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sleep: add support for GPIO and UART wakeup from light sleep

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This commit is contained in:
Ivan Grokhotkov
2018-08-14 03:42:03 +03:00
parent 002d913ab6
commit 75629b7fc3
2 changed files with 77 additions and 9 deletions
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39
components/esp32/include/esp_sleep.h
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@@ -61,6 +61,8 @@ typedef enum {
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)
ESP_SLEEP_WAKEUP_UART, //!< Wakeup caused by UART (light sleep only)
} esp_sleep_source_t;
/* Leave this type define for compatibility */
@@ -189,6 +191,43 @@ esp_err_t esp_sleep_enable_ext0_wakeup(gpio_num_t gpio_num, int level);
*/
esp_err_t esp_sleep_enable_ext1_wakeup(uint64_t mask, esp_sleep_ext1_wakeup_mode_t mode);
/**
* @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 In revisions 0 and 1 of the 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();
/**
* @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 Get the bit mask of GPIOs which caused wakeup (ext1)