diff options
Diffstat (limited to 'hwdef-noctigon-m44.c')
| -rw-r--r-- | hwdef-noctigon-m44.c | 262 |
1 files changed, 262 insertions, 0 deletions
diff --git a/hwdef-noctigon-m44.c b/hwdef-noctigon-m44.c new file mode 100644 index 0000000..395a7a2 --- /dev/null +++ b/hwdef-noctigon-m44.c @@ -0,0 +1,262 @@ +// hwdef for Noctigon M44 2-channel light +// Copyright (C) 2023 Selene ToyKeeper +// SPDX-License-Identifier: GPL-3.0-or-later +#pragma once + +#include "chan-rgbaux.c" + + +void set_level_zero(); + +void set_level_ch1(uint8_t level); +void set_level_ch2(uint8_t level); +void set_level_both(uint8_t level); +void set_level_blend(uint8_t level); +void set_level_auto(uint8_t level); + +bool gradual_tick_ch1(uint8_t gt); +bool gradual_tick_ch2(uint8_t gt); +bool gradual_tick_both(uint8_t gt); +bool gradual_tick_blend(uint8_t gt); +bool gradual_tick_auto(uint8_t gt); + + +Channel channels[] = { + { // channel 1 only + .set_level = set_level_ch1, + .gradual_tick = gradual_tick_ch1, + .has_args = 0 + }, + { // channel 2 only + .set_level = set_level_ch2, + .gradual_tick = gradual_tick_ch2, + .has_args = 0 + }, + { // both channels, tied together (max "200%" power) + .set_level = set_level_both, + .gradual_tick = gradual_tick_both, + .has_args = 0 + }, + { // both channels, manual blend (max "100%" power) + .set_level = set_level_blend, + .gradual_tick = gradual_tick_blend, + .has_args = 1 + }, + { // both channels, auto blend + .set_level = set_level_auto, + .gradual_tick = gradual_tick_auto, + .has_args = 1 + }, + RGB_AUX_CHANNELS +}; + + +void set_level_zero() { + // disable timer overflow interrupt + // (helps improve button press handling from Off state) + DSM_INTCTRL &= ~DSM_OVF_bm; + + // turn off all LEDs + ch1_dsm_lvl = 0; + ch2_dsm_lvl = 0; + CH1_PWM = 0; + CH2_PWM = 0; + PWM_CNT = 0; + CH1_ENABLE_PORT &= ~(1 << CH1_ENABLE_PIN); // disable opamp + CH2_ENABLE_PORT &= ~(1 << CH2_ENABLE_PIN); // disable opamp +} + + +// wrap setting the dsm vars, to get a faster response +// (just setting *_dsm_lvl doesn't work well for strobes) +// set new values for both channels, +// handling any possible combination +// and any before/after state +void set_hw_levels(PWM_DATATYPE ch1, PWM_DATATYPE ch2, + bool ch1_on, bool ch2_on) { + + bool was_on = (CH1_PWM>0) || (CH2_PWM>0) + || ( CH1_ENABLE_PORT & (1 << CH1_ENABLE_PIN) ) + || ( CH2_ENABLE_PORT & (1 << CH2_ENABLE_PIN) ); + //bool now_on = (ch1>0) || (ch2>0) || ch1_on || ch2_on; + + #if 0 // not needed any more, after switching to PWM+DSM + // phase-correct PWM at zero (for flicker-free moon), + // fast PWM otherwise + if (ch1 || ch2) + TCCR1B = (0<<CS12) | (0<<CS11) | (1<<CS10) // clk/1 (no prescaling) (DS table 12-6) + | (1<<WGM13) | (1<<WGM12) // fast adjustable PWM (DS table 12-5) + //| (1<<WGM13) | (0<<WGM12) // phase-correct adjustable PWM (DS table 12-5) + ; + else + TCCR1B = (0<<CS12) | (0<<CS11) | (1<<CS10) // clk/1 (no prescaling) (DS table 12-6) + //| (1<<WGM13) | (1<<WGM12) // fast adjustable PWM (DS table 12-5) + | (1<<WGM13) | (0<<WGM12) // phase-correct adjustable PWM (DS table 12-5) + ; + #endif + + if (ch1 || ch1_on) + CH1_ENABLE_PORT |= (1 << CH1_ENABLE_PIN); // enable opamp + else + CH1_ENABLE_PORT &= ~(1 << CH1_ENABLE_PIN); // disable opamp + + if (ch2 || ch2_on) + CH2_ENABLE_PORT |= (1 << CH2_ENABLE_PIN); // enable opamp + else + CH2_ENABLE_PORT &= ~(1 << CH2_ENABLE_PIN); // disable opamp + + // set delta-sigma soft levels + ch1_dsm_lvl = ch1; + ch2_dsm_lvl = ch2; + + // set hardware PWM levels and init dsm loop + CH1_PWM = ch1_pwm = ch1 >> 7; + CH2_PWM = ch2_pwm = ch2 >> 7; + + #if 0 // not needed any more, after switching to PWM+DSM + // manual phase sync when changing level while already on + if (was_on && now_on) while(PWM_CNT > (top - 32)) {} + + PWM_TOP = top; + #endif + + // enable timer overflow interrupt so DSM can work + DSM_INTCTRL |= DSM_OVF_bm; + + // reset phase when turning on + //if ((! was_on) | (! now_on)) PWM_CNT = 0; + if (! was_on) PWM_CNT = 0; + +} + +// delta-sigma modulation of PWM outputs +// happens on each Timer overflow (every 512 cpu clock cycles) +// uses 8-bit pwm w/ 7-bit dsm (0b 0PPP PPPP PDDD DDDD) +ISR(DSM_vect) { + // set new hardware values first, + // for best timing (reduce effect of interrupt jitter) + CH1_PWM = ch1_pwm; + CH2_PWM = ch2_pwm; + + // calculate next values, now that timing matters less + + // accumulate error + ch1_dsm += (ch1_dsm_lvl & 0x007f); + // next PWM = base PWM value + carry bit + ch1_pwm = (ch1_dsm_lvl >> 7) + (ch1_dsm > 0x7f); + // clear carry bit + ch1_dsm &= 0x7f; + + // repeat for other channels + + ch2_dsm += (ch2_dsm_lvl & 0x007f); + ch2_pwm = (ch2_dsm_lvl >> 7) + (ch2_dsm > 0x7f); + ch2_dsm &= 0x7f; +} + + +void set_level_ch1(uint8_t level) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, level); + set_hw_levels(pwm, 0, + 1, 0); +} + +void set_level_ch2(uint8_t level) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, level); + set_hw_levels(0, pwm, + 0, 1); +} + +void set_level_both(uint8_t level) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, level); + set_hw_levels(pwm, pwm, + 1, 1); +} + +void blend_helper(PWM_DATATYPE *warm, PWM_DATATYPE *cool, uint8_t level) { + PWM_DATATYPE brightness = PWM_GET(pwm1_levels, level); + uint8_t blend; + if (channel_mode == CM_AUTO) { + blend = 255 * (uint16_t)level / RAMP_SIZE; + if (cfg.channel_mode_args[channel_mode] & 0b01000000) + blend = 255 - blend; + } else { + blend = cfg.channel_mode_args[channel_mode]; + } + + calc_2ch_blend(warm, cool, brightness, DSM_TOP, blend); +} + +void set_level_blend(uint8_t level) { + PWM_DATATYPE warm, cool; + uint8_t blend = cfg.channel_mode_args[channel_mode]; + blend_helper(&warm, &cool, level); + // don't turn off either emitter entirely while using middle blends + set_hw_levels(warm, cool, + blend < 255, blend > 0); +} + +void set_level_auto(uint8_t level) { + PWM_DATATYPE warm, cool; + blend_helper(&warm, &cool, level); + // don't turn off either emitter entirely + // (it blinks pretty bright when the regulator turns on mid-ramp) + set_hw_levels(warm, cool, + 1, 1); +} + +///// "gradual tick" functions for smooth thermal regulation ///// +// (and other smooth adjustments) + +///// bump each channel toward a target value ///// +bool gradual_adjust(PWM_DATATYPE ch1, PWM_DATATYPE ch2) { + // adjust multiple times based on current brightness + // (so it adjusts faster/coarser when bright, slower/finer when dim) + + // higher shift = slower/finer adjustments + const uint8_t shift = 9; // ((255 << 7) >> 9) = 63 max + uint8_t steps; + + steps = ch1_dsm_lvl >> shift; + for (uint8_t i=0; i<=steps; i++) + GRADUAL_ADJUST_SIMPLE(ch1, ch1_dsm_lvl); + + steps = ch2_dsm_lvl >> shift; + for (uint8_t i=0; i<=steps; i++) + GRADUAL_ADJUST_SIMPLE(ch2, ch2_dsm_lvl); + + if ((ch1 == ch1_dsm_lvl) + && (ch2 == ch2_dsm_lvl )) { + return true; // done + } + return false; // not done yet +} + +bool gradual_tick_ch1(uint8_t gt) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, gt); + return gradual_adjust(pwm, 0); +} + +bool gradual_tick_ch2(uint8_t gt) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, gt); + return gradual_adjust(0, pwm); +} + +bool gradual_tick_both(uint8_t gt) { + PWM_DATATYPE pwm = PWM_GET(pwm1_levels, gt); + return gradual_adjust(pwm, pwm); +} + +bool gradual_tick_blend(uint8_t gt) { + PWM_DATATYPE warm, cool; + blend_helper(&warm, &cool, gt); + return gradual_adjust(warm, cool); +} + +bool gradual_tick_auto(uint8_t gt) { + PWM_DATATYPE warm, cool; + blend_helper(&warm, &cool, gt); + return gradual_adjust(warm, cool); +} + + |