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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
*
* 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 <https://www.gnu.org/licenses/>.
*
*/
#include "../inc/MarlinConfig.h"
#if ENABLED(MIXING_EXTRUDER)
//#define MIXER_NORMALIZER_DEBUG
#include "mixing.h"
Mixer mixer;
#ifdef MIXER_NORMALIZER_DEBUG
#include "../core/serial.h"
#endif
// 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];
// 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 EITHER(HAS_DUAL_MIXING, GRADIENT_MIX)
mixer_perc_t Mixer::mix[MIXING_STEPPERS];
#endif
void Mixer::normalize(const uint8_t tool_index) {
float cmax = 0;
#ifdef MIXER_NORMALIZER_DEBUG
float csum = 0;
#endif
MIXER_STEPPER_LOOP(i) {
const float v = collector[i];
NOLESS(cmax, v);
#ifdef MIXER_NORMALIZER_DEBUG
csum += v;
#endif
}
#ifdef MIXER_NORMALIZER_DEBUG
SERIAL_ECHOPGM("Mixer: Old relation : [ ");
MIXER_STEPPER_LOOP(i) {
SERIAL_ECHO_F(collector[i] / csum, 3);
SERIAL_CHAR(' ');
}
SERIAL_ECHOLNPGM("]");
#endif
// 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;
#ifdef MIXER_NORMALIZER_DEBUG
csum = 0;
SERIAL_ECHOPGM("Mixer: Normalize to : [ ");
MIXER_STEPPER_LOOP(i) {
SERIAL_ECHO(uint16_t(color[tool_index][i]));
SERIAL_CHAR(' ');
csum += color[tool_index][i];
}
SERIAL_ECHOLNPGM("]");
SERIAL_ECHOPGM("Mixer: New relation : [ ");
MIXER_STEPPER_LOOP(i) {
SERIAL_ECHO_F(uint16_t(color[tool_index][i]) / csum, 3);
SERIAL_CHAR(' ');
}
SERIAL_ECHOLNPGM("]");
#endif
TERN_(GRADIENT_MIX, refresh_gradient());
}
void Mixer::reset_vtools() {
// Virtual Tools 0, 1, 2, 3 = Filament 1, 2, 3, 4, etc.
// Every virtual tool gets a pure filament
LOOP_L_N(t, _MIN(MIXING_VIRTUAL_TOOLS, MIXING_STEPPERS))
MIXER_STEPPER_LOOP(i)
color[t][i] = (t == i) ? COLOR_A_MASK : 0;
// Remaining virtual tools are 100% filament 1
#if MIXING_VIRTUAL_TOOLS > MIXING_STEPPERS
LOOP_S_L_N(t, MIXING_STEPPERS, MIXING_VIRTUAL_TOOLS)
MIXER_STEPPER_LOOP(i)
color[t][i] = (i == 0) ? COLOR_A_MASK : 0;
#endif
}
// called at boot
void Mixer::init() {
reset_vtools();
#if HAS_MIXER_SYNC_CHANNEL
// AUTORETRACT_TOOL gets the same amount of all filaments
MIXER_STEPPER_LOOP(i)
color[MIXER_AUTORETRACT_TOOL][i] = COLOR_A_MASK;
#endif
ZERO(collector);
#if EITHER(HAS_DUAL_MIXING, GRADIENT_MIX)
update_mix_from_vtool();
#endif
TERN_(GRADIENT_MIX, update_gradient_for_planner_z());
}
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() {
#if ENABLED(DELTA)
get_cartesian_from_steppers();
update_gradient_for_z(cartes.z);
#else
update_gradient_for_z(planner.get_axis_position_mm(Z_AXIS));
#endif
}
#endif // GRADIENT_MIX
#endif // MIXING_EXTRUDER
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