C Sharp :: Receiving Data Using Bluetooth Dongle (BLED 112)
May 30, 2013
I am doing a project where i need to develop a C# windows application. I need to receive data in my laptop (windows 7) using BLED 112 Dongle from NRF 8001 which is Bluetooth Low Power. Actually NRF 8001 is connected to a sensor and it is streaming the sensor's data. I need to receive those data using Dongle and save those data.
I tried doing this by using the library provided by 32feet.net but using this i could only discover the device but wasn't able to connect my Dongle to NRF 8001. So i couldn't proceed further and i am stuck since couple of weeks already ....
I already tried searching in the internet but didn't find much info however i recently i got a API for my Dongle in this link
[URL] .....
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I want to get or view the SIM card number from the dongle (the dongle will b already connected to the computer where the SIM card will be inserted into it) but the coding should be done by C programming / Language.
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Nov 13, 2014
I want to receive an information from a file. For instance, you created a file name "sample.txt" via fstream and stored a bunch of people's name, address, phone number in that "sample.txt".
Now, I want to see what's stored in this file. Suppose, I wanted some particular guys address, phone number by just typing is his/her name.
How to relate the name with address and phone number of particular people? I just started the file creating so I wanted to know about it.
#include<iostream>
#include<conio.h>
#include<fstream>
#include<string>
using namespace std;
int main() {
ofstream outputData;
[code].....
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Sep 2, 2013
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Code:
int talk_with_server(int fd) {
printf("Test.
");
char buf[LEN];
int n = read(fd, buf, LEN);
[Code]....
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Jul 22, 2012
I have a simple UDP client that should be able to send and receive packets. It does its job, however if there are no packets received for a while it stops listening for any new packets and I'm not sure what's causing it.
This is my code:
#define WIN32_LEAN_AND_MEAN
#include "Client.h"
#include <winsock2.h>
#include <ws2tcpip.h>
#include <vector>
#include <sstream>
#pragma comment(lib, "Ws2_32.lib")
[Code] ....
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Apr 4, 2012
I am trying to code a C program for sending a struct over TCP Socket in Linux! The code is as follows:
/*
** sravan_server.c - a stream socket (TCP) server Program
*/
#include <stdio.h>
#include<stdlib.h>
#include<unistd.h>
#include<errno.h>
#include<string.h>
[Code] ....
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Jun 24, 2013
My program works primarily by receiving user input however; using 'char' and 'fgets' i have to stipulate how many characters i want assigned, and this isn't practical for what I am after. Example below.
Code:
char example[50];
printf("What colour is the sky?
");
fgets(example, 50, stdin); Is it possible that the assigned number (in this case '50') is determined strictly by the user input?
for example, user input is Blue then 50 is then 5?
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Dec 17, 2014
I want to calculate the total some of delay pf receiving Side Packet . Code is as Follow ..
What is weird that even if i invoke a sleep of 2 sec ,than its show delay always zero. Delay will be in microsec ..Is there any problem with logic or anything else..
Code:
do
{#pragma omp parallel private(nthreads, tid) {
/* Obtain thread number */
tid = omp_get_thread_num();
if (tid == 0) {
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[Code]...
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Sep 25, 2013
I'm trying to build an array of a certain size, after receiving user input. The method I'm trying is
int var = 3;
int* ar = new int[var];
When doing tests I did this (and it worked) and red flags popped off in my head.
int var = 3;
int* ar = new int[var];
ar[0] = 0;
ar[1] = 1;
ar[2] = 2;
ar[3] = 3;
ar[4] = 4;
cout << ar[0] << ar[1] << ar[2] << ar[3] << ar[4] << endl;
This method is considered safe, and possibly tell me why I'm not getting stack errors when trying to overload the array?
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Oct 11, 2013
I'm trying to write a program that passes Windows messages back and forth from another program that controls a laboratory instrument. I was able to write a program that successfully passes instructions, as evidenced by the instrument doing what I tell it. However, I am having trouble getting a return status from the instrument. The manual instructs the following:
// demo code, etc.
// send message to the instrument operating software here...
SendMessage(hwnd, WM_COPYDATA, tag, (LPARAM) &cd)
Either a completion message or return data is returned. Remote commands ReturnStatus, ReturnTiming, and ReturnData return data. In either case, data is received through an asynchronous windows message inside Win32 COPYDATASTRUCT type data packet.For example, a typical OnCopyData window callback is shown below, where the string data retrieved is finally stored into a Microsoft CString object. Note the use of variable replyTag, discussed above, which is used to isolate the correct windows message returned.
BOOL CUserDlg::OnCopyData(CWnd* pWnd, COPYDATASTRUCT* cd) {
….
if (cd->dwData == replyTag) {
/* String pointing to status */
CString retStatus = (char*) cd->lpData;
}
….
}
I can't tell if my problem is in generating the replyTag, getting the HWND to my own console window, or the actual receiving part of the code.
When setting the replyTag, the manual instructs: UINT replyTag = RegisterWindowMessage(“SOFTMaxProReplyMsg”);. However, I have to put an "L" in front of the string or I get a data type error (can't convert const char* to LPCWSTR).
When setting a HWND for myself, the manual instructs: HWND MyWnd = GetSafeHwnd().
That produces an error because GetSafeHwnd is a function of the Cwnd class, and I don't have a Cwnd. I have replaced it with HWND MyWnd = GetConsoleWindow();
When listening for the reply message, the manual instructs what I quoted above. However, I again don't have a Cwnd. I therefore simply used
if (cd.dwData == replyTag) {
CString retStatus = (char*) cd.lpData;
}
The above if statement always evaluates false, and the cd.lpdata contains the message that I had sent out instead of a reply message. How to get a reply using my console application. Here is the full code of my function:
Code:
#include "stdafx.h"
#include<iostream>
#include<vector>
#include<string>
#include<afxwin.h>
using namespace std;
void SendCommand(string command) {
// Get tags to identify the receiving and sending messages
[code]....
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Oct 2, 2014
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1. click on buttonX. (result ok, OnBnClicked message is sent)
2. click on on any place of the application, but not on the dialog.(removing focus from dialog)
3. click again on buttonX (FAILED, OnBnClicked message is NOT sent). but if instead I click on any other button in the dialog (result ok, OnBnClicked message is sent).
And when I do:
1. ...
2. ...
3. click on the dialog area just to set focus on the dialog again
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**I need to do step 3 only if I want to click again on the buttonX! why?? I think it related to SetFocus() but I m not sure how.
I've tried different style like, tool windows, overlapped, popup. it happens in all the cases.
Code:
class CToolsDlg : public CBDialog {
DECLARE_DYNAMIC(CToolsDlg)
public:
CToolsDlg(CWnd* pParent = NULL); // standard constructor
virtual ~CToolsDlg();
CToolTipCtrl m_ToolsTips;
[Code] .....
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Below is the print grid view code in c# for WINDOWS APPLICATION.
private void btnPrint_Click(object sender, EventArgs e)
{
if (printDialog1.ShowDialog() == DialogResult.OK)
{
[Code]....
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[code].....
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Feb 12, 2014
using System;
using System.Collections.Generic;
using System.ComponentModel;
[Code]....
find the attachment.
Data is displaying in grid view but when i enter the particulars it's not inserting in to DB & grid view.
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da = new SqlDataAdapter("SELECT * FROM [user]", con);
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da.Fill(ds);
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[Code] ....
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Jan 31, 2013
I want to display my data in rich-text box in the tree like structure,i fetch the data from the data base MSACCESS & i want to print it on my rich-textbox, what can i do ?
exampale is :-A
|
|__A1
| |_A1_1
| |_A1_2
|__A2
|__A3
|_A3_1
|_A3_2
like this in rich textbox
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[Code]...
data type mismatch in criteria expression
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try
{
if (textBox1.Text == "")
{
[Code].....
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