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CapacitorController.cpp
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CapacitorController.cpp
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#include "CapacitorController.h"
#include "config.h"
CapacitorController::CapacitorController()
: direction_( NONE )
, speed_( IDLE )
, pwmState_( DISABLED )
, pwmPin_( 0 )
, pwmHighTimeMs_( 0 )
, pwmLowTimeMs_( 0 )
, pwmStateStartTime_( 0 )
{
// empty
}
CapacitorController::~CapacitorController()
{
// empty
}
void CapacitorController::setup()
{
// Initialize both tuning pins to low.
pinMode(TUNE_UP_PIN, OUTPUT);
pinMode(TUNE_DOWN_PIN, OUTPUT);
pinMode(TUNE_LED_PIN, OUTPUT);
disableTuningPins_();
}
void CapacitorController::setDirection(Direction dir)
{
// Force both tuning pins to low in the event of a direction change
// to guarantee that the system doesn't short out.
disableTuningPins_();
pwmState_ = DISABLED;
pwmStateStartTime_ = 0;
// Set direction. Next call to process() will set the needed pin to high.
direction_ = dir;
}
CapacitorController::Direction CapacitorController::getDirection() const
{
return direction_;
}
void CapacitorController::setSpeed(CapacitorController::Speed speed)
{
speed_ = speed;
}
CapacitorController::Speed CapacitorController::getSpeed() const
{
return speed_;
}
bool CapacitorController::getOneShot() const
{
return oneShot_;
}
void CapacitorController::setOneShot(bool val)
{
oneShot_ = true;
}
void CapacitorController::process()
{
// Set next PWM state.
if (speed_ == IDLE)
{
disableTuningPins_();
pwmState_ = DISABLED;
}
else if (speed_ == FINE)
{
setPwmSettings(direction_ == DOWN ? TUNE_DOWN_PIN : TUNE_UP_PIN, TUNE_FINE_PULSE_ON_TIME_MS, TUNE_FINE_PULSE_OFF_TIME_MS);
}
else if (speed_ == SLOW)
{
setPwmSettings(direction_ == DOWN ? TUNE_DOWN_PIN : TUNE_UP_PIN, TUNE_SLOW_PULSE_ON_TIME_MS, TUNE_SLOW_PULSE_OFF_TIME_MS);
}
else if (speed_ == FAST)
{
setPwmSettings(direction_ == DOWN ? TUNE_DOWN_PIN : TUNE_UP_PIN, TUNE_FAST_PULSE_ON_TIME_MS, TUNE_FAST_PULSE_OFF_TIME_MS);
}
// PWM handling
if (pwmState_ != DISABLED)
{
auto currentTime = millis();
if (pwmStateStartTime_ == 0) pwmStateStartTime_ = currentTime;
switch (pwmState_)
{
case PWM_HIGH:
//GPOC = (1 << TUNE_LED_PIN);
//GPOS = (1 << pwmPin_);
digitalWrite(TUNE_LED_PIN, LOW);
digitalWrite(pwmPin_, HIGH);
if ((currentTime - pwmStateStartTime_) >= pwmHighTimeMs_)
{
if (pwmLowTimeMs_ > 0)
{
disableTuningPins_();
pwmState_ = PWM_LOW;
}
pwmStateStartTime_ = 0; // Will reset to the current time on next loop
}
break;
case PWM_LOW:
//GPOS = (1 << TUNE_LED_PIN);
//GPOC = (1 << pwmPin_);
digitalWrite(TUNE_LED_PIN, HIGH);
digitalWrite(pwmPin_, LOW);
if ((currentTime - pwmStateStartTime_) >= pwmLowTimeMs_)
{
disableTuningPins_();
pwmState_ = oneShot_ ? DISABLED : PWM_HIGH;
pwmStateStartTime_ = 0; // Will reset to the current time on next loop
if (oneShot_)
{
oneShot_ = false;
setSpeed(IDLE);
setDirection(NONE);
}
}
break;
}
}
}
void CapacitorController::disableTuningPins_()
{
// Directly manipulating the needed registers is far faster than using
// digitalWrite() and thus will reduce the overshoot when switching directions.
//GPOC = (1 << TUNE_UP_PIN) | (1 << TUNE_DOWN_PIN);
//GPOS = (1 << TUNE_LED_PIN);
digitalWrite(TUNE_UP_PIN, LOW);
digitalWrite(TUNE_DOWN_PIN, LOW);
digitalWrite(TUNE_LED_PIN, HIGH);
}
void CapacitorController::forceStop()
{
disableTuningPins_();
speed_ = IDLE;
direction_ = NONE;
pwmState_ = DISABLED;
}
void CapacitorController::setPwmSettings(int pin, int highTimeMs, int lowTimeMs)
{
if (pwmState_ == DISABLED || pin != pwmPin_ || highTimeMs != pwmHighTimeMs_ || lowTimeMs != pwmLowTimeMs_)
{
disableTuningPins_();
pwmPin_ = pin;
pwmHighTimeMs_ = highTimeMs;
pwmLowTimeMs_ = lowTimeMs;
pwmState_ = PWM_HIGH;
pwmStateStartTime_ = 0; // will reset on next loop
}
}