input_i2s_quad.h 1.9KB

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  1. /* Audio Library for Teensy 3.X
  2. * Copyright (c) 2014, Paul Stoffregen, paul@pjrc.com
  3. *
  4. * Development of this audio library was funded by PJRC.COM, LLC by sales of
  5. * Teensy and Audio Adaptor boards. Please support PJRC's efforts to develop
  6. * open source software by purchasing Teensy or other PJRC products.
  7. *
  8. * Permission is hereby granted, free of charge, to any person obtaining a copy
  9. * of this software and associated documentation files (the "Software"), to deal
  10. * in the Software without restriction, including without limitation the rights
  11. * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  12. * copies of the Software, and to permit persons to whom the Software is
  13. * furnished to do so, subject to the following conditions:
  14. *
  15. * The above copyright notice, development funding notice, and this permission
  16. * notice shall be included in all copies or substantial portions of the Software.
  17. *
  18. * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19. * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20. * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  21. * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  22. * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  23. * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  24. * THE SOFTWARE.
  25. */
  26. #ifndef _input_i2s_quad_h_
  27. #define _input_i2s_quad_h_
  28. #include "Arduino.h"
  29. #include "AudioStream.h"
  30. #include "DMAChannel.h"
  31. class AudioInputI2SQuad : public AudioStream
  32. {
  33. public:
  34. AudioInputI2SQuad(void) : AudioStream(0, NULL) { begin(); }
  35. virtual void update(void);
  36. void begin(void);
  37. private:
  38. static bool update_responsibility;
  39. static DMAChannel dma;
  40. static void isr(void);
  41. static audio_block_t *block_ch1;
  42. static audio_block_t *block_ch2;
  43. static audio_block_t *block_ch3;
  44. static audio_block_t *block_ch4;
  45. static uint16_t block_offset;
  46. };
  47. #endif