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devtemp.cpp
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devtemp.cpp
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/**
* Copyright (c) 2016 panStamp <[email protected]>
*
* This file is part of the panStamp project.
*
* panStamp is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* any later version.
*
* panStamp is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with panStamp; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301
* USA
*
* Author: Daniel Berenguer
* Creation date: 01/02/2016
*/
#include "uswap.h"
/**
* Endpoint names
*/
const char VOLTAGE_NAME[] = "VOLTAGE";
const char TEMPERATURE_NAME[] = "TEMPERATURE";
/**
* updateRegister
*
* Update values in memory with new register information
*
* @param regId register id
* @param value register value
*
* @return true if a valid register was updated. Return false otherwise
*/
uint8_t DEVTEMP::updateRegister(uint8_t regId, SWDATA *value)
{
uint16_t tmp;
switch(regId)
{
// Voltage
case VOLTAGE_REGID:
if (value->length != 2)
break;
tmp = value->data[0] << 8;
voltage = tmp | value->data[1];
// Send update to user application
swap.push(address, VOLTAGE_NAME, voltage);
return true;
// Temperature
case TEMPERATURE_REGID:
if (value->length != 2)
break;
tmp = value->data[0] << 8;
tmp |= value->data[1];
temperature = tmp * 0.1 - 50;
// Send update to user application
swap.push(address, TEMPERATURE_NAME, temperature, 1);
return true;
default:
break;
}
return false;
}
/**
* getValue
*
* Get endpoint value
*
* @param val Current value returned in string format
* @param name Endpoint name
*
* @return true if a valid endpoint was found. Return false otherwise
*/
uint8_t DEVTEMP::getValue(char *val, char *name)
{
if (!strcmp(name, VOLTAGE_NAME))
{
sprintf(val, "%d", voltage);
return true;
}
else if (!strcmp(name, TEMPERATURE_NAME))
{
char buf[24];
int integer = (int)temperature;
float decimal = temperature - integer;
decimal *= 10;
sprintf(val, "%d.%d", integer, (int)decimal);
return true;
}
return false;
}