fix: import ring buffer after fix Cargo.toml of ring-buffer crate

Cargo.toml

@@ -15,8 +15,8 @@ rev = "3e362624547462928a219c40f9ea8e3a64f21e5f"
 git = "https://gitea.doryan04.ru/TheEmbeddedRust/static-pins"
 
 [features]
-ring-buf = ["ring-buffer"]
 sparkfun-promicro = ["arduino-hal/sparkfun-promicro", "static-pins/sparkfun-promicro"]
+ring-buf = ["ring-buffer"]
 
 [dependencies.avr-device]
 version = "0.5.4"

src/lib.rs

@@ -16,8 +16,6 @@ use static_pins::StaticPinOps;
 
 mod structures;
 
-pub use structures::ring_buffer::*;
-
 pub type PollResult = Result<(), PollError>;
 pub type ReadByteResult = Result<u8, CorruptedData>;
 pub type CorruptedData = (u8, u8);

src/structures/ring_buffer.rs

@@ -2,6 +2,7 @@
 // Youtube: https://www.youtube.com/watch?v=uIJnATS9j_0
 
 use arduino_hal::port::PinOps;
+use ring_buffer::RingBuffer;
 use static_pins::StaticPinOps;
 
 use crate::{