some fixes

src/radio.rs

@@ -21,7 +21,7 @@ type MyDelay = Delay<TIM5, 1000000>;
 type Radio = Rf4463<Spi<SPI1>, SdnPin, CsPin, MyDelay>;
 
 pub struct RadioManager<'a> {
-    pub radio: Radio,
+    radio: Radio,
     buf: &'a mut [u8; MAX_PACKET_LEN],
     enable_digipeating: bool,
 }
@@ -64,14 +64,17 @@ impl<'a> RadioManager<'a> {
                 .map_err(TransferError::SpiError)?;
         }
 
-        self.radio.interrupt(Some(self.buf), None).unwrap();
+        self.radio.interrupt(Some(self.buf), None)?;
 
-        if let Some(data) = self.radio.finish_rx(self.buf).unwrap() {
+        if let Some(data) = self
+            .radio
+            .finish_rx(self.buf)
+            .map_err(TransferError::SpiError)?
+        {
             if self.enable_digipeating {
                 if let Some((callsign, ssid)) = ident {
                     let mut buf = [0; MAX_PACKET_LEN];
-                    let p = Packet::fully_decode(data.data(), &mut buf);
-                    if let Ok(packet) = p {
+                    if let Ok(packet) = Packet::fully_decode(data.data(), &mut buf) {
                         self.handle_packet_rx(led, packet, callsign, ssid);
                     }
                 }