Marlin 2.0 for Flying Bear 4S/5
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/**
* Marlin 3D Printer Firmware
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
*
*/
#include "Marlin.h"
#if HAS_BUZZER
#include "buzzer.h"
#include "ultralcd.h"
void buzz(long duration, uint16_t freq) {
if (freq > 0) {
#if ENABLED(LCD_USE_I2C_BUZZER)
lcd_buzz(duration, freq);
#elif PIN_EXISTS(BEEPER) // on-board buzzers have no further condition
SET_OUTPUT(BEEPER_PIN);
#if ENABLED(SPEAKER) // a speaker needs a AC ore a pulsed DC
//tone(BEEPER_PIN, freq, duration); // needs a PWMable pin
unsigned int delay = 1000000 / freq / 2;
int i = duration * freq / 1000;
while (i--) {
WRITE(BEEPER_PIN, HIGH);
delayMicroseconds(delay);
WRITE(BEEPER_PIN, LOW);
delayMicroseconds(delay);
}
#else // buzzer has its own resonator - needs a DC
WRITE(BEEPER_PIN, HIGH);
delay(duration);
WRITE(BEEPER_PIN, LOW);
#endif
#else
delay(duration);
#endif
}
else {
delay(duration);
}
}
#endif