nuttx/boards/arm/lpc31xx/olimex-lpc-h3131/src/lpc31_leds.c

/****************************************************************************
 * boards/arm/lpc31xx/olimex-lpc-h3131/src/lpc31_leds.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.
 *
 ****************************************************************************/

/****************************************************************************
 * 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 "arm_arch.h"
#include "arm_internal.h"
#include "lpc31.h"

#include "lpc_h3131.h"

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

/****************************************************************************
 * Name: board_autoled_initialize
 *
 * Description:
 *   Configure LEDs.  LEDs are left in the OFF state.
 *
 ****************************************************************************/

void board_autoled_initialize(void)
{
  /* Turn off both LEDs */

  gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
  gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED2);
}

/****************************************************************************
 * Name: board_autoled_on
 *
 * Description:
 *   Select the "logical" ON state:
 *
 *    SYMBOL          Value  Meaning                     LED state
 *                                                   LED2     LED1
 *   ---------------- -----  -----------------------  -------- --------
 *   LED_STARTED        0  NuttX has been started     OFF      OFF
 *   LED_HEAPALLOCATE   0  Heap has been allocated    OFF      OFF
 *   LED_IRQSENABLED    0  Interrupts enabled         OFF      OFF
 *   LED_STACKCREATED   1  Idle stack created         ON       OFF
 *   LED_INIRQ          2  In an interrupt            N/C      N/C
 *   LED_SIGNAL         2  In a signal handler        N/C      N/C
 *   LED_ASSERTION      2  An assertion failed        N/C      N/C
 *   LED_PANIC          3  The system has crashed     N/C      Blinking
 *   LED_IDLE           -  MCU is is sleep mode         Not used
 *
 ****************************************************************************/

#ifdef CONFIG_ARCH_LEDS
void board_autoled_on(int led)
{
  switch (led)
    {
    case 0:
      gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
      gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED2);
      break;

    case 1:
      gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
      gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_LED2);
      break;

    case 2:
      break;

    case 3:
      gpio_outputhigh(LPC31_IOCONFIG_GPIO, GPIO_LED1);
      break;
    }
}
#endif

/****************************************************************************
 * Name: board_autoled_off
 *
 * Description:
 *   Select the "logical" OFF state:
 *
 *    SYMBOL          Value  Meaning                     LED state
 *                                                   LED2     LED1
 *   ---------------- -----  -----------------------  -------- --------
 *   LED_STARTED        0  NuttX has been started     OFF      OFF
 *   LED_HEAPALLOCATE   0  Heap has been allocated    OFF      OFF
 *   LED_IRQSENABLED    0  Interrupts enabled         OFF      OFF
 *   LED_STACKCREATED   1  Idle stack created         ON       OFF
 *   LED_INIRQ          2  In an interrupt            N/C      N/C
 *   LED_SIGNAL         2  In a signal handler        N/C      N/C
 *   LED_ASSERTION      2  An assertion failed        N/C      N/C
 *   LED_PANIC          3  The system has crashed     N/C      Blinking
 *   LED_IDLE           -  MCU is is sleep mode         Not used
 *
 ****************************************************************************/

#ifdef CONFIG_ARCH_LEDS
void board_autoled_off(int led)
{
  switch (led)
    {
    case 0:
    case 1:
    case 2:
      break;

    case 3:
      gpio_outputlow(LPC31_IOCONFIG_GPIO, GPIO_LED1);
      break;
    }
}
#endif

/****************************************************************************
 * Name:  board_userled_initialize, board_userled, and board_userled_all
 *
 * Description:
 *   These interfaces allow user control of the board LEDs.
 *
 *   If CONFIG_ARCH_LEDS is defined, then NuttX will control both on-board
 *   LEDs up until the completion of boot.
 *   Then it will continue to control LED2;
 *   LED1 is available for application use.
 *
 *   If CONFIG_ARCH_LEDS is not defined, then both LEDs are available
 *   for application use.
 *
 ****************************************************************************/

uint32_t board_userled_initialize(void)
{
  /* All initialization performed in board_autoled_initialize() */

  return BOARD_NLEDS;
}

void board_userled(int led, bool ledon)
{
  uint32_t bit;

#ifndef CONFIG_ARCH_LEDS
  if (led == BOARD_LED1)
    {
      bit = GPIO_LED1;
    }
  else
#endif
  if (led == BOARD_LED2)
    {
      bit = GPIO_LED2;
    }
  else
    {
      return;
    }

  if (ledon)
    {
      gpio_outputhigh(LPC31_IOCONFIG_GPIO, bit);
    }
  else
    {
      gpio_outputlow(LPC31_IOCONFIG_GPIO, bit);
    }
}

void board_userled_all(uint32_t ledset)
{
#ifndef CONFIG_ARCH_LEDS
  board_userled(BOARD_LED1, (ledset & BOARD_LED1_BIT) != 0);
#endif
  board_userled(BOARD_LED2, (ledset & BOARD_LED2_BIT) != 0);
}