From bfc28c532fb6c9918d695b9c22d4c992e8c4c21f Mon Sep 17 00:00:00 2001
From: hodasemi <michaelh.95@t-online.de>
Date: Sat, 19 Nov 2022 06:16:03 +0100
Subject: [PATCH] Fix reset from ui

---
 rust/serial_reader/src/main.rs | 2 ++
 rust/serial_reader/src/port.rs | 4 +++-
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/rust/serial_reader/src/main.rs b/rust/serial_reader/src/main.rs
index ed33e69..47b64cc 100644
--- a/rust/serial_reader/src/main.rs
+++ b/rust/serial_reader/src/main.rs
@@ -73,6 +73,8 @@ fn main() {
                     }
                 }
 
+                drop(port_lock);
+
                 thread::sleep(Duration::from_millis(10));
             }
         });
diff --git a/rust/serial_reader/src/port.rs b/rust/serial_reader/src/port.rs
index 81b9468..2793b70 100644
--- a/rust/serial_reader/src/port.rs
+++ b/rust/serial_reader/src/port.rs
@@ -69,7 +69,7 @@ impl Port {
     }
 
     fn loop_usb_devices(usb_device: UsbId) -> Result<String> {
-        loop {
+        for _ in 0..3 {
             if let Some(device) = Self::find_macroboard(&usb_device)? {
                 return Ok(device);
             }
@@ -81,6 +81,8 @@ impl Port {
 
             std::thread::sleep(Duration::from_secs(2));
         }
+
+        Err(anyhow!("no device found"))
     }
 
     fn find_macroboard(usb_device: &UsbId) -> Result<Option<String>> {