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/****************************************************************************
* configs/sama5d3x-ek/src/sam_userleds.c
*
* Copyright (C) 2013 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.
*
****************************************************************************/
/* There are two LEDs on the SAMA5D3 series-CM board that can be controlled
* by software. A blue LED is controlled via PIO pins. A red LED normally
* provides an indication that power is supplied to the board but can also
* be controlled via software.
*
* PE25. This blue LED is pulled high and is illuminated by pulling PE25
* low.
*
* PE24. The red LED is also pulled high but is driven by a transistor so
* that it is illuminated when power is applied even if PE24 is not
* configured as an output. If PE24 is configured as an output, then the
* LCD is illuminated by a low output.
*/
/****************************************************************************
* Included Files
****************************************************************************/
#include <nuttx/config.h>
#include <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <arch/board/board.h>
#include "sam_pio.h"
#include "sama5d3x-ek.h"
#ifndef 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
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Function Protototypes
****************************************************************************/
/****************************************************************************
* Private Data
****************************************************************************/
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: sam_ledinit
****************************************************************************/
void sam_ledinit(void)
{
/* Configure LED PIOs for output */
sam_configpio(PIO_BLUE);
sam_configpio(PIO_RED);
}
/****************************************************************************
* Name: sam_setled
****************************************************************************/
void sam_setled(int led, bool ledon)
{
uint32_t ledcfg;
if (led == BOARD_BLUE)
{
/* Low illuminates */
ledcfg = PIO_BLUE;
ledon = !ledon;
}
else if (led == BOARD_RED)
{
/* High illuminates */
ledcfg = PIO_RED;
}
else
{
return;
}
sam_piowrite(ledcfg, ledon);
}
/****************************************************************************
* Name: sam_setleds
****************************************************************************/
void sam_setleds(uint8_t ledset)
{
bool ledon;
/* Low illuminates */
ledon = ((ledset & BOARD_BLUE_BIT) == 0);
sam_piowrite(PIO_BLUE, ledon);
/* High illuminates */
ledon = ((ledset & BOARD_RED_BIT) != 0);
sam_piowrite(PIO_RED, ledon);
}
#endif /* !CONFIG_ARCH_LEDS */
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