diff --git a/2sem_uart_flow_ctrl/src/bin/main.rs b/2sem_uart_flow_ctrl/src/bin/main.rs
index b4d112d..4170815 100644
--- a/2sem_uart_flow_ctrl/src/bin/main.rs
+++ b/2sem_uart_flow_ctrl/src/bin/main.rs
@@ -29,32 +29,38 @@ fn main() -> ! {
     let mut buf = [0u8; 1];
     let mut send_allowed: bool = true;
     let mut rec_allowed: bool = true;
+    let data = b"filip\r\n";
+    let start_time = embassy_time::Instant::now();
+
     loop {
-        if usart.blocking_read(&mut buf).is_ok() {
-            let byte = buf[0];
-            match byte {
-                0x11 => {
-                    send_allowed = true;
-                    info!("Vysielanie povolené");
-                }
-                0x13 => {
-                    send_allowed = false;
-                    info!("Vysielanie zakázané");
-                }
-                _ => {
+        rec_allowed = (start_time.elapsed().as_secs() / 2) % 2 == 0;
+        if rec_allowed == true {
+            if usart.blocking_read(&mut buf).is_ok() {
+                let byte = buf[0];
+                match byte {
+                    0x11 => {
+                        send_allowed = true;
+                        info!("Vysielanie povolené");
+                    }
+                    0x13 => {
+                        send_allowed = false;
+                        info!("Vysielanie zakázané");
+                    }
+                    _ => {
+                    }
+                }
+            }
+            if send_allowed {
+                if let Ok(stored_byte) = receiver.try_receive() {
+                    unwrap!(usart.blocking_write(&[stored_byte]));
+                } else {
+                    unwrap!(usart.blocking_write(data));
+                }
+            } else {
+                for b in data {
+                    let _ = sender.try_send(*b);
                 }
             }
-        }
-
-        while let Ok(stored_byte) = receiver.try_receive() {
-            unwrap!(usart.blocking_write(&[stored_byte]));
-            unwrap!(usart.blocking_write(b" (pipe)\r\n"));
-        }
-        if send_allowed {
-            unwrap!(usart.blocking_write(&buf));
-            unwrap!(usart.blocking_write(b"a\r\n"));
-        } else {
-            // let _ = sender.try_send(byte);
         }
         let _ = Timer::after(Duration::from_millis(100));
     }