Merge pull request #4456 from jbrazio/speaker-type3

Improvement to non-blocking speaker

Marlin/Marlin.h

@@ -385,13 +385,8 @@ void calculate_volumetric_multipliers();
 
 // Buzzer
 #if HAS_BUZZER
-  #if ENABLED(SPEAKER)
+  #include "buzzer.h"
-    #include "speaker.h"
+  extern Buzzer buzzer;
-    extern Speaker buzzer;
-  #else
-    #include "buzzer.h"
-    extern Buzzer buzzer;
-  #endif
 #endif
 
 /**

Marlin/Marlin_main.cpp

@@ -375,11 +375,7 @@ static millis_t stepper_inactive_time = (DEFAULT_STEPPER_DEACTIVE_TIME) * 1000UL
 
 // Buzzer
 #if HAS_BUZZER
-  #if ENABLED(SPEAKER)
-    Speaker buzzer;
-  #else
     Buzzer buzzer;
-  #endif
 #endif
 
 static uint8_t target_extruder;

Marlin/buzzer.h

@@ -32,7 +32,6 @@
 /**
  * @brief Tone structure
  * @details Simple abstraction of a tone based on a duration and a frequency.
- *
  */
 struct tone_t {
   uint16_t duration;
@@ -116,14 +115,23 @@ class Buzzer {
      *          playing the tones in the queue.
      */
     virtual void tick() {
+      const millis_t now = millis();
+
       if (!this->state.endtime) {
         if (this->buffer.isEmpty()) return;
 
         this->state.tone = this->buffer.dequeue();
-        this->state.endtime = millis() + this->state.tone.duration;
+        this->state.endtime = now + this->state.tone.duration;
-        if (this->state.tone.frequency > 0) this->on();
+
+        if (this->state.tone.frequency > 0) {
+          #if ENABLED(SPEAKER)
+            ::tone(BEEPER_PIN, this->state.tone.frequency, this->state.tone.duration);
+          #else
+            this->on();
+          #endif
+        }
       }
-      else if (ELAPSED(millis(), this->state.endtime)) this->reset();
+      else if (ELAPSED(now, this->state.endtime)) this->reset();
     }
 };
 

Marlin/speaker.h

@@ -1,90 +0,0 @@
-/**
- * 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/>.
- *
- */
-
-#ifndef __SPEAKER_H__
-#define __SPEAKER_H__
-
-#include "buzzer.h"
-
-class Speaker: public Buzzer {
-  private:
-    typedef Buzzer super;
-
-    struct state_t {
-      tone_t   tone;
-      uint16_t period;
-      uint16_t counter;
-    } state;
-
-  protected:
-    /**
-     * @brief Resets the state of the class
-     * @details Brings the class state to a known one.
-     */
-    void reset() {
-      super::reset();
-      this->state.period = 0;
-      this->state.counter = 0;
-    }
-
-  public:
-    /**
-     * @brief Class constructor
-     */
-    Speaker() {
-      this->reset();
-    }
-
-    /**
-     * @brief Loop function
-     * @details This function should be called at loop, it will take care of
-     * playing the tones in the queue.
-     */
-    virtual void tick() {
-      if (!this->state.counter) {
-        if (this->buffer.isEmpty()) return;
-
-        this->reset();
-        this->state.tone = this->buffer.dequeue();
-
-        // Period is uint16, min frequency will be ~16Hz
-        this->state.period = 1000000UL / this->state.tone.frequency;
-
-        this->state.counter =
-          (this->state.tone.duration * 1000L) / this->state.period;
-
-        this->state.period   >>= 1;
-        this->state.counter <<= 1;
-      } else {
-        const  uint32_t  now = micros();
-        static uint32_t next = now + this->state.period;
-
-        if (now >= next) {
-          --this->state.counter;
-          next = now + this->state.period;
-          if (this->state.tone.frequency > 0) this->invert();
-        }
-      }
-    }
-};
-
-#endif