nuttx/boards/arm/nuc1xx/nutiny-nuc120/src/nuc_led.c

/****************************************************************************
 * boards/arm/nuc1xx/nutiny-nuc120/src/up_autoleds.c
 *
 *   Copyright (C) 2013, 2015 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.
 *
 ****************************************************************************/

/* The NuTiny has a single green LED that can be controlled from software.
 * This LED is connected to PIN17.  It is pulled high so a low value will
 * illuminate the LED.
 *
 * If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board
 * the NuTiny.
 * The following definitions describe how NuttX controls the LEDs:
 *
 *   SYMBOL                Meaning                 LED state
 *                                                 Initially all LED is OFF
 *   -------------------  -----------------------  ------------- ------------
 *   LED_STARTED          NuttX has been started   LED ON
 *   LED_HEAPALLOCATE     Heap has been allocated  LED ON
 *   LED_IRQSENABLED      Interrupts enabled       LED ON
 *   LED_STACKCREATED     Idle stack created       LED ON
 *   LED_INIRQ            In an interrupt          LED should glow
 *   LED_SIGNAL           In a signal handler      LED might glow
 *   LED_ASSERTION        An assertion failed      LED ON while handling the
 *                                                        assertion
 *   LED_PANIC            The system has crashed   LED Blinking at 2Hz
 *   LED_IDLE             NUC1XX is is sleep mode   (Optional, not used)
 */

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <stdbool.h>
#include <debug.h>

#include <nuttx/board.h>
#include <arch/board/board.h>

#include "chip.h"
#include "nuc_gpio.h"
#include "nutiny-nuc120.h"

#ifdef CONFIG_ARCH_LEDS

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/* Dump GPIO registers */

#ifdef CONFIG_DEBUG_LEDS_INFO
#  define led_dumpgpio(m) nuc_dumpgpio(GPIO_LED, m)
#else
#  define led_dumpgpio(m)
#endif

/****************************************************************************
 * Public Functions
 ****************************************************************************/

/****************************************************************************
 * Name: nuc_led_initialize
 *
 * Description:
 *   Initialize the on-board LED
 *
 ****************************************************************************/

void nuc_led_initialize(void)
{
  led_dumpgpio("Before configuration");
  nuc_configgpio(GPIO_LED);
  led_dumpgpio("After configuration");
}

/****************************************************************************
 * Name: board_autoled_on
 ****************************************************************************/

void board_autoled_on(int led)
{
  nuc_gpiowrite(GPIO_LED, false);
}

/****************************************************************************
 * Name: board_autoled_off
 ****************************************************************************/

void board_autoled_off(int led)
{
  nuc_gpiowrite(GPIO_LED, true);
}

#endif /* CONFIG_ARCH_LEDS */