![]() Get the wakeup source which caused wakeup from sleep. Time_in_us – deep-sleep time, unit: microsecond esp_sleep_wakeup_cause_t esp_sleep_get_wakeup_cause ( void ) The device will wake up immediately if the deep-sleep time is set to 0 Parameters Make sure relevant WiFi and BT stack functions are called to close any connections and deinitialize the peripherals. 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.Ĭall to this function is equivalent to a call to esp_deep_sleep_enable_timer_wakeup followed by a call to esp_deep_sleep_start.Įsp_deep_sleep does not shut down WiFi, BT, and higher level protocol connections gracefully. Void esp_deep_sleep ( uint64_t time_in_us ) ReturnsĮSP_OK on success (returned after wakeup)ĮSP_ERR_INVALID_STATE if WiFi or BT is not stopped esp_err_t esp_light_sleep_start ( void ) Įnter light sleep with the configured wakeup options. Option – power down option (ESP_PD_OPTION_OFF, ESP_PD_OPTION_ON, or ESP_PD_OPTION_AUTO)ĮSP_ERR_INVALID_ARG if either of the arguments is out of rangeĮnter deep sleep with the configured wakeup options. If not set set using this API, all power domains default to ESP_PD_OPTION_AUTO. Set power down mode for an RTC power domain in sleep mode. Get the bit mask of GPIOs which caused wakeup (gpio)īit mask, if GPIOn caused wakeup, BIT(n) will be set esp_err_t esp_sleep_pd_config ( esp_sleep_pd_domain_t domain, esp_sleep_pd_option_t option ) Returnsīit mask, if GPIOn caused wakeup, BIT(n) will be set uint64_t esp_sleep_get_gpio_wakeup_status ( void ) If wakeup was caused by another source, this function will return 0. Get the bit mask of GPIOs which caused wakeup (ext1) Uint64_t esp_sleep_get_ext1_wakeup_status ( void ) #Esp deepsleep mode Bluetooth#Uart_num – UART port to wake up from ReturnsĮSP_ERR_INVALID_ARG if wakeup from given UART is not supportedĮsp_err_t esp_sleep_enable_bt_wakeup ( void ) ĮSP_ERR_NOT_SUPPORTED if wakeup from bluetooth is not supportedĮsp_err_t esp_sleep_disable_bt_wakeup ( void ) Įsp_err_t esp_sleep_enable_wifi_wakeup ( void ) Įsp_err_t esp_sleep_disable_wifi_wakeup ( void ) Then call this function to enable wakeup feature.ĮSP32 does not support wakeup from UART2. To enable wakeup, first call gpio_wakeup_enable, specifying gpio number and wakeup level, for each GPIO which is used for wakeup. It can only be used to wakeup from light sleep though. Unlike EXT0 and EXT1 wakeup sources, this method can be used both for all IOs: RTC IOs and digital IOs. Mode – Select logic function used to determine wakeup condition:ĮSP_GPIO_WAKEUP_GPIO_LOW: wake up when the gpio turn to low.ĮSP_GPIO_WAKEUP_GPIO_HIGH: wake up when the gpio turn to high.ĮSP_ERR_INVALID_ARG if gpio num is more than 5 or mode is invalid,Įsp_err_t esp_sleep_enable_gpio_wakeup ( void ) Įnable wakeup from light sleep using GPIOs.Įach GPIO supports wakeup function, which can be triggered on either low level or high level. Only GPIOs which are have RTC functionality can be used in this bit map. Gpio_pin_mask – Bit mask of GPIO numbers which will cause wakeup. BTW, when you use low level to wake up the chip, we strongly recommand you to add external registors (pull-up). You don’t need to care to pull-up or pull-down before using this function, because this will be done in esp_deep_sleep_start/esp_light_sleep_start based on param mask you give. This will allow the system to wake up from sleep automatically when required by the Wi-Fi driver, thereby maintaining a connection to the AP. ![]() If Wi-Fi connections need to be maintained, enable Wi-Fi Modem-sleep mode and automatic Light-sleep feature (see Power Management APIs). At this point, the hardware will be configured according to the requested wakeup sources, and the RTC controller will either power down or power off the CPUs and digital peripherals. Once wakeup sources are configured, the application can enter sleep mode using esp_light_sleep_start() or esp_deep_sleep_start() APIs. Wakeup sources can be configured at any moment before entering Light-sleep or Deep-sleep mode.Īdditionally, the application can force specific powerdown modes for RTC peripherals and RTC memories using esp_sleep_pd_config() API. Next section describes these APIs in detail. Wakeup sources can be enabled using esp_sleep_enable_X_wakeup APIs and can be disabled using esp_sleep_disable_wakeup_source() API. These sources can also be combined so that the chip will wake up when any of the sources are triggered. There are several wakeup sources in Deep-sleep and Light-sleep modes. ![]()
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