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cpu/esp32/periph_rtc: funcs for enter/exit sleep

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This commit is contained in:
Gunar Schorcht 2020-03-19 10:46:15 +01:00
parent b1ec6953a3
commit f4aa253645
2 changed files with 58 additions and 1 deletions
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44
cpu/esp32/include/rtc_arch.h Normal file
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@ -0,0 +1,44 @@
/*
* Copyright (C) 2020 Gunar Schorcht
*
* This file is subject to the terms and conditions of the GNU Lesser
* General Public License v2.1. See the file LICENSE in the top level
* directory for more details.
*/
/**
* @ingroup cpu_esp32
* @{
*
* @file
* @brief Architecture specific RTC functions for ESP32
*
* @author Gunar Schorcht <gunar@schorcht.net>
* @}
*/
#ifndef RTC_ARCH_H
#define RTC_ARCH_H
#ifdef __cplusplus
extern "C" {
#endif
/**
* @brief Called before the power management enters a light or deep sleep mode
* @param mode sleep mode that is entered
* @return time to sleep in us
*/
uint64_t rtc_pm_sleep_enter(unsigned mode);
/**
* @brief Called after the power management left light sleep mode
* @param cause wake-up cause
*/
void rtc_pm_sleep_exit(uint32_t cause);
#ifdef __cplusplus
}
#endif
#endif /* RTC_ARCH_H */

15
cpu/esp32/periph/rtc.c
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@ -52,6 +52,7 @@
#include "cpu.h"
#include "esp_attr.h"
#include "esp_sleep.h"
#include "log.h"
#include "irq_arch.h"
#include "periph/rtc.h"
@ -345,9 +346,21 @@ static void IRAM_ATTR _rtc_timer_handler(void* arg)
irq_isr_exit();
}
void rtc_handle_pending_alarm(void)
uint64_t rtc_pm_sleep_enter(unsigned mode)
{
(void)mode;
if (_rtc_alarm_cb) {
uint64_t sleep = (_sys_alarm_time - _sys_get_time()) * US_PER_SEC;
esp_sleep_enable_timer_wakeup(sleep);
return sleep;
}
return 0;
}
void rtc_pm_sleep_exit(uint32_t cause)
{
/* call the RTC time was the wakeup source and an RTC alarm was set */
if (cause == ESP_SLEEP_WAKEUP_TIMER && _rtc_alarm_cb) {
_rtc_alarm_cb(_rtc_alarm_arg);
_rtc_alarm_cb = 0;
}