Hello,
I am new in C# and I am trying to develop C# application for my relative humidity and temperature monitoring with SHT-11.
I found tutorials on net and I managed to make serial connection and to receive string. Now I would like to parse received string and to extract humidity and temperature values. I made following protocol
START byte ('*') + 5 bytes rel. hum + SEPARATOR (':') + 5 bytes temperature + STOP byte (';')
I know how to parse string in C for microcontrollers but I am not sure how to do that in C# (Microsoft Visual 2013).
Here is my code
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace RH_and_Temperaure_Monitoring
{
public partial class Form1 : Form
{
string RxString;
public Form1()
{
InitializeComponent();
}
private void buttonstart_Click(object sender, EventArgs e)
{
serialPort1.PortName = "COM12";
serialPort1.BaudRate = 9600;
serialPort1.Open();
if (serialPort1.IsOpen)
{
buttonstart.Enabled = false;
buttonstop.Enabled = true;
textBox1.ReadOnly = false;
}
}
private void buttonstop_Click(object sender, EventArgs e)
{
if (serialPort1.IsOpen)
{
serialPort1.Close();
buttonstart.Enabled = true;
buttonstop.Enabled = false;
textBox1.ReadOnly = true;
}
}
private void textBox1_KeyPress(object sender, KeyPressEventArgs e)
{
// If the port is closed, don't try to send a character.
if(!serialPort1.IsOpen) return;
// If the port is Open, declare a char[] array with one element.
char[] buff = new char[1];
// Load element 0 with the key character.
buff[0] = e.KeyChar;
// Send the one character buffer.
serialPort1.Write(buff, 0, 1);
// Set the KeyPress event as handled so the character won't
// display locally. If you want it to display, omit the next line.
e.Handled = true;
}
private void DisplayText(object sender, EventArgs e)
{
textBox1.AppendText(RxString);
}
private void serialPort1_DataReceived(object sender, System.IO.Ports.SerialDataReceivedEventArgs e)
{
RxString = serialPort1.ReadExisting();
this.Invoke(new EventHandler(DisplayText));
}
private void Form1_FormClosing(object sender, FormClosingEventArgs e)
{
if (serialPort1.IsOpen) serialPort1.Close();
}
}
}
And screenshot of Windows Form..
http://obrazki.elekt..._1406711404.jpg Later I would like to add plots and presentation of measured values in separated text boxes for temperature and humidity.
Thanks.