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 "../inc/MarlinConfig.h"
#if DISABLED(LCD_USE_I2C_BUZZER) && PIN_EXISTS(BEEPER)
#include "buzzer.h"
#include "../module/temperature.h"
Buzzer::state_t Buzzer::state;
CircularQueue<tone_t, TONE_QUEUE_LENGTH> Buzzer::buffer;
Buzzer buzzer;
/**
* @brief Add a tone to the queue
* @details Adds a tone_t structure to the ring buffer, will block IO if the
* queue is full waiting for one slot to get available.
*
* @param duration Duration of the tone in milliseconds
* @param frequency Frequency of the tone in hertz
*/
void Buzzer::tone(const uint16_t duration, const uint16_t frequency/*=0*/) {
while (buffer.isFull()) {
tick();
thermalManager.manage_heater();
}
tone_t tone = { duration, frequency };
buffer.enqueue(tone);
}
void Buzzer::tick() {
const millis_t now = millis();
if (!state.endtime) {
if (buffer.isEmpty()) return;
state.tone = buffer.dequeue();
state.endtime = now + state.tone.duration;
if (state.tone.frequency > 0) {
#if ENABLED(SPEAKER)
CRITICAL_SECTION_START;
::tone(BEEPER_PIN, state.tone.frequency, state.tone.duration);
CRITICAL_SECTION_END;
#else
on();
#endif
}
}
else if (ELAPSED(now, state.endtime)) reset();
}
#endif // !LCD_USE_I2C_BUZZER && BEEPER