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// Noctigon KR4 (no DD FET) PWM helper functions
// Copyright (C) 2020-2023 Selene ToyKeeper
// SPDX-License-Identifier: GPL-3.0-or-later
#pragma once
#include "chan-rgbaux.c"
// single set of LEDs with linear power channel
void set_level_main(uint8_t level) {
if (level == 0) {
CH1_PWM = 0;
CH2_PWM = 0;
PWM_CNT = 0; // reset phase
CH1_ENABLE_PORT &= ~(1 << CH1_ENABLE_PIN); // disable opamp
return;
}
CH1_ENABLE_PORT |= (1 << CH1_ENABLE_PIN); // enable opamp
level --; // PWM array index = level - 1
PWM_DATATYPE ch1_pwm = PWM_GET(pwm1_levels, level);
// pulse frequency modulation, a.k.a. dynamic PWM
uint16_t top = PWM_GET16(pwm_tops, level);
CH1_PWM = ch1_pwm;
CH2_PWM = 0;
// wait to sync the counter and avoid flashes
while(actual_level && (PWM_CNT > (top - 32))) {}
PWM_TOP = top;
// force reset phase when turning on from zero
// (because otherwise the initial response is inconsistent)
if (! actual_level) PWM_CNT = 0;
}
bool gradual_tick_main(uint8_t gt) {
PWM_DATATYPE pwm1 = PWM_GET(pwm1_levels, gt);
GRADUAL_ADJUST_SIMPLE(pwm1, CH1_PWM);
if ( (pwm1 == CH1_PWM)
) {
return true; // done
}
return false; // not done yet
}
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