/****************************************************************************
 *
 *   Copyright (c) 2013 PX4 Development Team. All rights reserved.
 *
 * 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 PX4 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
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 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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 ****************************************************************************/

/**
 * @file px4fmu2_led.c
 *
 * PX4FMU LED backend.
 */

#include <nuttx/config.h>

#include <stdbool.h>

#include "stm32.h"
#include "board_config.h"

#include <arch/board/board.h>

/*
 * Ideally we'd be able to get these from up_internal.h,
 * but since we want to be able to disable the NuttX use
 * of leds for system indication at will and there is no
 * separate switch, we need to build independent of the
 * CONFIG_ARCH_LEDS configuration switch.
 */
__BEGIN_DECLS
extern void led_init();
extern void led_on(int led);
extern void led_off(int led);
extern void led_toggle(int led);
__END_DECLS

__EXPORT void led_init()
{
	/* Configure LED1 GPIO for output */

	stm32_configgpio(GPIO_LED1);
}

__EXPORT void led_on(int led)
{
	if (led == 1)
	{
		/* Pull down to switch on */
		stm32_gpiowrite(GPIO_LED1, false);
	}
}

__EXPORT void led_off(int led)
{
	if (led == 1)
	{
		/* Pull up to switch off */
		stm32_gpiowrite(GPIO_LED1, true);
	}
}

__EXPORT void led_toggle(int led)
{
	if (led == 1)
	{
		if (stm32_gpioread(GPIO_LED1))
			stm32_gpiowrite(GPIO_LED1, false);
		else
			stm32_gpiowrite(GPIO_LED1, true);
	}
}