111 lines
3.3 KiB
C
111 lines
3.3 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) 2022 microDev
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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 "bindings/espulp/ULPAlarm.h"
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#include "common-hal/alarm/__init__.h"
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#include "supervisor/port.h"
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#include "driver/rtc_cntl.h"
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#include "soc/rtc_cntl_reg.h"
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#include "esp_sleep.h"
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static volatile bool woke_up = false;
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static bool alarm_set = false;
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void common_hal_espulp_ulpalarm_construct(espulp_ulpalarm_obj_t *self) {
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}
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mp_obj_t espulp_ulpalarm_find_triggered_alarm(const size_t n_alarms, const mp_obj_t *alarms) {
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for (size_t i = 0; i < n_alarms; i++) {
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if (mp_obj_is_type(alarms[i], &espulp_ulpalarm_type)) {
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return alarms[i];
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}
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}
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return mp_const_none;
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}
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mp_obj_t espulp_ulpalarm_record_wake_alarm(void) {
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espulp_ulpalarm_obj_t *const alarm = &alarm_wake_alarm.ulp_alarm;
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alarm->base.type = &espulp_ulpalarm_type;
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return alarm;
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}
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// This is used to wake the main CircuitPython task.
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STATIC void ulp_interrupt(void *arg) {
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(void)arg;
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woke_up = true;
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port_wake_main_task_from_isr();
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}
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void espulp_ulpalarm_set_alarm(const bool deep_sleep, const size_t n_alarms, const mp_obj_t *alarms) {
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espulp_ulpalarm_obj_t *alarm = 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], &espulp_ulpalarm_type)) {
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if (alarm != MP_OBJ_NULL) {
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mp_raise_ValueError_varg(translate("Only one %q can be set."), MP_QSTR_ULPAlarm);
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}
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alarm = MP_OBJ_TO_PTR(alarms[i]);
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}
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}
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if (alarm == MP_OBJ_NULL) {
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return;
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}
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// enable ulp interrupt
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rtc_isr_register(&ulp_interrupt, NULL, RTC_CNTL_COCPU_INT_ST);
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REG_SET_BIT(RTC_CNTL_INT_ENA_REG, RTC_CNTL_COCPU_INT_ENA);
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alarm_set = true;
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}
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void espulp_ulpalarm_prepare_for_deep_sleep(void) {
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if (!alarm_set) {
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return;
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}
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// disable ulp interrupt
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rtc_isr_deregister(&ulp_interrupt, NULL);
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REG_CLR_BIT(RTC_CNTL_INT_ENA_REG, RTC_CNTL_COCPU_INT_ENA);
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// enable ulp wakeup
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esp_sleep_enable_ulp_wakeup();
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esp_sleep_pd_config(ESP_PD_DOMAIN_RTC_SLOW_MEM, ESP_PD_OPTION_ON);
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}
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bool espulp_ulpalarm_woke_this_cycle(void) {
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return woke_up;
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}
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void espulp_ulpalarm_reset(void) {
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woke_up = false;
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alarm_set = false;
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}
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