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/*
* fsm-ramping.c: Ramping functions for SpaghettiMonster.
* Handles 1- to 4-channel smooth ramping on a single LED.
*
* Copyright (C) 2017 Selene ToyKeeper
*
* 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 3 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, see <http://www.gnu.org/licenses/>.
*/
#ifndef FSM_RAMPING_C
#define FSM_RAMPING_C
#ifdef USE_RAMPING
void set_level(uint8_t level) {
actual_level = level;
#ifdef USE_SET_LEVEL_GRADUALLY
gradual_target = level;
#endif
//TCCR0A = PHASE;
if (level == 0) {
#if PWM_CHANNELS >= 1
PWM1_LVL = 0;
#endif
#if PWM_CHANNELS >= 2
PWM2_LVL = 0;
#endif
#if PWM_CHANNELS >= 3
PWM3_LVL = 0;
#endif
#if PWM_CHANNELS >= 4
PWM4_LVL = 0;
#endif
} else {
level --;
#if PWM_CHANNELS >= 1
PWM1_LVL = pgm_read_byte(pwm1_levels + level);
#endif
#if PWM_CHANNELS >= 2
PWM2_LVL = pgm_read_byte(pwm2_levels + level);
#endif
#if PWM_CHANNELS >= 3
PWM3_LVL = pgm_read_byte(pwm3_levels + level);
#endif
#if PWM_CHANNELS >= 4
PWM4_LVL = pgm_read_byte(pwm4_levels + level);
#endif
}
}
#ifdef USE_SET_LEVEL_GRADUALLY
inline void set_level_gradually(uint8_t lvl) {
gradual_target = lvl;
}
// call this every frame or every few frames to change brightness very smoothly
void gradual_tick() {
// go by only one ramp level at a time instead of directly to the target
uint8_t gt = gradual_target;
if (gt < actual_level) gt = actual_level - 1;
else if (gt > actual_level) gt = actual_level + 1;
gt --; // convert 1-based number to 0-based
uint8_t target;
#if PWM_CHANNELS >= 1
target = pgm_read_byte(pwm1_levels + gt);
if ((gt < actual_level) // special case for FET-only turbo
&& (PWM1_LVL == 0) // (bypass adjustment period for first step)
&& (target == 255)) PWM1_LVL = 255;
else if (PWM1_LVL < target) PWM1_LVL ++;
else if (PWM1_LVL > target) PWM1_LVL --;
#endif
#if PWM_CHANNELS >= 2
target = pgm_read_byte(pwm2_levels + gt);
if (PWM2_LVL < target) PWM2_LVL ++;
else if (PWM2_LVL > target) PWM2_LVL --;
#endif
#if PWM_CHANNELS >= 3
target = pgm_read_byte(pwm3_levels + gt);
if (PWM3_LVL < target) PWM3_LVL ++;
else if (PWM3_LVL > target) PWM3_LVL --;
#endif
#if PWM_CHANNELS >= 4
target = pgm_read_byte(pwm4_levels + gt);
if (PWM4_LVL < target) PWM4_LVL ++;
else if (PWM4_LVL > target) PWM4_LVL --;
#endif
// did we go far enough to hit the next defined ramp level?
// if so, update the main ramp level tracking var
if ((PWM1_LVL == pgm_read_byte(pwm1_levels + gt))
#if PWM_CHANNELS >= 2
&& (PWM2_LVL == pgm_read_byte(pwm2_levels + gt))
#endif
#if PWM_CHANNELS >= 3
&& (PWM3_LVL == pgm_read_byte(pwm3_levels + gt))
#endif
#if PWM_CHANNELS >= 4
&& (PWM4_LVL == pgm_read_byte(pwm4_levels + gt))
#endif
)
{
actual_level = gt + 1;
}
}
#endif
#endif // ifdef USE_RAMPING
#endif
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