sending messages to the tui chat

mqtt_display/src/bin/main.rs

@@ -136,8 +136,8 @@ async fn main(spawner: Spawner) -> ! {
     spawner.spawn(mpu::task::mpu_task(mpu_i2c)).expect("spawn mpu_task");
 
     display::api::set_status("Booting...").await;
-    mqtt_subscribe("esp32/topic").await;
-    mqtt_publish("esp32/topic", b"online", QualityOfService::QoS1, false).await;
+    mqtt_subscribe("esp32/imu").await;
+    mqtt_publish("esp32/imu", b"online", QualityOfService::QoS1, false).await;
 
     display::api::set_status("Running").await;
     display::api::set_mqtt_status(true, 0).await;
@@ -171,8 +171,7 @@ async fn main(spawner: Spawner) -> ! {
                 }
                 imu_reading_count += 1;
                 
-                // CRITICAL FIX: show_imu is now non-blocking (uses try_send internally)
-                // This prevents display channel backpressure from blocking the main loop
+                // Show_imu is now non-blocking (uses try_send internally)
                 display::api::show_imu(reading);
                 
                 if imu_reading_count % MQTT_PUBLISH_DIVIDER == 0 {
@@ -228,7 +227,6 @@ async fn core1_network_task(
     // Signal core 0 that network is ready
     NETWORK_READY.signal(());
 
-    // Start MQTT on this core (it needs the stack)
     spawner.spawn(mqtt_task(stack)).ok();
 }
 
@@ -237,7 +235,7 @@ async fn handle_mqtt_message(msg: IncomingMsg) {
         match txt {
             "clear" => { display::api::clear().await; }
             "status" => { mqtt_publish("esp32/status", b"running", QualityOfService::QoS1, false).await; }
-            _ => {}
+            _ => { display::api::add_chat_message(txt).await; }
         }
     }
 }

mqtt_display/src/display/api.rs

@@ -27,8 +27,6 @@ pub(crate) fn receiver() -> Receiver<'static, CriticalSectionRawMutex, DisplayCo
     DISPLAY_CHANNEL.receiver()
 }
 
-// ─────────────────────────────────────────────────────────────────────────────
-
 /// Show IMU data - NON-BLOCKING to prevent backpressure deadlock
 pub fn show_imu(reading: ImuReading) {
     // CRITICAL FIX: Use try_send instead of send().await

mqtt_display/src/mqtt/client.rs

@@ -59,7 +59,7 @@ enum Command {
     Subscribe(String<TOPIC_MAX>),
 }
 
-// Standard command/info channels
+// Command/info channels
 static CMD_CHAN: Channel<CriticalSectionRawMutex, Command, COMMAND_QUEUE> = Channel::new();
 static EVT_CHAN: Channel<CriticalSectionRawMutex, IncomingMsg, EVENT_QUEUE> = Channel::new();
 
@@ -67,7 +67,7 @@ static EVT_CHAN: Channel<CriticalSectionRawMutex, IncomingMsg, EVENT_QUEUE> = Ch
 static IMU_LATEST: Mutex<CriticalSectionRawMutex, Option<Vec<u8, PAYLOAD_MAX>>> =
     Mutex::new(None);
 
-/// ---------- Public API ----------
+/// Public API
 
 /// Blocking publish for command/response messages.
 pub async fn mqtt_publish(topic: &str, payload: &[u8], qos: QualityOfService, retain: bool) {
@@ -113,7 +113,7 @@ pub fn mqtt_events(
     EVT_CHAN.receiver()
 }
 
-/// ---------- Internals ----------
+/// Internals
 
 fn truncate_str<const N: usize>(s: &str) -> String<N> {
     let mut h = String::new();
@@ -175,8 +175,6 @@ async fn handle_incoming(result: Result<(&str, &[u8]), ReasonCode>) -> Result<()
     Ok(())
 }
 
-/// ---------- Session Management ----------
-
 async fn run_one_session(
     stack: Stack<'static>,
     tcp_rx: &mut [u8],
@@ -214,7 +212,7 @@ async fn run_one_session(
     let mut ping_countdown: u32 = (KEEPALIVE_SECS * 10) as u32; // ticks until ping (100 ms each)
 
     loop {
-        // 1. Send latest IMU payload if available
+        // Send latest IMU payload if available
         if let Ok(mut guard) = IMU_LATEST.try_lock() {
             if let Some(payload) = guard.take() {
                 drop(guard);
@@ -244,12 +242,12 @@ async fn run_one_session(
             }
         }
 
-        // 2. Process any queued control commands
+        // Process any queued control commands
         while let Ok(cmd) = CMD_CHAN.try_receive() {
             handle_command(&mut client, cmd).await.map_err(|_| ())?;
         }
 
-        // 3. Check for incoming messages with timeout
+        // Check for incoming messages with timeout
         match with_timeout(Duration::from_millis(100), client.receive_message()).await {
             Ok(Ok((topic, payload))) => {
                 // Handle incoming message