My Marlin configs for Fabrikator Mini and CTC i3 Pro B
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speaker.h 2.3KB

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  1. /**
  2. * Marlin 3D Printer Firmware
  3. * Copyright (C) 2016 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
  4. *
  5. * Based on Sprinter and grbl.
  6. * Copyright (C) 2011 Camiel Gubbels / Erik van der Zalm
  7. *
  8. * This program is free software: you can redistribute it and/or modify
  9. * it under the terms of the GNU General Public License as published by
  10. * the Free Software Foundation, either version 3 of the License, or
  11. * (at your option) any later version.
  12. *
  13. * This program is distributed in the hope that it will be useful,
  14. * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15. * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  16. * GNU General Public License for more details.
  17. *
  18. * You should have received a copy of the GNU General Public License
  19. * along with this program. If not, see <http://www.gnu.org/licenses/>.
  20. *
  21. */
  22. #ifndef __SPEAKER_H__
  23. #define __SPEAKER_H__
  24. #include "buzzer.h"
  25. class Speaker: public Buzzer {
  26. private:
  27. typedef Buzzer super;
  28. struct state_t {
  29. tone_t tone;
  30. uint16_t period;
  31. uint16_t cycles;
  32. } state;
  33. protected:
  34. /**
  35. * @brief Resets the state of the class
  36. * @details Brings the class state to a known one.
  37. */
  38. void reset() {
  39. super::reset();
  40. this->state.period = 0;
  41. this->state.cycles = 0;
  42. }
  43. public:
  44. /**
  45. * @brief Class constructor
  46. */
  47. Speaker() {
  48. this->reset();
  49. }
  50. /**
  51. * @brief Loop function
  52. * @details This function should be called at loop, it will take care of
  53. * playing the tones in the queue.
  54. */
  55. virtual void tick() {
  56. if (!this->state.cycles) {
  57. if (this->buffer.isEmpty()) return;
  58. this->reset();
  59. this->state.tone = this->buffer.dequeue();
  60. // Period is uint16, min frequency will be ~16Hz
  61. this->state.period = 1000000UL / this->state.tone.frequency;
  62. this->state.cycles =
  63. (this->state.tone.duration * 1000L) / this->state.period;
  64. this->state.period >>= 1;
  65. this->state.cycles <<= 1;
  66. }
  67. else {
  68. uint32_t const us = micros();
  69. static uint32_t next = us + this->state.period;
  70. if (us >= next) {
  71. --this->state.cycles;
  72. next = us + this->state.period;
  73. if (this->state.tone.frequency > 0) this->invert();
  74. }
  75. }
  76. }
  77. };
  78. #endif