text: /****************************************************************************
   * boards/arm/kinetis/freedom-k28f/src/k28_autoleds.c
   *
   * Licensed to the Apache Software Foundation (ASF) under one or more
   * contributor license agreements.  See the NOTICE file distributed with
   * this work for additional information regarding copyright ownership.  The
   * ASF licenses this file to you under the Apache License, Version 2.0 (the
   * "License"); you may not use this file except in compliance with the
   * License.  You may obtain a copy of the License at
   *
   *   http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
   * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
   * License for the specific language governing permissions and limitations
   * under the License.
   *
   ****************************************************************************/
  
  /* The Freedom K28F has a single RGB LED driven by the K28F as follows:
   *
   *   LED    K28
   *   ------ -------------------------------------------------------
   *   RED    PTE6
   *   BLUE   PTE7
   *   GREEN  PTE8
   *
   *
   * If CONFIG_ARCH_LEDs is defined, then NuttX will control the LED on board
   * the Freedom K28F.  The following definitions describe how NuttX controls
   * the LEDs:
   *
   *   SYMBOL                Meaning                 LED state
   *                                                 RED   GREEN  BLUE
   *   -------------------  -----------------------  -----------------
   *   LED_STARTED          NuttX has been started    OFF  OFF  OFF
   *   LED_HEAPALLOCATE     Heap has been allocated   OFF  OFF  ON
   *   LED_IRQSENABLED      Interrupts enabled        OFF  OFF  ON
   *   LED_STACKCREATED     Idle stack created        OFF  ON   OFF
   *   LED_INIRQ            In an interrupt          (no change)
   *   LED_SIGNAL           In a signal handler      (no change)
   *   LED_ASSERTION        An assertion failed      (no change)
   *   LED_PANIC            The system has crashed    FLASH OFF OFF
   *   LED_IDLE             K28 is in 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 "chip.h"
  #include "kinetis.h"
  #include "freedom-k28f.h"
  
  #include <arch/board/board.h>
  
  #ifdef CONFIG_ARCH_LEDS
  
  /****************************************************************************
   * Pre-processor Definitions
   ****************************************************************************/
  
  /* Summary of all possible settings */
  
  #define LED_NOCHANGE      0 /* LED_IRQSENABLED, LED_INIRQ, LED_SIGNAL, LED_ASSERTION */
  #define LED_OFF_OFF_OFF   1 /* LED_STARTED */
  #define LED_OFF_OFF_ON    2 /* LED_HEAPALLOCATE */
  #define LED_OFF_ON_OFF    3 /* LED_STACKCREATED */
  #define LED_ON_OFF_OFF    4 /* LED_PANIC */
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: board_autoled_initialize
   *
   * Description:
   *   Initialize the on-board LED
   *
   ****************************************************************************/
  
  void board_autoled_initialize(void)
  {
    kinetis_pinconfig(GPIO_LED_R);
    kinetis_pinconfig(GPIO_LED_G);
    kinetis_pinconfig(GPIO_LED_B);
  }
  
  /****************************************************************************
   * Name: board_autoled_on
   ****************************************************************************/
  
  void board_autoled_on(int led)
  {
    if (led != LED_NOCHANGE)
      {
        bool redon   = false;
        bool greenon = false;
        bool blueon  = false;
  
        switch (led)
          {
            default:
            case LED_OFF_OFF_OFF:
              break;
  
            case LED_OFF_OFF_ON:
              blueon = true;
              break;
  
            case LED_OFF_ON_OFF:
              greenon = true;
              break;
  
            case LED_ON_OFF_OFF:
              redon = true;
              break;
          }
  
        kinetis_gpiowrite(GPIO_LED_R, redon);
        kinetis_gpiowrite(GPIO_LED_G, greenon);
        kinetis_gpiowrite(GPIO_LED_B, blueon);
      }
  }
  
  /****************************************************************************
   * Name: board_autoled_off
   ****************************************************************************/
  
  void board_autoled_off(int led)
  {
    if (led == LED_ON_OFF_OFF)
      {
        kinetis_gpiowrite(GPIO_LED_R, false);
        kinetis_gpiowrite(GPIO_LED_G, false);
        kinetis_gpiowrite(GPIO_LED_B, false);
      }
  }
  
  #endif /* CONFIG_ARCH_LEDS */
  