fixed netcode

inside/src/main.rs

@@ -186,9 +186,8 @@ async fn main(spawner: Spawner) {
                     pwm.set_config(&c);
                 },
                 'B' => {
-                    let mut buf: [u8;8] = [0;8];
+                    let buf: [u8;8] =  hex::FromHex::from_hex(segs.next().unwrap()).unwrap();
-                    buf.copy_from_slice(segs.next().unwrap());
+                    let card: u64 = u64::from_ne_bytes(buf);
-                    let card = u64::from_ne_bytes(buf);
                     info!("card {card:#16x}");
 
                     open_door(&mut c, &mut pwm).await;

outside/Cargo.lock

@@ -730,6 +730,7 @@ source = "git+https://github.com/embassy-rs/embassy#0ede8479dc4c6a58cfab0a5d4df4
 dependencies = [
  "cfg-if",
  "critical-section",
+ "defmt",
  "embedded-io-async",
  "futures-util",
  "heapless 0.8.0",
@@ -1556,6 +1557,7 @@ dependencies = [
  "embassy-net",
  "embassy-net-wiznet",
  "embassy-rp",
+ "embassy-sync 0.6.0 (git+https://github.com/embassy-rs/embassy)",
  "embassy-time",
  "embassy-usb",
  "embassy-usb-logger",

outside/src/main.rs

@@ -225,8 +225,12 @@ async fn main(spawner: Spawner) {
         info!("Connected to {:?}", socket.remote_endpoint());
         control.gpio_set(0, true).await;
 
-        socket.write(b"C ").await.unwrap();
+        let mut data: [u8;18] = [b' ';18];
-        socket.write(&card.to_ne_bytes()).await.unwrap();
+        data[0] = b'B';
+        data[1] = b' ';
+        hex::encode_to_slice(&card.to_ne_bytes(), &mut data[2..]).unwrap();
+
+        socket.write_all(&data).await.unwrap();
         info!("wrote to {:?}", socket.remote_endpoint());
 
         socket.close();