/*--------------------------------------------------------------------------- * Copyright (C) 1999,2000 Dallas Semiconductor Corporation, All Rights Reserved. * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * the rights to use, copy, modify, merge, publish, distribute, sublicense, * and/or sell copies of the Software, and to permit persons to whom the * Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included * in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. * IN NO EVENT SHALL DALLAS SEMICONDUCTOR BE LIABLE FOR ANY CLAIM, DAMAGES * OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR * OTHER DEALINGS IN THE SOFTWARE. * * Except as contained in this notice, the name of Dallas Semiconductor * shall not be used except as stated in the Dallas Semiconductor * Branding Policy. *--------------------------------------------------------------------------- */ package com.dalsemi.onewire.adapter; // imports import com.dalsemi.onewire.adapter.UParameterSettings; import com.dalsemi.onewire.adapter.OneWireState; /** UAdapterState contains the communication state of the DS2480 * based COM port adapter. * //\\//\\ This class is very preliminary and not all * functionality is complete or debugged. This * class is subject to change. //\\//\\ * * @version 0.00, 28 Aug 2000 * @author DS */ class UAdapterState { //-------- //-------- Finals //-------- //------- DS9097U brick baud rates expressed for the DS2480 ichip /** DS9097U brick baud rate expressed for the DS2480 ichip, 9600 baud */ public static final char BAUD_9600 = 0x00; /** DS9097U brick baud rate expressed for the DS2480 ichip, 19200 baud */ public static final char BAUD_19200 = 0x02; /** DS9097U brick baud rate expressed for the DS2480 ichip, 57600 baud */ public static final char BAUD_57600 = 0x04; /** DS9097U brick baud rate expressed for the DS2480 ichip, 115200 baud */ public static final char BAUD_115200 = 0x06; //------- DS9097U speed modes /** DS9097U speed mode, regular speed */ public static final char USPEED_REGULAR = 0x00; /** DS9097U speed mode, flexible speed for long lines */ public static final char USPEED_FLEX = 0x04; /** DS9097U speed mode, overdrive speed */ public static final char USPEED_OVERDRIVE = 0x08; /** DS9097U speed mode, pulse, for program and power delivery */ public static final char USPEED_PULSE = 0x0C; //------- DS9097U modes /** DS9097U data mode */ public static final char MODE_DATA = 0x00E1; /** DS9097U command mode */ public static final char MODE_COMMAND = 0x00E3; /** DS9097U pulse mode */ public static final char MODE_STOP_PULSE = 0x00F1; /** DS9097U special mode (in revision 1 silicon only) */ public static final char MODE_SPECIAL = 0x00F3; //------- DS9097U chip revisions and state /** DS9097U chip revision 1 */ public static final char CHIP_VERSION1 = 0x04; /** DS9097U chip revision mask */ public static final char CHIP_VERSION_MASK = 0x1C; /** DS9097U program voltage available mask */ public static final char PROGRAM_VOLTAGE_MASK = 0x20; /** DS9097U program voltage available mask */ public static final int MAX_ALARM_COUNT = 3000; //-------- //-------- Variables //-------- /** * Parameter settings for the three logical modes */ public UParameterSettings uParameters []; /** * The OneWire State object reference */ public OneWireState oneWireState; /** * Flag true if can stream bits */ public boolean streamBits; /** * Flag true if can stream bytes */ public boolean streamBytes; /** * Flag true if can stream search */ public boolean streamSearches; /** * Flag true if can stream resets */ public boolean streamResets; /** * Current baud rate that we are communicating with the DS9097U * expressed for the DS2480 ichip.

* Valid values can be: *

*/ public char ubaud; /** * This is the current 'real' speed that the OneWire is operating at. * This is used to represent the actual mode that the DS2480 is operting * in. For example the logical speed might be USPEED_REGULAR but for * RF emission reasons we may put the actual DS2480 in SPEED_FLEX.

* The valid values for this are: *

*/ public char uSpeedMode; /** * This is the current state of the DS2480 adapter on program * voltage availablity. 'true' if available. */ public boolean programVoltageAvailable; /** * True when DS2480 is currently in command mode. False when it is in * data mode. */ public boolean inCommandMode; /** * The DS2480 revision number. The current value values are 1 and 2. */ public char revision; /** * Flag to indicate need to search for long alarm check */ protected boolean longAlarmCheck; /** * Count of how many resets have been seen without Alarms */ protected int lastAlarmCount; //-------- //-------- Constructors //-------- /** * Construct the state of the U brick with the defaults */ public UAdapterState (OneWireState newOneWireState) { // get a pointer to the OneWire state object oneWireState = newOneWireState; // set the defaults ubaud = BAUD_9600; uSpeedMode = USPEED_FLEX; revision = 0; inCommandMode = true; streamBits = true; streamBytes = true; streamSearches = true; streamResets = false; programVoltageAvailable = false; longAlarmCheck = false; lastAlarmCount = 0; // create the three speed logical parameter settings uParameters = new UParameterSettings [4]; uParameters [0] = new UParameterSettings(); uParameters [1] = new UParameterSettings(); uParameters [2] = new UParameterSettings(); uParameters [3] = new UParameterSettings(); // adjust flex time uParameters [DSPortAdapter.SPEED_FLEX].pullDownSlewRate = UParameterSettings.SLEWRATE_1p37Vus; uParameters [DSPortAdapter.SPEED_FLEX].write1LowTime = UParameterSettings.WRITE1TIME_12us; uParameters [DSPortAdapter.SPEED_FLEX].sampleOffsetTime = UParameterSettings.SAMPLEOFFSET_TIME_7us; } }