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