85 lines
2.0 KiB
C#
85 lines
2.0 KiB
C#
using System.IO.Ports;
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using System;
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using System.Collections.Generic;
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using System.Threading;
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using System.Diagnostics;
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namespace Tidstagning
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{
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class Relay
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{
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SerialPort com;
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Timer cooldownTimer;
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public Relay(string ComPort = null)
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{
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com = new SerialPort();
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com.PortName = ComPort;
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com.BaudRate = 9600;
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try
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{
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com.Open();
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}
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catch
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{
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}
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}
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private void On()
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{
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Set(0x00, 0x01);
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}
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private void Off()
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{
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Set(0x00, 0x00);
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}
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/**
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* Sound the horn for a given time
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* Uses a thread to postpone the off call.
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*/
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public void Sound(int time)
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{
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Debug.WriteLine("Requesting horn for: " + time.ToString() + "ms");
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On();
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cooldownTimer = new System.Threading.Timer(x =>
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{
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Debug.WriteLine("Delayed off");
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Off();
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}, null, new TimeSpan(0, 0, time / 1000), new System.TimeSpan(0));
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}
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private void Set(int output, byte state) {
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byte[] command = {0xff, 0x01, state};
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if (com.IsOpen)
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{
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Debug.WriteLine("COM: " + com.PortName + " Write: 0x" + Convert.ToString(command[2], 16));
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com.Write(command, 0, 3);
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}
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}
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public void Close() {
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if (com.IsOpen)
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{
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Off(); //Make sure the horn is off before closing the com port...
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com.Close();
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}
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}
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public static string[] GetPorts()
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{
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string[] ports;
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if (SerialPort.GetPortNames().Length != 0)
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{
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ports = SerialPort.GetPortNames();
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}
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else
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{
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ports = new string[]{ "N/A" };
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}
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return ports;
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}
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}
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}
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