Working snapshot.

src/main.rs

@@ -22,16 +22,15 @@ struct Cli {
 }
 
 // Function to get the location
-fn get_loc(port:String, fmt:String) -> String {
-
+fn get_loc(port: String, fmt: String) -> String {
     let mut nmea = Nmea::default();
 
     // Harcode port for dev
     //let port_name = "/dev/tty.usbmodem1301";
     let port_name = port;
 
-       //fn read_loc(com: &str) -> &str {
-        //println!("Reading from {port_name}");
+    //fn read_loc(com: &str) -> &str {
+    //println!("Reading from {port_name}");
 
     let port = serialport::new(port_name, 9600)
         .timeout(Duration::from_millis(1000))
@@ -67,11 +66,20 @@ fn get_loc(port:String, fmt:String) -> String {
                             let date = Local::now();
                             //println!("{}, {lat}, {lon}", date.format("%Y-%m-%d %H:%M:%S"));
                             if fmt == "csv" {
-                                return format!("{},{:.8},{:.8}", date.format("%Y-%m-%d %H:%M:%S"), lat, lon);
+                                return format!(
+                                    "{},{:.8},{:.8}",
+                                    date.format("%Y-%m-%d %H:%M:%S"),
+                                    lat,
+                                    lon
+                                );
                             } else if fmt == "ssv" {
-                               return format!("\"{}\" {:.8} {:.8}", date.format("%Y-%m-%d %H:%M:%S"), lat, lon);
+                                return format!(
+                                    "\"{}\" {:.8} {:.8}",
+                                    date.format("%Y-%m-%d %H:%M:%S"),
+                                    lat,
+                                    lon
+                                );
                             }
-                            
                         }
                     }
                 }
@@ -79,13 +87,18 @@ fn get_loc(port:String, fmt:String) -> String {
             }
         }
     } else {
-        return format!("wut");
+        // https://github.com/serialport/serialport-rs#listing-available-ports
+        let ports = serialport::available_ports().expect("No ports found!");
+        println!("Available Ports:");
+        for p in ports {
+            println!("{}", p.port_name);
+        }
+
+        return format!("\nCould not connect to port. Is it listed above?");
     }
 }
 
-
 fn main() {
-
     // Arguments
     let cli = Cli::parse();
 
@@ -110,10 +123,11 @@ fn main() {
         } //todo!()
     };
 
-
     // Run the function
-    let result = get_loc(com, fmt);
-    println!("{result}");
-
+    // Max rate is about 1 measurement per second
+    //loop {
+        let result = get_loc(com.clone(), fmt.clone());
+        println!("{result}");
+    //}
 
 }