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/*
****************************************************************************
*
* simulavr - A simulator for the Atmel AVR family of microcontrollers.
* Copyright (C) 2001, 2002, 2003 Klaus Rudolph
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
****************************************************************************
*
* $Id$
*/
#include "adcpin.h"
#include "avrerror.h"
AdcPin::AdcPin(const char* fileName, Net& pinNet) throw():
_analogPin(),
_anaFile(fileName)
{
_analogPin.outState = Pin::ANALOG;
pinNet.Add(&_analogPin);
if(!_anaFile)
avr_error("Cannot open Analog input file '%s'.", fileName);
}
char* readNextLine(std::ifstream& f, char* buffer, unsigned len, SystemClockOffset *timeToNextStepIn_ns) {
for(unsigned i = 0; i < 2; ++i){
while(f.getline(buffer, len)){
// Skip comment lines
if(buffer[0] == '#')
continue;
return buffer;
}
f.clear();
f.seekg (0, std::ios::beg);
}
return 0;
}
int AdcPin::Step(bool &trueHwStep, SystemClockOffset *timeToNextStepIn_ns) {
char lineBuffer[1024];
if(!readNextLine(_anaFile, lineBuffer, sizeof(lineBuffer), timeToNextStepIn_ns)) {
_anaFile.close();
}
char* p = lineBuffer;
unsigned long delayInNs = strtoul(p, &p, 0);
int analogValue = (int)strtol(p, &p, 0);
if(analogValue > 5000000) // limit to 5000000 = 5.0V
// this isn't correct, because it dosn't respect real Vcc level
analogValue = 5000000;
_analogPin.setAnalogValue(0.000001 * analogValue);
*timeToNextStepIn_ns = delayInNs;
return 0;
}
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