add timeout when txing

src/radio.rs

@@ -5,7 +5,10 @@ use rppal::{
     hal::Delay,
     spi::{Bus, Mode, SlaveSelect, Spi},
 };
-use std::{thread, time::Duration};
+use std::{
+    thread,
+    time::{Duration, Instant},
+};
 use tokio::sync::mpsc::{error::TryRecvError, Receiver, Sender};
 
 pub const MAX_PACKET_LEN: usize = 8191;
@@ -89,10 +92,18 @@ impl RadioManager {
     fn send_packet(&mut self, data: &[u8]) -> anyhow::Result<()> {
         self.radio.start_tx(data).map_err(|e| anyhow!("{e:?}"))?;
 
+        const TIMEOUT: Duration = Duration::from_secs(10);
+
+        let start_time = Instant::now();
         while !self.radio.is_idle() {
             self.radio
                 .interrupt(None, Some(data))
                 .map_err(|e| anyhow!("{e:?}"))?;
+
+            if start_time + TIMEOUT < Instant::now() {
+                bail!("Timeout while transmitting");
+            }
+
             thread::sleep(Duration::from_millis(25));
         }