57 lines
1.8 KiB
C++
57 lines
1.8 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 "Marlin.h"
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#if HAS_BUZZER
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#include "buzzer.h"
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#include "ultralcd.h"
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void buzz(long duration, uint16_t freq) {
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if (freq > 0) {
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#if ENABLED(LCD_USE_I2C_BUZZER)
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lcd_buzz(duration, freq);
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#elif PIN_EXISTS(BEEPER) // on-board buzzers have no further condition
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SET_OUTPUT(BEEPER_PIN);
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#if ENABLED(SPEAKER) // a speaker needs a AC ore a pulsed DC
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//tone(BEEPER_PIN, freq, duration); // needs a PWMable pin
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unsigned int delay = 1000000 / freq / 2;
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int i = duration * freq / 1000;
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while (i--) {
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WRITE(BEEPER_PIN, HIGH);
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delayMicroseconds(delay);
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WRITE(BEEPER_PIN, LOW);
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delayMicroseconds(delay);
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}
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#else // buzzer has its own resonator - needs a DC
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WRITE(BEEPER_PIN, HIGH);
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delay(duration);
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WRITE(BEEPER_PIN, LOW);
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#endif
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#else
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delay(duration);
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#endif
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}
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else {
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delay(duration);
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}
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}
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#endif
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