mirror of https://github.com/contiki-ng/mspsim
Merge pull request #14 from lebrush/temp-chipsets
TemperatureChip interface and TI TMP112 chipset implementation
This commit is contained in:
Joakim Eriksson
commit
f302d46cc9
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/* Copyright (c) 2013, tado° GmbH. Munich, Germany.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the Institute nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of MSPSim.
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*
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* Author: Víctor Ariño <victor.arino@tado.com>
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*
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*/
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package se.sics.mspsim.chip;
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import se.sics.mspsim.core.MSP430Core;
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import se.sics.mspsim.core.USARTSource;
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/**
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* Temperature chipset TI tmp112 emulation
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*
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* @author Víctor Ariño <victor.arino@tado.com>
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*/
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public class TMP112 extends I2CUnit implements TemperatureChip {
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private int temperature = 0; // in degrees
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private int config = 0x60a0; // default config
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private boolean extendedMode = false;
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private boolean polarity = false;
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private boolean alarm = false;
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private boolean shutdown = false;
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private boolean thermostat = false;
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private int resolution = 0x03;
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private boolean oneShot = false;
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private float[] resFactors = { 50f, 25f, 12.5f, 6.25f };
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public static final int TEMP_REG = 0;
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public static final int CONFIG_REG = 1;
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public static final int TEMP_L_REG = 2;
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public static final int TEMP_H_REG = 3;
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public TMP112(USARTSource src, MSP430Core cpu) {
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super("tmp112", 0x48, src, cpu);
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}
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@Override
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protected int registerRead(int address) {
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switch (address) {
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case TEMP_REG:
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return getRawTemperature() & 0xffff;
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case CONFIG_REG:
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return config;
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case TEMP_L_REG:
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case TEMP_H_REG:
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logw("not implemented");
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break;
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}
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return 0;
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}
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@Override
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protected void registerWrite(int address, int value) {
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switch (address) {
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case CONFIG_REG:
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config = value;
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/* Parse some of the configurations */
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polarity = ((value & 0x400) > 0);
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extendedMode = ((value & 0x10) > 0);
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alarm = ((value & 0x020) > 0);
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shutdown = ((value & 0x100) > 0);
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thermostat = ((value & 0x200) > 0);
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resolution = ((value & 0x6000) >> 13);
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oneShot = ((value & 0x8000) > 0);
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break;
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default:
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logw("not implemented");
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break;
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}
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}
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/**
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* Get the raw temperature
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*
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* The temperature in the class is stored in a user-friendly way, however the
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* chipset must transmit it in a specific way without resolution conversions.
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* This is done by this function: convert a temperature into the format that
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* the tmp112 would send it to via i2c.
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*
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* @return
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*/
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private synchronized int getRawTemperature() {
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int tmp = (int) (Math.abs(temperature) / resFactors[resolution]);
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if (temperature < 0) {
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/* Do the two-complements value and mask it */
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int nbits = 9 + resolution + (extendedMode ? 1 : 0);
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int mask = (int) ((1L << nbits) - 1);
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tmp = ~tmp + 1;
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tmp &= mask;
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}
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return tmp << 4;
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}
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@Override
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public synchronized int getTemperature() {
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return temperature;
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}
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@Override
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public synchronized void setTemperature(int temp) {
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if (temp <= getMaxTemperature() && temp >= getMinTemperature()) {
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temperature = temp;
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}
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}
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@Override
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public int getMaxTemperature() {
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int nbits = 9 + resolution + (extendedMode ? 1 : 0);
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nbits -= 1;
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return (int) (((1L << nbits) - 1) * resFactors[resolution]);
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}
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@Override
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public int getMinTemperature() {
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return -4000;
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}
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public int getConfig() {
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return config;
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}
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public boolean isExtendedMode() {
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return extendedMode;
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}
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public boolean isPolarity() {
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return polarity;
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}
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public boolean isAlarm() {
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return alarm;
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}
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public boolean isShutdown() {
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return shutdown;
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}
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public boolean isThermostat() {
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return thermostat;
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}
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public int getResolution() {
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return resolution;
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}
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public boolean isOneShot() {
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return oneShot;
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}
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}
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@ -0,0 +1,73 @@
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/* Copyright (c) 2013, tado° GmbH. Munich, Germany.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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||||
* are met:
|
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* 1. Redistributions of source code must retain the above copyright
|
||||
* notice, this list of conditions and the following disclaimer.
|
||||
* 2. Redistributions in binary form must reproduce the above copyright
|
||||
* notice, this list of conditions and the following disclaimer in the
|
||||
* documentation and/or other materials provided with the distribution.
|
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* 3. Neither the name of the Institute nor the names of its contributors
|
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* may be used to endorse or promote products derived from this software
|
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* without specific prior written permission.
|
||||
*
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* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
|
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
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* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
|
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* This file is part of MSPSim.
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*
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* Author: Víctor Ariño <victor.arino@tado.com>
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*
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*/
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package se.sics.mspsim.chip;
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/**
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* Interface for a temperature chip.
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*
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* Implementing this interface makes it compatible with the cooja-interfaces
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* and hence makes the peripheral implementation way easier
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*
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* @author Víctor Ariño <victor.arino@tado.com>
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*/
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public interface TemperatureChip {
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/**
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* Get the current temperature on the chip
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*
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* @return
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*/
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public int getTemperature();
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/**
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* Set a new temperature on the chip
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*
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* @param temp
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* temperature to set in XXYY format where XX.YY°C
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*/
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public void setTemperature(int temp);
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/**
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* Get the maximum temperature allowed by the chipset
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*
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* @return
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*/
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public int getMaxTemperature();
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/**
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* Get the minimum temperature allowed by the chipset
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*
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* @return
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*/
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public int getMinTemperature();
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}
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