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https://github.com/espressif/esp-idf.git
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13107d5968
sleep: add support for GPIO and UART wakeup from light sleep See merge request idf/esp-idf!3004
372 lines
13 KiB
C
372 lines
13 KiB
C
// Copyright 2015-2017 Espressif Systems (Shanghai) PTE LTD
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#pragma once
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#include <stdint.h>
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#include "esp_err.h"
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#include "driver/gpio.h"
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#include "driver/touch_pad.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Logic function used for EXT1 wakeup mode.
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*/
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typedef enum {
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ESP_EXT1_WAKEUP_ALL_LOW = 0, //!< Wake the chip when all selected GPIOs go low
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ESP_EXT1_WAKEUP_ANY_HIGH = 1 //!< Wake the chip when any of the selected GPIOs go high
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} esp_sleep_ext1_wakeup_mode_t;
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/**
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* @brief Power domains which can be powered down in sleep mode
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*/
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typedef enum {
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ESP_PD_DOMAIN_RTC_PERIPH, //!< RTC IO, sensors and ULP co-processor
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ESP_PD_DOMAIN_RTC_SLOW_MEM, //!< RTC slow memory
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ESP_PD_DOMAIN_RTC_FAST_MEM, //!< RTC fast memory
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ESP_PD_DOMAIN_XTAL, //!< XTAL oscillator
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ESP_PD_DOMAIN_MAX //!< Number of domains
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} esp_sleep_pd_domain_t;
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/**
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* @brief Power down options
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*/
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typedef enum {
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ESP_PD_OPTION_OFF, //!< Power down the power domain in sleep mode
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ESP_PD_OPTION_ON, //!< Keep power domain enabled during sleep mode
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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.
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} esp_sleep_pd_option_t;
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/**
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* @brief Sleep wakeup cause
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*/
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typedef enum {
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ESP_SLEEP_WAKEUP_UNDEFINED, //!< In case of deep sleep, reset was not caused by exit from deep sleep
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ESP_SLEEP_WAKEUP_ALL, //!< Not a wakeup cause, used to disable all wakeup sources with esp_sleep_disable_wakeup_source
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ESP_SLEEP_WAKEUP_EXT0, //!< Wakeup caused by external signal using RTC_IO
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ESP_SLEEP_WAKEUP_EXT1, //!< Wakeup caused by external signal using RTC_CNTL
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ESP_SLEEP_WAKEUP_TIMER, //!< Wakeup caused by timer
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ESP_SLEEP_WAKEUP_TOUCHPAD, //!< Wakeup caused by touchpad
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ESP_SLEEP_WAKEUP_ULP, //!< Wakeup caused by ULP program
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ESP_SLEEP_WAKEUP_GPIO, //!< Wakeup caused by GPIO (light sleep only)
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ESP_SLEEP_WAKEUP_UART, //!< Wakeup caused by UART (light sleep only)
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} esp_sleep_source_t;
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/* Leave this type define for compatibility */
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typedef esp_sleep_source_t esp_sleep_wakeup_cause_t;
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/**
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* @brief Disable wakeup source
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*
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* This function is used to deactivate wake up trigger for source
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* defined as parameter of the function.
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*
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* @note This function does not modify wake up configuration in RTC.
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* It will be performed in esp_sleep_start function.
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*
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* See docs/sleep-modes.rst for details.
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*
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* @param source - number of source to disable of type esp_sleep_source_t
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE if trigger was not active
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*/
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esp_err_t esp_sleep_disable_wakeup_source(esp_sleep_source_t source);
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/**
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* @brief Enable wakeup by ULP coprocessor
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* @note In revisions 0 and 1 of the ESP32, ULP wakeup source
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* can not be used when RTC_PERIPH power domain is forced
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* to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup
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* source is used.
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE if ULP co-processor is not enabled or if wakeup triggers conflict
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*/
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esp_err_t esp_sleep_enable_ulp_wakeup();
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/**
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* @brief Enable wakeup by timer
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* @param time_in_us time before wakeup, in microseconds
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_ARG if value is out of range (TBD)
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*/
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esp_err_t esp_sleep_enable_timer_wakeup(uint64_t time_in_us);
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/**
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* @brief Enable wakeup by touch sensor
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*
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* @note In revisions 0 and 1 of the ESP32, touch wakeup source
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* can not be used when RTC_PERIPH power domain is forced
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* to be powered on (ESP_PD_OPTION_ON) or when ext0 wakeup
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* source is used.
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*
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* @note The FSM mode of the touch button should be configured
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* as the timer trigger mode.
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*
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
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*/
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esp_err_t esp_sleep_enable_touchpad_wakeup();
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/**
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* @brief Get the touch pad which caused wakeup
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*
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* If wakeup was caused by another source, this function will return TOUCH_PAD_MAX;
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*
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* @return touch pad which caused wakeup
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*/
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touch_pad_t esp_sleep_get_touchpad_wakeup_status();
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/**
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* @brief Enable wakeup using a pin
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*
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* This function uses external wakeup feature of RTC_IO peripheral.
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* It will work only if RTC peripherals are kept on during sleep.
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*
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* This feature can monitor any pin which is an RTC IO. Once the pin transitions
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* into the state given by level argument, the chip will be woken up.
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*
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* @note This function does not modify pin configuration. The pin is
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* configured in esp_sleep_start, immediately before entering sleep mode.
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*
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* @note In revisions 0 and 1 of the ESP32, ext0 wakeup source
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* can not be used together with touch or ULP wakeup sources.
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*
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* @param gpio_num GPIO number used as wakeup source. Only GPIOs which are have RTC
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* functionality can be used: 0,2,4,12-15,25-27,32-39.
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* @param level input level which will trigger wakeup (0=low, 1=high)
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_ARG if the selected GPIO is not an RTC GPIO,
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* or the mode is invalid
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* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
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*/
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esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level);
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/**
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* @brief Enable wakeup using multiple pins
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*
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* This function uses external wakeup feature of RTC controller.
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* It will work even if RTC peripherals are shut down during sleep.
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*
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* This feature can monitor any number of pins which are in RTC IOs.
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* Once any of the selected pins goes into the state given by mode argument,
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* the chip will be woken up.
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*
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* @note This function does not modify pin configuration. The pins are
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* configured in esp_sleep_start, immediately before
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* entering sleep mode.
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*
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* @note internal pullups and pulldowns don't work when RTC peripherals are
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* shut down. In this case, external resistors need to be added.
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* Alternatively, RTC peripherals (and pullups/pulldowns) may be
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* kept enabled using esp_sleep_pd_config function.
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*
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* @param mask bit mask of GPIO numbers which will cause wakeup. Only GPIOs
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* which are have RTC functionality can be used in this bit map:
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* 0,2,4,12-15,25-27,32-39.
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* @param mode select logic function used to determine wakeup condition:
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* - ESP_EXT1_WAKEUP_ALL_LOW: wake up when all selected GPIOs are low
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* - ESP_EXT1_WAKEUP_ANY_HIGH: wake up when any of the selected GPIOs is high
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_ARG if any of the selected GPIOs is not an RTC GPIO,
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* or mode is invalid
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*/
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esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode_t mode);
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/**
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* @brief Enable wakeup from light sleep using GPIOs
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*
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* Each GPIO supports wakeup function, which can be triggered on either low level
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* or high level. Unlike EXT0 and EXT1 wakeup sources, this method can be used
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* both for all IOs: RTC IOs and digital IOs. It can only be used to wakeup from
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* light sleep though.
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*
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* To enable wakeup, first call gpio_wakeup_enable, specifying gpio number and
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* wakeup level, for each GPIO which is used for wakeup.
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* Then call this function to enable wakeup feature.
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*
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* @note In revisions 0 and 1 of the ESP32, GPIO wakeup source
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* can not be used together with touch or ULP wakeup sources.
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*
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_STATE if wakeup triggers conflict
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*/
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esp_err_t esp_sleep_enable_gpio_wakeup();
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/**
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* @brief Enable wakeup from light sleep using UART
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*
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* Use uart_set_wakeup_threshold function to configure UART wakeup threshold.
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*
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* Wakeup from light sleep takes some time, so not every character sent
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* to the UART can be received by the application.
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*
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* @note ESP32 does not support wakeup from UART2.
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*
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* @param uart_num UART port to wake up from
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_ARG if wakeup from given UART is not supported
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*/
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esp_err_t esp_sleep_enable_uart_wakeup(int uart_num);
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/**
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* @brief Get the bit mask of GPIOs which caused wakeup (ext1)
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*
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* If wakeup was caused by another source, this function will return 0.
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*
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* @return bit mask, if GPIOn caused wakeup, BIT(n) will be set
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*/
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uint64_t esp_sleep_get_ext1_wakeup_status();
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/**
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* @brief Set power down mode for an RTC power domain in sleep mode
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*
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* If not set set using this API, all power domains default to ESP_PD_OPTION_AUTO.
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*
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* @param domain power domain to configure
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* @param option power down option (ESP_PD_OPTION_OFF, ESP_PD_OPTION_ON, or ESP_PD_OPTION_AUTO)
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* @return
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* - ESP_OK on success
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* - ESP_ERR_INVALID_ARG if either of the arguments is out of range
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*/
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esp_err_t esp_sleep_pd_config(esp_sleep_pd_domain_t domain,
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esp_sleep_pd_option_t option);
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/**
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* @brief Enter deep sleep with the configured wakeup options
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*
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* This function does not return.
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*/
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void esp_deep_sleep_start() __attribute__((noreturn));
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/**
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* @brief Enter light sleep with the configured wakeup options
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*
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* @return
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* - ESP_OK on success (returned after wakeup)
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* - ESP_ERR_INVALID_STATE if WiFi or BT is not stopped
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*/
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esp_err_t esp_light_sleep_start();
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/**
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* @brief Enter deep-sleep mode
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*
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* The device will automatically wake up after the deep-sleep time
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* Upon waking up, the device calls deep sleep wake stub, and then proceeds
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* to load application.
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*
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* Call to this function is equivalent to a call to esp_deep_sleep_enable_timer_wakeup
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* followed by a call to esp_deep_sleep_start.
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*
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* esp_deep_sleep does not shut down WiFi, BT, and higher level protocol
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* connections gracefully.
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* Make sure relevant WiFi and BT stack functions are called to close any
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* connections and deinitialize the peripherals. These include:
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* - esp_bluedroid_disable
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* - esp_bt_controller_disable
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* - esp_wifi_stop
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*
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* This function does not return.
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*
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* @param time_in_us deep-sleep time, unit: microsecond
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*/
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void esp_deep_sleep(uint64_t time_in_us) __attribute__((noreturn));
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/**
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* @brief Enter deep-sleep mode
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*
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* Function has been renamed to esp_deep_sleep.
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* This name is deprecated and will be removed in a future version.
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*
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* @param time_in_us deep-sleep time, unit: microsecond
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*/
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void system_deep_sleep(uint64_t time_in_us) __attribute__((noreturn, deprecated));
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/**
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* @brief Get the wakeup source which caused wakeup from sleep
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*
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* @return cause of wake up from last sleep (deep sleep or light sleep)
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*/
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esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause();
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/**
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* @brief Default stub to run on wake from deep sleep.
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*
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* Allows for executing code immediately on wake from sleep, before
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* the software bootloader or ESP-IDF app has started up.
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*
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* This function is weak-linked, so you can implement your own version
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* to run code immediately when the chip wakes from
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* sleep.
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*
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* See docs/deep-sleep-stub.rst for details.
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*/
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void esp_wake_deep_sleep(void);
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/**
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* @brief Function type for stub to run on wake from sleep.
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*
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*/
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typedef void (*esp_deep_sleep_wake_stub_fn_t)(void);
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/**
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* @brief Install a new stub at runtime to run on wake from deep sleep
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*
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* If implementing esp_wake_deep_sleep() then it is not necessary to
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* call this function.
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*
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* However, it is possible to call this function to substitute a
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* different deep sleep stub. Any function used as a deep sleep stub
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* must be marked RTC_IRAM_ATTR, and must obey the same rules given
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* for esp_wake_deep_sleep().
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*/
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void esp_set_deep_sleep_wake_stub(esp_deep_sleep_wake_stub_fn_t new_stub);
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/**
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* @brief Get current wake from deep sleep stub
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* @return Return current wake from deep sleep stub, or NULL if
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* no stub is installed.
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*/
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esp_deep_sleep_wake_stub_fn_t esp_get_deep_sleep_wake_stub(void);
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/**
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* @brief The default esp-idf-provided esp_wake_deep_sleep() stub.
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*
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* See docs/deep-sleep-stub.rst for details.
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*/
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void esp_default_wake_deep_sleep(void);
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/**
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* @brief Disable logging from the ROM code after deep sleep.
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*
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* Using LSB of RTC_STORE4.
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*/
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void esp_deep_sleep_disable_rom_logging(void);
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#ifdef __cplusplus
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}
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#endif
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