99 lines
3.2 KiB
C++
99 lines
3.2 KiB
C++
/**
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* Marlin 3D Printer Firmware
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* Copyright (c) 2020 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 <https://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(DUET_SMART_EFFECTOR) && PIN_EXISTS(SMART_EFFECTOR_MOD)
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#include "../gcode.h"
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#include "../../HAL/shared/Delay.h"
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#include "../parser.h"
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/**
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* The Marlin format for the M672 command is different than shown in the Duet Smart Effector
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* documentation https://duet3d.dozuki.com/Wiki/Smart_effector_and_carriage_adapters_for_delta_printer
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*
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* To set custom sensitivity:
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* Duet: M672 S105:aaa:bbb
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* Marlin: M672 Saaa
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*
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* (where aaa is the desired sensitivity and bbb is 255 - aaa).
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*
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* Revert sensitivity to factory settings:
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* Duet: M672 S105:131:131
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* Marlin: M672 R
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*/
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#define M672_PROGBYTE 105 // magic byte to start programming custom sensitivity
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#define M672_ERASEBYTE 131 // magic byte to clear custom sensitivity
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//
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// Smart Effector byte send protocol:
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//
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// 0 0 1 0 ... always 0010
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// b7 b6 b5 b4 ~b4 ... hi bits, NOT last bit
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// b3 b2 b1 b0 ~b0 ... lo bits, NOT last bit
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//
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void M672_send(uint8_t b) { // bit rate requirement: 1KHz +/- 30%
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LOOP_L_N(bits, 14) {
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switch (bits) {
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default: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, !!(b & 0x80)); b <<= 1; break; } // send bit, shift next into place
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case 7:
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case 12: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, !!(b & 0x80)); break; } // send bit. no shift
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case 8:
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case 13: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, !(b & 0x80)); b <<= 1; break; } // send inverted previous bit
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case 0: case 1: // 00
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case 3: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, LOW); break; } // 0010
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case 2: { OUT_WRITE(SMART_EFFECTOR_MOD_PIN, HIGH); break; } // 001
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}
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DELAY_US(1000);
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}
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}
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/**
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* M672 - Set/reset Duet Smart Effector sensitivity
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*
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* One of these is required:
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* S<sensitivity> - 0-255
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* R - Flag to reset sensitivity to default
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*/
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void GcodeSuite::M672() {
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if (parser.seen('R')) {
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M672_send(M672_ERASEBYTE);
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M672_send(M672_ERASEBYTE);
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}
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else if (parser.seenval('S')) {
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const int8_t M672_sensitivity = parser.value_byte();
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M672_send(M672_PROGBYTE);
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M672_send(M672_sensitivity);
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M672_send(255 - M672_sensitivity);
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}
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else {
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SERIAL_ECHO_MSG("!'S' or 'R' parameter required.");
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return;
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}
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OUT_WRITE(SMART_EFFECTOR_MOD_PIN, LOW); // Keep Smart Effector in NORMAL mode
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}
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#endif // DUET_SMART_EFFECTOR && SMART_EFFECTOR_MOD_PIN
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