Any other theories?

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  • How to do port forwarding in D-link Glb802c?

    - by Manish
    I have some questions about port forwarding on my D-Link Router GLB-802C. For example: My local machine's IP is 117.1.1.81 My router's IP is 117.1.1.1 My Public (Web) IP is 117.16.1.1 My questions are: What will be my Global Address 'To'? What will be my Global Address 'From'? In Destination Port "From" and "To" what do I select in the drop down list and port no for forwarding HTTP traffic (for my website)? In Local Port, what do I select in drop down list and port no?

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  • How to do port forwarding in D-link Glb802c?

    - by Manish
    I have some questions about port forwarding on my D-Link Router GLB-802C. For example: My local machine's IP is 117.1.1.81 My router's IP is 117.1.1.1 My Public (Web) IP is 117.16.1.1 My questions are: What will be my Global Address 'To'? What will be my Global Address 'From'? In Destination Port "From" and "To" what do I select in the drop down list and port no for forwarding HTTP traffic (for my website)? In Local Port, what do I select in drop down list and port no?

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  • What's the best way to forward traffic on a specific port to another machine?

    - by Ankit
    The setup I have is this: [client01] <-A-> [server01] <-B-> [server02] client01 can access port 9300 on server01 (connection A). server01 can access port 9300 on server02 (connection B). What's the best way to make all traffic on port 9300 to server01 go to port 9300 on server02? I can successfully do this with an ssh tunnel from client01 to server01 to server02, but I don't want to have to run ssh on client01. When I ssh from server01 to server02 forwarding port 9300 (ssh -g -L9300:localhost:9300 server02 on server01), it doesn't work -- am I using the wrong command?

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  • threaded serial port IOException when writing

    - by John McDonald
    Hi, I'm trying to write a small application that simply reads data from a socket, extracts some information (two integers) from the data and sends the extracted information off on a serial port. The idea is that it should start and just keep going. In short, it works, but not for long. After a consistently short period I start to receive IOExceptions and socket receive buffer is swamped. The thread framework has been taken from the MSDN serial port example. The delay in send(), readThread.Join(), is an effort to delay read() in order to allow serial port interrupt processing a chance to occur, but I think I've misinterpreted the join function. I either need to sync the processes more effectively or throw some data away as it comes in off the socket, which would be fine. The integer data is controlling a pan tilt unit and I'm sure four times a second would be acceptable, but not sure on how to best acheive either, any ideas would be greatly appreciated, cheers. using System; using System.Collections.Generic; using System.Text; using System.IO.Ports; using System.Threading; using System.Net; using System.Net.Sockets; using System.IO; namespace ConsoleApplication1 { class Program { static bool _continue; static SerialPort _serialPort; static Thread readThread; static Thread sendThread; static String sendString; static Socket s; static int byteCount; static Byte[] bytesReceived; // synchronise send and receive threads static bool dataReceived; const int FIONREAD = 0x4004667F; static void Main(string[] args) { dataReceived = false; readThread = new Thread(Read); sendThread = new Thread(Send); bytesReceived = new Byte[16384]; // Create a new SerialPort object with default settings. _serialPort = new SerialPort("COM4", 38400, Parity.None, 8, StopBits.One); // Set the read/write timeouts _serialPort.WriteTimeout = 500; _serialPort.Open(); string moveMode = "CV "; _serialPort.WriteLine(moveMode); s = null; IPHostEntry hostEntry = Dns.GetHostEntry("localhost"); foreach (IPAddress address in hostEntry.AddressList) { IPEndPoint ipe = new IPEndPoint(address, 10001); Socket tempSocket = new Socket(ipe.AddressFamily, SocketType.Stream, ProtocolType.Tcp); tempSocket.Connect(ipe); if (tempSocket.Connected) { s = tempSocket; s.ReceiveBufferSize = 16384; break; } else { continue; } } readThread.Start(); sendThread.Start(); while (_continue) { Thread.Sleep(10); ;// Console.WriteLine("main..."); } readThread.Join(); _serialPort.Close(); s.Close(); } public static void Read() { while (_continue) { try { //Console.WriteLine("Read"); if (!dataReceived) { byte[] outValue = BitConverter.GetBytes(0); // Check how many bytes have been received. s.IOControl(FIONREAD, null, outValue); uint bytesAvailable = BitConverter.ToUInt32(outValue, 0); if (bytesAvailable > 0) { Console.WriteLine("Read thread..." + bytesAvailable); byteCount = s.Receive(bytesReceived); string str = Encoding.ASCII.GetString(bytesReceived); //str = Encoding::UTF8->GetString( bytesReceived ); string[] split = str.Split(new Char[] { '\t', '\r', '\n' }); string filteredX = (split.GetValue(7)).ToString(); string filteredY = (split.GetValue(8)).ToString(); string[] AzSplit = filteredX.Split(new Char[] { '.' }); filteredX = (AzSplit.GetValue(0)).ToString(); string[] ElSplit = filteredY.Split(new Char[] { '.' }); filteredY = (ElSplit.GetValue(0)).ToString(); // scale values int x = (int)(Convert.ToInt32(filteredX) * 1.9); string scaledAz = x.ToString(); int y = (int)(Convert.ToInt32(filteredY) * 1.9); string scaledEl = y.ToString(); String moveAz = "PS" + scaledAz + " "; String moveEl = "TS" + scaledEl + " "; sendString = moveAz + moveEl; dataReceived = true; } } } catch (TimeoutException) {Console.WriteLine("timeout exception");} catch (NullReferenceException) {Console.WriteLine("Read NULL reference exception");} } } public static void Send() { while (_continue) { try { if (dataReceived) { // sleep Read() thread to allow serial port interrupt processing readThread.Join(100); // send command to PTU dataReceived = false; Console.WriteLine(sendString); _serialPort.WriteLine(sendString); } } catch (TimeoutException) { Console.WriteLine("Timeout exception"); } catch (IOException) { Console.WriteLine("IOException exception"); } catch (NullReferenceException) { Console.WriteLine("Send NULL reference exception"); } } } } }

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  • Difference between PORT and LATCH on PIC 18F

    - by acemtp
    I already read the datasheet and google but I still don't understand something. In my case, I set PIN RC6 of a PIC18F26K20 in INPUT mode: TRISCbits.TRISC6 = 1; Then I read the value with PORT and LATCH and I have different value! v1 = LATCbits.LATC6; v2 = PORTCbits.RC6; v1 gives me 0 where v2 gives 1. Is it normal? In which case we have to use PORT and in which case LATCH?

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  • Receiving messages part by part from serial port using c#

    - by karthik
    I am using the below code to receive the messages from serial port using c# void comPort_DataReceived(object sender, SerialDataReceivedEventArgs e) { if (comPort.IsOpen == true) { string msg = comPort.ReadExisting(); MessageBox.Show(msg.Trim()); } } The problem is, i am getting the messages part by part. Like, if u send "Hello, How are you" I am receiving it word by word. I want that in a single stretch. How can i do ?? Also, is it possible to retrieve the port name from which the application is sending and receiving messages ?

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  • Serial port determinism

    - by Matt Green
    This seems like a simple question, but it is difficult to search for. I need to interface with a device over the serial port. In the event my program (or another) does not finish writing a command to the device, how do I ensure the next run of the program can successfully send a command? Example: The foo program runs and begins writing "A_VERY_LONG_COMMAND" The user terminates the program, but the program has only written, "A_VERY" The user runs the program again, and the command is resent. Except, the device sees "A_VERYA_VERY_LONG_COMMAND," which isn't what we want. Is there any way to make this more deterministic? Serial port programming feels very out-of-control due to issues like this.

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