fix reconnection bug

Author: hacknus

src/gui.rs

@@ -525,7 +525,11 @@ impl MyApp {
                     if !devices.contains(&self.device) {
                         self.device.clear();
                     }
-
+                    if let Ok(dev) = self.device_lock.read() {
+                        if !dev.name.is_empty() {
+                            self.device = dev.name.clone();
+                        }
+                    }
                     ui.add_space(10.0);
                     ui.horizontal(|ui| {
                         ui.label("Device");

src/serial.rs

@@ -197,7 +197,12 @@ fn get_device(
             *write_guard = devices.clone();
         }
 
+        // do reconnect
         if devices.contains(&last_connected_device.name) {
+            if let Ok(mut device) = device_lock.write() {
+                device.name = last_connected_device.name.clone();
+                device.baud_rate = last_connected_device.baud_rate;
+            }
             return last_connected_device.clone();
         }