In my project i have a serialport control and a button, there is no error but i want to know how actually this works, i want to send and recieve the data from the serial port don't know how to do it..
i have problem i make code that take data from serial com port for weighting machine it is ok working but it recieve data in more lines.I try to make it receive data in one line In code below i need to take weight fro weight bridge machine automatically by timer in visual studio 2005.it works but receive weight values in more lines. I need to receive weight in one line and automatically updated then convert t to integer
I am doing a messaging application using Visual C++ window form application.
Sometimes I can't receive a whole message from the sender. If i type short sentence like "123456", it can be shown properly. But, if i type a quite long sentence like "123456789123456789", it can't shown a correct message, can't show exactly the whole message.
here is my code:
//transmission: String^ message; String^ message1; String^ name = this->serialPort1->PortName;
I am using libserial library to communicate through the serial port in c++. the linux cpu is communicating with a modem through the serial port. basically this is what i want to do
Code: //I want: cpu to write command_1 to modem Wait for the answer from modem read serial port check if command successful (i.e modem sends OK if successful and ERROR if there is an error)
If there is an error, resend command_1
if successful then Write command_2 to modem Wait for answer read again serial port check if command is succesful (modem again sends OK if successful and ERROR if there is an error) basically, this is the code...
Code: serial_port <<command_1 <<' '; //send 1st command sleep(2); //delay a while
I have a Voltage Range from -10V up to +10V, which I transform to a voltage Range 0V to 5V, with the schematic i've attached, so I can use the A/D converter of my ATMEGA32 processor.
Now I'd like to write the value of the Input Voltage (which moves in the Range of -10V to + 10V) on the serial port, but i don't know how i should calculate this factor. At the moment, I can only write the value of the A/D Converter Input on the serial, but this is only 0V to 5V...
Explain me a working code to read and write a file using serial communication.and i need to store that file.I know normal file handling in C, but how it is through serial port i am not getting.
I want to read and write value on serail port to Microcontroller with MFC. The MFC have no serial port tool like in VB Professionnal edition. I try to find MFC connect serial port example but I not found. If you have good example for read and write on serial port with MFC
I am making a MFC application with VC++2012 with receiving data from Serial Port and the data is stored in a Listbox, then after processing (convert into numbers) and get these data to draw a sine wave on the chart. (I intend to make a virtual oscilloscope).
Everything works ok at the beginning, but after receiving about 300 items or above (in the Listbox) the value seem stucking (or lagging) and work very slowly.
I receive data by the SerialPort_DataReceived() method, and process of converting and drawing chart also in this method, I think this makes the system overload!!
I would like to handle the response such that if the response is OK, the modem sends another command and if the response is ERROR, the modem resends the first command.
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using System.IO; using System.IO.Ports;
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How to pick date / time when serial port starts reading , and also when reading stops ?
I have a class which I wrote and one of its object is "SerialPort" .NET class. In my MainWindow I created instance of my class called "SerialPortComm", then I send through some functions of mine, commands to the Serial Port, and I receive answers through "DataReceived" event.
But when I trying to use Dispatcher.BeginInvoke to write my data I have received (successfully), nothing shows on the RichTextBox which I'm trying to write to.
What can caused that, and How I can make it works?
SerialPortComm.cs
public partial class SerialPortComm : UserControl { public SerialPort mySerialPort = new SerialPort(); public void Open_Port(string comNumber, int baudRate) { mySerialPort.PortName = comNumber; mySerialPort.BaudRate = baudRate;
Im trying to convert a base 64 string to an image and store in a gridview control (windows 8)
instead of an image im seeing text in the control Windows.UI.Xaml.MediaImaging.Bitmap
convert base 64 string to bitmap
public async Task<BitmapImage> Base64ToImage(string base64) { var bitmap = new BitmapImage(); var buffer = Convert.FromBase64String(base64); using (var stream = new Windows.Storage.Streams.InMemoryRandomAccessStream()) {
btnStatusPlr1.Image SHOULD come back as True.Then I realized it might not be the same as setting the buttons image in the properties (Which is what i did to get the original image (the one being compared to))
I do have a feeling ive done something wrong here (Yes im a noob /> )
Variable active, is the same image as the buttons default (Well should be)
I'm trying to get a UDP server working and just can't seem to get it to read in any UDP packets. I can see the packet coming in on the correct interface and port from tcpdump, but my program never logs that it got the data.
I just keep getting a log showing that my recvfrom timed out. I'm pretty sure I'm setting everything up correctly.
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Net; using System.Net.Sockets; using System.Threading; namespace test {
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I don't know if this is a bug in Winsock or the .NET Framework but i need to fix this or workaround. Recently I was working on a networking class and this error is breaking everything.
If you add Thread.Sleep(1) after Send() call then "TCP Bug detected" doesnt get executed but its not a reliable fix.
I'm trying to understand winsock with c++. Let's assume I have a 2 working applications, one is the client and one the server:
Client: I can enter a command, for example chat or filetransfer, it will then switch into this specific mode where I can enter commands like uploading a file, send a message etc.
Client Code: .... while (rc != SOCKET_ERROR) { printf(" #"); gets(buf); if (strcmp(buf, "CHAT") == 0){ // start chat mode
[Code] .....
I'm in a recv/send loop and I'm using streams...so basically all the data is being sent/received there. Now, if I want to upload a file, I send a FILETRANSFER String to the server. Then I will probably need another loop that receives file requests from the client. The server will need more details about the file, like the path, name, size...
Now, my question is, what's the best practise for something like that? I'm having problems understand how I can send 3 different values from the server to the client and how he will receive them in the right order store them in variables. And also, after sending something to the server, in some cases, the client will have to wait for the server to answer.
All done! Do some stuff now. So what I want to try is get 3 things in this response and put them to string vector but how to do this. What I need is to parse the response and the 200 OK, 28 and All done! Do some stuff now. then put them to string vector.
expected result
response[0] = 200 OK; response[1] = 28 response[2] = All done! Do some stuff now
I made a program that is suppose to receive 20 numbers or less and find the average, then show all numbers entered but my average does not show. It shows as 0 and a line pops up after every number returned. I am stuck and dont know how to fix the logical errors.
#include <iostream> #include <cmath> using namespace std; int main() { float num[20]; int amount_num;
I need to write an interface program in C++ to receive occasional data being sent to me from a different company from across the internet. The company says they will send the data using POST. They have given me a document that lists their data specific parameters and their meaning.
question regarding some segmentation fault I receive while running the code I have been working on. I am working on a card program and this is my input:
What I am trying to do is read in 52 cards name into array, set up the game and play it, when the game is done, I read the next 52 cards and play it again.
However, I encounter segmentation fault while running the program. Here is my code
