Add SAM3N-EK board and example preset.

[bertos.git] / boards / sam3n-ek / hw / hw_kbd.h

diff --git a/boards/sam3n-ek/hw/hw_kbd.h b/boards/sam3n-ek/hw/hw_kbd.h
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+++ b/boards/sam3n-ek/hw/hw_kbd.h
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+/**
+ * \file
+ * <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction.  Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License.  This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
+ * Copyright 2010 Develer S.r.l. (http://www.develer.com/)
+ *
+ * -->
+ *
+ * \brief SAM3N-EK keypad: hardware-specific definitions
+ *
+ * \author Stefano Fedrigo <aleph@develer.com>
+ */
+
+#ifndef HW_KBD_H
+#define HW_KBD_H
+
+#include <cfg/macros.h> /* BV() */
+#include <io/sam3_pio.h>
+#include "hw/kbd_map.h"
+
+#define K_RPT_MASK (K_LEFT | K_RIGHT)
+
+#define KBD_HW_INIT                                                    \
+       do {                                                            \
+               PIOA_IDR = BV(15) | BV(16);                             \
+               PIOA_PUER = BV(15) | BV(16);                            \
+               PIOA_ODR = BV(15) | BV(16);                             \
+               PIOA_PER = BV(15) | BV(16);                             \
+       } while (0)
+
+/**
+ * Read the keyboard ports and return the mask of depressed keys.
+ */
+INLINE keymask_t kbd_readkeys(void)
+{
+       keymask_t mask = 0;
+       uint32_t reg = PIOA_PDSR;
+       if (!(reg & BV(15)))
+               mask |= K_LEFT;
+       if (!(reg & BV(16)))
+               mask |= K_RIGHT;
+       return mask;
+}
+
+#endif /* HW_KBD_H */