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src/device.rs

@@ -42,6 +42,8 @@ impl Device{
         match response{
             Some(response_value)=> {
                 match response_value{
+                    //If we got back a password prompt, that's a bad place to be in. Send a
+                    //newline to failout of the 
                     Response::PasswordPrompt=>{
                         usb_port.write_to_device(Command::Newline);
                         _ = usb_port.read_from_device(None);

src/gpio_facade.rs

@@ -9,9 +9,12 @@ pub struct GpioPins{
 impl GpioPins{
     pub fn new() -> Self {
         let mut output = Self { unassigned_addresses:Vec::new() };
+        //For each of the relay addresses...
         for pin in RELAY_ADDRESSES.iter(){
             match Gpio::new(){
                 Ok(gpio_object) =>{
+                    //Get the relevant GPIO pin, initialise it to be off, store the address, and
+                    //drop the pin so the Device object can pick it back up
                     match gpio_object.get(pin.clone()){
                         Ok(pin_object)=>{
                             _ = pin_object.into_output_low();