114 lines
3.9 KiB
C
114 lines
3.9 KiB
C
/****************************************************************************
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* configs/stm3210e-eval/src/up_leds.c
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*
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* Copyright (C) 2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#include <arch/board/board.h>
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#include "stm3210e-internal.h"
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#ifdef CONFIG_ARCH_BUTTONS
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/****************************************************************************
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* Private Data
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****************************************************************************/
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static const uint16_t g_buttons[NUM_BUTTONS] =
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{
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GPIO_BTN_WAKEUP, GPIO_BTN_TAMPER, GPIO_BTN_KEY, GPIO_JOY_KEY,
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GPIO_JOY_DOWN, GPIO_JOY_LEFT, GPIO_JOY_RIGHT, GPIO_JOY_UP
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};
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_buttoninit
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****************************************************************************/
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void up_buttoninit(void)
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{
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int i;
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/* Configure the GPIO pins as inputs. NOTE that EXTI interrupts are
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* configured for some pins but NOT used in this file
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*/
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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stm32_configgpio(g_buttons[i]);
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}
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}
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/****************************************************************************
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* Name: up_buttons
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****************************************************************************/
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uint8_t up_buttons(void)
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{
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uint8_t ret = 0;
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int i;
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/* Check that state of each key */
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for (i = 0; i < NUM_BUTTONS; i++)
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{
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/* A LOW value means that the key is pressed */
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if (!stm32_gpioread(g_buttons[i]))
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{
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ret |= (1 << i);
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}
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}
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return ret;
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}
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#endif /* CONFIG_ARCH_BUTTONS */
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