Marlin_Firmware/Marlin/src/feature/mixing.cpp

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/**
* Marlin 3D Printer Firmware
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* Copyright (C) 2019 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
* Based on Sprinter and grbl.
* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
*
* 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/>.
*
*/
#include "../inc/MarlinConfig.h"
#if ENABLED(MIXING_EXTRUDER)
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//#define MIXER_NORMALIZER_DEBUG
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#include "mixing.h"
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Mixer mixer;
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#ifdef MIXER_NORMALIZER_DEBUG
#include "../core/serial.h"
#endif
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// Used up to Planner level
uint_fast8_t Mixer::selected_vtool = 0;
float Mixer::collector[MIXING_STEPPERS]; // mix proportion. 0.0 = off, otherwise <= COLOR_A_MASK.
mixer_comp_t Mixer::color[NR_MIXING_VIRTUAL_TOOLS][MIXING_STEPPERS];
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// Used in Stepper
int_fast8_t Mixer::runner = 0;
mixer_comp_t Mixer::s_color[MIXING_STEPPERS];
mixer_accu_t Mixer::accu[MIXING_STEPPERS] = { 0 };
#if DUAL_MIXING_EXTRUDER || ENABLED(GRADIENT_MIX)
mixer_perc_t Mixer::mix[MIXING_STEPPERS];
#endif
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void Mixer::normalize(const uint8_t tool_index) {
float cmax = 0;
#ifdef MIXER_NORMALIZER_DEBUG
float csum = 0;
#endif
MIXER_STEPPER_LOOP(i) {
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const float v = collector[i];
NOLESS(cmax, v);
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#ifdef MIXER_NORMALIZER_DEBUG
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csum += v;
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#endif
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}
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#ifdef MIXER_NORMALIZER_DEBUG
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SERIAL_ECHOPGM("Mixer: Old relation : [ ");
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MIXER_STEPPER_LOOP(i) {
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SERIAL_ECHO_F(collector[i] / csum, 3);
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SERIAL_CHAR(' ');
}
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SERIAL_ECHOLNPGM("]");
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#endif
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// Scale all values so their maximum is COLOR_A_MASK
const float scale = float(COLOR_A_MASK) / cmax;
MIXER_STEPPER_LOOP(i) color[tool_index][i] = collector[i] * scale;
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#ifdef MIXER_NORMALIZER_DEBUG
csum = 0;
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SERIAL_ECHOPGM("Mixer: Normalize to : [ ");
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MIXER_STEPPER_LOOP(i) {
SERIAL_ECHO(uint16_t(color[tool_index][i]));
SERIAL_CHAR(' ');
csum += color[tool_index][i];
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}
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SERIAL_ECHOLNPGM("]");
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SERIAL_ECHOPGM("Mixer: New relation : [ ");
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MIXER_STEPPER_LOOP(i) {
SERIAL_ECHO_F(uint16_t(color[tool_index][i]) / csum, 3);
SERIAL_CHAR(' ');
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}
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SERIAL_ECHOLNPGM("]");
#endif
#if ENABLED(GRADIENT_MIX)
refresh_gradient();
#endif
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}
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void Mixer::reset_vtools() {
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// Virtual Tools 0, 1, 2, 3 = Filament 1, 2, 3, 4, etc.
// Every virtual tool gets a pure filament
for (uint8_t t = 0; t < MIXING_VIRTUAL_TOOLS && t < MIXING_STEPPERS; t++)
MIXER_STEPPER_LOOP(i)
color[t][i] = (t == i) ? COLOR_A_MASK : 0;
// Remaining virtual tools are 100% filament 1
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#if MIXING_VIRTUAL_TOOLS > MIXING_STEPPERS
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for (uint8_t t = MIXING_STEPPERS; t < MIXING_VIRTUAL_TOOLS; t++)
MIXER_STEPPER_LOOP(i)
color[t][i] = (i == 0) ? COLOR_A_MASK : 0;
#endif
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}
// called at boot
void Mixer::init() {
reset_vtools();
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#if ENABLED(RETRACT_SYNC_MIXING)
// AUTORETRACT_TOOL gets the same amount of all filaments
MIXER_STEPPER_LOOP(i)
color[MIXER_AUTORETRACT_TOOL][i] = COLOR_A_MASK;
#endif
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ZERO(collector);
#if DUAL_MIXING_EXTRUDER || ENABLED(GRADIENT_MIX)
update_mix_from_vtool();
#endif
#if ENABLED(GRADIENT_MIX)
update_gradient_for_planner_z();
#endif
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}
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void Mixer::refresh_collector(const float proportion/*=1.0*/, const uint8_t t/*=selected_vtool*/, float (&c)[MIXING_STEPPERS]/*=collector*/) {
float csum = 0, cmax = 0;
MIXER_STEPPER_LOOP(i) {
const float v = color[t][i];
cmax = MAX(cmax, v);
csum += v;
}
//SERIAL_ECHOPAIR("Mixer::refresh_collector(", proportion, ", ", int(t), ") cmax=", cmax, " csum=", csum, " color");
const float inv_prop = proportion / csum;
MIXER_STEPPER_LOOP(i) {
c[i] = color[t][i] * inv_prop;
//SERIAL_ECHOPAIR(" [", int(t), "][", int(i), "] = ", int(color[t][i]), " (", c[i], ") ");
}
//SERIAL_EOL();
}
#if ENABLED(GRADIENT_MIX)
#include "../module/motion.h"
#include "../module/planner.h"
gradient_t Mixer::gradient = {
false, // enabled
{0}, // color (array)
0, 0, // start_z, end_z
0, 1, // start_vtool, end_vtool
{0}, {0} // start_mix[], end_mix[]
#if ENABLED(GRADIENT_VTOOL)
, -1 // vtool_index
#endif
};
float Mixer::prev_z; // = 0
void Mixer::update_gradient_for_z(const float z) {
if (z == prev_z) return;
prev_z = z;
const float slice = gradient.end_z - gradient.start_z;
float pct = (z - gradient.start_z) / slice;
NOLESS(pct, 0.0f); NOMORE(pct, 1.0f);
MIXER_STEPPER_LOOP(i) {
const mixer_perc_t sm = gradient.start_mix[i];
mix[i] = sm + (gradient.end_mix[i] - sm) * pct;
}
copy_mix_to_color(gradient.color);
}
void Mixer::update_gradient_for_planner_z() {
update_gradient_for_z(planner.get_axis_position_mm(Z_AXIS));
}
#endif // GRADIENT_MIX
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#endif // MIXING_EXTRUDER