text: /*
   * This file is part of the MicroPython project, http://micropython.org/
   *
   * The MIT License (MIT)
   *
   * Copyright (c) 2021 Lucian Copeland for Adafruit Industries
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #ifndef MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_ALARM__INIT__H
  #define MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_ALARM__INIT__H
  
  #include "common-hal/alarm/SleepMemory.h"
  
  extern const alarm_sleep_memory_obj_t alarm_sleep_memory_obj;
  
  // This is the first byte of the BKUP register bank.
  // We use it to store which alarms are set.
  #ifndef SAMD_ALARM_FLAG
  #define SAMD_ALARM_FLAG      (RTC->MODE0.BKUP[0].reg)
  #define SAMD_ALARM_FLAG_TIME (_U_(0x1) << 0)
  #define SAMD_ALARM_FLAG_PIN  (_U_(0x1) << 1)
  
  #define SAMD_ALARM_FLAG_TIME_SET (SAMD_ALARM_FLAG |= SAMD_ALARM_FLAG_TIME)
  #define SAMD_ALARM_FLAG_TIME_CLR (SAMD_ALARM_FLAG &= ~SAMD_ALARM_FLAG_TIME)
  #define SAMD_ALARM_FLAG_TIME_CHK (SAMD_ALARM_FLAG & SAMD_ALARM_FLAG_TIME)
  
  #define SAMD_ALARM_FLAG_PIN_SET (SAMD_ALARM_FLAG |= SAMD_ALARM_FLAG_PIN)
  #define SAMD_ALARM_FLAG_PIN_CLR (SAMD_ALARM_FLAG &= ~SAMD_ALARM_FLAG_PIN)
  #define SAMD_ALARM_FLAG_PIN_CHK (SAMD_ALARM_FLAG & SAMD_ALARM_FLAG_PIN)
  #endif
  
  typedef enum {
      SAMD_WAKEUP_UNDEF,
      SAMD_WAKEUP_GPIO,
      SAMD_WAKEUP_RTC
  } samd_sleep_source_t;
  
  extern void alarm_set_wakeup_reason(samd_sleep_source_t reason);
  void alarm_get_wakeup_cause(void);
  extern void alarm_reset(void);
  
  #endif // MICROPY_INCLUDED_ATMEL_SAMD_COMMON_HAL_ALARM__INIT__H
  