basic TMTC interaction established

fsrc-core/src/hal/host/udp_server.rs

@@ -42,10 +42,10 @@ impl<E> UdpTcServer<E> {
         let res = match self.socket.recv_from(&mut self.recv_buf) {
             Ok(res) => res,
             Err(e) => {
-                if e.kind() != ErrorKind::WouldBlock {
+                return if e.kind() == ErrorKind::WouldBlock {
-                    return Err(ReceiveResult::WouldBlock);
+                    Err(ReceiveResult::WouldBlock)
                 } else {
-                    return Err(ReceiveResult::OtherIoError(e));
+                    Err(ReceiveResult::OtherIoError(e))
                 }
             }
         };

fsrc-example/src/bin/client.rs

@@ -2,6 +2,7 @@ use fsrc_example::{OBSW_SERVER_ADDR, SERVER_PORT};
 use spacepackets::tc::PusTc;
 use spacepackets::SpHeader;
 use std::net::{IpAddr, SocketAddr, UdpSocket};
+use std::time::Duration;
 
 fn main() {
     let mut buf = [0; 32];
@@ -13,4 +14,12 @@ fn main() {
     client
         .send_to(&buf[0..size], &addr)
         .expect(&*format!("Sending to {:?} failed", addr));
+    client
+        .set_read_timeout(Some(Duration::from_secs(2)))
+        .expect("Setting read timeout failed");
+    if let Ok(len) = client.recv(&mut buf) {
+        println!("Received TM with {} bytes", len);
+    } else {
+        println!("No reply received for 2 seconds or timeout");
+    }
 }

fsrc-example/src/bin/obsw.rs

@@ -11,8 +11,8 @@ use spacepackets::tm::{PusTm, PusTmSecondaryHeader};
 use spacepackets::{CcsdsPacket, SpHeader};
 use std::net::{IpAddr, SocketAddr};
 use std::sync::{mpsc, Arc, Mutex};
-use std::sync::mpsc::TryRecvError;
 use std::thread;
+use std::time::Duration;
 
 const PUS_APID: u16 = 0x02;
 
@@ -96,12 +96,12 @@ struct TmStore {
 
 impl TmStore {
     fn add_pus_tm(&mut self, pus_tm: &PusTm) -> StoreAddr {
-        let (addr, mut buf) = self
+        let (addr, buf) = self
             .pool
             .free_element(pus_tm.len_packed())
             .expect("Store error");
         pus_tm
-            .write_to(&mut buf)
+            .write_to(buf)
             .expect("Writing PUS TM to store failed");
         addr
     }
@@ -144,11 +144,11 @@ fn main() {
         let mut udp_tmtc_server = UdpTmtcServer {
             udp_tc_server,
             tm_rx: tm_server_rx,
-            tm_store: tm_store.clone(),
+            tm_store
         };
         loop {
-            let res = udp_tmtc_server.udp_tc_server.try_recv_tc();
+            loop {
-            match res {
+                match udp_tmtc_server.udp_tc_server.try_recv_tc() {
                     Ok(_) => (),
                     Err(e) => match e {
                         ReceiveResult::ReceiverError(e) => match e {
@@ -161,23 +161,33 @@ fn main() {
                         },
                         ReceiveResult::OtherIoError(e) => {
                             println!("IO error {e}");
+                            break;
                         }
                         ReceiveResult::WouldBlock => {
                             if let Some(recv_addr) = udp_tmtc_server.udp_tc_server.last_sender() {
                                 // TODO: Send TM Here
-                            match udp_tmtc_server.tm_rx.try_recv() {
+                                while let Ok(addr) = udp_tmtc_server.tm_rx.try_recv() {
-                                Ok(addr) => {
+                                    let mut store_lock = udp_tmtc_server
-                                    udp_tmtc_server.tm_store.lock().expect("Locking TM store failed").pool.read()
+                                        .tm_store
-                                    udp_tmtc_server.udp_tc_server.socket.send_to()
+                                        .lock()
-                                }
+                                        .expect("Locking TM store failed");
-                                Err(_) => {}
+                                    let pg = store_lock.pool.read_with_guard(addr);
+                                    let buf = pg.read().expect("Error reading TM pool data");
+                                    println!("Sending TM");
+                                    udp_tmtc_server
+                                        .udp_tc_server
+                                        .socket
+                                        .send_to(buf, recv_addr)
+                                        .expect("Sending TM failed");
                                 }
                             }
-
+                            break;
                         }
                     },
                 }
             }
+            thread::sleep(Duration::from_millis(400));
+        }
     });
     let jh1 = thread::spawn(move || {
         let tm_funnel = TmFunnel {
@@ -185,9 +195,7 @@ fn main() {
             tm_funnel_rx,
         };
         loop {
-            let res = tm_funnel.tm_funnel_rx.recv();
+            if let Ok(addr) = tm_funnel.tm_funnel_rx.recv() {
-            if res.is_ok() {
-                let addr = res.unwrap();
                 tm_funnel
                     .tm_server_tx
                     .send(addr)