64 lines
2.4 KiB
C++
64 lines
2.4 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 HAS_CASE_LIGHT
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uint8_t case_light_brightness = CASE_LIGHT_DEFAULT_BRIGHTNESS;
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bool case_light_on = CASE_LIGHT_DEFAULT_ON;
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/**
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* The following are needed because ARM chips ignore a "WRITE(CASE_LIGHT_PIN,x)" command to the pins that
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* are directly controlled by the PWM module. In order to turn them off the brightness level needs to be
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* set to off. Since we can't use the pwm register to save the last brightness level we need a variable
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* to save it.
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*/
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uint8_t case_light_brightness_sav; // saves brighness info so can restore when "M355 S1" received
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bool case_light_arg_flag; // flag to notify if S or P arguement type
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#ifndef INVERT_CASE_LIGHT
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#define INVERT_CASE_LIGHT false
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#endif
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void update_case_light() {
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SET_OUTPUT(CASE_LIGHT_PIN);
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if (!(case_light_arg_flag && !case_light_on))
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case_light_brightness_sav = case_light_brightness; // save brightness except if this is an S0 arguement
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if (case_light_arg_flag && case_light_on)
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case_light_brightness = case_light_brightness_sav; // restore last brightens if this is an S1 arguement
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if (case_light_on) {
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if (USEABLE_HARDWARE_PWM(CASE_LIGHT_PIN)) {
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analogWrite(CASE_LIGHT_PIN, INVERT_CASE_LIGHT ? 255 - case_light_brightness : case_light_brightness );
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}
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else WRITE(CASE_LIGHT_PIN, INVERT_CASE_LIGHT ? LOW : HIGH);
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}
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else {
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if (USEABLE_HARDWARE_PWM(CASE_LIGHT_PIN))
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analogWrite(CASE_LIGHT_PIN, INVERT_CASE_LIGHT ? 255 : 0 ); // turn the light off
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WRITE(CASE_LIGHT_PIN, INVERT_CASE_LIGHT ? HIGH : LOW);
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}
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}
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#endif // HAS_CASE_LIGHT
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