Diff: helpers.h

Revision:

2:d8a9ebd28f0a

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/helpers.h	Thu Oct 08 06:50:37 2020 +0000
@@ -0,0 +1,62 @@
+/** \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 */