circuitpython/ports/atmel-samd/common-hal/alarm/__init__.h

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/*
* 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.
*/
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#pragma once
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#include "common-hal/alarm/SleepMemory.h"
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#include "common-hal/alarm/pin/PinAlarm.h"
#include "common-hal/alarm/time/TimeAlarm.h"
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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
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#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)
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#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
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typedef enum {
SAMD_WAKEUP_UNDEF,
SAMD_WAKEUP_GPIO,
SAMD_WAKEUP_RTC
} samd_sleep_source_t;
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typedef union {
alarm_pin_pinalarm_obj_t pin_alarm;
alarm_time_timealarm_obj_t time_alarm;
} alarm_wake_alarm_union_t;
extern alarm_wake_alarm_union_t alarm_wake_alarm;
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extern void alarm_set_wakeup_reason(samd_sleep_source_t reason);
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extern void alarm_get_wakeup_cause(void);
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extern void alarm_reset(void);