Xuyi Wang / SSD1963

ssd1963

helpers.h@4:84a51911fb31, 2020-10-16 (annotated)

Committer:
sPymbed
Date:
Fri Oct 16 17:39:40 2020 +0000
Revision:
4:84a51911fb31
Parent:
2:d8a9ebd28f0a 
fixed: backlight

Who changed what in which revision?

UserRevisionLine numberNew contents of line
sPymbed 2:d8a9ebd28f0a 1 /** \file helpers.h
sPymbed 2:d8a9ebd28f0a 2 * \brief Utility functions and macros.
sPymbed 2:d8a9ebd28f0a 3 * \copyright GNU Public License, v2. or later
sPymbed 2:d8a9ebd28f0a 4 *
sPymbed 2:d8a9ebd28f0a 5 * This library is based on the Arduino/chipKIT UTFT library by Henning
sPymbed 2:d8a9ebd28f0a 6 * Karlsen, http://henningkarlsen.com/electronics/library.php?id=52
sPymbed 2:d8a9ebd28f0a 7 *
sPymbed 2:d8a9ebd28f0a 8 * Copyright (C)2010-2012 Henning Karlsen. All right reserved.
sPymbed 2:d8a9ebd28f0a 9 *
sPymbed 2:d8a9ebd28f0a 10 * Copyright (C)2012 Todor Todorov.
sPymbed 2:d8a9ebd28f0a 11 *
sPymbed 2:d8a9ebd28f0a 12 * This library is free software; you can redistribute it and/or
sPymbed 2:d8a9ebd28f0a 13 * modify it under the terms of the GNU Lesser General Public
sPymbed 2:d8a9ebd28f0a 14 * License as published by the Free Software Foundation; either
sPymbed 2:d8a9ebd28f0a 15 * version 2.1 of the License, or (at your option) any later version.
sPymbed 2:d8a9ebd28f0a 16 *
sPymbed 2:d8a9ebd28f0a 17 * This library is distributed in the hope that it will be useful,
sPymbed 2:d8a9ebd28f0a 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of
sPymbed 2:d8a9ebd28f0a 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
sPymbed 2:d8a9ebd28f0a 20 * Lesser General Public License for more details.
sPymbed 2:d8a9ebd28f0a 21 *
sPymbed 2:d8a9ebd28f0a 22 * You should have received a copy of the GNU Lesser General Public
sPymbed 2:d8a9ebd28f0a 23 * License along with this library; if not, write to:
sPymbed 2:d8a9ebd28f0a 24 *
sPymbed 2:d8a9ebd28f0a 25 * Free Software Foundation, Inc.
sPymbed 2:d8a9ebd28f0a 26 * 51 Franklin St, 5th Floor, Boston, MA 02110-1301, USA
sPymbed 2:d8a9ebd28f0a 27 *
sPymbed 2:d8a9ebd28f0a 28 *********************************************************************/
sPymbed 2:d8a9ebd28f0a 29 #ifndef TFTLCD_HELPERS_H
sPymbed 2:d8a9ebd28f0a 30 #define TFTLCD_HELPERS_H
sPymbed 2:d8a9ebd28f0a 31
sPymbed 2:d8a9ebd28f0a 32 #include "mbed.h"
sPymbed 2:d8a9ebd28f0a 33
sPymbed 2:d8a9ebd28f0a 34 /** \def HIGH
sPymbed 2:d8a9ebd28f0a 35 * \brief User-friendly high pin level designation.
sPymbed 2:d8a9ebd28f0a 36 */
sPymbed 2:d8a9ebd28f0a 37 #define HIGH 1
sPymbed 2:d8a9ebd28f0a 38 /** \def LOW
sPymbed 2:d8a9ebd28f0a 39 * \brief User-friendly low pin level designation.
sPymbed 2:d8a9ebd28f0a 40 */
sPymbed 2:d8a9ebd28f0a 41 #define LOW 0
sPymbed 2:d8a9ebd28f0a 42
sPymbed 2:d8a9ebd28f0a 43 /** \def swap( type, a, b )
sPymbed 2:d8a9ebd28f0a 44 * \brief Convenience macro to swap two values.
sPymbed 2:d8a9ebd28f0a 45 */
sPymbed 2:d8a9ebd28f0a 46 #define swap( type, a, b ) { type tmp = ( a ); ( a ) = ( b ); ( b ) = tmp; }
sPymbed 2:d8a9ebd28f0a 47
sPymbed 2:d8a9ebd28f0a 48 /** \def pulseLow( pin )
sPymbed 2:d8a9ebd28f0a 49 * \brief Toggles a pin low, then high.
sPymbed 2:d8a9ebd28f0a 50 */
sPymbed 2:d8a9ebd28f0a 51 #define pulseLow( pin ) pin = LOW; pin = HIGH
sPymbed 2:d8a9ebd28f0a 52
sPymbed 2:d8a9ebd28f0a 53 /** \def pulseHigh( pin )
sPymbed 2:d8a9ebd28f0a 54 * \brief Toggles a pin high, then low.
sPymbed 2:d8a9ebd28f0a 55 */
sPymbed 2:d8a9ebd28f0a 56 #define pulseHigh( pin ) pin = HIGH; pin = LOW
sPymbed 2:d8a9ebd28f0a 57
sPymbed 2:d8a9ebd28f0a 58 #ifndef ushort
sPymbed 2:d8a9ebd28f0a 59 typedef unsigned short ushort;
sPymbed 2:d8a9ebd28f0a 60 #endif
sPymbed 2:d8a9ebd28f0a 61
sPymbed 2:d8a9ebd28f0a 62 #endif /* TFTLCD_HELPERS_H */