84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
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*
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* Based on Sprinter and grbl.
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* Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include "../inc/MarlinConfig.h"
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#if ENABLED(MIXING_EXTRUDER)
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#if ENABLED(DIRECT_MIXING_IN_G1)
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#include "../gcode/parser.h"
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#endif
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float mixing_factor[MIXING_STEPPERS]; // Reciprocal of mix proportion. 0.0 = off, otherwise >= 1.0.
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#if MIXING_VIRTUAL_TOOLS > 1
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float mixing_virtual_tool_mix[MIXING_VIRTUAL_TOOLS][MIXING_STEPPERS];
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void mixing_tools_init() {
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// Initialize mixing to 100% color 1
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++)
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mixing_factor[i] = (i == 0) ? 1.0 : 0.0;
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for (uint8_t t = 0; t < MIXING_VIRTUAL_TOOLS; t++)
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++)
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mixing_virtual_tool_mix[t][i] = mixing_factor[i];
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}
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#endif // MIXING_VIRTUAL_TOOLS > 1
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void normalize_mix() {
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float mix_total = 0.0;
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++) mix_total += RECIPROCAL(mixing_factor[i]);
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// Scale all values if they don't add up to ~1.0
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if (!NEAR(mix_total, 1.0)) {
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SERIAL_PROTOCOLLNPGM("Warning: Mix factors must add up to 1.0. Scaling.");
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++) mixing_factor[i] *= mix_total;
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}
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}
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#if ENABLED(DIRECT_MIXING_IN_G1)
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// Get mixing parameters from the GCode
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// The total "must" be 1.0 (but it will be normalized)
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// If no mix factors are given, the old mix is preserved
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void gcode_get_mix() {
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const char mixing_codes[] = { 'A', 'B', 'C', 'D', 'H', 'I' };
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byte mix_bits = 0;
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++) {
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if (parser.seenval(mixing_codes[i])) {
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SBI(mix_bits, i);
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float v = parser.value_float();
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NOLESS(v, 0.0);
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mixing_factor[i] = RECIPROCAL(v);
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}
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}
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// If any mixing factors were included, clear the rest
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// If none were included, preserve the last mix
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if (mix_bits) {
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for (uint8_t i = 0; i < MIXING_STEPPERS; i++)
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if (!TEST(mix_bits, i)) mixing_factor[i] = 0.0;
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normalize_mix();
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}
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}
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#endif
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#endif // MIXING_EXTRUDER
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