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483.12.114
by Selene ToyKeeper
new light / driver: HDR boost driver by thefreeman |
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// thefreeman boost driver 2.1 output helper functions
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// Copyright (C) 2023 Selene ToyKeeper
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// SPDX-License-Identifier: GPL-3.0-or-later
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#pragma once
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#include "chan-rgbaux.c" |
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void set_level_zero(); |
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void set_level_main(uint8_t level); |
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bool gradual_tick_main(uint8_t gt); |
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Channel channels[] = { |
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483.12.126
by Selene ToyKeeper
misc comments, spacing, documentation |
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{ // main LEDs |
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483.12.114
by Selene ToyKeeper
new light / driver: HDR boost driver by thefreeman |
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.set_level = set_level_main, |
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.gradual_tick = gradual_tick_main |
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},
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RGB_AUX_CHANNELS
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};
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void set_level_zero() { |
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DAC_LVL = 0; // DAC off |
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DAC_VREF = V055; // low Vref |
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HDR_ENABLE_PORT &= ~(1 << HDR_ENABLE_PIN); // HDR off |
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// prevent post-off flash
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IN_NFET_ENABLE_PORT |= (1 << IN_NFET_ENABLE_PIN); |
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delay_4ms(IN_NFET_DELAY_TIME/4); |
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IN_NFET_ENABLE_PORT &= ~(1 << IN_NFET_ENABLE_PIN); |
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// turn off boost last
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BST_ENABLE_PORT &= ~(1 << BST_ENABLE_PIN); // BST off |
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}
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// single set of LEDs with 1 regulated power channel
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// and low/high HDR plus low/high Vref as different "gears"
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void set_level_main(uint8_t level) { |
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uint8_t noflash = 0; |
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// when turning on from off, use IN_NFET to prevent a flash
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if ((! actual_level) && (level < HDR_ENABLE_LEVEL_MIN)) { |
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noflash = 1; |
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IN_NFET_ENABLE_PORT |= (1 << IN_NFET_ENABLE_PIN); |
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}
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// BST on first, to give it a few extra microseconds to spin up
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BST_ENABLE_PORT |= (1 << BST_ENABLE_PIN); |
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// pre-load ramp data so it can be assigned faster later
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PWM_DATATYPE dac_lvl = PWM_GET(pwm1_levels, level); |
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PWM_DATATYPE dac_vref = PWM_GET(pwm_tops, level); |
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// enable HDR on top half of ramp
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if (level >= (HDR_ENABLE_LEVEL_MIN-1)) |
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HDR_ENABLE_PORT |= (1 << HDR_ENABLE_PIN); |
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else
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HDR_ENABLE_PORT &= ~(1 << HDR_ENABLE_PIN); |
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// set these in successive clock cycles to avoid getting out of sync
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// (minimizes ramp bumps when changing gears)
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DAC_LVL = dac_lvl; |
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DAC_VREF = dac_vref; |
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if (noflash) { |
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// wait for flash prevention to finish
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delay_4ms(IN_NFET_DELAY_TIME/4); |
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IN_NFET_ENABLE_PORT &= ~(1 << IN_NFET_ENABLE_PIN); |
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}
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}
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bool gradual_tick_main(uint8_t gt) { |
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// if HDR and Vref "engine gear" is the same, do a small adjustment...
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// otherwise, simply jump to the next ramp level
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// and let set_level() handle any gear changes
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PWM_DATATYPE dac_next = PWM_GET(pwm1_levels, gt); |
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PWM_DATATYPE vref_next = PWM_GET(pwm_tops, gt); |
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// different gear = full adjustment
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if (vref_next != DAC_VREF) return true; // let parent set_level() for us |
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// same gear = small adjustment
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GRADUAL_ADJUST_SIMPLE(dac_next, DAC_LVL); |
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if (dac_next == DAC_LVL) return true; // done |
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return false; // not done yet |
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}
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