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Rack/plugins/community/repos/AudibleInstruments/eurorack/braids/drivers/dac.h

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  1. // Copyright 2012 Olivier Gillet.

  2. //

  3. // Author: Olivier Gillet (ol.gillet@gmail.com)

  4. //

  5. // Permission is hereby granted, free of charge, to any person obtaining a copy

  6. // of this software and associated documentation files (the "Software"), to deal

  7. // in the Software without restriction, including without limitation the rights

  8. // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

  9. // copies of the Software, and to permit persons to whom the Software is

  10. // furnished to do so, subject to the following conditions:

  11. // 

  12. // The above copyright notice and this permission notice shall be included in

  13. // all copies or substantial portions of the Software.

  14. // 

  15. // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

  16. // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

  17. // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

  18. // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

  19. // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

  20. // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

  21. // THE SOFTWARE.

  22. // 

  23. // See http://creativecommons.org/licenses/MIT/ for more information.

  24. //

  25. // -----------------------------------------------------------------------------

  26. //

  27. // Driver for DAC.

  28. 

  29. #ifndef BRAIDS_DRIVERS_DAC_H_

  30. #define BRAIDS_DRIVERS_DAC_H_

  31. 

  32. #include <stm32f10x_conf.h>

  33. #include "stmlib/stmlib.h"

  34. 

  35. namespace braids {

  36. 

  37. class Dac {

  38.  public:

  39.   Dac() { }

  40.   ~Dac() { }

  41.   

  42.   void Init();

  43.   inline void Write(uint16_t value) {

  44.     GPIOB->BSRR = GPIO_Pin_12;

  45.     GPIOB->BRR = GPIO_Pin_12;

  46.     SPI2->DR = value >> 8;

  47.     __asm__("nop");

  48.     __asm__("nop");

  49.     __asm__("nop");

  50.     __asm__("nop");

  51.     __asm__("nop");

  52.     __asm__("nop");

  53.     __asm__("nop");

  54.     __asm__("nop");

  55.     __asm__("nop");

  56.     __asm__("nop");

  57.     __asm__("nop");

  58.     __asm__("nop");

  59.     __asm__("nop");

  60.     __asm__("nop");

  61.     __asm__("nop");

  62.     __asm__("nop");

  63.     SPI2->DR = value << 8;

  64.   }

  65.  

  66.  private:

  67.   

  68.   DISALLOW_COPY_AND_ASSIGN(Dac);

  69. };

  70. 

  71. }  // namespace braids

  72. 

  73. #endif  // BRAIDS_DRIVERS_DAC_H_