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using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO.Ports;
using System.Linq;
using System.Runtime.InteropServices;
using System.Text;
using System.Threading.Tasks;
using UsbLibrary;
namespace Cluster.iButtonLib
{
public class iButtonConnectionUsb
{
const int VID = 0x0C16;
const int PID = 0xDF05;
public iButtonConnectionUsb()
{
}
private HIDDevice OpenDevice()
{
return HIDDevice.FindDevice(VID, PID);
}
public bool IsPresent()
{
var device = OpenDevice();
var present = device != null;
if (present)
device.Dispose();
return present;
}
public iButtonKey[] ReadKeys()
{
var device = OpenDevice();
byte[] buffer = new byte[9];
try
{
var result = new List<iButtonKey>();
int keyCount = 0;
bool initPacket;
do
{
initPacket = true;
device.Read(buffer, 0, 9);
for (int i = 2; i < 8; i++)
{
if (buffer[i] != 0xFF) initPacket = false;
}
} while (!initPacket) ;
keyCount = buffer[1];
for (int key = 0; key < keyCount; key++)
{
device.Read(buffer, 0, 9);
result.Add(new iButtonKey(buffer, 1));
}
return result.ToArray();
}
finally
{
device.Dispose();
}
}
public void Erase()
{
var device = OpenDevice();
try
{
byte[] buffer = new byte[9] { 0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};
device.Write(buffer, 0, 9);
}
finally
{
device.Dispose();
}
}
public void Write(iButtonKey key)
{
var device = OpenDevice();
try
{
byte[] buffer = new byte[9];
buffer[0] = 0;
var keyBuffer = key.ToArray();
for (int i = 1; i <= 8; i++)
buffer[i] = keyBuffer[i - 1];
device.Write(buffer, 0, 9);
}
finally
{
device.Dispose();
}
}
}
}
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