128 lines
3.1 KiB
C++
128 lines
3.1 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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#ifndef __BUZZER_H__
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#define __BUZZER_H__
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#include "../inc/MarlinConfig.h"
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// Make a buzzer and macro
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#if ENABLED(LCD_USE_I2C_BUZZER)
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// BUZZ() will be defined in ultralcd.h
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#elif PIN_EXISTS(BEEPER)
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#include "circularqueue.h"
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#define TONE_QUEUE_LENGTH 4
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/**
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* @brief Tone structure
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* @details Simple abstraction of a tone based on a duration and a frequency.
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*/
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struct tone_t {
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uint16_t duration;
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uint16_t frequency;
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};
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/**
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* @brief Buzzer class
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*/
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class Buzzer {
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public:
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typedef struct {
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tone_t tone;
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uint32_t endtime;
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} state_t;
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private:
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static state_t state;
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protected:
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static CircularQueue<tone_t, TONE_QUEUE_LENGTH> buffer;
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/**
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* @brief Inverts the sate of a digital PIN
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* @details This will invert the current state of an digital IO pin.
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*/
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FORCE_INLINE static void invert() { TOGGLE(BEEPER_PIN); }
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/**
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* @brief Turn off a digital PIN
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* @details Alias of digitalWrite(PIN, LOW) using FastIO
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*/
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FORCE_INLINE static void off() { WRITE(BEEPER_PIN, LOW); }
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/**
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* @brief Turn on a digital PIN
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* @details Alias of digitalWrite(PIN, HIGH) using FastIO
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*/
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FORCE_INLINE static void on() { WRITE(BEEPER_PIN, HIGH); }
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/**
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* @brief Resets the state of the class
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* @details Brings the class state to a known one.
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*/
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inline static void reset() {
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off();
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state.endtime = 0;
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}
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public:
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/**
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* @brief Class constructor
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*/
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Buzzer() {
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SET_OUTPUT(BEEPER_PIN);
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reset();
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}
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/**
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* @brief Add a tone to the queue
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* @details Adds a tone_t structure to the ring buffer, will block IO if the
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* queue is full waiting for one slot to get available.
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*
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* @param duration Duration of the tone in milliseconds
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* @param frequency Frequency of the tone in hertz
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*/
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static void tone(const uint16_t duration, const uint16_t frequency=0);
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/**
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* @brief Tick function
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* @details This function should be called at loop, it will take care of
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* playing the tones in the queue.
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*/
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static void tick();
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};
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// Provide a buzzer instance
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extern Buzzer buzzer;
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#define BUZZ(d,f) buzzer.tone(d, f)
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#else // No buzz capability
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#define BUZZ(d,f) NOOP
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#endif
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#endif
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