text: /****************************************************************************
   * boards/arm/nrf52/nrf52-feather/src/nrf52_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 NRF52 Feather board has 2 user-controllable LEDs:
   *
   *   LED   MCU
   *   LED1  PIN0-17
   *   LED2  PIN0-19
   *
   * A low output illuminates the LED.
   */
  
  /****************************************************************************
   * 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_internal.h"
  #include "nrf52-feather.h"
  
  #ifdef CONFIG_ARCH_LEDS
  
  #define LED_ON 1
  #define LED_OFF 0
  
  /* This array maps an LED number to GPIO pin configuration */
  
  static const uint32_t g_ledcfg[BOARD_NLEDS] =
  {
  #if 0 < BOARD_NLEDS
    GPIO_LED1,
  #endif
  #if 1 < BOARD_NLEDS
    GPIO_LED2
  #endif
  };
  
  /****************************************************************************
   * Private Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: led_dumppins
   ****************************************************************************/
  
  #ifdef LED_VERBOSE
  static void led_dumppins(const char *msg)
  {
    nrf52_pin_dump(PINCONFIG_LED, msg);
    nrf52_gpio_dump(GPIO_LED, msg);
  }
  #else
  #  define led_dumppins(m)
  #endif
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name: board_autoled_initialize
   ****************************************************************************/
  
  void board_autoled_initialize(void)
  {
    int i;
  
    /* Configure LED pin as a GPIO outputs */
  
    led_dumppins("board_autoled_initialize() Entry)");
  
    for (i = 0; i < BOARD_NLEDS; i++)
      {
        nrf52_gpio_config(g_ledcfg[i]);
      }
  
    led_dumppins("board_autoled_initialize() Exit");
  }
  
  /****************************************************************************
   * Name: board_autoled_on
   ****************************************************************************/
  
  void board_autoled_on(int led)
  {
    if ((unsigned)led < BOARD_NLEDS)
      {
        nrf52_gpio_write(g_ledcfg[led], LED_ON);
      }
  }
  
  /****************************************************************************
   * Name: board_autoled_off
   ****************************************************************************/
  
  void board_autoled_off(int led)
  {
    if ((unsigned)led < BOARD_NLEDS)
      {
        nrf52_gpio_write(g_ledcfg[led], LED_OFF);
      }
  }
  
  #endif /* CONFIG_ARCH_LEDS */
  