add timeout to reading (waiting 200ms before emitting error)

src/serial.rs

@@ -6,6 +6,7 @@ use std::{
         Arc,
     },
     thread::{self, JoinHandle},
+    time::Duration,
 };
 
 use hashbrown::HashMap;
@@ -83,7 +84,11 @@ impl SerialQueue {
     /// Open the serial port and start a thread to write data as soon as it is
     /// available (by using a channel)
     fn open(port: &str, baudrate: u32) -> SResult<Self> {
-        let serial = Arc::new(Mutex::new(serialport::new(port, baudrate).open()?));
+        let serial = Arc::new(Mutex::new(
+            serialport::new(port, baudrate)
+                .timeout(Duration::from_millis(200))
+                .open()?,
+        ));
         let (tx, rx) = channel::<Vec<u8>>();
         let ser = Arc::clone(&serial);
         let _handle = thread::spawn(move || {