diff --git a/2sem_sem2/src/bin/main.rs b/2sem_sem2/src/bin/main.rs
index 58dd020..35dede4 100644
--- a/2sem_sem2/src/bin/main.rs
+++ b/2sem_sem2/src/bin/main.rs
@@ -5,8 +5,9 @@
 use core::sync::atomic::{AtomicBool, Ordering};
 use defmt::info;
 use embassy_executor::Spawner;
+use embassy_stm32::exti;
 use embassy_stm32::gpio;
-use embassy_stm32::gpio::Output;
+use embassy_stm32::gpio::{Input, Output, Pull};
 use embassy_stm32::usart::{Config, InterruptHandler, Uart, UartRx, UartTx};
 use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::channel::Channel;
@@ -26,8 +27,7 @@ async fn main(spawner: Spawner) {
 
     let p = embassy_stm32::init(Default::default());
     let mut tx = Output::new(p.PF2, gpio::Level::High, gpio::Speed::VeryHigh);
-    // let _rx = Input::new(p.PA3, Pull::Up);
-    // let _tx = Output::new(p.PA2, Level::High, Speed::VeryHigh);
+    let rx = Input::new(p.PA3, Pull::Up);
 
     let config = Config::default();
     let sender = PIPE.sender();
@@ -38,9 +38,6 @@ async fn main(spawner: Spawner) {
     info!("starting echo");
     let mut v: Vec<u8, 38, u8> = Vec::new();
 
-    // let data = b"filip\r\n";
-    // let idle = &[0x13u8];
-
     loop {
         let slovko = "ahoj";
         info!("slovo: {}", slovko);
@@ -49,19 +46,7 @@ async fn main(spawner: Spawner) {
 
         info!("enkodovane, posielame do pipy...");
         nrz(&v, &sender).await;
-        // let current_send_allowed = SEND_ALLOWED.load(Ordering::Relaxed);
-        // let current_rec_allowed = REC_ALLOWED.load(Ordering::Relaxed);
-        // if current_rec_allowed == true {
-        //     if current_send_allowed {
-        //         if let Ok(stored_byte) = receiver.try_receive() {
-        //             // TODO
-        //             // let _ = tx.write(&[stored_byte]).await;
-        //         } else {
-        //             // TODO
-        //             // let _ = tx.write(data).await;
-        //         }
-        //     }
-        // }
+
         let _ = Timer::after(Duration::from_millis(1000));
         embassy_time::block_for(Duration::from_millis(1000));
     }
@@ -121,3 +106,12 @@ async fn bit_send(mut pin: Output<'static>) {
         ticker.next().await;
     }
 }
+
+#[embassy_executor::task]
+async fn bit_receive(mut pin: Input<'static>) {
+    let mut ticker = Ticker::every(Duration::from_millis(10));
+    loop {
+        // bitrate
+        ticker.next().await;
+    }
+}