121 lines
4.3 KiB
C
121 lines
4.3 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2020 Dan Halbert for Adafruit Industries
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "esp_sleep.h"
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#include "py/runtime.h"
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#include "supervisor/esp_port.h"
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#include "components/esp_timer/include/esp_timer.h"
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#include "shared-bindings/alarm/time/TimeAlarm.h"
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#include "shared-bindings/time/__init__.h"
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void common_hal_alarm_time_timealarm_construct(alarm_time_timealarm_obj_t *self, mp_float_t monotonic_time) {
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self->monotonic_time = monotonic_time;
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}
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mp_float_t common_hal_alarm_time_timealarm_get_monotonic_time(alarm_time_timealarm_obj_t *self) {
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return self->monotonic_time;
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}
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mp_obj_t alarm_time_timealarm_get_wakeup_alarm(size_t n_alarms, const mp_obj_t *alarms) {
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// First, check to see if we match
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for (size_t i = 0; i < n_alarms; i++) {
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if (MP_OBJ_IS_TYPE(alarms[i], &alarm_time_timealarm_type)) {
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return alarms[i];
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}
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}
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alarm_time_timealarm_obj_t *timer = m_new_obj(alarm_time_timealarm_obj_t);
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timer->base.type = &alarm_time_timealarm_type;
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// TODO: Set monotonic_time based on the RTC state.
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timer->monotonic_time = 0.0f;
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return timer;
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}
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esp_timer_handle_t pretend_sleep_timer;
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STATIC bool woke_up = false;
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// This is run in the timer task. We use it to wake the main CircuitPython task.
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void timer_callback(void *arg) {
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(void) arg;
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woke_up = true;
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xTaskNotifyGive(circuitpython_task);
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}
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bool alarm_time_timealarm_woke_us_up(void) {
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return woke_up;
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}
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void alarm_time_timealarm_reset(void) {
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esp_timer_stop(pretend_sleep_timer);
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esp_timer_delete(pretend_sleep_timer);
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pretend_sleep_timer = NULL;
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woke_up = false;
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}
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void alarm_time_timealarm_set_alarms(bool deep_sleep, size_t n_alarms, const mp_obj_t *alarms) {
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bool timealarm_set = false;
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alarm_time_timealarm_obj_t *timealarm = MP_OBJ_NULL;
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for (size_t i = 0; i < n_alarms; i++) {
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if (!MP_OBJ_IS_TYPE(alarms[i], &alarm_time_timealarm_type)) {
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continue;
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}
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if (timealarm_set) {
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mp_raise_ValueError(translate("Only one alarm.time alarm can be set."));
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}
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timealarm = MP_OBJ_TO_PTR(alarms[i]);
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timealarm_set = true;
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}
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if (!timealarm_set) {
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return;
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}
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if (pretend_sleep_timer != NULL) {
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esp_timer_stop(pretend_sleep_timer);
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} else {
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// Configure the timer to use during pretend sleep.
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esp_timer_create_args_t args;
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args.callback = timer_callback;
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args.arg = NULL;
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args.dispatch_method = ESP_TIMER_TASK;
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args.name = "Pretend deep sleep";
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esp_timer_create(&args, &pretend_sleep_timer);
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}
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// Compute how long to actually sleep, considering the time now.
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mp_float_t now_secs = uint64_to_float(common_hal_time_monotonic_ms()) / 1000.0f;
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mp_float_t wakeup_in_secs = MAX(0.0f, timealarm->monotonic_time - now_secs);
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const uint64_t sleep_for_us = (uint64_t) (wakeup_in_secs * 1000000);
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esp_sleep_enable_timer_wakeup(sleep_for_us);
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// Also set the RTC interrupt so it can wake our task. This will be wiped out
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// if we actually deep sleep.
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woke_up = false;
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esp_timer_start_once(pretend_sleep_timer, sleep_for_us);
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}
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