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/*******************************************************************************
 * Copyright (C) 2016 Maxim Integrated Products, Inc., All Rights Reserved.
 *
 * 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
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 * and/or sell copies of the Software, and to permit persons to whom the
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 *
 * The above copyright notice and this permission notice shall be included
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 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 * OTHER DEALINGS IN THE SOFTWARE.
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 *
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 */
#ifndef _QUADSPI_H_
#define _QUADSPI_H_

#include "mbed.h"




/**
* This class provides a Quad SPI interface for quad spi devices
* the class also allows single (4-Wire) communication
*/
class QuadSPI : SPI {

public:
  /** Create a QuadSPI master connected to the specified pins
   *
   *  mosi or miso can be specfied as NC if not used
   *
   *  @param mosi QuadSPI Master Out, Slave In pin
   *  @param miso QuadSPI Master In, Slave Out pin
   *  @param sclk QuadSPI Clock pin
   *  @param ssel QuadSPI chip select pin
   */
  QuadSPI(PinName mosi, PinName miso, PinName sclk, PinName ssel = NC);

  /** Write to the Quad SPI Slave and return the response
   *
   *  @param value Data to be sent to the SPI slave
   *
   *  @returns
   *    none
  */
  int write(int value);

  /** Read from the Quad SPI Slave and return the response
   *
   *  @param none
   *
   *  @returns
   *    Response from the SPI slave
  */
  int read(void);

  /** Allow switching to and from Single SPI and Quad SPI
   *
   *  @param none
   *
   *  @returns
   *    Response from the SPI slave
  */
  void setSingleMode();
  void setQuadMode();
};

#endif /* _QUADSPI_H_ */