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/****************************************************************************
* configs/sam3u-ek/src/up_leds.c
*
* Copyright (C) 2009-2010 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdbool.h>
#include <debug.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
#include "sam_gpio.h"
#include "sam3u-ek.h"
#ifdef CONFIG_ARCH_LEDS
/****************************************************************************
* Definitions
****************************************************************************/
/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
* with CONFIG_DEBUG_VERBOSE too)
*/
#ifdef CONFIG_DEBUG_LEDS
# define leddbg lldbg
# define ledvdbg llvdbg
#else
# define leddbg(x...)
# define ledvdbg(x...)
#endif
#define LED_OFF 0
#define LED_ON 1
#define LED_NOCHANGE 2
#define LED_MASK 3
#define LED0_SHIFT 0
#define LED0_OFF (LED_OFF << LED0_SHIFT)
#define LED0_ON (LED_ON << LED0_SHIFT)
#define LED0_NOCHANGE (LED_NOCHANGE << LED0_SHIFT)
#define LED1_SHIFT 2
#define LED1_OFF (LED_OFF << LED1_SHIFT)
#define LED1_ON (LED_ON << LED1_SHIFT)
#define LED1_NOCHANGE (LED_NOCHANGE << LED1_SHIFT)
#define LED2_SHIFT 4
#define LED2_OFF (LED_OFF << LED2_SHIFT)
#define LED2_ON (LED_ON << LED2_SHIFT)
#define LED2_NOCHANGE (LED_NOCHANGE << LED2_SHIFT)
/****************************************************************************
* Private Data
****************************************************************************/
static const uint8_t g_ledon[8] =
{
(LED0_OFF |LED1_OFF |LED2_OFF), /* LED_STARTED */
(LED0_ON |LED1_OFF |LED2_ON), /* LED_HEAPALLOCATE */
(LED0_OFF |LED1_ON |LED2_OFF), /* LED_IRQSENABLED */
(LED0_ON |LED1_ON |LED2_ON), /* LED_STACKCREATED */
(LED0_NOCHANGE|LED1_OFF |LED2_NOCHANGE), /* LED_INIRQ */
(LED0_NOCHANGE|LED1_NOCHANGE|LED2_OFF), /* LED_SIGNAL */
(LED0_ON |LED1_NOCHANGE|LED2_NOCHANGE), /* LED_ASSERTION */
(LED0_ON |LED1_NOCHANGE|LED2_NOCHANGE) /* LED_PANIC */
};
static const uint8_t g_ledoff[8] =
{
(LED0_OFF |LED1_OFF |LED2_OFF), /* LED_STARTED (does not happen) */
(LED0_ON |LED1_OFF |LED2_ON), /* LED_HEAPALLOCATE (does not happen) */
(LED0_OFF |LED1_ON |LED2_OFF), /* LED_IRQSENABLED (does not happen) */
(LED0_ON |LED1_ON |LED2_ON), /* LED_STACKCREATED (does not happen) */
(LED0_NOCHANGE|LED1_ON |LED2_NOCHANGE), /* LED_INIRQ */
(LED0_NOCHANGE|LED1_NOCHANGE|LED2_ON), /* LED_SIGNAL */
(LED0_OFF |LED1_NOCHANGE|LED2_NOCHANGE), /* LED_ASSERTION */
(LED0_OFF |LED1_NOCHANGE|LED2_NOCHANGE) /* LED_PANIC */
};
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_setled
****************************************************************************/
static void up_setled(uint16_t pinset, uint8_t state)
{
/* Assume active high. Initial state == 0 means active high */
bool polarity = ((pinset & GPIO_OUTPUT_SET) == 0);
switch (state)
{
case LED_OFF:
polarity = !polarity;
case LED_ON:
break;
case LED_NOCHANGE:
default:
return;
}
sam_gpiowrite(pinset, polarity);
}
/****************************************************************************
* Name: up_setleds
****************************************************************************/
static void up_setleds(uint8_t state)
{
up_setled(GPIO_LED0, (state >> LED0_SHIFT) & LED_MASK);
up_setled(GPIO_LED1, (state >> LED1_SHIFT) & LED_MASK);
up_setled(GPIO_LED2, (state >> LED2_SHIFT) & LED_MASK);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_led_initialize
****************************************************************************/
void board_led_initialize(void)
{
(void)sam_configgpio(GPIO_LED0);
(void)sam_configgpio(GPIO_LED1);
(void)sam_configgpio(GPIO_LED2);
}
/****************************************************************************
* Name: board_led_on
****************************************************************************/
void board_led_on(int led)
{
up_setleds(g_ledon[led & 7]);
}
/****************************************************************************
* Name: board_led_off
****************************************************************************/
void board_led_off(int led)
{
up_setleds(g_ledoff[led & 7]);
}
#endif /* CONFIG_ARCH_LEDS */
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