esp_sleep.h

/*
 * SPDX-FileCopyrightText: 2015-2021 Espressif Systems (Shanghai) CO LTD
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#pragma once

#include <stdint.h>
#include "esp_err.h"

#include "hal/touch_sensor_types.h"
#include "hal/gpio_types.h"

#include "soc/soc_caps.h"

#ifdef __cplusplus
extern "C" {
#endif

/*
 Definitions for the deepsleep prepare callbacks
*/
typedef void (*esp_deep_sleep_cb_t)(void);

/**
 * @brief Logic function used for EXT1 wakeup mode.
 */
#if SOC_PM_SUPPORT_EXT1_WAKEUP
#if CONFIG_IDF_TARGET_ESP32
typedef enum {
    ESP_EXT1_WAKEUP_ALL_LOW = 0,    //!< Wake the chip when all selected GPIOs go low
    ESP_EXT1_WAKEUP_ANY_HIGH = 1    //!< Wake the chip when any of the selected GPIOs go high
} esp_sleep_ext1_wakeup_mode_t;
#else
typedef enum {
    ESP_EXT1_WAKEUP_ANY_LOW = 0,    //!< Wake the chip when any of the selected GPIOs go low
    ESP_EXT1_WAKEUP_ANY_HIGH = 1,    //!< Wake the chip when any of the selected GPIOs go high
    ESP_EXT1_WAKEUP_ALL_LOW __attribute__((deprecated("wakeup mode \"ALL_LOW\" is no longer supported after ESP32, \
    please use ESP_EXT1_WAKEUP_ANY_LOW instead"))) = ESP_EXT1_WAKEUP_ANY_LOW
} esp_sleep_ext1_wakeup_mode_t;
#endif
#endif

#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
typedef enum {
    ESP_GPIO_WAKEUP_GPIO_LOW = 0,
    ESP_GPIO_WAKEUP_GPIO_HIGH = 1
} esp_deepsleep_gpio_wake_up_mode_t;
#endif

/**
 * @brief Power domains which can be powered down in sleep mode
 */
typedef enum {
#if SOC_PM_SUPPORT_RTC_PERIPH_PD
    ESP_PD_DOMAIN_RTC_PERIPH,      //!< RTC IO, sensors and ULP co-processor
#endif
#if SOC_PM_SUPPORT_RTC_SLOW_MEM_PD
    ESP_PD_DOMAIN_RTC_SLOW_MEM,    //!< RTC slow memory
#endif
#if SOC_PM_SUPPORT_RTC_FAST_MEM_PD
    ESP_PD_DOMAIN_RTC_FAST_MEM,    //!< RTC fast memory
#endif
    ESP_PD_DOMAIN_XTAL,            //!< XTAL oscillator
#if SOC_PM_SUPPORT_XTAL32K_PD
    ESP_PD_DOMAIN_XTAL32K,         //!< External 32 kHz XTAL oscillator
#endif
#if SOC_PM_SUPPORT_RC32K_PD
    ESP_PD_DOMAIN_RC32K,           //!< Internal 32 kHz RC oscillator
#endif
#if SOC_PM_SUPPORT_RC_FAST_PD
    ESP_PD_DOMAIN_RC_FAST,         //!< Internal Fast oscillator
#endif
#if SOC_PM_SUPPORT_CPU_PD
    ESP_PD_DOMAIN_CPU,             //!< CPU core
#endif
#if SOC_PM_SUPPORT_VDDSDIO_PD
    ESP_PD_DOMAIN_VDDSDIO,         //!< VDD_SDIO
#endif
#if SOC_PM_SUPPORT_MODEM_PD
    ESP_PD_DOMAIN_MODEM,           //!< MODEM, includes WiFi, Bluetooth and IEEE802.15.4
#endif
#if SOC_PM_SUPPORT_TOP_PD
    ESP_PD_DOMAIN_TOP,             //!< SoC TOP
#endif
    ESP_PD_DOMAIN_MAX              //!< Number of domains
} esp_sleep_pd_domain_t;

#define ESP_PD_DOMAIN_RTC8M _Pragma("GCC warning \"'ESP_PD_DOMAIN_RTC8M' enum is deprecated\"") ESP_PD_DOMAIN_RC_FAST

/**
 * @brief Power down options
 */
typedef enum {
    ESP_PD_OPTION_OFF,      //!< Power down the power domain in sleep mode
    ESP_PD_OPTION_ON,       //!< Keep power domain enabled during sleep mode
    ESP_PD_OPTION_AUTO      //!< Keep power domain enabled in sleep mode, if it is needed by one of the wakeup options. Otherwise power it down.
} esp_sleep_pd_option_t;

/**
 * @brief Sleep wakeup cause
 */
typedef enum {
    ESP_SLEEP_WAKEUP_UNDEFINED,    //!< In case of deep sleep, reset was not caused by exit from deep sleep
    ESP_SLEEP_WAKEUP_ALL,          //!< Not a wakeup cause, used to disable all wakeup sources with esp_sleep_disable_wakeup_source
    ESP_SLEEP_WAKEUP_EXT0,         //!< Wakeup caused by external signal using RTC_IO
    ESP_SLEEP_WAKEUP_EXT1,         //!< Wakeup caused by external signal using RTC_CNTL
    ESP_SLEEP_WAKEUP_TIMER,        //!< Wakeup caused by timer
    ESP_SLEEP_WAKEUP_TOUCHPAD,     //!< Wakeup caused by touchpad
    ESP_SLEEP_WAKEUP_ULP,          //!< Wakeup caused by ULP program
    ESP_SLEEP_WAKEUP_GPIO,         //!< Wakeup caused by GPIO (light sleep only on ESP32, S2 and S3)
    ESP_SLEEP_WAKEUP_UART,         //!< Wakeup caused by UART (light sleep only)
    ESP_SLEEP_WAKEUP_WIFI,              //!< Wakeup caused by WIFI (light sleep only)
    ESP_SLEEP_WAKEUP_COCPU,             //!< Wakeup caused by COCPU int
    ESP_SLEEP_WAKEUP_COCPU_TRAP_TRIG,   //!< Wakeup caused by COCPU crash
    ESP_SLEEP_WAKEUP_BT,           //!< Wakeup caused by BT (light sleep only)
} esp_sleep_source_t;

/**
 * @brief Sleep mode
 */
typedef enum {
    ESP_SLEEP_MODE_LIGHT_SLEEP,   //!< light sleep mode
    ESP_SLEEP_MODE_DEEP_SLEEP     //!< deep sleep mode
} esp_sleep_mode_t;

/* Leave this type define for compatibility */
typedef esp_sleep_source_t esp_sleep_wakeup_cause_t;

enum {
    ESP_ERR_SLEEP_REJECT = ESP_ERR_INVALID_STATE,
    ESP_ERR_SLEEP_TOO_SHORT_SLEEP_DURATION = ESP_ERR_INVALID_ARG,
};

/**
 * @brief Disable wakeup source
 *
 * This function is used to deactivate wake up trigger for source
 * defined as parameter of the function.
 *
 * @note This function does not modify wake up configuration in RTC.
 *       It will be performed in esp_deep_sleep_start/esp_light_sleep_start function.
 *
 * See docs/sleep-modes.rst for details.
 *
 * @param source - number of source to disable of type esp_sleep_source_t
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_STATE if trigger was not active
 */
esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source);

#if SOC_ULP_SUPPORTED
/**
 * @brief Enable wakeup by ULP coprocessor
 * @note On ESP32, ULP wakeup source cannot be used when RTC_PERIPH power domain is forced,
 *       to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup source is used.
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NOT_SUPPORTED if additional current by touch (CONFIG_RTC_EXT_CRYST_ADDIT_CURRENT) is enabled.
 *      - ESP_ERR_INVALID_STATE if ULP co-processor is not enabled or if wakeup triggers conflict
 */
esp_err_t esp_sleep_enable_ulp_wakeup(void);

#endif // SOC_ULP_SUPPORTED

/**
 * @brief Enable wakeup by timer
 * @param time_in_us  time before wakeup, in microseconds
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if value is out of range (TBD)
 */
esp_err_t esp_sleep_enable_timer_wakeup(uint64_t time_in_us);

#if SOC_TOUCH_SENSOR_SUPPORTED
/**
 * @brief Enable wakeup by touch sensor
 *
 * @note On ESP32, touch wakeup source can not be used when RTC_PERIPH power domain is forced
 *       to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup source is used.
 *
 * @note The FSM mode of the touch button should be configured
 *       as the timer trigger mode.
 *
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NOT_SUPPORTED if additional current by touch (CONFIG_RTC_EXT_CRYST_ADDIT_CURRENT) is enabled.
 *      - ESP_ERR_INVALID_STATE if wakeup triggers conflict
 */
esp_err_t esp_sleep_enable_touchpad_wakeup(void);

/**
 * @brief Get the touch pad which caused wakeup
 *
 * If wakeup was caused by another source, this function will return TOUCH_PAD_MAX;
 *
 * @return touch pad which caused wakeup
 */
touch_pad_t esp_sleep_get_touchpad_wakeup_status(void);
#endif // SOC_TOUCH_SENSOR_SUPPORTED

/**
 * @brief Returns true if a GPIO number is valid for use as wakeup source.
 *
 * @note For SoCs with RTC IO capability, this can be any valid RTC IO input pin.
 *
 * @param gpio_num Number of the GPIO to test for wakeup source capability
 *
 * @return True if this GPIO number will be accepted as a sleep wakeup source.
 */
bool esp_sleep_is_valid_wakeup_gpio(gpio_num_t gpio_num);

#if SOC_PM_SUPPORT_EXT0_WAKEUP
/**
 * @brief Enable wakeup using a pin
 *
 * This function uses external wakeup feature of RTC_IO peripheral.
 * It will work only if RTC peripherals are kept on during sleep.
 *
 * This feature can monitor any pin which is an RTC IO. Once the pin transitions
 * into the state given by level argument, the chip will be woken up.
 *
 * @note This function does not modify pin configuration. The pin is
 *       configured in esp_deep_sleep_start/esp_light_sleep_start,
 *       immediately before entering sleep mode.
 *
 * @note ESP32: ext0 wakeup source can not be used together with touch or ULP wakeup sources.
 *
 * @param gpio_num  GPIO number used as wakeup source. Only GPIOs with the RTC
 *        functionality can be used. For different SoCs, the related GPIOs are:
 *          - ESP32: 0, 2, 4, 12-15, 25-27, 32-39;
 *          - ESP32-S2: 0-21;
 *          - ESP32-S3: 0-21.
 * @param level  input level which will trigger wakeup (0=low, 1=high)
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if the selected GPIO is not an RTC GPIO,
 *        or the mode is invalid
 *      - ESP_ERR_INVALID_STATE if wakeup triggers conflict
 */
esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level);
#endif // SOC_PM_SUPPORT_EXT0_WAKEUP

#if SOC_PM_SUPPORT_EXT1_WAKEUP
/**
 * @brief Enable wakeup using multiple pins
 *
 * This function uses external wakeup feature of RTC controller.
 * It will work even if RTC peripherals are shut down during sleep.
 *
 * This feature can monitor any number of pins which are in RTC IOs.
 * Once selected pins go into the state given by level_mode argument,
 * the chip will be woken up.
 *
 * @note This function does not modify pin configuration. The pins are
 *       configured in esp_deep_sleep_start/esp_light_sleep_start,
 *       immediately before entering sleep mode.
 *
 * @note Internal pullups and pulldowns don't work when RTC peripherals are
 *       shut down. In this case, external resistors need to be added.
 *       Alternatively, RTC peripherals (and pullups/pulldowns) may be
 *       kept enabled using esp_sleep_pd_config function. If we turn off the
 *       ``RTC_PERIPH`` domain or certain chips lack the ``RTC_PERIPH`` domain,
 *       we will use the HOLD feature to maintain the pull-up and pull-down on
 *       the pins during sleep. HOLD feature will be acted on the pin internally
 *       before the system entering sleep, and this can further reduce power consumption.
 *
 * @param io_mask  Bit mask of GPIO numbers which will cause wakeup. Only GPIOs
 *                 which have RTC functionality can be used in this bit map.
 *                 For different SoCs, the related GPIOs are:
 *                    - ESP32: 0, 2, 4, 12-15, 25-27, 32-39
 *                    - ESP32-S2: 0-21
 *                    - ESP32-S3: 0-21
 *                    - ESP32-C6: 0-7
 *                    - ESP32-H2: 7-14
 * @param level_mode Select logic function used to determine wakeup condition:
 *                   When target chip is ESP32:
 *                      - ESP_EXT1_WAKEUP_ALL_LOW: wake up when all selected GPIOs are low
 *                      - ESP_EXT1_WAKEUP_ANY_HIGH: wake up when any of the selected GPIOs is high
 *                   When target chip is ESP32-S2, ESP32-S3, ESP32-C6 or ESP32-H2:
 *                      - ESP_EXT1_WAKEUP_ANY_LOW: wake up when any of the selected GPIOs is low
 *                      - ESP_EXT1_WAKEUP_ANY_HIGH: wake up when any of the selected GPIOs is high
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if any of the selected GPIOs is not an RTC GPIO,
 *        or mode is invalid
 */
esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t io_mask, esp_sleep_ext1_wakeup_mode_t level_mode);

#if SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
/**
 * @brief Enable wakeup using multiple pins, allows different trigger mode per pin
 *
 * This function uses external wakeup feature of RTC controller.
 * It will work even if RTC peripherals are shut down during sleep.
 *
 * This feature can monitor any number of pins which are in RTC IOs.
 * Once selected pins go into the state given by level_mode argument,
 * the chip will be woken up.
 *
 * @note This function does not modify pin configuration. The pins are
 *       configured in esp_deep_sleep_start/esp_light_sleep_start,
 *       immediately before entering sleep mode.
 *
 * @note Internal pullups and pulldowns don't work when RTC peripherals are
 *       shut down. In this case, external resistors need to be added.
 *       Alternatively, RTC peripherals (and pullups/pulldowns) may be
 *       kept enabled using esp_sleep_pd_config function. If we turn off the
 *       ``RTC_PERIPH`` domain or certain chips lack the ``RTC_PERIPH`` domain,
 *       we will use the HOLD feature to maintain the pull-up and pull-down on
 *       the pins during sleep. HOLD feature will be acted on the pin internally
 *       before the system entering sleep, and this can further reduce power consumption.
 *
 * @param io_mask  Bit mask of GPIO numbers which will cause wakeup. Only GPIOs
 *                 which have RTC functionality can be used in this bit map.
 *                 For different SoCs, the related GPIOs are:
 *                    - ESP32-C6: 0-7.
 *                    - ESP32-H2: 7-14.
 * @param level_mask Select logic function used to determine wakeup condition per pin.
 *                   Each bit of the level_mask corresponds to the respective GPIO. Each bit's corresponding
 *                   position is set to 0, the wakeup level will be low, on the contrary,
 *                   each bit's corresponding position is set to 1, the wakeup level will be high.
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if any of the selected GPIOs is not an RTC GPIO,
 *        or mode is invalid
 */
esp_err_t esp_sleep_enable_ext1_wakeup_with_level_mask(uint64_t io_mask, uint64_t level_mask);
#endif // SOC_PM_SUPPORT_EXT1_WAKEUP_MODE_PER_PIN
#endif // SOC_PM_SUPPORT_EXT1_WAKEUP

#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
/**
 * @brief Enable wakeup using specific gpio pins
 *
 * This function enables an IO pin to wake up the chip from deep sleep.
 *
 * @note This function does not modify pin configuration. The pins are
 *       configured inside esp_deep_sleep_start, immediately before entering sleep mode.
 *
 * @note You don't need to worry about pull-up or pull-down resistors before
 *       using this function because the ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS
 *       option is enabled by default. It will automatically set pull-up or pull-down
 *       resistors internally in esp_deep_sleep_start based on the wakeup mode. However,
 *       when using external pull-up or pull-down resistors, please be sure to disable
 *       the ESP_SLEEP_GPIO_ENABLE_INTERNAL_RESISTORS option, as the combination of internal
 *       and external resistors may cause interference. BTW, when you use low level to wake up the
 *       chip, we strongly recommend you to add external resistors (pull-up).
 *
 * @param gpio_pin_mask  Bit mask of GPIO numbers which will cause wakeup. Only GPIOs
 *              which have RTC functionality (pads that powered by VDD3P3_RTC) can be used in this bit map.
 * @param mode Select logic function used to determine wakeup condition:
 *            - ESP_GPIO_WAKEUP_GPIO_LOW: wake up when the gpio turn to low.
 *            - ESP_GPIO_WAKEUP_GPIO_HIGH: wake up when the gpio turn to high.
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if the mask contains any invalid deep sleep wakeup pin or wakeup mode is invalid
 */
esp_err_t esp_deep_sleep_enable_gpio_wakeup(uint64_t gpio_pin_mask, esp_deepsleep_gpio_wake_up_mode_t mode);
#endif

/**
 * @brief Enable wakeup from light sleep using GPIOs
 *
 * Each GPIO supports wakeup function, which can be triggered on either low level
 * or high level. Unlike EXT0 and EXT1 wakeup sources, this method can be used
 * both for all IOs: RTC IOs and digital IOs. It can only be used to wakeup from
 * light sleep though.
 *
 * To enable wakeup, first call gpio_wakeup_enable, specifying gpio number and
 * wakeup level, for each GPIO which is used for wakeup.
 * Then call this function to enable wakeup feature.
 *
 * @note On ESP32, GPIO wakeup source can not be used together with touch or ULP wakeup sources.
 *
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_STATE if wakeup triggers conflict
 */
esp_err_t esp_sleep_enable_gpio_wakeup(void);

/**
 * @brief Enable wakeup from light sleep using UART
 *
 * Use uart_set_wakeup_threshold function to configure UART wakeup threshold.
 *
 * Wakeup from light sleep takes some time, so not every character sent
 * to the UART can be received by the application.
 *
 * @note ESP32 does not support wakeup from UART2.
 *
 * @param uart_num  UART port to wake up from
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if wakeup from given UART is not supported
 */
esp_err_t esp_sleep_enable_uart_wakeup(int uart_num);

/**
 * @brief Enable wakeup by bluetooth
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NOT_SUPPORTED if wakeup from bluetooth is not supported
 */
esp_err_t esp_sleep_enable_bt_wakeup(void);

/**
 * @brief Disable wakeup by bluetooth
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NOT_SUPPORTED if wakeup from bluetooth is not supported
 */
esp_err_t esp_sleep_disable_bt_wakeup(void);

/**
 * @brief Enable wakeup by WiFi MAC
 * @return
 *      - ESP_OK on success
 */
esp_err_t esp_sleep_enable_wifi_wakeup(void);

/**
 * @brief Disable wakeup by WiFi MAC
 * @return
 *      - ESP_OK on success
 */
esp_err_t esp_sleep_disable_wifi_wakeup(void);

/**
 * @brief Enable beacon wakeup by WiFi MAC, it will wake up the system into modem state
 * @return
 *      - ESP_OK on success
 */
esp_err_t esp_sleep_enable_wifi_beacon_wakeup(void);

/**
 * @brief Disable beacon wakeup by WiFi MAC
 * @return
 *      - ESP_OK on success
 */
esp_err_t esp_sleep_disable_wifi_beacon_wakeup(void);

/**
 * @brief Get the bit mask of GPIOs which caused wakeup (ext1)
 *
 * If wakeup was caused by another source, this function will return 0.
 *
 * @return bit mask, if GPIOn caused wakeup, BIT(n) will be set
 */
uint64_t esp_sleep_get_ext1_wakeup_status(void);

#if SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP
/**
 * @brief Get the bit mask of GPIOs which caused wakeup (gpio)
 *
 * If wakeup was caused by another source, this function will return 0.
 *
 * @return bit mask, if GPIOn caused wakeup, BIT(n) will be set
 */
uint64_t esp_sleep_get_gpio_wakeup_status(void);
#endif //SOC_GPIO_SUPPORT_DEEPSLEEP_WAKEUP

/**
 * @brief Set power down mode for an RTC power domain in sleep mode
 *
 * If not set set using this API, all power domains default to ESP_PD_OPTION_AUTO.
 *
 * @param domain  power domain to configure
 * @param option  power down option (ESP_PD_OPTION_OFF, ESP_PD_OPTION_ON, or ESP_PD_OPTION_AUTO)
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_INVALID_ARG if either of the arguments is out of range
 */
esp_err_t esp_sleep_pd_config(esp_sleep_pd_domain_t domain,
                              esp_sleep_pd_option_t option);

/**
 * @brief Enter deep sleep with the configured wakeup options
 *
 * @note In general, the function does not return, but if the sleep is rejected,
 * then it returns from it.
 *
 * The reason for the rejection can be such as a short sleep time.
 *
 * @return
 *  - No return - If the sleep is not rejected.
 *  - ESP_ERR_SLEEP_REJECT sleep request is rejected(wakeup source set before the sleep request)
 */
esp_err_t esp_deep_sleep_try_to_start(void);

/**
 * @brief Enter deep sleep with the configured wakeup options
 *
 * @note The function does not do a return (no rejection). Even if wakeup source set before the sleep request
 * it goes to deep sleep anyway.
 */
void esp_deep_sleep_start(void) __attribute__((__noreturn__));

/**
 * @brief Enter light sleep with the configured wakeup options
 *
 * @return
 *  - ESP_OK on success (returned after wakeup)
 *  - ESP_ERR_SLEEP_REJECT sleep request is rejected(wakeup source set before the sleep request)
 *  - ESP_ERR_SLEEP_TOO_SHORT_SLEEP_DURATION after deducting the sleep flow overhead, the final sleep duration
 *                                           is too short to cover the minimum sleep duration of the chip, when
 *                                           rtc timer wakeup source enabled
 */
esp_err_t esp_light_sleep_start(void);

/**
 * @brief Enter deep-sleep mode
 *
 * The device will automatically wake up after the deep-sleep time
 * Upon waking up, the device calls deep sleep wake stub, and then proceeds
 * to load application.
 *
 * Call to this function is equivalent to a call to esp_deep_sleep_enable_timer_wakeup
 * followed by a call to esp_deep_sleep_start.
 *
 * @param time_in_us  deep-sleep time, unit: microsecond
 *
 * @return
 *  - No return - If the sleep is not rejected.
 *  - ESP_ERR_SLEEP_REJECT sleep request is rejected(wakeup source set before the sleep request)
 */
esp_err_t esp_deep_sleep_try(uint64_t time_in_us);

/**
 * @brief Enter deep-sleep mode
 *
 * The device will automatically wake up after the deep-sleep time
 * Upon waking up, the device calls deep sleep wake stub, and then proceeds
 * to load application.
 *
 * Call to this function is equivalent to a call to esp_deep_sleep_enable_timer_wakeup
 * followed by a call to esp_deep_sleep_start.
 *
 * @note The function does not do a return (no rejection).. Even if wakeup source set before the sleep request
 * it goes to deep sleep anyway.
 *
 * @param time_in_us  deep-sleep time, unit: microsecond
 */
void esp_deep_sleep(uint64_t time_in_us) __attribute__((__noreturn__));

/**
  * @brief Register a callback to be called from the deep sleep prepare
  *
  * @warning deepsleep callbacks should without parameters, and MUST NOT,
  *          UNDER ANY CIRCUMSTANCES, CALL A FUNCTION THAT MIGHT BLOCK.
  *
  * @param new_dslp_cb     Callback to be called
  *
  * @return
  *     - ESP_OK:         Callback registered to the deepsleep misc_modules_sleep_prepare
  *     - ESP_ERR_NO_MEM: No more hook space for register the callback
  */
esp_err_t esp_deep_sleep_register_hook(esp_deep_sleep_cb_t new_dslp_cb);

/**
  * @brief Unregister an deepsleep callback
  *
  * @param old_dslp_cb     Callback to be unregistered
  */
void esp_deep_sleep_deregister_hook(esp_deep_sleep_cb_t old_dslp_cb);

/**
 * @brief Get the wakeup source which caused wakeup from sleep
 *
 * @return cause of wake up from last sleep (deep sleep or light sleep)
 */
esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause(void);


/**
 * @brief Default stub to run on wake from deep sleep.
 *
 * Allows for executing code immediately on wake from sleep, before
 * the software bootloader or ESP-IDF app has started up.
 *
 * This function is weak-linked, so you can implement your own version
 * to run code immediately when the chip wakes from
 * sleep.
 *
 * See docs/deep-sleep-stub.rst for details.
 */
void esp_wake_deep_sleep(void);

/**
 * @brief Function type for stub to run on wake from sleep.
 *
 */
typedef void (*esp_deep_sleep_wake_stub_fn_t)(void);

/**
 * @brief Install a new stub at runtime to run on wake from deep sleep
 *
 * If implementing esp_wake_deep_sleep() then it is not necessary to
 * call this function.
 *
 * However, it is possible to call this function to substitute a
 * different deep sleep stub. Any function used as a deep sleep stub
 * must be marked RTC_IRAM_ATTR, and must obey the same rules given
 * for esp_wake_deep_sleep().
 */
void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub);

/**
 * @brief Set wake stub entry to default `esp_wake_stub_entry`
 */
void esp_set_deep_sleep_wake_stub_default_entry(void);

/**
 * @brief Get current wake from deep sleep stub
 * @return Return current wake from deep sleep stub, or NULL if
 *         no stub is installed.
 */
esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void);

/**
 *  @brief The default esp-idf-provided esp_wake_deep_sleep() stub.
 *
 *  See docs/deep-sleep-stub.rst for details.
 */
void esp_default_wake_deep_sleep(void);

/**
 * @brief Disable logging from the ROM code after deep sleep.
 *
 * Using LSB of RTC_STORE4.
 */
void esp_deep_sleep_disable_rom_logging(void);

#ifdef SOC_PM_SUPPORT_CPU_PD

#if SOC_PM_CPU_RETENTION_BY_RTCCNTL
/**
 * @brief CPU Power down low-level initialize, enable CPU power down during light sleep
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NO_MEM not enough retention memory
 */
esp_err_t esp_sleep_cpu_pd_low_init(void);

/**
 * @brief CPU Power down low-level deinitialize, disable CPU power down during light sleep
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NO_MEM not enough retention memory
 */
esp_err_t esp_sleep_cpu_pd_low_deinit(void);

#endif

/**
 * @brief CPU Power down initialize
 *
 * @return
 *      - ESP_OK on success
 *      - ESP_ERR_NO_MEM not enough retention memory
 */
esp_err_t esp_sleep_cpu_retention_init(void);

/**
 * @brief CPU Power down de-initialize
 *
 * @return
 *      - ESP_OK on success
 *
 * Release system retention memory.
 */
esp_err_t esp_sleep_cpu_retention_deinit(void);
#endif

/**
 * @brief Configure to isolate all GPIO pins in sleep state
 */
void esp_sleep_config_gpio_isolate(void);

/**
 * @brief Enable or disable GPIO pins status switching between slept status and waked status.
 * @param enable decide whether to switch status or not
 */
void esp_sleep_enable_gpio_switch(bool enable);

#if CONFIG_MAC_BB_PD
/**
 * @brief Function type for stub to run mac bb power down.
 */
typedef void (* mac_bb_power_down_cb_t)(void);

/**
 * @brief Function type for stub to run mac bb power up.
 */
typedef void (* mac_bb_power_up_cb_t)(void);

/**
 * @brief  Registet mac bb power down callback.
 * @param  cb mac bb power down callback.
 * @return
 *  - ESP_OK on success
 */
esp_err_t esp_register_mac_bb_pd_callback(mac_bb_power_down_cb_t cb);

/**
 * @brief  Unregistet mac bb power down callback.
 * @param  cb mac bb power down callback.
 * @return
 *  - ESP_OK on success
 */
esp_err_t esp_unregister_mac_bb_pd_callback(mac_bb_power_down_cb_t cb);

/**
 * @brief  Registet mac bb power up callback.
 * @param  cb mac bb power up callback.
 * @return
 *  - ESP_OK on success
 */
esp_err_t esp_register_mac_bb_pu_callback(mac_bb_power_up_cb_t cb);

/**
 * @brief  Unregistet mac bb power up callback.
 * @param  cb mac bb power up callback.
 * @return
 *  - ESP_OK on success
 */
esp_err_t esp_unregister_mac_bb_pu_callback(mac_bb_power_up_cb_t cb);
#endif

#ifdef __cplusplus
}
#endif