text: // Copyright 2012 Olivier Gillet.
  //
  // Author: Olivier Gillet (pichenettes@mutable-instruments.net)
  //
  // Permission is hereby granted, free of charge, to any person obtaining a copy
  // of this software and associated documentation files (the "Software"), to deal
  // in the Software without restriction, including without limitation the rights
  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
  // copies of the Software, and to permit persons to whom the Software is
  // furnished to do so, subject to the following conditions:
  // 
  // The above copyright notice and this permission notice shall be included in
  // all copies or substantial portions of the Software.
  // 
  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  // THE SOFTWARE.
  // 
  // See http://creativecommons.org/licenses/MIT/ for more information.
  //
  // -----------------------------------------------------------------------------
  //
  // Driver for DAC.
  
  #ifndef BRAIDS_DRIVERS_DAC_H_
  #define BRAIDS_DRIVERS_DAC_H_
  
  #include <stm32f10x_conf.h>
  #include "stmlib/stmlib.h"
  
  namespace braids {
  
  class Dac {
   public:
    Dac() { }
    ~Dac() { }
    
    void Init();
    inline void Write(uint16_t value) {
      GPIOB->BSRR = GPIO_Pin_12;
      GPIOB->BRR = GPIO_Pin_12;
      SPI2->DR = value >> 8;
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      __asm__("nop");
      SPI2->DR = value << 8;
    }
   
   private:
    
    DISALLOW_COPY_AND_ASSIGN(Dac);
  };
  
  }  // namespace braids
  
  #endif  // BRAIDS_DRIVERS_DAC_H_
  