Fix M114 throughput issues

We must wait for Marlin to boot before sending any commands. Otherwise
it doesn't reply anymore.

green/Marlin

@@ -1 +1 @@
-Subproject commit 076afd2c617110c8f2e7df062329e32bd0f0269b
+Subproject commit b58bbb57e5ca2a5e6d7af0ade2c191b2e89f6081

red/justfile

@@ -3,5 +3,5 @@ build:
 
 rrun:
     #scp -r ./src olimex@muele.local:red/
-    rsync -rv --filter=':- .gitignore' ../red olimex@muele.local: 
+    rsync -rvu --filter=':- .gitignore' ../red olimex@muele.local: 
-    ssh olimex@muele.local "cd red; /home/olimex/.cargo/bin/cargo run"
+    ssh olimex@muele.local "cd red; /home/olimex/.cargo/bin/cargo run;"

red/src/main.rs

@@ -57,21 +57,20 @@ async fn main() -> tokio_serial::Result<()> {
     let (mut writer, mut reader) = LineCodec.framed(port).split();
     println!("Starting read.");
     let reader_task = async move {
+        let mut counter = 0;
         while let Some(line_result) = reader.next().await {
             let line = line_result.expect("Failed to read line");
-            println!("{}", line);
+            if line.contains("ok") || line.contains("Loaded") {
-        }
-    };
-    let writer_task = async move {
-        loop {
                 if let Err(e) = writer.send("M114\n".into()).await {
                     println!("{:?}", e);
                     break;
                 }
-            tokio::time::sleep(std::time::Duration::from_secs(1)).await;
+            }
+            counter += 1;
+            println!("updates received: {}", counter);
         }
     };
-    tokio::join!(writer_task, reader_task);
+    reader_task.await;
 
     Ok(())
 }