/****************************************************************************
* configs/olimex-strp711/src/up_leds.c
*
* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
* 3. Neither the name NuttX nor the names of its contributors may be
* used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
****************************************************************************/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* The Olimex board has two buttons, one labled "BUT" and the other "WAKEUP"
*
* P0.15: WAKEUP button
* P1.13: BUT button
*/
#define STR71X_BUTBUTTON_GPIO1 (0x2000)
#define STR71X_WAKEUPBUTTON_GPIO0 (0x8000)
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_buttoninit
****************************************************************************/
#ifdef CONFIG_ARCH_BUTTONS
void up_buttoninit(void)
{
uint16_t reg16;
/* Configure the GPIO0 & 1 pins as inputs */
reg16 = getreg16(STR71X_GPIO0_PC0);
reg16 |= STR71X_WAKEUPBUTTON_GPIO0;
putreg16(reg16, STR71X_GPIO0_PC0);
reg16 = getreg16(STR71X_GPIO0_PC1);
reg16 &= ~STR71X_WAKEUPBUTTON_GPIO0;
putreg16(reg16, STR71X_GPIO0_PC1);
reg16 = getreg16(STR71X_GPIO0_PC2);
reg16 &= ~STR71X_WAKEUPBUTTON_GPIO0;
putreg16(reg16, STR71X_GPIO0_PC2);
reg16 = getreg16(STR71X_GPIO1_PC0);
reg16 |= STR71X_BUTBUTTON_GPIO1;
putreg16(reg16, STR71X_GPIO1_PC0);
reg16 = getreg16(STR71X_GPIO1_PC1);
reg16 &= ~STR71X_BUTBUTTON_GPIO1;
putreg16(reg16, STR71X_GPIO1_PC1);
reg16 = getreg16(STR71X_GPIO1_PC2);
reg16 &= ~STR71X_BUTBUTTON_GPIO1;
putreg16(reg16, STR71X_GPIO1_PC2);
}
/****************************************************************************
* Name: up_buttons
****************************************************************************/
uint8_t up_buttons(void)
{
uint8_t ret = 0;
if ((getreg16(STR71X_GPIO0_PD) & STR71X_WAKEUPBUTTON_GPIO0) != 0)
{
ret |= WAKEUP_BUTTON;
}
if ((getreg16(STR71X_GPIO1_PD) & STR71X_BUTBUTTON_GPIO1) != 0)
{
ret |= BUT_BUTTON;
}
return ret;
}
#endif /* CONFIG_ARCH_BUTTONS */
