mirror of
https://github.com/MarlinFirmware/Marlin.git
synced 2026-01-16 21:05:33 -07:00
116 lines
3.4 KiB
C++
116 lines
3.4 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(DIRECT_PIN_CONTROL)
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#include "../gcode.h"
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#if HAS_FAN
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#include "../../module/temperature.h"
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#endif
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#ifdef MAPLE_STM32F1
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// these are enums on the F1...
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#define INPUT_PULLDOWN INPUT_PULLDOWN
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#define INPUT_ANALOG INPUT_ANALOG
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#define OUTPUT_OPEN_DRAIN OUTPUT_OPEN_DRAIN
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#endif
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bool pin_is_protected(const pin_t pin);
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void protected_pin_err() {
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SERIAL_ERROR_MSG(STR_ERR_PROTECTED_PIN);
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}
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/**
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* M42: Change pin status via G-Code
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*
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* Parameters:
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* P<pin> Pin number (LED if omitted)
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* For LPC1768 specify pin P1_02 as M42 P102,
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* P1_20 as M42 P120, etc.
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*
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* S<byte> Pin status from 0-255
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* I Flag to ignore Marlin's pin protection
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*
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* T<mode> Pin mode: 0=INPUT | 1=OUTPUT | 2=INPUT_PULLUP | 3=INPUT_PULLDOWN
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* 4=INPUT_ANALOG | 5=OUTPUT_OPEN_DRAIN
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*/
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void GcodeSuite::M42() {
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const int pin_index = PARSED_PIN_INDEX('P', GET_PIN_MAP_INDEX(LED_PIN));
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if (pin_index < 0) return;
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const pin_t pin = GET_PIN_MAP_PIN(pin_index);
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if (!parser.boolval('I') && pin_is_protected(pin)) return protected_pin_err();
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bool avoidWrite = false;
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if (parser.seenval('T')) {
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switch (parser.value_byte()) {
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case 0: pinMode(pin, INPUT); avoidWrite = true; break;
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case 1: pinMode(pin, OUTPUT); break;
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case 2: pinMode(pin, INPUT_PULLUP); avoidWrite = true; break;
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#ifdef INPUT_PULLDOWN
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case 3: pinMode(pin, INPUT_PULLDOWN); avoidWrite = true; break;
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#endif
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#ifdef INPUT_ANALOG
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case 4: pinMode(pin, INPUT_ANALOG); avoidWrite = true; break;
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#endif
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#ifdef OUTPUT_OPEN_DRAIN
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case 5: pinMode(pin, OUTPUT_OPEN_DRAIN); break;
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#endif
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default: SERIAL_ECHOLNPGM(GCODE_ERR_MSG("Invalid Pin Mode")); return;
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}
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}
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if (!parser.seenval('S')) return;
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const byte pin_status = parser.value_byte();
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#if HAS_FAN
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switch (pin) {
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#define _CASE(N) case FAN##N##_PIN: thermalManager.fan_speed[N] = pin_status; return;
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REPEAT(FAN_COUNT, _CASE)
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}
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#endif
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if (avoidWrite) {
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SERIAL_ECHOLNPGM(GCODE_ERR_MSG("Cannot write to INPUT"));
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return;
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}
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// An OUTPUT_OPEN_DRAIN should not be changed to normal OUTPUT (STM32)
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// Use M42 Px T1/5 S0/1 to set the output type and then set value
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#ifndef OUTPUT_OPEN_DRAIN
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pinMode(pin, OUTPUT);
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#endif
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extDigitalWrite(pin, pin_status);
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#ifdef ARDUINO_ARCH_STM32
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// A simple I/O will be set to 0 by hal.set_pwm_duty()
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if (pin_status <= 1 && !PWM_PIN(pin)) return;
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#endif
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hal.set_pwm_duty(pin, pin_status);
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}
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#endif // DIRECT_PIN_CONTROL
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