moel@1: /*
moel@1:   
moel@1:   Version: MPL 1.1/GPL 2.0/LGPL 2.1
moel@1: 
moel@1:   The contents of this file are subject to the Mozilla Public License Version
moel@1:   1.1 (the "License"); you may not use this file except in compliance with
moel@1:   the License. You may obtain a copy of the License at
moel@1:  
moel@1:   http://www.mozilla.org/MPL/
moel@1: 
moel@1:   Software distributed under the License is distributed on an "AS IS" basis,
moel@1:   WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
moel@1:   for the specific language governing rights and limitations under the License.
moel@1: 
moel@1:   The Original Code is the Open Hardware Monitor code.
moel@1: 
moel@1:   The Initial Developer of the Original Code is 
moel@1:   Michael Möller <m.moeller@gmx.ch>.
moel@1:   Portions created by the Initial Developer are Copyright (C) 2009-2010
moel@1:   the Initial Developer. All Rights Reserved.
moel@1: 
moel@1:   Contributor(s):
moel@1: 
moel@1:   Alternatively, the contents of this file may be used under the terms of
moel@1:   either the GNU General Public License Version 2 or later (the "GPL"), or
moel@1:   the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
moel@1:   in which case the provisions of the GPL or the LGPL are applicable instead
moel@1:   of those above. If you wish to allow use of your version of this file only
moel@1:   under the terms of either the GPL or the LGPL, and not to allow others to
moel@1:   use your version of this file under the terms of the MPL, indicate your
moel@1:   decision by deleting the provisions above and replace them with the notice
moel@1:   and other provisions required by the GPL or the LGPL. If you do not delete
moel@1:   the provisions above, a recipient may use your version of this file under
moel@1:   the terms of any one of the MPL, the GPL or the LGPL.
moel@1:  
moel@1: */
moel@1: 
moel@1: using System;
moel@1: using System.Collections.Generic;
moel@1: using System.IO;
moel@1: using System.IO.Ports;
moel@32: using System.Text;
moel@1: using System.Threading;
moel@1: 
moel@1: namespace OpenHardwareMonitor.Hardware.TBalancer {
moel@1:   public class TBalancerGroup : IGroup {
moel@1: 
moel@1:     private List<TBalancer> hardware = new List<TBalancer>();
moel@32:     private StringBuilder report = new StringBuilder();
moel@1: 
moel@1:     public TBalancerGroup() {
moel@32:    
moel@32:       string[] portNames = SerialPort.GetPortNames();      
moel@1:       for (int i = portNames.Length - 1; i >= 0; i--) {
moel@1:         try {
moel@32: 
moel@1:           SerialPort serialPort =
moel@1:             new SerialPort(portNames[i], 19200, Parity.None, 8, StopBits.One);
moel@47:           
moel@1:           bool isValid = false;
moel@33:           byte protocolVersion = 0;
moel@41:           report.Append("Port Name: "); report.AppendLine(portNames[i]);
moel@32: 
moel@47:           try {
moel@47:             serialPort.Open();
moel@47:           } catch (UnauthorizedAccessException) {
moel@47:             report.AppendLine("Exception: Access Denied");
moel@47:           }
moel@47:        
moel@41:           if (serialPort.IsOpen) {
moel@47:             if (serialPort.CtsHolding) {
moel@47:               serialPort.DiscardInBuffer();
moel@47:               serialPort.DiscardOutBuffer();
moel@47:               serialPort.Write(new byte[] { 0x38 }, 0, 1);
moel@47:               int j = 0;
moel@47:               while (serialPort.BytesToRead == 0 && j < 2) {
moel@47:                 Thread.Sleep(100);
moel@47:                 j++;
moel@47:               }
moel@47:               if (serialPort.BytesToRead > 0) {
moel@47:                 if (serialPort.ReadByte() == TBalancer.STARTFLAG) {
moel@47:                   while (serialPort.BytesToRead < 284 && j < 5) {
moel@47:                     Thread.Sleep(100);
moel@47:                     j++;
moel@47:                   }
moel@47:                   int length = serialPort.BytesToRead;
moel@47:                   if (length >= 284) {
moel@47:                     byte[] data = new byte[285];
moel@47:                     data[0] = TBalancer.STARTFLAG;
moel@47:                     for (int k = 1; k < data.Length; k++)
moel@47:                       data[k] = (byte)serialPort.ReadByte();
moel@32: 
moel@47:                     // check protocol version 2X (protocols seen: 2C, 2A, 28)
moel@47:                     isValid = (data[274] & 0xF0) == 0x20;
moel@47:                     protocolVersion = data[274];
moel@47:                     if (!isValid) {
moel@47:                       report.Append("Status: Wrong Protocol Version: 0x");
moel@47:                       report.AppendLine(protocolVersion.ToString("X"));
moel@47:                     }
moel@47:                   } else {
moel@47:                     report.AppendLine("Status: Wrong Message Length: " +length);
moel@41:                   }
moel@41:                 } else {
moel@47:                   report.AppendLine("Status: Wrong Startflag");
moel@32:                 }
moel@32:               } else {
moel@47:                 report.AppendLine("Status: No Response");
moel@1:               }
moel@32:             } else {
moel@47:               report.AppendLine("Status: Not Clear to Send");
moel@1:             }
moel@47:             serialPort.DiscardInBuffer();
moel@47:             serialPort.Close();
moel@47:           } else {            
moel@41:             report.AppendLine("Status: Port not Open");
moel@47:           }                          
moel@1:           if (isValid) {
moel@32:             report.AppendLine("Status: OK");
moel@33:             hardware.Add(new TBalancer(portNames[i], protocolVersion));
moel@1:             return;
moel@1:           }
moel@32:         } catch (IOException ioe) {
moel@32:           report.AppendLine(ioe.ToString());
moel@32:         } catch (NullReferenceException ne) {
moel@32:           report.AppendLine(ne.ToString());
moel@32:         }
moel@41:         report.AppendLine();
moel@1:       }
moel@1:     }
moel@1: 
moel@1:     public IHardware[] Hardware {
moel@1:       get {
moel@1:         return hardware.ToArray();
moel@1:       }
moel@1:     }
moel@1: 
moel@1:     public string GetReport() {
moel@32:       if (report.Length > 0) {
moel@32:         report.Insert(0, "Serial Port T-Balancer" + Environment.NewLine +
moel@45:           Environment.NewLine);
moel@45:         report.AppendLine();
moel@32:         return report.ToString();
moel@32:       } else
moel@32:         return null;
moel@1:     }
moel@1: 
moel@1:     public void Close() {
moel@1:       foreach (TBalancer tbalancer in hardware)
moel@1:         tbalancer.Close();
moel@1:     }
moel@1:   }
moel@1: }