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/**
* Marlin 3D Printer Firmware
* Copyright (c) 2020 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 <https://www.gnu.org/licenses/>.
*
*/
#pragma once
#include "../inc/MarlinConfig.h"
#if USE_BEEPER
#include "circularqueue.h"
#define TONE_QUEUE_LENGTH 4
/**
* @brief Tone structure
* @details Simple abstraction of a tone based on a duration and a frequency.
*/
struct tone_t {
uint16_t duration;
uint16_t frequency;
};
/**
* @brief Buzzer class
*/
class Buzzer {
public:
typedef struct {
tone_t tone;
uint32_t endtime;
} state_t;
private:
static state_t state;
protected:
static CircularQueue<tone_t, TONE_QUEUE_LENGTH> buffer;
/**
* @brief Inverts the sate of a digital PIN
* @details This will invert the current state of an digital IO pin.
*/
FORCE_INLINE static void invert() { TOGGLE(BEEPER_PIN); }
/**
* @brief Turn off a digital PIN
* @details Alias of digitalWrite(PIN, LOW) using FastIO
*/
FORCE_INLINE static void off() { WRITE(BEEPER_PIN, LOW); }
/**
* @brief Turn on a digital PIN
* @details Alias of digitalWrite(PIN, HIGH) using FastIO
*/
FORCE_INLINE static void on() { WRITE(BEEPER_PIN, HIGH); }
/**
* @brief Resets the state of the class
* @details Brings the class state to a known one.
*/
static inline void reset() {
off();
state.endtime = 0;
}
public:
/**
* @brief Init Buzzer
*/
static inline void init() {
SET_OUTPUT(BEEPER_PIN);
reset();
}
/**
* @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
*/
static void tone(const uint16_t duration, const uint16_t frequency=0);
/**
* @brief Tick function
* @details This function should be called at loop, it will take care of
* playing the tones in the queue.
*/
static void tick();
};
// Provide a buzzer instance
extern Buzzer buzzer;
// Buzz directly via the BEEPER pin tone queue
#define BUZZ(d,f) buzzer.tone(d, f)
#elif HAS_BUZZER
// Buzz indirectly via the MarlinUI instance
#include "../lcd/marlinui.h"
#define BUZZ(d,f) ui.buzz(d,f)
#else
// No buzz capability
#define BUZZ(d,f) NOOP
#endif
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