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 ?
How to show only current date not time in webforms in visual studio as for date and time code is
Label1.Text = DateTime.Now.ToString();
What for only date not time
The first time my application opens up, it should get the local date out of the System and store this in a registry key. But the second time it should get the date stored in that registryKey and compare it to the date right now.And there is where I am stuck, I just don't know how to get the date out of that key and compare it to the date right now.
This is my code:
RegistryKey key1;
private void btnTrial_Click(object sender, EventArgs e) {
DateTime current = DateTime.Now;
key1 = Registry.CurrentUser.OpenSubKey("myKey");
if (key1 == null)
[code]....
at the last "if" statement it should compare the date stored in the key with the DateTime.Now.
i want to create an application which generates popup alerts at the day of event occurs as well as a day before the event will occur in a specific time interval as well.. events are stored in database and they are all date time fields .. so i want to link those fields to create popups ..
View 2 Replies View RelatedI am trying to convert decimal value 1 to 32 to hex value and insert it at 4th pos of char array and send it as hex value at the serial port .
My issue is it is converting to decimal to hex value but when it sends, it treat the converted hex value as char and sends it equivalent hex value.
For example
if decimal =1 then its hex = 1.
so , writebuffer[3] =1
But when we send whole writebuffer through send function, it treat this 1 as char and sends its hex value as 31. how to send its hex value.
unsigned int i=0;
char hex[3];
unsigned char hexunsigned[3];
unsigned int dec;
do {
unsigned char writebuffer[8] ={0x01, 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
[Code] ....
The send function is
void serial::send(unsigned char data[], DWORD noOfByte) {
DWORD dwBytesWrite;
WriteFile(serialHandle, data, noOfByte, &dwBytesWrite, NULL);
}
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
[Code].....
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.
View 1 Replies View RelatedI am trying to write data in Russian language to the serial (RS-232) port. My display device is already set to that character code page.
But output on the device is not exactly what I require.
My code snippet is like this below
CString pBuffer = L"английский"; //Russian Language
LPBYTE pByte = new BYTE[pBuffer.GetLength() + 1];
memcpy(pByte, (VOID*)LPCTSTR(pBuffer), pBuffer.GetLength());
long nBuffer=pBuffer.GetLength()+1;
DWORD dwWritten=0;
WriteFile(pHandle , pByte, nBuffer ,&dwWritten , NULL);
pHandle is a valid handle.
i want to read the string plus image from serialport.
sample output:
DENOMI Ver SERIAL NUMBER
100 V <<<<IMAGE>>>>
100 N <<<<IMAGE>>>>
but when im trying to receive the data and using serialPort.ReadExisting();
this is the output:
DENOMI Ver SERIAL NUMBER
100 V *!???????q?? q??y??y? y? q? ????????xxxxppppp ????y?py?`q??q??q? q??????? ? ???????8?p8?@8??8?????? ?? ?????8??8?p8?p?p??p??p?????????q?q? p8 p88?p8?????? ??? ????8?p8?p8?p8?p8??8??x??x8?8 ?8 ?? p? p??p??p0?py?p????????~8?q??q??q??p8?????p????? ????? ????? ??? ????????????p8 ?x ?x<?x<?x<??<??? ??
private void button1_Click(object sender, EventArgs e) {
serialPort1.PortName = "COM1";
serialPort1.BaudRate = 9600;
serialPort1.DataBits = 8;
serialPort1.Parity = Parity.None;
serialPort1.StopBits = StopBits.One;
[Code]...
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..
How can i read barcode scanner value from serial port?
View 5 Replies View RelatedI 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;
[Code].....
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
View 2 Replies View Relatedi 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
void Application_Idle(object sender, EventArgs e)
{
label3.Text = serialPort1.IsOpen ? "[Open]" : "[Closed]";
}
[Code].....
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 need to send a packet of type byte:
0x00, 0x01, 0x02, 0x11, 0x00, 0x00
to a device via the serial port and then I receive and store data coming from device like this:
0x01, 0x01, 0x01 , 0x00, 0x00, 0x00, 0x01, 0x00, 0x04, 0x01, 0x00.
Writing lines of code through which:
1) I create the array
2) the sending the array to serial port
3) I'll see what I'm sending
4) I get the data
I'm using Visual Studio 2010 and C + + or VC++ language.
I am using libserial library to interact with a modem using c++. The C++ code sends an AT command:
Code:
my_serial_stream << "AT+CSQ" << '
' ;
The modem responds with a response, either ERROR or OK, The c++ code to read the response:
Code:
while( serial_port.rdbuf()->in_avail() > 0 )
{
char next_byte;
serial_port.get(next_byte);
std::cerr << std::hex << (int)next_byte << " ";
}
std::cerr << std::endl;
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.
I am writing a code using Visual C++ to access serial port.
Code:
HANDLE hSerial= CreateFile(L"COM1", GENERIC_READ | GENERIC_WRITE,0,0,OPEN_EXISTING,FILE_ATTRIBUTE_NORMAL,0);
DCB dcb = {0};
dcb.DCBlength=sizeof(dcbSerialParams);
dcb.BaudRate=CBR_1200;
dcb.ByteSize=8;
dcb.StopBits=ONESTOPBIT;
dcb.Parity=NOPARITY;
I am getting error in all last five lines in above code at dcb. and error is give below:-
Error: this declaration has no storage class or type specifier
I want to know if there is a function or library that starts counting time when the program starts. Because I'm making a program that is dependent on time.
Pseudo code
time starts
if ( seconds % 2 == 0 ) {
counter++;
}
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;
[Code] ....
This is what I have:
#include <ctime>
#include <string>
using namespace std;
void date_and_time(string &date, string &time){
time_t current_time;
[Code] ......
Is there a way to make sure that the strings would not contain trailing spaces?
I am trying to make a project using arduino to control several power surces by time, i don't want to have an lcd, that would be easyer but i don't have enought space on my project, i want to set the time and the timing for the relays via Serial
Of curse i could set it using the serial monitor on the arduino ide, but i want to make a simple program to make the pc comunicate with the arduino and make it simpler to set the time and similar stuff. How to use one of my usb ports to print and read serial data?
how to use this function:
ftStatus = myFtdiDevice.Read(readData, numBytesAvailable,ref numBytesRead);
to read byte from the serial port.This function is part of the DLL that came with the chip(FT2232D) I am using on my board.I want to use the function to read a byte from the serial port and then send the value to the Graphic user interface.Unfortunately I was unable to get the expected value on my GUI.If I send for instance 40,what I get on the GUI are letters instead of the number 40 or at times the GUI will not even respond.Below are my lines of code I used to read the byte from the serial port:
The following instructions are executed whenever the CHECKBOX is checked
private
void checkBox1_CheckedChanged(object sender, EventArgs e)
{
UInt32 numBytesRead = 0;
[Code].....
How to get system Date and Time and display it in the format DD/MM/YYYY ??
View 2 Replies View RelatedI am doing a school project. The project basically is that it records the in and out time of an employee(of an particular company).The employee while checking in or out should enter a unique key generated specially for him so that no one else can check in and out for him.Then referring to the employees position( A worker or a manager or something like that) his total working time each day , for a week and a month is calculated. The company starts at 8 am and ends at 5 pm for 1st shift and for second shift from 3.30 pm to 2.30 am. Plus Saturday and Sunday off. Then after a month the program refers to the working time date stored in a file and calculates his pay(For workers its per hour salary and for managers it aint).
If an employee is consistently late the details are forwarded to the HR account( so that necessary steps are taken).This will support the company log the details of their employees duty time plus give enough detail to take action if someones always late. I'm doing this as a school project and it needn't be of enterprise class and all.. But i want the coding to perform as it should. Also i'm forced to use the old Turbo C++. Now i'm struck in the place where the time of the employees in and out time is logged. This coding does the work
Code:
void main( ) {
clrscr();
char dateStr [9],timeStr [9];
_strdate( dateStr);
cout<<" The current date is "<<dateStr<<'
[Code] ....
I think the second one is better as it not only gives me date but also gives me the day so i can check easily for the weekends. So, how these time functions work.
