Refactored the hardware monitoring code into a library (Issue 101).
3 Version: MPL 1.1/GPL 2.0/LGPL 2.1
5 The contents of this file are subject to the Mozilla Public License Version
6 1.1 (the "License"); you may not use this file except in compliance with
7 the License. You may obtain a copy of the License at
9 http://www.mozilla.org/MPL/
11 Software distributed under the License is distributed on an "AS IS" basis,
12 WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13 for the specific language governing rights and limitations under the License.
15 The Original Code is the Open Hardware Monitor code.
17 The Initial Developer of the Original Code is
18 Michael Möller <m.moeller@gmx.ch>.
19 Portions created by the Initial Developer are Copyright (C) 2009-2010
20 the Initial Developer. All Rights Reserved.
24 Alternatively, the contents of this file may be used under the terms of
25 either the GNU General Public License Version 2 or later (the "GPL"), or
26 the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 in which case the provisions of the GPL or the LGPL are applicable instead
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33 the provisions above, a recipient may use your version of this file under
34 the terms of any one of the MPL, the GPL or the LGPL.
39 using System.Collections.Generic;
42 namespace OpenHardwareMonitor.Hardware.LPC {
43 internal class IT87XX : ISuperIO {
45 private ushort address;
49 private readonly ushort addressReg;
50 private readonly ushort dataReg;
52 private float?[] voltages = new float?[0];
53 private float?[] temperatures = new float?[0];
54 private float?[] fans = new float?[0];
57 private const byte ITE_VENDOR_ID = 0x90;
59 // Environment Controller
60 private const byte ADDRESS_REGISTER_OFFSET = 0x05;
61 private const byte DATA_REGISTER_OFFSET = 0x06;
63 // Environment Controller Registers
64 private const byte CONFIGURATION_REGISTER = 0x00;
65 private const byte TEMPERATURE_BASE_REG = 0x29;
66 private const byte VENDOR_ID_REGISTER = 0x58;
67 private const byte FAN_TACHOMETER_16_BIT_ENABLE_REGISTER = 0x0c;
68 private byte[] FAN_TACHOMETER_REG =
69 new byte[] { 0x0d, 0x0e, 0x0f, 0x80, 0x82 };
70 private byte[] FAN_TACHOMETER_EXT_REG =
71 new byte[] { 0x18, 0x19, 0x1a, 0x81, 0x83 };
72 private const byte VOLTAGE_BASE_REG = 0x20;
74 private byte ReadByte(byte register, out bool valid) {
75 WinRing0.WriteIoPortByte(addressReg, register);
76 byte value = WinRing0.ReadIoPortByte(dataReg);
77 valid = register == WinRing0.ReadIoPortByte(addressReg);
81 public IT87XX(Chip chip, ushort address, byte version) {
83 this.address = address;
85 this.version = version;
86 this.addressReg = (ushort)(address + ADDRESS_REGISTER_OFFSET);
87 this.dataReg = (ushort)(address + DATA_REGISTER_OFFSET);
91 byte vendorId = ReadByte(VENDOR_ID_REGISTER, out valid);
92 if (!valid || vendorId != ITE_VENDOR_ID)
95 // Bit 0x10 of the configuration register should always be 1
96 if ((ReadByte(CONFIGURATION_REGISTER, out valid) & 0x10) == 0)
101 voltages = new float?[9];
102 temperatures = new float?[3];
103 fans = new float?[5];
106 public Chip Chip { get { return chip; } }
107 public float?[] Voltages { get { return voltages; } }
108 public float?[] Temperatures { get { return temperatures; } }
109 public float?[] Fans { get { return fans; } }
111 public string GetReport() {
112 StringBuilder r = new StringBuilder();
114 r.AppendLine("LPC " + this.GetType().Name);
116 r.Append("Chip ID: 0x"); r.AppendLine(chip.ToString("X"));
117 r.Append("Chip Version: 0x"); r.AppendLine(version.ToString("X"));
118 r.Append("Base Address: 0x"); r.AppendLine(address.ToString("X4"));
121 if (!WinRing0.WaitIsaBusMutex(100))
124 r.AppendLine("Environment Controller Registers");
126 r.AppendLine(" 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F");
128 for (int i = 0; i <= 0xA; i++) {
129 r.Append(" "); r.Append((i << 4).ToString("X2")); r.Append(" ");
130 for (int j = 0; j <= 0xF; j++) {
133 byte value = ReadByte((byte)((i << 4) | j), out valid);
135 r.Append(value.ToString("X2"));
143 WinRing0.ReleaseIsaBusMutex();
148 public void Update() {
149 if (!WinRing0.WaitIsaBusMutex(10))
152 for (int i = 0; i < voltages.Length; i++) {
154 float value = 0.001f * ((int)ReadByte(
155 (byte)(VOLTAGE_BASE_REG + i), out valid) << 4);
164 for (int i = 0; i < temperatures.Length; i++) {
166 sbyte value = (sbyte)ReadByte(
167 (byte)(TEMPERATURE_BASE_REG + i), out valid);
171 if (value < sbyte.MaxValue && value > 0)
172 temperatures[i] = value;
174 temperatures[i] = null;
177 for (int i = 0; i < fans.Length; i++) {
179 int value = ReadByte(FAN_TACHOMETER_REG[i], out valid);
182 value |= ReadByte(FAN_TACHOMETER_EXT_REG[i], out valid) << 8;
187 fans[i] = (value < 0xffff) ? 1.35e6f / ((value) * 2) : 0;
193 WinRing0.ReleaseIsaBusMutex();