text: /****************************************************************************
   * configs/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 "up_arch.h"
  #include "up_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.  The it will continue to control LED2; LED1 is
   *   avaiable for application use.
   *
   *   If CONFIG_ARCH_LEDS is not defined, then both LEDs are available for application
   *   use.
   *
   ************************************************************************************/
  
  void board_userled_initialize(void)
  {
    /* All initialization performed in board_autoled_initialize() */
  }
  
  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(uint8_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);
  }
  