Full working creature card scan

Cargo.lock

@@ -125,6 +125,7 @@ dependencies = [
  "esp-rtos",
  "ili9341",
  "log",
+ "ndef",
  "pn532",
  "smoltcp",
 ]
@@ -255,6 +256,26 @@ dependencies = [
  "syn 2.0.119",
 ]
 
+[[package]]
+name = "derive_more"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4a9b99b9cbbe49445b21764dc0625032a89b145a2642e67603e1c936f5458d05"
+dependencies = [
+ "derive_more-impl",
+]
+
+[[package]]
+name = "derive_more-impl"
+version = "1.0.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cb7330aeadfbe296029522e6c40f315320aba36fc43a5b3632f3795348f3bd22"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
 [[package]]
 name = "digest"
 version = "0.10.7"
@@ -1186,6 +1207,15 @@ version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8d5439c4ad607c3c23abf66de8c8bf57ba8adcd1f129e699851a6e43935d339d"
 
+[[package]]
+name = "ndef"
+version = "0.5.0"
+dependencies = [
+ "derive_more",
+ "heapless 0.8.0",
+ "rustversion",
+]
+
 [[package]]
 name = "num-derive"
 version = "0.4.2"

Cargo.toml

@@ -52,6 +52,7 @@ embedded-hal-bus = "0.3.0"
 embedded-graphics = "0.8.2"
 embedded-graphics-core = "0.4.1"
 pn532 = "0.5.0"
+ndef = { version = "0.5.0", path = "./ndef-rs" }
 
 
 # For fine tuning these settings, please refer to https://doc.rust-lang.org/cargo/reference/profiles.html

src/bin/main.rs

@@ -166,17 +166,22 @@ fn main() -> ! {
         ) {
             Ok(uid) => {
                 info!("uid = {uid:?}");
-                for i in (4..=231) {
+                for i in (0x04..=230) {
-                    let result = pn532.process(&Request::ntag_read(i), 17, ms_1000).unwrap();
+                    let mut parse_result = Err(());
-                    let success = result.first().is_some_and(|x| *x == 0);
+                    while parse_result.is_err() {
-                    if success {
+                        let Ok(result) = pn532.process(&Request::ntag_read(i), 17, ms_1000) else {
-                        // info!("page {i}: {:02x?}", result);
+                            continue;
-                        data.extend(&result[1..5]);
+                        };
-                    } else {
+                        parse_result = parse_nfc(i, result);
-                        info!("err  {i}: {:02x?}", result);
                     }
+                    let bytes = parse_result.unwrap();
+                    data.extend(bytes);
                 }
                 info!("Full data: {data:02x?}");
+                match ndef::Message::try_from(&data[4..4 + 883]) {
+                    Ok(m) => info!("Parsed: {m:02x?}"),
+                    Err(e) => info!("Failed to parse: {e:?}"),
+                }
                 data.clear();
             }
             Err(e) => {
@@ -191,6 +196,19 @@ fn main() -> ! {
     // for inspiration have a look at the examples at https://github.com/esp-rs/esp-hal/tree/esp-hal-v1.1.0/examples
 }
 
+fn parse_nfc(iteration: u8, bytes: &[u8]) -> Result<[u8; 4], ()> {
+    let success = bytes.first().is_some_and(|x| *x == 0);
+    if success {
+        // info!("page {i}: {:02x?}", result);
+        let mut arr = [0; 4];
+        arr.copy_from_slice(&bytes[1..5]);
+        Ok(arr)
+    } else {
+        info!("err  {iteration}: {:02x?}", bytes);
+        Err(())
+    }
+}
+
 struct TimerWrapper {
     // TODO Is that timer accurate enough?
     start: Instant,