Upgrade rust edition

red/Cargo.toml

@@ -1,7 +1,7 @@
 [package]
 name = "red"
 version = "0.1.0"
-edition = "2021"
+edition = "2024"
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
@@ -13,5 +13,3 @@ i2c-linux = "0.1.2"
 lazy_static = "1.4.0"
 regex = "1.6.0"
 serialport = "4.6.1"
-tokio = { version = "1.21.0", features = ["full"] }
-

red/src/spindle/mod.rs

@@ -26,7 +26,7 @@ const I2C_REGISTER_SPINDLE_SPEED: u8 = 0;
 //  SMBUS_I2C_BLOCK
 //  SMBUS_EMUL
 
-pub async fn write_to_spindle() -> Never {
+pub fn write_to_spindle() -> Never {
     let mut i2c = I2c::from_path("/dev/i2c-0").unwrap();
     let mut value = 0;
     println!("functionality: {:?}", i2c.i2c_functionality());
@@ -38,6 +38,6 @@ pub async fn write_to_spindle() -> Never {
             Ok(()) => println!("Wrote {} successfully", value),
             Err(e) => println!("Error writing to device: {}", e),
         };
-        tokio::time::sleep(Duration::from_secs(1)).await;
+        std::thread::sleep(Duration::from_secs(1));
     }
 }