Function esp_idf_sys::ets_update_cpu_frequency

pub unsafe extern "C" fn ets_update_cpu_frequency(ticks_per_us: u32)

@brief Set the real CPU ticks per us to the ets, so that ets_delay_us will be accurate. Call this function when CPU frequency is changed.

@param uint32_t ticks_per_us : CPU ticks per us.

@return None