Function esp_idf_bindgen::rtc_clk_xtal_freq_get

pub unsafe extern "C" fn rtc_clk_xtal_freq_get() -> rtc_xtal_freq_t

@brief Get main XTAL frequency

This is the value stored in RTC register RTC_XTAL_FREQ_REG by the bootloader. As passed to rtc_clk_init function, or if the value was RTC_XTAL_FREQ_AUTO, the detected XTAL frequency.

@return XTAL frequency, one of rtc_xtal_freq_t