lm3s8962: add an example application for this specific board.

[bertos.git] / examples / lm3s8962 / hw / hw_kbd.h

diff --git a/examples/lm3s8962/hw/hw_kbd.h b/examples/lm3s8962/hw/hw_kbd.h
new file mode 100644 (file)
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+++ b/examples/lm3s8962/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 LM3S1968 keypad: hardware-specific definitions
+ *
+ * \author Andrea Righi <arighi@develer.com>
+ */
+
+#ifndef HW_KBD_H
+#define HW_KBD_H
+
+#include <cfg/macros.h> /* BV() */
+#include <io/lm3s.h> /* GPIO_PORTG_BASE */
+#include <drv/clock_lm3s.h> /* lm3s_busyWait() */
+#include <drv/gpio_lm3s.h> /* lm3s_gpioPinConfig() / lm3s_gpioPinRead() */
+#include "hw/kbd_map.h"
+
+#define K_RPT_MASK (K_UP | K_DOWN | K_LEFT | K_RIGHT)
+
+#define KBD_HW_INIT                                                    \
+       do {                                                            \
+               /* Enable the peripheral clock */                       \
+               SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOE;                   \
+               SYSCTL_RCGC2_R |= SYSCTL_RCGC2_GPIOF;                   \
+               lm3s_busyWait(512);                                     \
+               lm3s_gpioPinConfig(GPIO_PORTE_BASE,                     \
+                       BV(3) | BV(2) | BV(1) | BV(0),                  \
+                       GPIO_DIR_MODE_IN,                               \
+                       GPIO_STRENGTH_2MA,                              \
+                       GPIO_PIN_TYPE_STD_WPU);                         \
+               lm3s_gpioPinConfig(GPIO_PORTF_BASE,                     \
+                       BV(1),                                          \
+                       GPIO_DIR_MODE_IN,                               \
+                       GPIO_STRENGTH_2MA,                              \
+                       GPIO_PIN_TYPE_STD_WPU);                         \
+       } while (0)
+
+/**
+ * Read the keyboard ports and return the mask of depressed keys.
+ */
+INLINE keymask_t kbd_readkeys(void)
+{
+       return ~(lm3s_gpioPinRead(GPIO_PORTE_BASE,
+                       BV(3) | BV(2) | BV(1) | BV(0)) |
+               lm3s_gpioPinRead(GPIO_PORTF_BASE, BV(1)) << 3);
+
+}
+
+#endif /* HW_KBD_H */