Function esp_idf_sys::esp_ble_tx_power_get

pub unsafe extern "C" fn esp_ble_tx_power_get(
    power_type: esp_ble_power_type_t,
) -> esp_power_level_t

@brief Get BLE TX power Connection Tx power should only be get after connection created. @param power_type : The type of which tx power, could set Advertising/Connection/Default and etc @return >= 0 - Power level, < 0 - Invalid