Temperature Alert

micro_ondes/esp_lora/lib/microwaveScreen.py

@@ -2,6 +2,7 @@ import time
 from shared.cookingState import CookingState, CookingStates
 from shared import config
 import framebuf
+from shared.microwave_state import MicrowaveState
 
 # Icon and bitmaps
 image_weather_frost_bits = bytearray(b'\x01\x00\x13\x901\x18s\x9c\x09 \x05@S\x94\xfe\xfeS\x94\x05@\x09 s\x9c1\x18\x13\x90\x01\x00\x00\x00')
@@ -10,12 +11,16 @@ image_CoolHiSmall_bits = bytearray(b'\x1f\xff\xc0?\xff\xe0\x7f\xff\xf0\xff\xdf\x
 image_CoolLoSmall_bits = bytearray(b'\x1f\xff\xc0 \x00 @\x00\x10\x80 \x08\x80\xa8\x08\x82r\x08\x86#\x08\x81$\x08\x88\xa8\x88\x84q\x08\x9f\xff\xc8\x84q\x08\x88\xa8\x88\x81$\x08\x86#\x08\x82r\x08\x80\xa8\x08\x80 \x08@\x00\x10 \x00 \x1f\xff\xc0')
 image_music_sound_wave_bits = bytearray(b'\x00\x00\x00\x02\x00\x00\x02 \x00\x02 \x00\x02 \x00\x0a(\x00\x0a\xa8\x00*\xa8\x00\xaa\xaa\x80\x0a\xaa\x00\x0a\xa8\x00\x0a \x00\x02 \x00\x02 \x00\x02\x00\x00\x00\x00\x00')
 image_weather_temperature_bits = bytearray(b'\x1c\x00\x22\x00+\x00*\x00+\x00*\x00+\x00*\x00*\x00I\x00\x9c\x80\xae\x80\xbe\x80\x9c\x80A\x00>\x00')
+image_camera_bits = bytearray(b'\x00x\x000\x84\x00\x7f{\x00\xc0\x00\x80\x91\xc6\x80\x860\x80\x85\xd0\x80\x8a(\x80\x8a(\x80\x8a(\x80\x85\xd0\x80\x860\x80\x91\xc6\x80\xc0\x00\x80\x7f\xff\x00\x00\x00\x00')
+image_cloud_sync_bits = bytearray(b'\x00\x00\x00\x07\xc0\x00\x08 \x00\x10\x10\x000\x08\x00@\x0e\x00\x80\x01\x00\x82 \x80G \x80/\xaf\x00\x02 \x00\x02\xf8\x00\x02p\x00\x02 \x00\x00\x00\x00\x00\x00\x00')
 fb_image_weather_frost_bits = framebuf.FrameBuffer(image_weather_frost_bits, 15, 16, framebuf.MONO_HLSB)
 fb_image_CoolHiSmall_bits = framebuf.FrameBuffer(image_CoolHiSmall_bits, 21, 21, framebuf.MONO_HLSB)
 fb_image_weather_temperature_bits = framebuf.FrameBuffer(image_weather_temperature_bits, 9, 16, framebuf.MONO_HLSB)
 fb_image_Alert_bits = framebuf.FrameBuffer(image_Alert_bits, 9, 8, framebuf.MONO_HLSB)
 fb_image_music_sound_wave_bits = framebuf.FrameBuffer(image_music_sound_wave_bits, 17, 16, framebuf.MONO_HLSB)
 fb_image_CoolLoSmall_bits = framebuf.FrameBuffer(image_CoolLoSmall_bits, 21, 21, framebuf.MONO_HLSB)
+fb_image_camera_bits = framebuf.FrameBuffer(image_camera_bits, 17, 16, framebuf.MONO_HLSB)
+fb_image_cloud_sync_bits = framebuf.FrameBuffer(image_cloud_sync_bits, 17, 16, framebuf.MONO_HLSB)
 
 # Constants
 CHARACTER_WIDTH = 6
@@ -70,44 +75,54 @@ class MicrowaveScreen:
         
         self.display.fill_rect(x, y, fill_width, height, color)
         
-    def update(self, cooking_state: CookingState | None, defrost_mode: bool = False):
+    def update(self, cooking_state: CookingState | None, defrost_mode: bool = False, microwave_state: str | None = None):
         self.flick()
         
         # self.lastUpdateTime = time.time() # Not Used right now
         
-        if not cooking_state or cooking_state.state == CookingStates.IDLE: # Is not currently cooking
+        if (not microwave_state or microwave_state == MicrowaveState.DONE) and (not cooking_state or cooking_state.state == CookingStates.IDLE): # Is not currently cooking
             self.h_centered_text("Ready !", 28, 1)
         else:    
             # Screen center
-            if cooking_state.state == CookingStates.STIRRING_REQUIRED:
+            if cooking_state and cooking_state.state == CookingStates.STIRRING_REQUIRED:
                 self._message("Pls Stir", True)
-            elif cooking_state.state == CookingStates.ALERT:
-                self._message("Alert !", True)
-            elif cooking_state.state == CookingStates.DONE:
+            elif cooking_state and cooking_state.state == CookingStates.ALERT:
+                # nothing to do, the alert will be displayed by the alert manager
+                return
+            elif cooking_state and cooking_state.state == CookingStates.DONE:
                 self._message("Done !", False)
-            else: # Progress bar
+            elif microwave_state and microwave_state == MicrowaveState.ANALYZING:
+                self.display.blit(fb_image_camera_bits, 56, 24)
+                self._secondary_message("Analyzing...", False)
+            elif microwave_state and microwave_state == MicrowaveState.WAITING_FOR_CLOUD:
+                self.display.blit(fb_image_cloud_sync_bits, 55, 24)
+                self._secondary_message("Receiving...", False)
+            elif microwave_state and microwave_state == MicrowaveState.ALERT:
+                # nothing to do, the alert will be displayed by the alert manager
+                pass
+            elif cooking_state: # Progress bar
                 elapsed_time = cooking_state.get_elapsed_time()
                 estimated_progress = elapsed_time / (elapsed_time + cooking_state.estimated_remaining_time)
                 self._progressBar(estimated_progress, 21, 25)
             
             # Estimated remaining time
-            if cooking_state.paused:
+            if cooking_state and cooking_state.paused:
                 self.h_centered_text("Paused", 40, 1)
-            elif cooking_state.state != CookingStates.DONE:
+            elif cooking_state and cooking_state.state != CookingStates.DONE:
                 remaining_time = int(cooking_state.estimated_remaining_time)
                 minutes = remaining_time // 60
                 seconds = remaining_time % 60
                 self.h_centered_text(f"{minutes:02}:{seconds:02}", 40, 1)
             
             # Current dish temperature
-            if cooking_state.current_dish_temp is not None and cooking_state.current_dish_temp is not 0.0:
+            if cooking_state and  cooking_state.current_dish_temp is not None and cooking_state.current_dish_temp is not 0.0:
                 self.display.blit(fb_image_weather_temperature_bits, 27, 2)
                 self.display.text(str(int(cooking_state.current_dish_temp)), 37, 6, 1)
                 self.display.ellipse(54, 6, 1, 1, 1, False)
                 self.display.text("C", 56, 6, 1)
 
             # Power level
-            if cooking_state.power_level is not None:
+            if cooking_state and cooking_state.power_level is not None:
                 self.display.blit(fb_image_music_sound_wave_bits, 74, 2)
                 self.display.text(f"{cooking_state.power_level}W", 92, 6, 1)
         if defrost_mode:
@@ -118,12 +133,18 @@ class MicrowaveScreen:
         self.show()
         pass
         
-    def _message(self, text, alert):
-        self.display.fill_rect(0, 27, self.width, CHARACTER_HEIGHT + 4, 1)
+    def _message_at(self, y, text, alert):
+        self.display.fill_rect(0, y, self.width, CHARACTER_HEIGHT + 4, 1)
         if alert:
-            self.display.blit(fb_image_Alert_bits, 10, 29)
-            self.display.blit(fb_image_Alert_bits, self.width - 10, 29)
-        self.h_centered_text(text, 29, 0)
+            self.display.blit(fb_image_Alert_bits, 1, y+2)
+            self.display.blit(fb_image_Alert_bits, self.width - 10, y+2)
+        self.h_centered_text(text, y+2, 0)
+        
+    def _message(self, text, alert):
+        self._message_at(27, text, alert)
+        
+    def _secondary_message(self, text, alert):
+        self._message_at(40, text, alert)
         
     def message(self, text, alert):
         # self.flick()

micro_ondes/esp_lora/main.py

@@ -1,8 +1,6 @@
 import gc
 import sys
 import time
-import _thread
-from lib.microwaveScreen import MicrowaveScreen
 import uasyncio as asyncio
 from machine import Pin, SoftI2C
 import ssd1306
@@ -18,6 +16,9 @@ from shared.sensors import RGBLED
 from shared.logging import log
 from shared.lora_device import LoraCommands
 from shared.alerts import Alert, AlertType, AlertManager
+from shared.microwave_state import MicrowaveState
+from shared.payloads import lora_new_alert
+from lib.microwaveScreen import MicrowaveScreen
 
 # --- READ DEVICE ID ---
 try:
@@ -29,6 +30,7 @@ except Exception:
 # --- GLOBAL VARIABLES ---
 cooking_state = None
 cooking_start_time = None  # Track start timestamp
+microwave_state: str = None
 data_queue = SafeQueue()
 lora = None
 uart_device = None
@@ -75,7 +77,7 @@ def send_cooking_update(state=None, start_time=None, estimated_remaining_time=No
 def on_new_alert(alert: Alert):
     global microwave_screen
     print(f"[Alert Manager] New alert received: {alert.to_dict()}")
-    microwave_screen.message(alert.message, True)
+    microwave_screen.message(alert.small_message if alert.small_message else alert.message, True)
 
 def init_hardware():
     """Initializes all hardware components."""
@@ -110,10 +112,9 @@ def init_hardware():
 
     print(f"[Main] ESP32 initialized with ID: '{DEVICE_ID}' (Type: {deviceTypes.DEVICE_TYPES['MICROWAVE']})")
 
-
-# --- DEDICATED LORA HARDWARE THREAD ---
-def lora_hardware_thread():
-    """Runs in a separate OS thread to keep the LoRa radio in continuous RX mode."""
+# --- ASYNC LORA TASK (REPLACES _THREAD) ---
+async def lora_rx_and_heartbeat_task():
+    """Replaces the hardware OS thread with a non-blocking async task to avoid SPI collisions."""
     last_heartbeat_time = 0
     
     while True:
@@ -122,19 +123,22 @@ def lora_hardware_thread():
         # 1. Send periodic heartbeat
         if now - last_heartbeat_time >= config.LORA_HEARTBEAT_INTERVAL:
             last_heartbeat_time = now
-            log("\n[LoRa Thread] Sending Heartbeat...")
+            log("\n[LoRa Task] Sending Heartbeat...")
             if lora:
                 lora.send(PING_PAYLOAD)
+                # CRITICAL: Force the radio chip out of Standby mode and back into RX mode
+                if hasattr(lora, 'receive'):
+                    lora.receive()
         
-        # 2. Blocking 300ms RX listen window (keeps radio actively listening)
+        # 2. Listen for incoming packets (Must be longer than LoRa Time-on-Air)
         if lora:
-            paquet = lora.receive_reliable(timeout_ms=300)
+            paquet = lora.receive_reliable(timeout_ms=500) 
             if paquet is not None:
-                log(f"[LoRa Thread] New Packet Received: {paquet}")
+                log(f"[LoRa Task] New Packet Received: {paquet}")
                 data_queue.put(paquet)
         
-        time.sleep_ms(10)
-
+        # Give control back to event loop
+        await asyncio.sleep_ms(10)
 
 # --- COOKING STATE CALLBACKS ---
 def cooking_state_temperature_provider():
@@ -166,6 +170,21 @@ def cooking_state_temperature_provider():
         temps = [float(current_temp[0]), float(current_temp[1])]
         last_temp = [temps[0], temps[1]]
         current_temp = [None, None]
+        
+        if config.DEBUG_TEMPERATURE_ALERT or temps[0] > config.MAX_ALLOWED_TEMPERATURE_COOKING_COMPARTMENT or temps[1] > config.MAX_ALLOWED_TEMPERATURE_TECHNICAL_COMPARTMENT:
+            print(f"[CookingState] ALERT: Unsafe temperature detected! Dish: {temps[0]}°C, Ambient: {temps[1]}°C")
+            # Send alert to orchestrator via LoRa
+            alert = Alert(
+                AlertType.TEMPERATURE_ALERT,
+                f"Unsafe temperature detected! Dish: {temps[0]}/{config.MAX_ALLOWED_TEMPERATURE_COOKING_COMPARTMENT}°C, Ambient: {temps[1]}/{config.MAX_ALLOWED_TEMPERATURE_TECHNICAL_COMPARTMENT}°C",
+                small_message=f"Temp too high"
+            )
+            alert_manager.add_alert(alert)
+            if lora:
+                lora.send_reliable(lora_new_alert(alert, with_message=True), max_retries=5)
+            cooking_state.set_state(cookingState.CookingStates.ALERT)
+            cooking_state.pause()
+        
         return temps
 
     # 4. Fallback: Use last valid reading
@@ -179,7 +198,7 @@ def cooking_state_on_state_change(state):
     global cooking_start_time
     print(f"[CookingState] State changed to: {state.state}")
     
-    if state.paused or state.state == cookingState.CookingStates.DONE or state.state == cookingState.CookingStates.IDLE:
+    if state.paused or state.state in (cookingState.CookingStates.DONE, cookingState.CookingStates.IDLE, cookingState.CookingStates.ALERT):
         magnetron_led.off()
     else:
         magnetron_led.on()
@@ -196,12 +215,11 @@ def cooking_state_on_state_change(state):
         paused=state.paused
     )
         
-    microwave_screen.update(cooking_state, defrost_mode)
+    update_screen()
 
 def cooking_state_on_refresh(state):
     # Update OLED display
-    if microwave_screen:
-        microwave_screen.update(state, defrost_mode)
+    update_screen()
 
 def cooking_state_on_pause(state):
     # If the cooking is unpaused and was in STIRRING_REQUIRED or ALERT state, we set the state back to COOKING.
@@ -215,12 +233,19 @@ def cooking_state_on_pause(state):
         estimated_remaining_time=state.get_remaining_time()
     )
 
+# --- SCREEN UPDATE ---
+def update_screen():
+    global microwave_screen, cooking_state, defrost_mode, microwave_state
+    
+    if microwave_screen:
+        microwave_screen.update(cooking_state, defrost_mode, microwave_state)
+    
 
 # --- ASYNC TASKS ---
 
 async def uart_polling_task():
     """Polls UART for incoming messages from the WiFi board."""
-    global cooking_state, cooking_start_time, temperature_asked
+    global cooking_state, cooking_start_time, temperature_asked, microwave_state
     
     while True:
         if uart_device and uart_device.any():
@@ -248,6 +273,7 @@ async def uart_polling_task():
                     
                     await asyncio.sleep_ms(200) 
                     cooking_state_on_state_change(cooking_state)
+                    microwave_state = MicrowaveState.COOKING
                 elif command.command_type == UARTCommandType.TEMPERATURE_RESPONSE:
                     try:
                         # Check if payload is already a dict or needs JSON decoding
@@ -266,7 +292,7 @@ async def uart_polling_task():
 
 async def lora_process_task():
     """Consumes packets pushed to data_queue by the LoRa hardware thread."""
-    global cooking_state, defrost_mode, microwave_screen
+    global cooking_state, defrost_mode, microwave_screen, microwave_state
     
     while True:
         while not data_queue.empty():
@@ -274,32 +300,51 @@ async def lora_process_task():
             if paquet and not paquet.get("raw"):
                 data = paquet.get("data", {})
                 
+                # RECIPIENT FILTERING: Drop packets not addressed to this ESP32 or ALL
+                target = data.get("target_id") or data.get("recipient")
+                if target and target not in [DEVICE_ID, "ALL", "BROADCAST"]:
+                    log(f"[LoRa Process] Ignoring packet intended for {target}")
+                    continue
+
                 if "action" in data:
-                    if data["action"] == LoraCommands.TOGGLE_PAUSE:
+                    action = data["action"]
+                    if action == LoraCommands.TOGGLE_PAUSE:
                         if cooking_state is not None:
                             if cooking_state.state == cookingState.CookingStates.DONE:
-                                print("[LoRa Process] Cooking is done. Resetting microwave for the next session.")
+                                print("[LoRa Process] Cooking is done. Resetting microwave for next session.")
                                 cooking_state.set_state(cookingState.CookingStates.IDLE)
                                 await asyncio.sleep_ms(20)
                                 cooking_state = None
                             else:
                                 cooking_state.toggle_pause()
-                                if cooking_state.paused:
-                                    print("[LoRa Process] Cooking paused via orchestrator command.")
-                                else:
-                                    print("[LoRa Process] Cooking resumed via orchestrator command.")
+                                print(f"[LoRa Process] Cooking paused state toggled to {cooking_state.paused}")
                         else:
                             log("[LoRa Process] No active cooking state to toggle pause/resume.")
-                    elif data["action"] == LoraCommands.TOGGLE_DEFROST:
+
+                    elif action == LoraCommands.TOGGLE_DEFROST:
                         print("[LoRa Process] Toggling defrost mode via orchestrator command.")
-                        defrost_mode = data["defrost_state"]
-                        microwave_screen.update(cooking_state, defrost_mode)
-                    elif data["action"] == LoraCommands.NEW_ALERT:
-                        alert = Alert(data.get("alert_type"), data.get("message", "Unsafe area"))
+                        defrost_mode = data.get("defrost_state", False)
+                        update_screen()
+
+                    elif action == LoraCommands.NEW_ALERT:
+                        alert: Alert | None = None
+                        if data.get("alert_type") == AlertType.TEMPERATURE_ALERT:
+                            alert = Alert(data.get("alert_type"), data.get("alert_message", "Temp too high"), redistributed=True)
+                        elif data.get("alert_type") == AlertType.COOKING_SAFETY:
+                            alert = Alert(data.get("alert_type"), data.get("alert_message", "Unsafe area"), redistributed=True)
+                            
+                        if alert:
                             alert.timestamp = data.get("timestamp", time.time())
-                        print(f"[LoRa Process] New alert received via orchestrator: {alert.to_dict()}")
                             alert_manager.add_alert(alert)
 
+                    elif action == LoraCommands.MICROVAVE_STATE_UPDATE:
+                        new_state = data.get("new_microwave_state")
+                        if new_state:
+                            print(f"[LoRa Process] Microwave state update received: {new_state}")
+                            microwave_state = new_state
+                            if new_state not in (MicrowaveState.ALERT): # Not alert so we can show the error
+                                update_screen()
+                            
         await asyncio.sleep_ms(100)
 
 
@@ -334,7 +379,7 @@ async def memory_cleanup_task():
 
 # --- BOOTSTRAP ---
 async def main():
-    global cooking_state, defrost_mode, microwave_screen, alert_manager
+    global alert_manager
     print("[Main] Starting application...")
     
     init_hardware()
@@ -342,15 +387,8 @@ async def main():
     alert_manager = AlertManager()
     alert_manager.set_on_alert_callback(on_new_alert)
 
-    # Launch dedicated hardware thread for LoRa RX
-    try:
-        _thread.stack_size(16 * 1024)
-    except Exception:
-        pass
-    _thread.start_new_thread(lora_hardware_thread, ())
-    print("[Main] LoRa hardware background thread started.")
-
-    # Launch background async tasks
+    # Launch all tasks within the same single-threaded uasyncio event loop
+    asyncio.create_task(lora_rx_and_heartbeat_task())
     asyncio.create_task(uart_polling_task())
     asyncio.create_task(lora_process_task())
     asyncio.create_task(cooking_loop_task())
@@ -358,8 +396,7 @@ async def main():
 
     print("[Main] All async tasks running concurrently!")
     
-    microwave_screen.update(None, defrost_mode)
-
+    update_screen()
     # Keep main task alive indefinitely
     while True:
         await asyncio.sleep(3600)

orchestrateur/main.py

@@ -4,7 +4,7 @@ import time
 import asyncio
 import requests
 
-from orchestrateur.microwave_state import MicrowaveState
+from shared.microwave_state import MicrowaveState, MicrowaveStateFields
 from orchestrateur.sensors import gps
 from shared import get_lora, get_mqtt_client, deviceTypes, config, payloads, db
 from shared.logging import log
@@ -81,6 +81,15 @@ def notify_display_update():
         except RuntimeError:
             pass
 
+def on_microwave_change(state: MicrowaveState, field: MicrowaveStateFields):
+    if field != MicrowaveStateFields.STATE: # No external screen or lcd uses this field, so we can skip updates for it
+        notify_display_update()
+    
+    if field == MicrowaveStateFields.STATE and state.state in (MicrowaveState.DONE, MicrowaveState.ANALYZING, MicrowaveState.WAITING_FOR_CLOUD, MicrowaveState.ALERT):
+        # Send to LoRa device if state changed
+        lora.send_reliable(payloads.lora_microwave_state(state.state), max_retries=5)
+        
+
 def set_cloud_alert(state: bool):
     """Setter for cloud_alert that triggers a display update when changed."""
     global cloud_alert
@@ -91,7 +100,7 @@ def set_cloud_alert(state: bool):
         update_lcd_cloud_alert()
 
 # Global state trackers
-microwave_states = {"2": MicrowaveState("2", on_change_callback=notify_display_update)}
+microwave_states = {"2": MicrowaveState("2", on_change_callback=on_microwave_change)}
 button_state = False
 cloud_alert = None  # Global status flag for screen / UI display
 async_event_queue = None
@@ -257,13 +266,13 @@ async def display_broadcast_worker_task():
 def button_callback():
     """Button physical interrupt callback."""
     global button_state
-    if microwave_states.get("2").cooking_state == CookingStates.COOKING or microwave_states.get("2").cooking_state == CookingStates.DONE or microwave_states.get("2").cooking_state == CookingStates.STIRRING_REQUIRED:
+    if microwave_states.get("2").cooking_state in (CookingStates.COOKING, CookingStates.DONE, CookingStates.STIRRING_REQUIRED, CookingStates.ALERT):
         print("[Button] Toggling pause/resume for microwave '2'.")
-        lora.send_reliable({"id": DEVICE_ID, "microwave_id": "2", "action": LoraCommands.TOGGLE_PAUSE})
+        lora.send_reliable({"id": DEVICE_ID, "microwave_id": "2", "action": LoraCommands.TOGGLE_PAUSE}, max_retries=6)
     else:
         button_state = not button_state
         print(f"[Button] Defrost state toggled to: {button_state}")
-        lora.send_reliable({"id": DEVICE_ID, "microwave_id": "2", "action": LoraCommands.TOGGLE_DEFROST, "defrost_state": button_state})
+        lora.send_reliable({"id": DEVICE_ID, "microwave_id": "2", "action": LoraCommands.TOGGLE_DEFROST, "defrost_state": button_state}, max_retries=5)
 
 button.set_callback(button_callback)
 button.start_button_monitoring_thread()
@@ -271,7 +280,7 @@ button.start_button_monitoring_thread()
 # --- Alert manager ---
 alert_manager = None
 
-def on_new_alert(alert):
+def on_new_alert(alert: Alert):
     # Sends to cloud server
     alert_dict = alert.to_dict()
     alert_dict["orchestrator_id"] = DEVICE_ID
@@ -285,9 +294,11 @@ def on_new_alert(alert):
     res_json = response.json()
     print(f"[Alert Handling] Alert sent to cloud: {alert_dict}, Response: {res_json}")
     
+    if not alert.redistributed: # If not redistributed from microwaves
         # Send the alert to the lora device
-    lora.send_reliable(payloads.lora_new_alert(alert))
-    
+        payload = payloads.lora_new_alert(alert)
+        print(f"[Alert Handling] Sending alert to LoRa device: {payload}")
+        if lora.send_reliable(payload):
             microwave_states["2"].set_cooking_state(CookingStates.ALERT)
 
 # --- HARDWARE CONTROLLERS ---
@@ -311,6 +322,14 @@ def read_local_sensors(microwave_id, initial_dish_height):
         if temp is not None:
             sensor_data["temperature"] = temp
             sensor_data["humidity"] = hum
+            if config.DEBUG_TEMPERATURE_ALERT or temp > config.MAX_ALLOWED_TEMPERATURE_TECHNICAL_COMPARTMENT:
+                print(f"[{microwave_id}] ALERT: Unsafe temperature in technical compartment detected! Temp: {temp}°C, Humidity: {hum}%")
+                alert = Alert(
+                    AlertType.TEMPERATURE_ALERT,
+                    f"Unsafe temperature in technical compartment detected! Temp: {temp}/{config.MAX_ALLOWED_TEMPERATURE_COOKING_COMPARTMENT}°C, Humidity: {hum}%"
+                )
+                lora.send_reliable(payloads.lora_new_alert(alert), max_retries=5)
+                return None  # Abort further processing if unsafe temperature detected
     except Exception as e:
         log(f"[{microwave_id}] DHT read warning: {e}")
         
@@ -346,6 +365,11 @@ async def handle_new_dish(microwave_id, detected_height):
     # 4. Wait for local sensors to finish reading
     sensors_data = await sensor_task
     
+    if sensors_data is None:
+        print(f"[{microwave_id}] Aborting cooking plan because of empty sensor data")
+        microwave_states[microwave_id].set_state(MicrowaveState.ALERT)
+        return
+
     # Check if dish was removed while reading sensors
     if microwave_states.get(microwave_id).state != MicrowaveState.ANALYZING:
         print(f"[{microwave_id}] Dish removed during sensor read. Aborting.")
@@ -434,7 +458,7 @@ async def request_cloud_cooking_plan(microwave_id, sensors_data):
             
             if c_time is None or c_power is None or c_temp is None:
                 print(f"[{microwave_id}] Invalid plan received: {res_json}")
-                microwave_states[microwave_id].set_state(MicrowaveState.IDLE)
+                microwave_states[microwave_id].set_state(MicrowaveState.DONE)
                 return
 
             print(f"[{microwave_id}] Cloud Plan Received! Starting microwave: {c_time}s @ {c_power}W")
@@ -501,6 +525,9 @@ async def process_messages_task():
                     microwave_states[mw_id].set_state(MicrowaveState.DONE)
                     print(f"[{mw_id}] Cooking finished. Waiting for user to remove dish.")
             if "action" in data.get("data", {}):
+                if type(data["data"]) != dict:
+                    print(f"[LoRa] Invalid data format received: {data['data']}")
+                    continue
                 action = data["data"]["action"]
                 if action == LoraCommands.COOKING_UPDATE:
                     mw_id = data["data"].get("id")
@@ -509,6 +536,12 @@ async def process_messages_task():
                         microwave_states[mw_id].set_cooking_state(state_info.get("cooking_state", microwave_states[mw_id].cooking_state))
                         microwave_states[mw_id].set_cooking_estimated_remaining_time(state_info.get("estimated_remaining_time", microwave_states[mw_id].cooking_estimated_remaining_time))
                         microwave_states[mw_id].set_paused(state_info.get("paused", microwave_states[mw_id].paused))
+                elif action == LoraCommands.NEW_ALERT:
+                    alert_type = data["data"].get("alert_type")
+                    alert_message = data["data"].get("alert_message")
+                    alert = Alert(alert_type, alert_message, redistributed=True)
+                    alert_manager.add_alert(alert)
+                    print(f"[LoRa] New alert received: {alert.to_dict()}")
                 else:
                     print(f"[LoRa] Unhandled action received: {action} with data: {data['data']}")
         elif source == "MQTT":
@@ -530,7 +563,7 @@ async def process_messages_task():
                         # Pass change callback to newly connected microwave
                         microwave_states[component_id] = MicrowaveState(
                             component_id, 
-                            on_change_callback=notify_display_update
+                            on_change_callback=on_microwave_change
                         )
                         notify_display_update()         # Update the external screens
                         update_lcd_microwave_count()    # Update the LCD with new microwave count
@@ -641,7 +674,10 @@ async def monitor_dish_height_task():
 
     while True:
         dist = await get_filtered_dish_height()
-        current_state = microwave_states.get(mw_id, MicrowaveState.IDLE).state
+        try:
+            current_state = microwave_states.get(mw_id).state
+        except AttributeError:
+            current_state = MicrowaveState.IDLE
 
         if dist is not None:
             # Hysteresis Thresholds:

shared/__init__.py

@@ -7,6 +7,7 @@ import shared.payloads as payloads
 import shared.cookingState as cookingState
 import shared.safeQueue as safeQueue
 import shared.alerts as alerts
+import shared.microwave_state as microwave_state
 try:
     import shared.lora_device as lora_device
 except (ImportError, SyntaxError):

shared/alerts.py

@@ -20,10 +20,12 @@ class AlertManager:
         self.alerts.clear()
     
 class Alert:
-    def __init__(self, alertType: "AlertType", message: str):
+    def __init__(self, alertType: "AlertType", message: str, redistributed: bool = False, small_message: str = None):
         self.alertType = alertType
         self.message = message
+        self.small_message = small_message
         self.timestamp = time.time()
+        self.redistributed = redistributed
 
     def to_dict(self):
         return {
@@ -45,3 +47,4 @@ class Alert:
         
 class AlertType:
     COOKING_SAFETY = "COOKING_SAFETY"
+    TEMPERATURE_ALERT = "TEMPERATURE_ALERT"

shared/config.py

@@ -1,6 +1,7 @@
 # Debugging and others
 DEBUG=True
 DEBUG_DANGEROUS_AREA=False
+DEBUG_TEMPERATURE_ALERT=True
 
 # LoRa
 LORA_HEARTBEAT_INTERVAL = 30
@@ -19,8 +20,9 @@ MQTT_HELLO_INTERVAL = 30
 
 # Microwave Model
 COOKING_COMPARTMENT_HEIGHT = 30  # cm
-
 BUZZER_ACTIVATED = False
+MAX_ALLOWED_TEMPERATURE_TECHNICAL_COMPARTMENT = 70
+MAX_ALLOWED_TEMPERATURE_COOKING_COMPARTMENT = 200
 
 # TELEMETRY
 TELEMETRY_SEND_INTERVAL = 3

shared/lora_device.py

@@ -28,6 +28,12 @@ class BaseLoraDevice:
         self.pending_rx_queue = []
         self.default_group = 2
         
+        # NEW: Global TX lock to prevent concurrent overlapping transmissions
+        if IS_MICROPYTHON:
+            self.tx_lock = _thread.allocate_lock()
+        else:
+            self.tx_lock = threading.Lock()
+
     def _generate_msg_id(self):
         return random.getrandbits(16)
 
@@ -77,6 +83,8 @@ class BaseLoraDevice:
 
     def send_reliable(self, payload, max_retries=4, ack_timeout=3.0):
         """Sends a payload and listens in a single continuous RX window for the ACK."""
+        
+        with self.tx_lock:
             lock = getattr(self, 'lock', None)
             
             if isinstance(payload, dict):
@@ -93,12 +101,9 @@ class BaseLoraDevice:
                 log(f"[ReliableLoRa] Attempt {attempt + 1}/{max_retries} transmitting msg_id {msg_id}")
                 self.send(payload)
 
-            # 1. Open a single continuous RX window for the full timeout duration
-            # (Defaulted to 3.0s to account for LA66 UART + transmission time)
                 timeout_ms = int(ack_timeout * 1000)
                 packet = self.receive_packet(timeout_ms=timeout_ms)
 
-            # 2. Process incoming packet if received
                 if packet:
                     if lock: lock.acquire()
                     try:
@@ -108,7 +113,6 @@ class BaseLoraDevice:
                     finally:
                         if lock: lock.release()
 
-            # 3. Check if matching ACK was received
                 if lock: lock.acquire()
                 try:
                     if msg_id in self.received_acks:
@@ -296,19 +300,28 @@ else:
             self.ser.reset_output_buffer()
             self.lock = threading.Lock()
             
-            # Initial configuration
+            self._emergency_rx_buffer = [] 
+            
             self.configure(freq=868.1, sf=7, bw=125)
 
         def _send_at_cmd(self, cmd, timeout=1.5):
-            """Sends AT command and reads response until line received or timeout."""
+            """Sends AT command and safely handles async incoming packets."""
             self.ser.write(f"{cmd}\r\n".encode('utf-8'))
             
             start = time.time()
             resp = ""
             while (time.time() - start) < timeout:
                 if self.ser.in_waiting > 0:
-                    line = self.ser.readline().decode('utf-8', errors='ignore')
-                    resp += line
+                    line = self.ser.readline().decode('utf-8', errors='ignore').strip()
+                    
+                    if not line:
+                        continue
+
+                    if any(marker in line for marker in ["+RECV:", "+RCV=", "+DRX:", "(HEX:)", "Data:"]):
+                        self._emergency_rx_buffer.append(line)
+                        continue
+
+                    resp += line + "\n"
                     if "OK" in line or "ERROR" in line or "AT_BUSY" in line:
                         break
                 time.sleep(0.02)
@@ -364,8 +377,14 @@ else:
                 timeout_s = timeout_ms / 1000.0
                 
                 while (time.time() - start_time) < timeout_s:
-                    if self.ser.in_waiting > 0:
+                    line = ""
+                    
+                    # NEW: Process emergency buffer first before checking serial
+                    if self._emergency_rx_buffer:
+                        line = self._emergency_rx_buffer.pop(0)
+                    elif self.ser.in_waiting > 0:
                         line = self.ser.readline().decode('utf-8', errors='ignore').strip()
+                        
                     if line:
                         payload_bytes = None
                         
@@ -438,6 +457,7 @@ def get_lora_device(port_or_pins=None):
 
 class LoraCommands:
     PING = "ping"
+    MICROVAVE_STATE_UPDATE = "microwave_state_update"
     COOKING_STATE_UPDATE = "cooking_state_update"
     COOKING_UPDATE = "cooking_update"
     TOGGLE_PAUSE = "toggle_pause"

shared/microwave_state.py

@@ -1,6 +1,13 @@
 from shared.cookingState import CookingStates
 import shared.config as config
 
+class MicrowaveStateFields:
+    STATE = "state"
+    PAUSED = "paused"
+    COOKING_STATE = "cooking_state"
+    COOKING_ESTIMATED_REMAINING_TIME = "cooking_estimated_remaining_time"
+    COOKING_START_TIME = "cooking_start_time"
+
 class MicrowaveState:
     state = None
     paused = False
@@ -14,11 +21,11 @@ class MicrowaveState:
         self.cooking_state = CookingStates.IDLE
         self.on_change_callback = on_change_callback
 
-    def _notify_change(self):
+    def _notify_change(self, field: MicrowaveStateFields = None):
         """Invokes callback if registered on state attribute changes."""
         if self.on_change_callback:
             try:
-                self.on_change_callback()
+                self.on_change_callback(self, field)
             except Exception as e:
                 print(f"[MicrowaveState] Error in change callback: {e}")
         
@@ -29,21 +36,21 @@ class MicrowaveState:
                 MicrowaveState.ANALYZING,
                 MicrowaveState.WAITING_FOR_CLOUD, 
                 MicrowaveState.COOKING, 
-                MicrowaveState.DONE
+                MicrowaveState.DONE,
+                MicrowaveState.ALERT,
             ), f"Invalid state: {new_state}"
             
         if self.state != new_state:
             self.state = new_state
-            # self._notify_change()
+            self._notify_change(MicrowaveStateFields.STATE)
         
     def set_paused(self, is_paused):
         if self.paused != is_paused:
             self.paused = is_paused
-            self._notify_change()
+            self._notify_change(MicrowaveStateFields.PAUSED)
         
     def toggle_pause(self):
-        self.paused = not self.paused
-        self._notify_change()
+        self.set_paused(not self.paused)
         
     def set_cooking_state(self, new_cooking_state):
         if config.DEBUG:
@@ -56,18 +63,20 @@ class MicrowaveState:
             ), "Invalid cooking state: " + str(new_cooking_state)
             
         if self.cooking_state != new_cooking_state:
+            if self.cooking_state == CookingStates.COOKING and new_cooking_state == CookingStates.DONE:
+                self.set_state(MicrowaveState.DONE)
             self.cooking_state = new_cooking_state
-            self._notify_change()
+            self._notify_change(MicrowaveStateFields.COOKING_STATE)
         
     def set_cooking_estimated_remaining_time(self, time_seconds):
         if self.cooking_estimated_remaining_time != time_seconds:
             self.cooking_estimated_remaining_time = time_seconds
-            self._notify_change()
+            self._notify_change(MicrowaveStateFields.COOKING_ESTIMATED_REMAINING_TIME)
         
     def set_cooking_start_time(self, start_time):
         if self.cooking_start_time != start_time:
             self.cooking_start_time = start_time
-            self._notify_change()
+            self._notify_change(MicrowaveStateFields.COOKING_START_TIME)
         
     def to_dict(self):
         return {
@@ -83,3 +92,4 @@ class MicrowaveState:
     WAITING_FOR_CLOUD = "WAITING_FOR_CLOUD"     # Waiting for API parameters
     COOKING = "COOKING"                         # Microwave is active
     DONE = "DONE"                               # Finished/Stopped, waiting for dish removal
+    ALERT = "ALERT"                             # Alert state, waiting for user action

shared/payloads.py

@@ -69,13 +69,29 @@ def telemetry_payload(device_id, microwave_states, button_state, cloud_alert, gp
         "logs": logs
     })
     
-def lora_new_alert(alert: Alert):
+def lora_new_alert(alert: Alert, with_message=False):
+    try:
+        from shared.lora_device import LoraCommands
+    except ImportError:
+        pass  # No need
+    
+    payload = {
+        "action": LoraCommands.NEW_ALERT,
+        "alert_type": alert.alertType
+    }
+    
+    if with_message:
+        payload["alert_message"] = alert.message
+    
+    return payload
+    
+def lora_microwave_state(state: str):
     try:
         from shared.lora_device import LoraCommands
     except ImportError:
         pass  # No need
     
     return {
-        "action": LoraCommands.NEW_ALERT,
-        "alert_type": alert.alertType
+        "action": LoraCommands.MICROVAVE_STATE_UPDATE,
+        "new_microwave_state": state
     }