Detect serial port path automatically

red/src/jogger.rs

@@ -1,6 +1,6 @@
 use crate::gamepad::Gamepad;
 use crate::printer::gcode::{G0Command, G91Command};
-use crate::printer::{GcodeCommand, Printer};
+use crate::printer::{Printer};
 use euclid::{vec3, Vector3D};
 use futures::never::Never;
 use std::sync::Arc;

red/src/main.rs

@@ -5,7 +5,9 @@ use red::gamepad;
 use red::jogger;
 use red::printer::gcode::*;
 use red::printer::Printer;
+use std::path::Path;
 use std::time::Duration;
+use tokio_serial::SerialPortInfo;
 
 const DEFAULT_TTY: &str = "/dev/ttyUSB0";
 const I2C_ADDRESS_EXTENDER: u8 = 25;
@@ -35,9 +37,22 @@ const I2C_REGISTER_SPINDLE_SPEED: u8 = 0;
 #[tokio::main]
 async fn main() -> Never {
     println!("Entering App");
+    let serial_ports = tokio_serial::available_ports()
+        .expect("Could not list serial ports")
+        .into_iter()
+        .filter(|port| port.port_name.contains("ttyUSB"))
+        .collect::<Vec<SerialPortInfo>>();
+    let port = match serial_ports.len() {
+        1 => serial_ports.to_owned().pop().unwrap(),
+        0 => panic!("No USB serial port found! Is the green board disconnected or turned off?"),
+        _ => panic!("There are multiple USB serial ports and we have no way to check which one is the Marlin board!")
+    };
+    let port_path = Path::new("/dev").join(Path::new(&port.port_name).file_name().unwrap());
+    println!("Found serial port: {:?}", &port_path);
     let gamepad = gamepad::Gamepad::new().await.unwrap();
-    let printer = Printer::connect("/dev/ttyUSB2").await.unwrap();
+    let printer = Printer::connect(&port_path.as_os_str().to_string_lossy())
-    // TODO: Make printer do relative movements
+        .await
+        .unwrap();
     jogger::jog(gamepad, printer).await
 }
 

red/src/printer/mod.rs

@@ -14,7 +14,7 @@ use tokio_util::codec::{Decoder, Encoder};
 
 pub use gcode::{GcodeCommand, GcodeReply};
 
-use crate::printer::gcode::{G91Command, M997Command};
+use crate::printer::gcode::G91Command;
 
 use self::gcode::GcodeReplyError;