Add card detection

2026-08-26 00:08:47 +08:00
parent 5c95cc40f7
commit 261b04fec3
69 changed files with 2178 additions and 5928 deletions
@@ -0,0 +1,74 @@
+use crate::{Error, Interface, Pn532, TargetInitStatus};
+use crate::commands::{PN532_COMMAND_TGGETDATA, PN532_COMMAND_TGINITASTARGET, PN532_COMMAND_TGSETDATA};
+use crate::error::StatusCode;
+
+impl<B: Interface> Pn532<B> {
+    /// Initialize the PN532 as a target using a raw command frame.
+    pub fn tg_init_as_target(
+        &mut self,
+        command: &[u8],
+        timeout_ms: u16,
+    ) -> Result<TargetInitStatus, Error<B::TransportError>> {
+        self.interface.write_command(command, &[])?;
+        match self.interface.read_response(&mut self.buffer, timeout_ms) {
+            Ok(_) => Ok(TargetInitStatus::Success),
+            Err(Error::Timeout) => Ok(TargetInitStatus::Timeout),
+            Err(_) => Ok(TargetInitStatus::Failed),
+        }
+    }
+
+    /// Initialize the PN532 as a target with the default LLCP parameters.
+    pub fn tg_init_as_target_default(
+        &mut self,
+        timeout_ms: u16,
+    ) -> Result<TargetInitStatus, Error<B::TransportError>> {
+        const COMMAND: [u8; 44] = [
+            PN532_COMMAND_TGINITASTARGET, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x01, 0xFE,
+            0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+            0xFF, 0xFF, 0x01, 0xFE, 0x0F, 0xBB, 0xBA, 0xA6, 0xC9, 0x89, 0x00, 0x00, 0x06, 0x46,
+            0x66, 0x6D, 0x01, 0x01, 0x10, 0x00,
+        ];
+        self.tg_init_as_target(&COMMAND, timeout_ms)
+    }
+
+    /// Retrieve data received from the initiator.
+    pub fn tg_get_data(&mut self, buf: &mut [u8]) -> Result<usize, Error<B::TransportError>> {
+        self.buffer[0] = PN532_COMMAND_TGGETDATA;
+        self.send(1)?;
+
+        let len = self.read_timeout(3000)?;
+        if len == 0 {
+            return Ok(0);
+        }
+        if self.buffer[0] != 0 {
+            return Err(Error::Status(StatusCode::from_repr(self.buffer[0]).unwrap()));
+        }
+        let data_len = len - 1;
+        let copy_len = data_len.min(buf.len());
+        buf[..copy_len].copy_from_slice(&self.buffer[1..1 + copy_len]);
+        Ok(copy_len)
+    }
+
+    /// Send data to the initiator.
+    pub fn tg_set_data(
+        &mut self,
+        header: &[u8],
+        body: &[u8],
+    ) -> Result<(), Error<B::TransportError>> {
+        if header.len() > crate::driver::PACKET_BUFFER_SIZE - 1 {
+            self.buffer[0] = PN532_COMMAND_TGSETDATA;
+            self.interface.write_command(&self.buffer[..1], header)?;
+        } else {
+            self.buffer[0] = PN532_COMMAND_TGSETDATA;
+            self.buffer[1..1 + header.len()].copy_from_slice(header);
+            self.interface
+                .write_command(&self.buffer[..1 + header.len()], body)?;
+        }
+
+        let len = self.read_timeout(3000)?;
+        if len == 0 || self.buffer[0] != 0 {
+            return Err(Error::Status(StatusCode::from_repr(self.buffer[0]).unwrap()));
+        }
+        Ok(())
+    }
+}