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CommandStation-EX/Hardware.cpp
2020-07-04 21:44:36 +02:00

93 lines
3.2 KiB
C++

/*
* © 2020, Chris Harlow. All rights reserved.
*
* This file is part of Asbelos DCC API
*
* This 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 3 of the License, or
* (at your option) any later version.
*
* It 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 CommandStation. If not, see <https://www.gnu.org/licenses/>.
*/
#include <Arduino.h>
#include <TimerOne.h> // use IDE menu Tools..Manage Libraries to locate and install TimerOne
#include "avdweb_AnalogReadFast.h"
#include "Hardware.h"
#include "Config.h"
#include "DIAG.h"
#if defined(ARDUINO_ARCH_AVR)
#include <DIO2.h> // use IDE menu Tools..Manage Libraries to locate and install DIO2
#define WritePin digitalWrite2
#else
#define WritePin digitalWrite
#endif
void Hardware::init() {
pinMode(MAIN_POWER_PIN, OUTPUT);
pinMode(MAIN_SIGNAL_PIN, OUTPUT);
if (MAIN_SIGNAL_PIN_ALT) pinMode(MAIN_SIGNAL_PIN_ALT, OUTPUT);
pinMode(MAIN_SENSE_PIN, INPUT);
pinMode(PROG_POWER_PIN, OUTPUT);
pinMode(PROG_SIGNAL_PIN, OUTPUT);
if (PROG_SIGNAL_PIN_ALT) pinMode(PROG_SIGNAL_PIN_ALT, OUTPUT);
pinMode(PROG_SENSE_PIN, INPUT);
}
void Hardware::setPower(bool isMainTrack, bool on) {
WritePin(isMainTrack ? MAIN_POWER_PIN : PROG_POWER_PIN, on ? HIGH : LOW);
}
void Hardware::setBrake(bool isMainTrack, bool on) {
WritePin(isMainTrack ? MAIN_BRAKE_PIN : PROG_BRAKE_PIN, on ? LOW:HIGH);
}
void Hardware::setSignal(bool isMainTrack, bool high) {
byte pin = isMainTrack ? MAIN_SIGNAL_PIN : PROG_SIGNAL_PIN;
byte pin2 = isMainTrack ? MAIN_SIGNAL_PIN_ALT : PROG_SIGNAL_PIN_ALT;
WritePin(pin, high ? HIGH : LOW);
if (pin2) WritePin(pin2, high ? LOW : HIGH);
}
int Hardware::getCurrentRaw(bool isMainTrack) {
// IMPORTANT: This function can be called in Interrupt() time within the 56uS timer
// The default analogRead takes ~100uS which is catastrphic
// so analogReadFast is used here. (-2uS)
return analogReadFast(isMainTrack ? MAIN_SENSE_PIN : PROG_SENSE_PIN);
}
unsigned int Hardware::getCurrentMilliamps(bool isMainTrack, int raw) {
return (int)(raw * (isMainTrack ? MAIN_SENSE_FACTOR : PROG_SENSE_FACTOR));
}
void Hardware::setCallback(int duration, void (*isr)()) {
Timer1.initialize(duration);
// We don't want the timer to set pins because these often clash with motor shields etc.
Timer1.disablePwm(TIMER1_A_PIN);
Timer1.disablePwm(TIMER1_B_PIN);
Timer1.attachInterrupt(isr);
}
// Railcom support functions, not yet implemented
//void Hardware::setSingleCallback(int duration, void (*isr)()) {
// Timer2.initialize(duration);
// Timer2.disablePwm(TIMER1_A_PIN);
// Timer2.disablePwm(TIMER1_B_PIN);
// Timer2.attachInterrupt(isr);
//}
//void Hardware::resetSingleCallback(int duration) {
// if (duration==0) Timer2.stop();
// else Timer2.initialize(duration);
//}