reorganized project files (part 1)

(just moved files, didn't change the contents yet,
 and nothing will work without updating #includes and build scripts and stuff)

1 files changed, 210 insertions, 0 deletions

diff --git a/hw/sofirn/blf-lt1-t1616/hwdef.c b/hw/sofirn/blf-lt1-t1616/hwdef.c
new file mode 100644
index 0000000..9d268a4
--- /dev/null
+++ b/hw/sofirn/blf-lt1-t1616/hwdef.c
@@ -0,0 +1,210 @@
+// Sofirn LT1-t1616 PWM helpers
+// Copyright (C) 2023 SiteRelEnby, Selene ToyKeeper
+// SPDX-License-Identifier: GPL-3.0-or-later
+#pragma once
+
+#include "chan-aux.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
+    },
+    AUX_CHANNELS
+};
+
+
+void set_level_zero() {
+    // disable timer overflow interrupt
+    // (helps improve button press handling from Off state)
+    DSM_INTCTRL = 0;
+
+    // turn off all LEDs
+    ch1_dsm_lvl = 0;
+    ch2_dsm_lvl = 0;
+    CH1_PWM     = 0;
+    CH2_PWM     = 0;
+    PWM_CNT     = 0;
+}
+
+void set_hw_levels(PWM_DATATYPE ch1, PWM_DATATYPE ch2) {
+
+    bool was_on = (CH1_PWM>0) || (CH2_PWM>0);
+
+    // 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;
+
+    // enable timer overflow interrupt so DSM can work
+    DSM_INTCTRL = DSM_OVF_bm;
+
+    // reset phase when turning on
+    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;
+
+    // clear the interrupt flag to indicate it was handled
+    // as per: https://onlinedocs.microchip.com/pr/GUID-C37FFBA8-82C6-4339-A2B1-ABD9A0F6C162-en-US-8/index.html?GUID-C2A2BEFD-158F-413D-B9D4-0F0556AA79BD
+    DSM_INTFLAGS = DSM_OVF_bm;
+}
+
+
+void set_level_ch1(uint8_t level) {
+    set_hw_levels(PWM_GET(pwm1_levels, level), 0);
+}
+
+void set_level_ch2(uint8_t level) {
+    set_hw_levels(0, PWM_GET(pwm1_levels, level));
+}
+
+void set_level_both(uint8_t level) {
+    PWM_DATATYPE pwm = PWM_GET(pwm1_levels, level);
+    set_hw_levels(pwm, pwm);
+}
+
+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;
+    blend_helper(&warm, &cool, level);
+    set_hw_levels(warm, cool);
+}
+
+void set_level_auto(uint8_t level) {
+    PWM_DATATYPE warm, cool;
+    blend_helper(&warm, &cool, level);
+    set_hw_levels(warm, cool);
+}
+
+///// "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);
+}
+
+