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driver/rtc: add APIs to enable/disable hold function

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This commit is contained in:
Ivan Grokhotkov
2017-03-19 23:59:19 +08:00
parent d3ce5c3504
commit 6ad0a157e3
4 changed files with 110 additions and 55 deletions
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42
components/driver/include/driver/rtc_io.h
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@@ -38,7 +38,8 @@ typedef struct {
uint32_t pulldown; /*!< Mask of pulldown enable */
uint32_t slpsel; /*!< If slpsel bit is set, slpie will be used as pad input enabled signal in sleep mode */
uint32_t slpie; /*!< Mask of input enable in sleep mode */
uint32_t hold; /*!< Mask of hold_force bit for RTC IO in RTC_CNTL_HOLD_FORCE_REG */
uint32_t hold; /*!< Mask of hold enable */
uint32_t hold_force;/*!< Mask of hold_force bit for RTC IO in RTC_CNTL_HOLD_FORCE_REG */
int rtc_num; /*!< RTC IO number, or -1 if not an RTC GPIO */
} rtc_gpio_desc_t;
@@ -192,15 +193,44 @@ esp_err_t rtc_gpio_pullup_dis(gpio_num_t gpio_num);
esp_err_t rtc_gpio_pulldown_dis(gpio_num_t gpio_num);
/**
* @brief Disable "hold" signal for all RTC IOs
* @brief Enable hold function on an RTC IO pad
*
* Each RTC pad has a "hold" input signal from the RTC controller.
* If hold signal is set, pad latches current values of input enable,
* Enabling HOLD function will cause the pad to latch current values of
* input enable, output enable, output value, function, drive strength values.
* This function is useful when going into light or deep sleep mode to prevent
* the pin configuration from changing.
*
* @param gpio_num GPIO number (e.g. GPIO_NUM_12)
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG GPIO is not an RTC IO
*/
esp_err_t rtc_gpio_hold_en(gpio_num_t gpio_num);
/**
* @brief Disable hold function on an RTC IO pad
*
* Disabling hold function will allow the pad receive the values of
* input enable, output enable, output value, function, drive strength from
* RTC_IO peripheral.
*
* @param gpio_num GPIO number (e.g. GPIO_NUM_12)
* @return
* - ESP_OK Success
* - ESP_ERR_INVALID_ARG GPIO is not an RTC IO
*/
esp_err_t rtc_gpio_hold_dis(gpio_num_t gpio_num);
/**
* @brief Disable force hold signal for all RTC IOs
*
* Each RTC pad has a "force hold" input signal from the RTC controller.
* If this signal is set, pad latches current values of input enable,
* function, output enable, and other signals which come from the RTC mux.
* Hold signal is enabled before going into deep sleep for pins which
* Force hold signal is enabled before going into deep sleep for pins which
* are used for EXT1 wakeup.
*/
void rtc_gpio_unhold_all();
void rtc_gpio_force_hold_dis_all();
#ifdef __cplusplus