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helpers.h
- Committer:
- sPymbed
- Date:
- 2020-10-08
- Revision:
- 2:d8a9ebd28f0a
File content as of revision 2:d8a9ebd28f0a:
/** \file helpers.h
* \brief Utility functions and macros.
* \copyright GNU Public License, v2. or later
*
* This library is based on the Arduino/chipKIT UTFT library by Henning
* Karlsen, http://henningkarlsen.com/electronics/library.php?id=52
*
* Copyright (C)2010-2012 Henning Karlsen. All right reserved.
*
* Copyright (C)2012 Todor Todorov.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to:
*
* Free Software Foundation, Inc.
* 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA
*
*********************************************************************/
#ifndef TFTLCD_HELPERS_H
#define TFTLCD_HELPERS_H
#include "mbed.h"
/** \def HIGH
* \brief User-friendly high pin level designation.
*/
#define HIGH 1
/** \def LOW
* \brief User-friendly low pin level designation.
*/
#define LOW 0
/** \def swap( type, a, b )
* \brief Convenience macro to swap two values.
*/
#define swap( type, a, b ) { type tmp = ( a ); ( a ) = ( b ); ( b ) = tmp; }
/** \def pulseLow( pin )
* \brief Toggles a pin low, then high.
*/
#define pulseLow( pin ) pin = LOW; pin = HIGH
/** \def pulseHigh( pin )
* \brief Toggles a pin high, then low.
*/
#define pulseHigh( pin ) pin = HIGH; pin = LOW
#ifndef ushort
typedef unsigned short ushort;
#endif
#endif /* TFTLCD_HELPERS_H */