Wait, is this peak ?

micro_ondes/esp_lora/main.py

@@ -1,9 +1,13 @@
 import _thread
-from machine import Pin
+from machine import Pin, SoftI2C
+from shared.safeQueue import SafeQueue
 from shared import get_lora, get_uart, deviceTypes, config, cookingState
 from shared.uart_comm import UARTCommand, UARTCommandType
 from shared.sensors import RGBLED
 from shared.logging import log
+from shared.lora_device import LoraCommands
+import framebuf
+import ssd1306
 import time
 
 # --- Configuration Matérielle ---
@@ -21,44 +25,56 @@ except Exception:
 # --- Initialisation LoRa ---
 lora = get_lora()
 lora.configure(freq=868.1, sf=7)
+data_queue = SafeQueue()
 
 # --- Création des lEDs RGB ---
 magnetron_led = RGBLED(red_pin=48, green_pin=47, blue_pin=33)
 magnetron_led.color = RGBLED.WHITE_YELLOW
 magnetron_led.off()
 
+# --- Création de l'écran OLED ---
+scl_pin = Pin(18, Pin.OUT, pull=Pin.PULL_UP)
+sda_pin = Pin(17, Pin.OUT, pull=Pin.PULL_UP)
+display_i2c = SoftI2C(scl=scl_pin, sda=sda_pin, freq=100000)
+display = ssd1306.SSD1306_I2C(128, 64, display_i2c, addr=0x3C)
+display.text("Booting...", 1, 2, 1)
+display.show()
+
 print(f"ESP32 initialisé avec l'ID : '{DEVICE_ID}' (Type : {deviceTypes.DEVICE_TYPES['MICROWAVE']})")
 
-def heartbeat_loop():
+PING_PAYLOAD = {
-    while True:
-        print(f"\nESP32 : Envoi du Heartbeat...")
-        # Envoi périodique
-        ping_payload = {
     "id": DEVICE_ID,
     "type": deviceTypes.DEVICE_TYPES["MICROWAVE"]
 }
-        lora.send(ping_payload)
 
-        # Le receive_packet est maintenant protégé par le lock dans lora_device
+def heartbeat_loop():
-        # Si le main thread utilise la radio, ce thread attendra son tour
+    last_heartbeat_time = 0
-        paquet = lora.receive_packet(timeout_ms=2000)
+    while True:
+        now = time.time()
         
-        if paquet and not paquet["raw"]:
+        # 1. Send periodic heartbeat
-            donnees = paquet["data"]
+        if now - last_heartbeat_time >= config.LORA_HEARTBEAT_INTERVAL:
-            # Vérification si le paquet reçu est bien la réponse attendue de l'orchestrateur
+            last_heartbeat_time = now
-            if donnees.get("type") == deviceTypes.DEVICE_TYPES["ORCHESTRATOR"]:
+            print("\nESP32 : Envoi du Heartbeat...")
-                print(f"ESP32 : Réponse reçue de l'orchestrateur '{donnees.get('id')}' ! [Statut: ALIVE]")
+            lora.send(PING_PAYLOAD)
-            else:
-                print(f"ESP32 : Paquet reçu d'un type inattendu : {donnees.get('type')}")
-        else:
-            print("ESP32 : Pas de réponse de l'orchestrateur (Le RPI est-il éteint ?)")
         
-        time.sleep(config.HEARTBEAT_INTERVAL)
+        # 2. Increase listen window to 300ms so radio stays active in RX mode
+        paquet = lora.receive_reliable(timeout_ms=300)
+        
+        if paquet is not None:
+            log(f"[LoRa Thread] New Packet Received: {paquet}")
+            data_queue.put(paquet)
+            
+        time.sleep_ms(10)
         
 # UART
 uart_device = get_uart(uart_id=1, tx_pin=46, rx_pin=45)
 
 # Lancer la boucle de heartbeat dans un thread séparé
+try:
+    _thread.stack_size(16 * 1024)
+except Exception:
+    pass
 _thread.start_new_thread(heartbeat_loop, ())
 
 # Cooking parameters
@@ -71,8 +87,13 @@ def cooking_state_on_state_change(state):
     
     # Send to the Wifi board the current state
     uart_device.send_as_command(UARTCommand(UARTCommandType.COOKING_STATE_UPDATE, {"state": state.state}))
+    # Send to the orchestrator the current state
+    lora.send_reliable({"id": DEVICE_ID, "new_cooking_state": state.state})
     
-    if state.paused or state.state == cookingState.CookingStates.DONE:
+    display.text(cookingState.CookingStates.get_state_name(state.state), 1, 2, 1)
+    display.show()
+    
+    if state.paused or state.state == cookingState.CookingStates.DONE or state.state == cookingState.CookingStates.IDLE:
         magnetron_led.off()
     else:
         magnetron_led.on()
@@ -83,8 +104,7 @@ def cooking_state_on_state_change(state):
     if state.state == cookingState.CookingStates.STIRRING_REQUIRED:
         pass
     if state.state == cookingState.CookingStates.DONE:
-        global cooking_state
+        pass
-        cooking_state = None
     if state.state == cookingState.CookingStates.ALERT:
         pass
 
@@ -92,6 +112,13 @@ def cooking_state_on_refresh(state):
     # TODO Show screen information
     pass
 
+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.
+    if not state.paused and (state.state == cookingState.CookingStates.STIRRING_REQUIRED or state.state == cookingState.CookingStates.ALERT):
+        state.set_state(cookingState.CookingStates.COOKING)
+        
+    # TODO send_reliable lora message to orchestrator about pause/resume state
+    
 
 # --- MAIN APPLICATION THREAD ---
 print("[Main] Main execution path active.")
@@ -113,17 +140,40 @@ while True:
                 cooking_state.set_temperature_provider(cooking_state_temperature_provider)
                 cooking_state.set_state_change_callback(cooking_state_on_state_change)
                 cooking_state.set_refresh_callback(cooking_state_on_refresh)
+                cooking_state.set_pause_callback(cooking_state_on_pause)
                 time.sleep_ms(20) # Before sending back right away
                 cooking_state_on_state_change(cooking_state)
 
             else:
                 print(f"[Main] Unknown command type received: {command.command_type}")
+    # 2. Listen for incoming LoRa packets from the orchestrator
+    while not data_queue.empty():
+        paquet = data_queue.get()
+        if paquet and not paquet["raw"]:
+            data = paquet["data"]
+            # Commands
+            if "action" in data:
+                if data["action"] == LoraCommands.TOGGLE_PAUSE:
+                    if cooking_state != None:
+                        if (cooking_state.state == cookingState.CookingStates.DONE):
+                            print("[Main] Cooking is done. We reset the microwave for the next cooking session.")
+                            cooking_state.set_state(cookingState.CookingStates.IDLE)
+                            time.sleep_ms(20) # Before sending back right away
+                            cooking_state = None
+                        else:
+                            cooking_state.toggle_pause()
+                            if cooking_state.paused:
+                                print("[Main] Cooking paused via orchestrator command.")
+                            else:
+                                print("[Main] Cooking resumed via orchestrator command.")
+                    else:
+                        log("[Main] No active cooking state to toggle pause/resume.")
 
     # uart_device.send(f"Hello from esp-32 lora ID {DEVICE_ID}") 
 
     # Cooking State Update
-    if cooking_state:
+    if cooking_state != None:
         cooking_state.update_tick()
         print(f"[Main] Cooking state : State : {cooking_state.state}, Temperature: {cooking_state.current_dish_temp}, Paused: {cooking_state.paused}, Remaining Time: {cooking_state.get_remaining_time():.2f}s, Estimated Remaining Time: {cooking_state.get_remaining_time_estimation():.2f}s")
 
-    time.sleep_ms(200)
+    time.sleep_ms(500)

micro_ondes/esp_lora/tests/main_lora.py

@@ -14,10 +14,10 @@ while True:
     mesures = {"id": "ESP32_Salon", "temp": 22.4, "hum": 55.2}
     
     # Envoi direct (le pilote s'occupe de mettre le groupe \x02)
-    lora.send(b'\x02' + lora.send_json_bytes_helper if False else bytes([2]) + lora.send_helper if False else b'\x02' + __import__('ujson').dumps(mesures).encode('utf-8'))
+    lora.send_reliable(b'\x02' + lora.send_json_bytes_helper if False else bytes([2]) + lora.send_helper if False else b'\x02' + __import__('ujson').dumps(mesures).encode('utf-8'))
     
     # Réception propre
-    paquet = lora.receive_packet(3000)
+    paquet = lora.receive_reliable(3000)
     if paquet:
         # paquet est un dict : {"group": 2, "data": {...}, "raw": False}
         print(f"ESP32 : Message reçu du groupe {paquet['group']}")

micro_ondes/esp_wifi/boot.py

@@ -5,16 +5,50 @@ esp.osdebug(True)
 #import webrepl
 #webrepl.start()
 
-def do_connect(ssid, pwd):
+# def do_connect(ssid, pwd):
+#     import network
+#     sta_if = network.WLAN(network.STA_IF)
+#     sta_if.config(pm=sta_if.PM_NONE)
+#     if not sta_if.isconnected():
+#         print('connecting to network...')
+#         sta_if.active(True)
+#         sta_if.connect(ssid, pwd)
+#         while not sta_if.isconnected():
+#             pass
+#     print('network config:', sta_if.ifconfig())
+
 import network
-    sta_if = network.WLAN(network.STA_IF)
+import time
-    if not sta_if.isconnected():
+
-        print('connecting to network...')
+def do_connect(ssid, password):
-        sta_if.active(True)
+    wlan = network.WLAN(network.STA_IF)
-        sta_if.connect(ssid, pwd)
+    
-        while not sta_if.isconnected():
+    # 1. ALWAYS activate the interface FIRST
-            pass
+    if not wlan.active():
-    print('network config:', sta_if.ifconfig())
+        wlan.active(True)
+    
+    # 2. Configure Wi-Fi options AFTER activation
+    try:
+        # Disable Wi-Fi modem sleep (0 = PM_NONE)
+        wlan.config(pm=0)
+    except Exception as e:
+        print("[Wi-Fi] Warning: Failed to set power management:", e)
+    
+    # 3. Connect to the access point
+    if not wlan.isconnected():
+        print(f"[Wi-Fi] Connecting to {ssid}...")
+        wlan.connect(ssid, password)
+        
+        timeout = 15
+        start_time = time.time()
+        while not wlan.isconnected():
+            if time.time() - start_time > timeout:
+                print("[Wi-Fi] Connection timed out!")
+                return False
+            time.sleep(0.5)
+            
+    print("[Wi-Fi] Connected! Network config:", wlan.ifconfig())
+    return True
 
 # Attempt to connect to WiFi network
 do_connect("Smartwave-1", 'Smartwave-prot-1')

micro_ondes/esp_wifi/main.py

@@ -1,23 +1,12 @@
-import _thread
+import gc
-import select
+import sys
-from machine import Pin, I2C
-from sensors import temperature_sensor
-from shared import get_mqtt_client, get_uart, config, payloads, cookingState
-from shared.uart_comm import UARTCommand, UARTCommandType
-from shared.sensors import RGBLED
-from shared.logging import log
 import time
 import ujson as json
-import sys
+import uasyncio as asyncio
+from machine import Pin, I2C
 
-# Simple thread-safe queue list
+# 1. Clean memory immediately before performing any operations
-msg_queue = []
+gc.collect()
-queue_lock = _thread.allocate_lock()
-
-def queue_publish(topic, payload):
-    """Safely queues a message from the main thread."""
-    with queue_lock:
-        msg_queue.append((topic, payload))
 
 # --- READ DEVICE ID ---
 try:
@@ -26,214 +15,340 @@ try:
 except Exception:
     DEVICE_ID = "ESP32_Inconnu"
 
-# --- Cooking State ---
+# --- GLOBAL APP STATE ---
-cooking_state = None  # This will hold the current cooking state if any
+orchestrator_id = None
+cooking_state = None
+mqtt_connected = False
+should_unsubscribe_hello = False
+
+# --- ASYNC SIGNALS & QUEUES ---
+# Event to signal when orchestrator requests sensor data (prevents MQTT lock deadlock)
+sensor_request_event = None
 
 # --- MQTT SETUP ---
+from shared import get_mqtt_client, config, payloads
+
 MQTT_CA_FILE = "/certs/ca.crt"
 
 mqtt_client = get_mqtt_client(
-    host=config.MQTT_BROKER_HOST,
+    host="192.168.50.1",
-    client_id="smartwave-esp32-" + DEVICE_ID,
+    client_id="smartwave-esp32-demo",
-    use_tls=config.USE_TLS,
+    use_tls=True,
     cafile=MQTT_CA_FILE,
-    keepalive=config.MQTT_KEEPALIVE,
+    keepalive=30,
 )
 
-global orchestrator_id
+# --- HARDWARE & MODULE DEFERRED IMPORTS ---
-orchestrator_id = None
+status_led = None
-def on_mqtt_message(message):
+uart_device = None
-    print("[MQTT Thread] Received message:", message)
+mlx_temperature_sensor = None
+cookingState = None
+log = None
+UARTCommand = None
+UARTCommandType = None
+
+
+def init_hardware():
+    """Initializes hardware peripherals AFTER MQTT TLS has reserved its RAM."""
+    global status_led, uart_device, mlx_temperature_sensor
+    global cookingState, log, UARTCommand, UARTCommandType
+
+    print("[Main] Initializing hardware peripherals...")
+
+    from shared import get_uart, cookingState as cs, logging
+    from shared.uart_comm import UARTCommand as UC, UARTCommandType as UCT
+    from shared.sensors import RGBLED
+    from sensors import temperature_sensor
+
+    cookingState = cs
+    log = logging.log
+    UARTCommand = UC
+    UARTCommandType = UCT
+
+    status_led = RGBLED(red_pin=21, green_pin=19, blue_pin=18)
+    uart_device = get_uart(uart_id=2, tx_pin=17, rx_pin=16)
+
+    temperature_sensor_i2c = I2C(
+        0,
+        scl=Pin(25, Pin.IN, Pin.PULL_UP),
+        sda=Pin(26, Pin.IN, Pin.PULL_UP),
+        freq=100000,
+    )
+    devices = temperature_sensor_i2c.scan()
+    if 0x5A in devices:
+        print("[Main] MLX90614 found at address 0x5A!")
+    else:
+        print("[Main] MLX90614 not found on I2C bus.")
+    mlx_temperature_sensor = temperature_sensor.MLX90614(temperature_sensor_i2c)
+
+
+def on_received_cooking_state_update(state, is_error=False, is_terminated=False):
+    """Callback executed when state changes are received from the LoRa board over UART."""
+    if cooking_state:
+        if is_error:
+            cooking_state.set_state(cookingState.CookingStates.ERROR)
+        elif is_terminated:
+            cooking_state.set_state(cookingState.CookingStates.ABORTED)
+        else:
+            cooking_state.set_state(state)
+
+
+def on_cooking_state_change(state):
+    """Callback executed whenever local cooking state transitions."""
+    BLINK_INTERVAL_MS = 500
+    
+    if status_led and cookingState:
+        if state == cookingState.CookingStates.IDLE:
+            status_led.color = status_led.OFF
+            status_led.blink_off()
+        elif state == cookingState.CookingStates.COOKING:
+            status_led.color = status_led.YELLOW
+            status_led.blink_off()
+        elif state == cookingState.CookingStates.STIRRING_REQUIRED:
+            status_led.color = status_led.ORANGE
+            status_led.blink_on(BLINK_INTERVAL_MS)
+        elif state == cookingState.CookingStates.ALERT:
+            status_led.color = status_led.RED
+            status_led.blink_on(BLINK_INTERVAL_MS)
+        elif state == cookingState.CookingStates.DONE:
+            status_led.color = status_led.GREEN
+            status_led.blink_off()
+
+
+def on_mqtt_message(message):
+    """Sync callback: Lightweight! Only updates variables or triggers async signals."""
+    global orchestrator_id, cooking_state, should_unsubscribe_hello
+    print("[MQTT] Received message on topic:", message.get("topic"))
 
-    # Try and parse the payload as json, but if it fails, just print the raw payload
     payload_data = None
     try:
-        payload_data = json.loads(message['payload'])
+        payload_data = json.loads(message["payload"])
     except Exception as e:
-        print("[MQTT Thread] Error parsing JSON:", e)
+        print("[MQTT] Payload parsing warning:", e)
-        sys.print_exception(e)
-        pass # Maybe it's not JSON
 
-    if message['topic'] == config.MQTT_TOPIC_HELLO and payload_data and "id_orchestrator" in payload_data and payload_data["id_microwave"] == DEVICE_ID:
+    topic = message.get("topic")
-        print("[MQTT Thread] Hello response received from orchestrator:", payload_data["id_orchestrator"])
-        global orchestrator_id
-        orchestrator_id = payload_data["id_orchestrator"]
-        # Unsubscribe from the hello topic since we got a response
-        mqtt_client.unsubscribe(config.MQTT_TOPIC_HELLO)
-        print("[MQTT Thread] Unsubscribed from topic:", config.MQTT_TOPIC_HELLO)
 
-    # Handle cooking messages
+    # 1. Orchestrator Hello Response
-    elif message['topic'] == config.MQTT_TOPIC_COOKING and payload_data and payload_data["id_microwave"] == DEVICE_ID:
+    if (
-        # Cooking sensors init request
+        topic == config.MQTT_TOPIC_HELLO
-        if not "cook_time" in payload_data:
+        and payload_data
-            print("[MQTT Thread] Cooking sensors init received from the orchestrator")
+        and payload_data.get("id_microwave") == DEVICE_ID
-            obj_temp = mlx_temperature_sensor.read_object_temp()
+    ):
-            amb_temp = mlx_temperature_sensor.read_ambient_temp()
+        orchestrator_id = payload_data.get("id_orchestrator")
-            queue_publish(config.MQTT_TOPIC_SENSOR, payloads.mqtt_sensor_data(DEVICE_ID, obj_temp, amb_temp))
+        print("[MQTT] Hello response received from orchestrator:", orchestrator_id)
-        # Received cooking parameters from the orchestrator
+        should_unsubscribe_hello = True
+
+    # 2. Cooking Parameters / Sensor Request
+    elif (
+        topic == config.MQTT_TOPIC_COOKING
+        and payload_data
+        and payload_data.get("id_microwave") == DEVICE_ID
+    ):
+        if "cook_time" not in payload_data:
+            print("[MQTT] Sensor data requested! Triggering async publisher...")
+            # Trigger async event instead of calling publish() directly inside lock context!
+            sensor_request_event.set()
         else:
-            print("[MQTT Thread] Cooking parameters received from the orchestrator:", payload_data)
+            print("[MQTT] Cooking parameters received:", payload_data)
-            global cooking_state
+            if cookingState:
                 cooking_state = cookingState.CookingState(
                     cook_time=payload_data["cook_time"],
                     power_level=payload_data["power_level"],
-                target_temp=payload_data["target_temp"]
+                    target_temp=payload_data["target_temp"],
                 )
                 cooking_state.set_state_change_callback(on_cooking_state_change)
-            cooking_state.set_state(cookingState.CookingStates.IDLE) # Set initial state to IDLE
+                cooking_state.set_state(cookingState.CookingStates.IDLE)
-            # Send to the LoRa board the cooking parameters
-            uart_device.send_as_command(UARTCommand(UARTCommandType.COOKING_PARAMS, payload_data))
-            print("[MQTT Thread] Cooking parameters sent to LoRa board.")
 
-    print("[MQTT Thread] Message processing complete.")
+            if uart_device and UARTCommand:
+                uart_device.send_as_command(
+                    UARTCommand(UARTCommandType.COOKING_PARAMS, payload_data)
+                )
+                print("[MQTT] Cooking parameters sent to LoRa board over UART.")
 
+
+# --- DEDICATED ASYNC TASK FOR SENSOR PUBLISHING ---
+async def sensor_publisher_task():
+    """Waits for sensor_request_event, reads hardware, and publishes outside the MQTT lock."""
+    while True:
+        await sensor_request_event.wait()
+        sensor_request_event.clear()
+
+        print("[Sensor Task] Reading temperature sensors...")
+        obj_temp = (
+            mlx_temperature_sensor.read_object_temp()
+            if mlx_temperature_sensor
+            else 0
+        )
+        amb_temp = (
+            mlx_temperature_sensor.read_ambient_temp()
+            if mlx_temperature_sensor
+            else 0
+        )
+
+        sensor_payload = payloads.mqtt_sensor_data(DEVICE_ID, obj_temp, amb_temp)
+
+        try:
+            print("[Sensor Task] Publishing sensor data to MQTT...")
+            mqtt_client.publish(
+                config.MQTT_TOPIC_SENSOR, sensor_payload, qos=config.MQTT_QOS
+            )
+            print("[Sensor Task] Sensor data successfully published:", sensor_payload)
+        except Exception as e:
+            print("[Sensor Task] Failed to publish sensor data:", e)
+
+
+async def uart_task():
+    """Polls incoming UART messages from the LoRa board using dynamic method fallback."""
+    while True:
+        if uart_device:
+            try:
+                cmd = uart_device.read_as_command()
+
+                if cmd:
+                    print("[UART] Command received from LoRa board:", cmd)
+                    if (
+                        hasattr(cmd, "command_type")
+                        and cmd.command_type == UARTCommandType.STATE_UPDATE
+                        and on_received_cooking_state_update
+                    ):
+                        on_received_cooking_state_update(
+                            cmd.payload.get("state"),
+                            cmd.payload.get("is_error", False),
+                            cmd.payload.get("is_terminated", False),
+                        )
+            except Exception as e:
+                print("[UART Task] Error reading command:", e)
+
+        await asyncio.sleep_ms(50)
+
+
+async def connect_mqtt_async():
+    global mqtt_connected, mqtt_client
+    mqtt_connected = False
+
+    while True:
+        try:
+            print("[MQTT] Connecting to broker with TLS...")
+            # Re-instantiate client to clear old socket buffers
+            gc.collect()
+            mqtt_client = get_mqtt_client(
+                host="192.168.50.1", # TODO : Use config.MQTT_BROKER_HOST instead of hardcoding
+                port=8884,
+                client_id="smartwave-esp32-demo",
+                use_tls=True,
+                cafile=MQTT_CA_FILE,
+                keepalive=30,
+            )
             mqtt_client.set_callback(on_mqtt_message)
             
-
-def mqtt_background_thread():
-    """Background MQTT worker handling ALL socket operations safely."""
-    print("[Thread] Background MQTT worker started.")
-    
-    while True:
-        try:
-            print("[Thread] Attempting connection to MQTT broker...")
             mqtt_client.connect()
-            print("[Thread] Connected! Subscribing to topic...")
+            print("[MQTT] Connected! Subscribing to topics...")
             mqtt_client.subscribe(config.MQTT_TOPIC_COOKING, qos=config.MQTT_QOS)
-            print("[Thread] Successfully subscribed. Setting up poller...")
+            mqtt_client.subscribe(config.MQTT_TOPIC_HELLO, qos=config.MQTT_QOS)
-            
+            print("[MQTT] Subscribed successfully!")
-            poller = select.poll()
+            mqtt_connected = True
-            poller.register(mqtt_client._client.sock, select.POLLIN)
+            return
-            
-            last_check = time.time()
-            
-            while True:
-                # 1. Process outbound messages queued by the main thread
-                while len(msg_queue) > 0:
-                    with queue_lock:
-                        topic, payload = msg_queue.pop(0)
-                    print(f"[Thread] Safely publishing queued message to {topic}...")
-                    mqtt_client.publish(topic, payload, qos=config.MQTT_QOS)
-                
-                # 2. Check for incoming messages (non-blocking poll)
-                events = poller.poll(200) 
-                if events:
-                    mqtt_client.wait()
-                
-                # 3. Handle Keepalive tracking manually
-                if time.time() - last_check >= 15:
-                    # print("[Thread] Sending keepalive ping...")
-                    mqtt_client._client.ping()
-                    last_check = time.time()
-                    
-                # Small breathe room for the CPU core
-                time.sleep_ms(50)
-                        
         except Exception as e:
-            print("[Thread] Connection dropped or error encountered:", e)
+            print("[MQTT] Connection failed:", e)
             sys.print_exception(e)
-            print("[Thread] Cleaning up socket context. Retrying in 5 seconds...")
-            
-            # --- FIX FOR ERROR 23 (SOCKET LEAK) ---
-            # Manually force-kill the underlying socket file descriptor if it exists
-            try:
-                if mqtt_client._client and hasattr(mqtt_client._client, "sock"):
-                    if mqtt_client._client.sock is not None:
-                        mqtt_client._client.sock.close()
-            except Exception:
-                pass # Already dead or closed
-
-            # Now we let the wrapper do its normal cleanup safely
             try:
                 mqtt_client.close()
             except Exception:
                 pass
-            time.sleep(5)
             
-# UART
+            # Force heap cleanup before sleeping
-uart_device = get_uart(uart_id=2, tx_pin=17, rx_pin=16)
+            del mqtt_client
+            gc.collect()
+            print(f"[MQTT] Free RAM after cleanup: {gc.mem_free()} bytes")
+            print("[MQTT] Retrying connection in 5 seconds...")
+            await asyncio.sleep(5)
 
-# Cooking Cycle
+async def mqtt_poll_task():
-cooking_state = None
+    global mqtt_connected
-def on_received_cooking_state_update(new_state):
+    last_ping = time.time()
-    global cooking_state
-    if cooking_state is None:
-        print("[Main] No active cooking state to update.")
-        return
-    
-    log(f"[Main] Updating cooking state to: {new_state}")
-    cooking_state.set_state(new_state)
-    
-# Status LED
-status_led = RGBLED(red_pin=21, green_pin=19, blue_pin=18)
-def on_cooking_state_change(state):
-    print(f"[Main] Cooking state changed to: {state.state}")
-    
-    # === STATUS LED UPDATE ===
-    BLINK_INTERVAL_MS = 500  # Blink every 500ms
-    
-    if state.state == cookingState.CookingStates.IDLE:
-        status_led.color = RGBLED.OFF
-        status_led.blink_off()
-    if state.state == cookingState.CookingStates.COOKING:
-        status_led.color = RGBLED.YELLOW
-        status_led.blink_off()
-    if state.state == cookingState.CookingStates.STIRRING_REQUIRED:
-        status_led.color = RGBLED.ORANGE
-        status_led.blink_on(BLINK_INTERVAL_MS)
-    if state.state == cookingState.CookingStates.DONE:
-        status_led.color = RGBLED.GREEN
-        status_led.blink_off()
-    if state.state == cookingState.CookingStates.ALERT:
-        status_led.color = RGBLED.RED
-        status_led.blink_on(BLINK_INTERVAL_MS)
-    
-
-# --- MAIN APPLICATION THREAD (Core 0) ---
-print("[Main] Main execution path active.")
-
-# Temperature sensor setup
-temperature_sensor_i2c = I2C(0, scl=Pin(25, Pin.IN, Pin.PULL_UP), sda=Pin(26, Pin.IN, Pin.PULL_UP), freq=100000)
-# Scan to verify the sensor is connected and detected
-print("Scanning I2C bus...")
-devices = temperature_sensor_i2c.scan()
-if 0x5A in devices:
-    print("MLX90614 found at address 0x5A!")
-else:
-    print("MLX90614 not found. Please check your wiring.")
-mlx_temperature_sensor = temperature_sensor.MLX90614(temperature_sensor_i2c)
-
-# --- Launch background worker ---
-_thread.start_new_thread(mqtt_background_thread, ())
-time.sleep(2) # Give the thread a moment to initial connect
-mqtt_hello_sent_timestamp = -config.MQTT_HELLO_INTERVAL
-mqtt_client.subscribe(config.MQTT_TOPIC_HELLO, qos=config.MQTT_QOS)
 
     while True:
-    # MQTT HELLO sent every x seconds until we get a response from the orchestrator
+        if mqtt_connected:
-    if (orchestrator_id == None and -(mqtt_hello_sent_timestamp - time.time()) > config.MQTT_HELLO_INTERVAL):
+            try:
-        print("[Main] Attempting to send initial hello to orchestrator...")
+                mqtt_client.poll()
-        queue_publish(config.MQTT_TOPIC_HELLO, payloads.mqtt_hello(DEVICE_ID))
+                now = time.time()
-        mqtt_hello_sent_timestamp = time.time()
+                if now - last_ping >= 15:
-        pass
+                    mqtt_client.ping()
+                    last_ping = now
+            except OSError as e:
+                print("[MQTT Task] Socket error encountered during poll/ping:", e)
+                mqtt_connected = False
+                await connect_mqtt_async()
 
-    # 1. Listen for incoming UART serial packets from the WROOM board
+        await asyncio.sleep_ms(30)
-    while uart_device.any():
-        command = uart_device.read_as_command()
-        if command:
-            print(f"[Main] Received command from LoRa Board: {command.command_type}")
-            if command.command_type == UARTCommandType.COOKING_STATE_UPDATE:
-                # Handle cooking state update command
-                new_state = command.payload.get("state", None)
-                print(f"[Main] Cooking state update received: {new_state}")
-                on_received_cooking_state_update(new_state)
-            else:
-                print(f"[Main] Unknown command type received: {command.command_type}")
-        else:
-            # Fallback to reading as a raw string if parsing fails
-            raw_command = uart_device.read()
-            print(f"[Main] Received raw command from WiFi Board: {raw_command}")
 
-    # 2. Example: Send data to the Heltec board every 5 seconds
+
-    # uart_device.send("Status Check: WiFi Active")
+async def orchestrator_hello_task():
-    time.sleep(1)
+    global mqtt_connected, should_unsubscribe_hello
+    while True:
+        if orchestrator_id is not None:
+            if should_unsubscribe_hello:
+                try:
+                    mqtt_client.unsubscribe(config.MQTT_TOPIC_HELLO)
+                    should_unsubscribe_hello = False
+                    print("[MQTT] Successfully unsubscribed from hello topic.")
+                except Exception as e:
+                    print("[MQTT] Unsubscribe error:", e)
+            
+            # Hello successfully acknowledged! Stop looping this task.
+            print("[Hello Task] Orchestrator acknowledged. Stopping hello task.")
+            break
+                
+        if mqtt_connected:
+            print("[Hello Task] Sending initial hello to orchestrator...")
+            try:
+                if mqtt_client is None:
+                    print("[Hello Task] MQTT client is None. Attempting to reconnect...")
+                    await connect_mqtt_async()
+                    
+                mqtt_client.publish(
+                    config.MQTT_TOPIC_HELLO,
+                    payloads.mqtt_hello(DEVICE_ID),
+                    qos=config.MQTT_QOS,
+                )
+            except OSError as e:
+                print("[Hello Task] Hello publish failed:", e)
+                # mqtt_connected = False
+
+        await asyncio.sleep(config.MQTT_HELLO_INTERVAL)
+
+
+async def memory_cleanup_task():
+    while True:
+        gc.collect()
+        await asyncio.sleep(10)
+
+
+# --- MAIN ENTRY POINT ---
+async def main():
+    global sensor_request_event
+    print("[Main] Starting application...")
+    
+    # Initialize loop-bound events
+    sensor_request_event = asyncio.Event()
+
+    await connect_mqtt_async()
+    init_hardware()
+
+    # Launch background tasks
+    asyncio.create_task(mqtt_poll_task())
+    asyncio.create_task(orchestrator_hello_task())
+    asyncio.create_task(sensor_publisher_task())
+    asyncio.create_task(uart_task())
+    asyncio.create_task(memory_cleanup_task())
+
+    print("[Main] All tasks running concurrently!")
+
+    while True:
+        await asyncio.sleep(3600)
+
+
+try:
+    asyncio.run(main())
+except KeyboardInterrupt:
+    print("[Main] Program stopped by user.")

orchestrateur/main.py

@@ -1,58 +1,52 @@
 import base64
 import json
-import threading
-import queue
 import time
 import traceback
-
+import asyncio
 import requests
+
 from orchestrateur.sensors import gps
 from shared import get_lora, get_mqtt_client, deviceTypes, config, payloads
 from shared.logging import log
+from shared.cookingState import CookingStates
+from shared.lora_device import LoraCommands
 from sensors import ultrasonicRanger, temp_hum, button, camera
 
 # --- Read Unique Device ID ---
+def get_device_id():
+    for path in ["device_id.txt", "/home/pi/SmartWave/orchestrateur/device_id.txt"]:
         try:
-    with open("device_id.txt", "r") as f:
+            with open(path, "r") as f:
-        DEVICE_ID = f.read().strip()
+                return f.read().strip()
         except Exception:
-    try:
+            pass
-        with open("/home/pi/SmartWave/orchestrateur/device_id.txt", "r") as f:
+    return "RPI_Orchestrateur_Default"
-            DEVICE_ID = f.read().strip()
-    except Exception:
-        DEVICE_ID = "RPI_Orchestrateur_Default"
 
-# Thread-safe queue for application messages
+DEVICE_ID = get_device_id()
-data_queue = queue.Queue()
-cooking_queue = {}
-active_cooks = {}
-active_cooks_lock = threading.Lock()
 
+# --- STATE MACHINE DEFINITIONS ---
+class MicrowaveState:
+    IDLE = "IDLE"                               # Microwave is empty
+    ANALYZING = "ANALYZING"                     # Reading sensors & waiting for IR
+    WAITING_FOR_CLOUD = "WAITING_FOR_CLOUD"     # Waiting for API parameters
+    COOKING = "COOKING"                         # Microwave is active
+    DONE = "DONE"                               # Finished/Stopped, waiting for dish removal
+
+# Global state trackers
+microwave_states = {"2": MicrowaveState.IDLE}
+button_state = False
+async_event_queue = None
+# Async synchronization trackers for MQTT IR sensors responses
+ir_data_cache = {}   # mw_id -> dict of IR readings
+ir_data_events = {}  # mw_id -> asyncio.Event()
+
+
+# --- HARDWARE SETUP ---
 lora = get_lora()
 lora.configure()
 
-def lora_listener():
-    """Background Thread: Listens to LoRa traffic and responds to Heartbeats."""
-    print("Thread Écouteur LoRa démarré.")
-    while True:
-        paquet = lora.receive_packet(timeout_ms=1000)
-        if paquet:
-            donnees = paquet["data"]
-            expediteur_type = donnees.get("type")
-            
-            if expediteur_type == deviceTypes.DEVICE_TYPES["MICROWAVE"]:
-                print(f"\n[Thread LoRa] Heartbeat reçu de {donnees.get('id')}")
-                reponse = {
-                    "id": DEVICE_ID,
-                    "type": deviceTypes.DEVICE_TYPES["ORCHESTRATOR"]
-                }
-                lora.send(reponse)
-            else:
-                data_queue.put({"source": "LoRa", "data": paquet})
-
-# --- Setup & Connect MQTT ---
 mqtt_client = get_mqtt_client(
-    host="192.168.50.1", # Using explicit gateway IP to dodge Docker loopback blocks
+    host="192.168.50.1",
     client_id="smartwave-orchestrateur-" + DEVICE_ID,
     use_tls=config.USE_TLS,
     cafile="/home/pi/SmartWave/orchestrateur/mqtt/certs/ca.crt",
@@ -60,335 +54,306 @@ mqtt_client = get_mqtt_client(
 )
 mqtt_client.connect()
 mqtt_client.subscribe(config.MQTT_TOPIC_SENSOR, qos=config.MQTT_QOS)
-print(f"Subscribed to topic: {config.MQTT_TOPIC_SENSOR}")
 mqtt_client.subscribe(config.MQTT_TOPIC_HELLO, qos=config.MQTT_QOS)
-print(f"Subscribed to topic: {config.MQTT_TOPIC_HELLO}")
 
-# --- THE CRUCIAL PAHO FIX ---
-# Start Paho's internal background thread. This handles all network packets,
-# automatic keepalive pings, and delivery receipts cleanly.
 if hasattr(mqtt_client._client, "loop_start"):
     mqtt_client._client.loop_start()
-    print("Paho MQTT asynchronous network loop started.")
+    print("[MQTT] Paho background loop started.")
 
+# --- BACKGROUND TASKS (PRODUCERS) ---
+async def lora_listener_task():
+    """Polls LoRa and pushes to the async queue."""
+    print("[LoRa] Async listener started.")
+    while True:
+        # Run blocking lora receive in a thread to not block asyncio loop
+        paquet = await asyncio.to_thread(lora.receive_reliable, timeout_ms=100)
+        if paquet:
+            await async_event_queue.put({"source": "LoRa", "data": paquet})
+        await asyncio.sleep(0.05)
 
-def mqtt_listener():
+async def mqtt_listener_task():
-    """Background Thread: Constantly inspects incoming MQTT message cache."""
+    """Polls MQTT cache and pushes to the async queue."""
-    print("Thread MQTT démarré.")
+    print("[MQTT] Async listener started.")
     while True:
         message = mqtt_client.get_message()
-        
         if message:
-            # Try to parse the payload as a python dictionary, but if it fails, just print the raw payload
             try:
                 payload = json.loads(message['payload'])
-            except Exception as e:
+            except Exception:
-                print(f"Error parsing MQTT payload: {e}")
+                payload = message['payload']
-                payload = message['payload']  # Fallback to raw payload if parsing fails
             
-            print(f"\n[Thread MQTT] Message reçu : {message}")
+            # --- SAFE TOPIC DECODING ---
-            data_queue.put({"source": "MQTT", "topic": message['topic'] ,"data": payload})
+            topic = message['topic']
+            if isinstance(topic, bytes):
+                topic = topic.decode('utf-8')
 
-        # Sleep for 100ms. Prevents the thread from turning into an infinite 100% CPU hog.
+            await async_event_queue.put({
-        time.sleep(0.2)
+                "source": "MQTT",
+                "topic": topic,
+                "data": payload
+            })
+        await asyncio.sleep(0.1)
 
-# Button
-button_state = False
 def button_callback():
+    """Button physical interrupt callback."""
     global button_state
+    if microwave_states.get("2") == MicrowaveState.COOKING:
+        print("[Button] Toggling pause/resume for microwave '2'.")
+        lora.send_reliable({"id": DEVICE_ID, "microwave_id": "2", "action": LoraCommands.TOGGLE_PAUSE})
+    else:
         button_state = not button_state
-    print(f"\n[Thread Button] Button state changed to: {button_state}")
+        print(f"[Button] Defrost state toggled to: {button_state}")
 
 button.set_callback(button_callback)
-
-# Launch background monitoring workers
-threading.Thread(target=lora_listener, daemon=True).start()
-threading.Thread(target=mqtt_listener, daemon=True).start()
-# Launch button monitoring thread
 button.start_button_monitoring_thread()
 
-print("Orchestrateur prêt. Le main loop est libre.")
+# --- HARDWARE CONTROLLERS ---
-
-def _tryReadSensorsWithRetries(func, exception=True, max_retries=3, delay=1):
-    """
-    Tries to read the sensor max_retries times until the return value of func is not None.
-    It will then return the value of func. If it fails max_retries times, it will fail if exception is True, otherwise it will return None.
-    """
-    
-    for attempt in range(max_retries):
-        result = func()
-        if result is not None:
-            return result
-        else:
-            log(f"Attempt {attempt + 1} failed. Retrying in {delay} seconds...")
-            time.sleep(delay)
-    
-    if exception:
-        raise Exception(f"Failed to read sensor after {max_retries} attempts.")
-    else:
-        return None
-
-def read_sensors_for_cooking(microwave_id):
-    """Read all sensors and return a dictionary of their values, including the microwave ID."""
-    log("\nLecture des capteurs...")
-    sensor_data = {}
-    sensor_data["microwave_id"] = microwave_id
-    
-    # === Notify the microwave of needed sensor readings ===
-    mqtt_client.publish(config.MQTT_TOPIC_COOKING, payloads.mqtt_cooking_init(microwave_id), qos=config.MQTT_QOS)
-    
-    # Read Ultrasonic Ranger
-    sensor_data["ultrasonic_distance"] = _tryReadSensorsWithRetries(ultrasonicRanger.get_dish_height)
-    log(f"\nLecture du capteur Ultrason : {sensor_data['ultrasonic_distance']}")
-
-    # Read Temperature and Humidity
-    temperature, humidity = temp_hum.get_temperature_and_humidity_with_retry()
-    if temperature is not None and humidity is not None:
-        log(f"\nLecture du capteur Temp/Hum : {temperature}, {humidity}")
-        sensor_data["temperature"] = temperature
-        sensor_data["humidity"] = humidity
-        
-    # Camera
-    def _getPicture():
-        picture_bytes = None
-        try:
-            picture_bytes = camera.get_picture()
-            return picture_bytes
-        except Exception as e:
-            log(f"Error reading camera data: {e}")
-            return None
-    sensor_data["camera_image"] = _tryReadSensorsWithRetries(_getPicture, exception=True)
-    log(f"\nPhoto de la Caméra : {len(sensor_data['camera_image'])} bytes")
-
-    # Read Button State (last because he can still change state while reading other sensors)
-    sensor_data["defrost_mode"] = button_state
-    
-    cooking_queue[microwave_id] = sensor_data
-
-
 def _stop_hardware(microwave_id: str):
-    """
+    print(f"[{microwave_id}] /!\ Emergency stop issued to hardware.")
-    Hardware driver stop — halts magnetron/turntable immediately.
+    # TODO: Add LoRa STOP command here
-    """
-    print(f"[{microwave_id}] 🛑 Emergency stop issued to hardware.")
-    # TODO: Add physical hardware stop command here
-    # e.g., gpio_controller.stop()
 
+# --- ASYNC COOKING LOGIC ---
+def read_local_sensors(microwave_id, initial_dish_height):
+    """Blocking function to read local I2C/SPI sensors. Runs in a thread."""
+    print(f"[{microwave_id}] Reading local physical sensors...")
+    sensor_data = {
+        "microwave_id": microwave_id,
+        "defrost_mode": button_state,
+        "ultrasonic_distance": initial_dish_height  # Reuse height from trigger
+    }
     
-def _send_params_to_microwave(microwave_id: str, cook_time: int, power_level: int, target_temp: float, cancel_event: threading.Event):
+    # Temp / Hum (handles DHT error safely)
-    """
-    Triggers physical microwave execution.
-    """
-    if cancel_event.is_set():
-        return
-
-    print(f"[{microwave_id}] Sending microwave {microwave_id} cooking parameters : {cook_time}s @ {power_level}W power, target temp {target_temp}°C.")
-    mqtt_client.publish(config.MQTT_TOPIC_COOKING, payloads.mqtt_cooking_config(microwave_id, cook_time, power_level, target_temp), qos=config.MQTT_QOS)
-
-def _cooking_worker(microwave_id: str, sensors_data: dict, cancel_event: threading.Event):
-    """Worker function executing cloud API calls and hardware triggers."""
-    URL = "https://smartwave.matthiasg.dev/cooking-params"
-    
     try:
-        # Check cancellation before network call
+        temp, hum = temp_hum.get_temperature_and_humidity_with_retry()
-        if cancel_event.is_set():
+        if temp is not None:
-            print(f"[{microwave_id}] Job canceled before starting API call.")
+            sensor_data["temperature"] = temp
-            return
+            sensor_data["humidity"] = hum
-
-        log(f"[{microwave_id}] Sending sensor data to cloud API...")
-        
-        # Ensure camera_image is encoded to Base64 string if it's currently raw bytes
-        if isinstance(sensors_data.get("camera_image"), bytes):
-            sensors_data["camera_image"] = base64.b64encode(sensors_data["camera_image"]).decode("utf-8")
-        
-        # 1. HTTP Request (15-second timeout)
-        response = requests.post(URL, json=sensors_data, timeout=360)  # timeout for long-running requests
-        
-        # Check cancellation right after network call returns
-        if cancel_event.is_set():
-            print(f"[{microwave_id}] Job was canceled while waiting for cloud response. Discarding result.")
-            return
-
-        log(f"[{microwave_id}] Cloud API responded with : {response.json()}")
-        if response.status_code != 200 and response.status_code != 201:
-            print(f"[{microwave_id}] Cloud API returned error {response.status_code}: {response.json()}")
-        response.raise_for_status()
-        
-        # 2. Extract Response Parameters
-        response_json = response.json()
-        cook_plan = response_json.get("cook_plan", {})
-        
-        cook_time = cook_plan.get("cook_time_seconds")
-        power_level = cook_plan.get("effective_power_watts")
-        target_temp = cook_plan.get("target_temp")
-        dish_name = response_json.get("dish_name", "Unknown Dish")
-
-        if cook_time is None or power_level is None or target_temp is None:
-            print(f"[{microwave_id}] Cloud returned incomplete plan: {response_json}")
-            return
-
-        # Check cancellation before starting physical microwave
-        if cancel_event.is_set():
-            print(f"[{microwave_id}] Job was canceled before starting hardware execution.")
-            return
-
-        print(f"[{microwave_id}] Received plan for '{dish_name}': {cook_time}s @ {power_level}W power, target temp {target_temp}°C.")
-
-        # 3. Start Hardware Execution
-        _send_params_to_microwave(microwave_id, cook_time, power_level, target_temp, cancel_event)
-
-    except requests.exceptions.Timeout:
-        print(f"[{microwave_id}] Request timed out waiting for cloud response.")
-    except requests.exceptions.RequestException as e:
-        print(f"[{microwave_id}] HTTP error reaching cloud API: {e}")
     except Exception as e:
-        print(f"[{microwave_id}] Unexpected error in worker thread: {e}")
+        log(f"[{microwave_id}] DHT read warning: {e}")
-        traceback.print_exc()
-    finally:
-        # Clean up registry entry if this worker was the active one
-        with active_cooks_lock:
-            if active_cooks.get(microwave_id) == cancel_event:
-                del active_cooks[microwave_id]
-
-
-def start_cooking_for_microwave(microwave_id: str, sensors_data: dict):
-    """
-    Sends sensors data to the cloud and starts cooking in a separate thread.
-    If a worker is already running for the given microwave_id, it cancels
-    the previous process and stops the hardware before starting the new one.
-    """
-    with active_cooks_lock:
-        # 1. If an active job exists for this microwave, cancel it
-        if microwave_id in active_cooks:
-            print(f"[{microwave_id}] Existing cooking job detected! Canceling old worker...")
-            active_cooks[microwave_id].set()  # Signal existing thread to abort
-            _stop_hardware(microwave_id)       # Stop hardware immediately
-
-        # 2. Register a new cancellation event for this microwave
-        cancel_event = threading.Event()
-        active_cooks[microwave_id] = cancel_event
-
-    # 3. Start the new background worker thread
-    thread = threading.Thread(
-        target=_cooking_worker,
-        args=(microwave_id, sensors_data, cancel_event),
-        daemon=True
-    )
-    thread.start()
-
-# Sensor reading
-def read_sensors():
-    """Read all sensors and return a dictionary of their values."""
-    log("\nLecture des capteurs...")
-    sensor_data = {}
-    
-    # Read Ultrasonic Ranger
-    distance = ultrasonicRanger.get_dish_height()
-    if distance is not None:
-        log(f"\nLecture du capteur Ultrason : {distance}")
-        sensor_data["ultrasonic_distance"] = distance
-
-    # Read Temperature and Humidity
-    temperature, humidity = temp_hum.get_temperature_and_humidity()
-    if temperature is not None and humidity is not None:
-        log(f"\nLecture du capteur Temp/Hum : {temperature}, {humidity}")
-        sensor_data["temperature"] = temperature
-        sensor_data["humidity"] = humidity
-    
-
-    # Read GPS Data
-    gps_data = gps.get_gps_data()
-    if gps_data:
-        log(f"\nLecture du capteur GPS : {gps_data}")
-        sensor_data["gps"] = gps_data
         
     # Camera
-    picture_bytes = None
     try:
-        picture_bytes = camera.get_picture()
+        sensor_data["camera_image"] = camera.get_picture()
-        log(f"\nLecture du capteur Caméra : {len(picture_bytes)} bytes")
-        sensor_data["camera_image"] = picture_bytes
     except Exception as e:
-        log(f"Error reading camera data: {e}")
+        log(f"[{microwave_id}] Camera read failed: {e}")
-
-    # Read Button State (last because he can still change state while reading other sensors)
-    sensor_data["defrost_state"] = button_state
         
     return sensor_data
 
-# --- MAIN EXECUTION LOOP ---
+
-while True:
+async def handle_new_dish(microwave_id, detected_height):
+    """Triggered when a new dish is placed inside."""
+    microwave_states[microwave_id] = MicrowaveState.ANALYZING
+    print(f"\n[{microwave_id}] 🍽️ Dish detected at {detected_height:.1f} cm! Requesting IR from microwave...")
+
+    # 1. Setup synchronization event and clear previous cache for this microwave
+    event = asyncio.Event()
+    ir_data_events[microwave_id] = event
+    ir_data_cache.pop(microwave_id, None)
+
+    # 2. Send IR request to ESP32 via MQTT immediately
+    mqtt_client.publish(
+        config.MQTT_TOPIC_COOKING, 
+        payloads.mqtt_cooking_init(microwave_id), 
+        qos=config.MQTT_QOS
+    )
+
+    # 3. Start local sensor reading in parallel
+    sensor_task = asyncio.create_task(asyncio.to_thread(read_local_sensors, microwave_id, detected_height))
+
+    # 4. Wait for local sensors to finish reading
+    sensors_data = await sensor_task
+
+    # Check if dish was removed while reading sensors
+    if microwave_states.get(microwave_id) != MicrowaveState.ANALYZING:
+        print(f"[{microwave_id}] Dish removed during sensor read. Aborting.")
+        ir_data_events.pop(microwave_id, None)
+        return
+
+    # 5. Wait for MQTT IR data (if it already arrived, event.wait() returns instantly)
     try:
-        # === TREAT MESSAGE QUEUE ===
+        await asyncio.wait_for(event.wait(), timeout=10.0)
+        ir_payload = ir_data_cache.get(microwave_id, {})
+        sensors_data["ir_initial_temp"] = ir_payload.get("dish_temp")
+        sensors_data["ir_ambient_temp"] = ir_payload.get("ambient_temp")
+        print(f"[{microwave_id}] IR data synchronized successfully: {ir_payload}")
+    except asyncio.TimeoutError:
+        print(f"[{microwave_id}] ⚠️ Timeout waiting for MQTT IR data from ESP32.")
+        sensors_data["ir_initial_temp"] = None
+        sensors_data["ir_ambient_temp"] = None
+    finally:
+        ir_data_events.pop(microwave_id, None)
+
+    # 6. Dispatch cloud request task
+    asyncio.create_task(request_cloud_cooking_plan(microwave_id, sensors_data))
+
+async def request_cloud_cooking_plan(microwave_id, sensors_data):
+    """Sends all data to the cloud and starts the microwave if successful."""
+    microwave_states[microwave_id] = MicrowaveState.WAITING_FOR_CLOUD
+    URL = "https://smartwave.matthiasg.dev/cooking-params"
+    
+    # Format image
+    if isinstance(sensors_data.get("camera_image"), bytes):
+        sensors_data["camera_image"] = base64.b64encode(sensors_data["camera_image"]).decode("utf-8")
+        
+    print(f"[{microwave_id}] Requesting cooking plan from cloud app...")
     try:
-            msg = data_queue.get(block=False)
+        response = await asyncio.to_thread(requests.post, URL, json=sensors_data, timeout=30)
         
-            # print(msg)
+        # Abort if state changed (e.g. user removed dish while waiting for wifi)
+        if microwave_states[microwave_id] != MicrowaveState.WAITING_FOR_CLOUD:
+            print(f"[{microwave_id}] Dish removed during API request. Discarding API plan.")
+            return
 
-            if msg["source"] == "LoRa":
+        response.raise_for_status()
-                print(f"\n[Main Loop] LoRa : Données traitées : {msg['data']}")
+        plan = response.json().get("cook_plan", {})
-            elif msg["source"] == "MQTT":
+        c_time = plan.get("cook_time_seconds")
-                # MQTT HELLO
+        c_power = plan.get("effective_power_watts")
-                if (msg["topic"] == config.MQTT_TOPIC_HELLO.decode('utf-8')):
+        c_temp = plan.get("target_temp")
-                    if ("id_orchestrator" in msg["data"] and msg["data"]["id_orchestrator"] == DEVICE_ID):
-                        # Do not answer to messages coming from me
-                        continue
-                    microwave_id = msg["data"]["id_microwave"]
-                    print(f"\n[Main Loop] MQTT : Hello reçu de {microwave_id}.")
-                    # Responds 
-                    mqtt_client.publish(config.MQTT_TOPIC_HELLO, payloads.mqtt_hello_ack(DEVICE_ID, microwave_id), qos=config.MQTT_QOS)
-                    print(f"[Main Loop] MQTT : Réponse Hello envoyée à {microwave_id}.")
-                    # TODO : Save in database
-                # MQTT SENSOR DATA
-                elif (msg["topic"] == config.MQTT_TOPIC_SENSOR.decode('utf-8')):
-                    print(f"\n[Main Loop] MQTT : Données capteurs reçues du micro-ondes : {msg['data']}")                
-                    microwave_id = msg["data"].get("id_microwave")
-                    if not microwave_id:
-                        print("[Main Loop] MQTT : Données capteurs reçues sans ID micro-ondes. Ignoré.")
-                        continue
-                    # Get the already existing cooking data for this microwave
-                    sensors_data = cooking_queue.get(microwave_id)
-                    if sensors_data is None:
-                        print(f"[Main Loop] MQTT : Données capteurs reçues pour {microwave_id} mais aucune donnée de cuisson en cours. Ignoré.")
-                        continue
-                    # Merge the received sensor data into the existing cooking data
-                    sensors_data["ir_initial_temp"] = msg["data"].get("dish_temp")
-                    sensors_data["ir_ambient_temp"] = msg["data"].get("ambient_temp")
-                    start_cooking_for_microwave(microwave_id, sensors_data)
-                    # Remove the cooking data from the queue since it's now being processed
-                    del cooking_queue[microwave_id]
         
-                print(f"\n[Main Loop] MQTT : Données traitées : {msg['data']}")
+        if c_time is None or c_power is None or c_temp is None:
-        except queue.Empty:
+            print(f"[{microwave_id}] ❌ Invalid plan received: {response.json()}")
-            pass
+            microwave_states[microwave_id] = MicrowaveState.DONE # Fail safe
+            return
 
-        # === CHECK FOR DISH INSERTED ===
+        print(f"[{microwave_id}] Cloud Plan Received! Starting microwave: {c_time}s @ {c_power}W")
-        # Read the dish height from the ultrasonic sensor. If it's below a certain threshold, we assume a dish has been inserted.
+        microwave_states[microwave_id] = MicrowaveState.COOKING
-        dish_height = ultrasonicRanger.get_dish_height()
+        mqtt_client.publish(
-        if dish_height is not None and dish_height > 2.0:  # Threshold in cm for detecting a dish
+            config.MQTT_TOPIC_COOKING, 
-            print(f"\n[Main Loop] Dish detected at height: {dish_height} cm. Initiating sensor read...")
+            payloads.mqtt_cooking_config(microwave_id, c_time, c_power, c_temp), 
-            # Read all sensors and store the data in the cooking queue for this microwave
+            qos=config.MQTT_QOS
-            read_sensors_for_cooking("2")
+        )
-            print(f"[Main Loop] Sensor data collected and queued for cooking.")
         
-        # DEBUG : Read sensors
-        # sensor_values = read_sensors()
-        # if sensor_values:
-        #     sensor_values_print = sensor_values.copy()
-        #     if "camera_image" in sensor_values_print:
-        #         sensor_values_print["camera_image"] = f"<{len(sensor_values_print['camera_image'])} bytes>"
-        #     print(f"\nCapteurs Données lues : {sensor_values_print}")
-            
-        time.sleep(3)
-        
-        
-    except KeyboardInterrupt:
-        break
     except Exception as e:
-        traceback.print_exc()
+        print(f"[{microwave_id}] Cloud API Error: {e}")
-        time.sleep(1)  # Prevents rapid error logging in case of persistent issues
+        microwave_states[microwave_id] = MicrowaveState.DONE
 
-# Clean termination
+# --- MAIN LOGIC TASKS ---
+async def process_messages_task():
+    """Consumes the unified event queue."""
+    while True:
+        msg = await async_event_queue.get()
+        source = msg["source"]
+        data = msg["data"]
+        
+        if source == "LoRa":
+            if "new_cooking_state" in data.get("data", {}):
+                mw_id = data["data"].get("id")
+                n_state = data["data"].get("new_cooking_state")
+                print(f"[LoRa] Microwave {mw_id} state changed to: {n_state}")
+                
+                if n_state == CookingStates.IDLE and microwave_states.get(mw_id) == MicrowaveState.COOKING:
+                    microwave_states[mw_id] = MicrowaveState.DONE
+                    print(f"[{mw_id}] Cooking finished. Waiting for user to remove dish.")
+                    
+        elif source == "MQTT":
+            topic = msg["topic"]
+            
+            # Helper to normalize config topics to str
+            def to_str(val):
+                return val.decode('utf-8') if isinstance(val, bytes) else val
+
+            hello_topic = to_str(config.MQTT_TOPIC_HELLO)
+            sensor_topic = to_str(config.MQTT_TOPIC_SENSOR)
+            
+            if topic == hello_topic:
+                if data.get("id_orchestrator") != DEVICE_ID:
+                    mw_id = data.get("id_microwave")
+                    print(f"[MQTT] Hello from {mw_id}. Sending ACK.")
+                    mqtt_client.publish(
+                        config.MQTT_TOPIC_HELLO,
+                        payloads.mqtt_hello_ack(DEVICE_ID, mw_id),
+                        qos=config.MQTT_QOS
+                    )
+            
+            elif topic == sensor_topic:
+                mw_id = str(data.get("id_microwave"))
+                print(f"[MQTT] Sensor data received for microwave {mw_id}: {data}")
+                
+                # Store IR data and notify the waiting dish handler
+                ir_data_cache[mw_id] = data
+                if mw_id in ir_data_events:
+                    ir_data_events[mw_id].set()
+
+async def get_filtered_dish_height(samples=3, delay=0.04):
+    """Reads ultrasonic sensor multiple times and returns the median, discarding invalid zeros."""
+    valid_samples = []
+    for _ in range(samples):
+        h = await asyncio.to_thread(ultrasonicRanger.get_dish_height)
+        # Discard 0.0 or near-zero timeout glitches
+        if h is not None and h > 0.5:
+            valid_samples.append(h)
+        await asyncio.sleep(delay)
+    
+    if valid_samples:
+        valid_samples.sort()
+        return valid_samples[len(valid_samples) // 2]  # Median sample
+    return None  # All reads failed or out of range
+
+
+async def monitor_dish_height_task():
+    """Monitors presence of dish with hysteresis and debouncing."""
+    mw_id = "2"
+    consecutive_present = 0
+    consecutive_absent = 0
+    REQUIRED_STABLE_READS = 3  # Must see 3 stable states in a row (~1 second)
+
+    while True:
+        dist = await get_filtered_dish_height()
+        current_state = microwave_states.get(mw_id, MicrowaveState.IDLE)
+        
+        if dist is not None:
+            # Hysteresis Thresholds:
+            # - Must be > 2.5 cm to detect dish insertion
+            # - Must be < 1.2 cm to detect dish removal
+            if dist > 2.5:
+                consecutive_present += 1
+                consecutive_absent = 0
+            elif dist < 1.2:
+                consecutive_absent += 1
+                consecutive_present = 0
+            else:
+                # Dead-zone (1.2cm to 2.5cm) -> Noise buffer
+                consecutive_present = 0
+                consecutive_absent = 0
+
+            # --- DISH INSERTED CONFIRMED ---
+            if consecutive_present >= REQUIRED_STABLE_READS and current_state == MicrowaveState.IDLE:
+                consecutive_present = 0
+                asyncio.create_task(handle_new_dish(mw_id, dist))
+
+            # --- DISH REMOVED CONFIRMED ---
+            elif consecutive_absent >= REQUIRED_STABLE_READS and current_state != MicrowaveState.IDLE:
+                consecutive_absent = 0
+                print(f"\n[{mw_id}] Dish Removed! Resetting state to IDLE.")
+                microwave_states[mw_id] = MicrowaveState.IDLE
+                if current_state == MicrowaveState.COOKING:
+                    _stop_hardware(mw_id)
+                # Remove from IR cache and events
+                ir_data_cache.pop(mw_id, None)
+                ir_data_events.pop(mw_id, None)
+        
+        await asyncio.sleep(0.3)
+
+# --- BOOTSTRAP ---
+async def main():
+    global async_event_queue
+    print("🚀 Orchestrateur Asyncio prêt. Lancement des tâches...")
+    
+    async_event_queue = asyncio.Queue()
+    
+    await asyncio.gather(
+        lora_listener_task(),
+        mqtt_listener_task(),
+        process_messages_task(),
+        monitor_dish_height_task()
+    )
+
+if __name__ == "__main__":
+    try:
+        asyncio.run(main())
+    except KeyboardInterrupt:
+        print("\nArrêt manuel.")
+    finally:
         if hasattr(mqtt_client._client, "loop_stop"):
             mqtt_client._client.loop_stop()
         mqtt_client.close()

orchestrateur/sensors/button.py

@@ -11,7 +11,8 @@ grovepi.pinMode(button, "INPUT")
 button_callback = None
 
 def read_button_state():
-    if not grove_lock.acquire(timeout=0.05):
+    # Increase timeout slightly so the button thread can wait for long I2C sensor reads to finish
+    if not grove_lock.acquire(timeout=0.2):
         return None
     try:
         return grovepi.digitalRead(button)
@@ -26,15 +27,18 @@ def monitor_button():
     last_button_state = button_switch_state
     
     while True:
-        time.sleep(0.04) 
-
         current_state = read_button_state()
         
         if current_state is not None:
+            # Rising edge detection (0 -> 1 transition)
             if current_state == 1 and last_button_state == 0:
                 if button_callback:
                     button_callback()
             last_button_state = current_state
+            time.sleep(0.02)  # Fast 20ms poll when lock is clear
+        else:
+            # Lock was busy; retry quickly without updating last_button_state
+            time.sleep(0.01)
 
 def start_button_monitoring_thread():
     threading.Thread(target=monitor_button, daemon=True).start()

orchestrateur/tests/main_lora.py

@@ -7,7 +7,7 @@ lora.configure()
 print("Raspberry Pi : En attente active de JSON...")
 
 while True:
-    paquet = lora.receive_packet(timeout_ms=5000)
+    paquet = lora.receive_reliable(timeout_ms=5000)
     if paquet:
         # Plus besoin de décoder du HEX ou de parser du JSON manuellement !
         groupe = paquet['group']

shared/__init__.py

@@ -5,6 +5,11 @@ import shared.deviceTypes as deviceTypes
 import shared.config as config
 import shared.payloads as payloads
 import shared.cookingState as cookingState
+import shared.safeQueue as safeQueue
+try:
+    import shared.lora_device as lora_device
+except ImportError:
+    pass  # No need
 try:
     import shared.uart_comm as uart_comm
 except ImportError:

shared/config.py

@@ -1,7 +1,7 @@
 DEBUG=True
 
 # LoRa
-HEARTBEAT_INTERVAL = 30
+LORA_HEARTBEAT_INTERVAL = 30
 
 # MQTT
 MQTT_BROKER_HOST = "192.168.50.1"

shared/cookingState.py

@@ -13,6 +13,7 @@ class CookingState:
         self.temperature_provider = temperature_provider
         self.on_state_change = on_state_change
         self.on_refresh = on_refresh
+        self.on_pause = None
 
         self.state = CookingStates.COOKING
         self.paused = False
@@ -24,6 +25,7 @@ class CookingState:
         self.estimated_remaining_time = float(cook_time)
         self._last_temperature_sample = None
         self._last_refresh_signature = None
+        self._stirred = False
 
     def set_temperature_provider(self, temperature_provider):
         self.temperature_provider = temperature_provider
@@ -34,14 +36,18 @@ class CookingState:
     def set_refresh_callback(self, callback):
         self.on_refresh = callback
         
+    def set_pause_callback(self, callback):
+        self.on_pause = callback
+
     def pause(self):
         if self.paused:
             return
 
         self.paused = True
         self._pause_started_at = time.time()
-        self._notify_refresh(force=True)
+        # self._notify_refresh(force=True)
-
+        if self.on_pause:
+            self.on_pause(self)
     def unpause(self):
         if not self.paused:
             return
@@ -50,15 +56,16 @@ class CookingState:
         if self._pause_started_at is not None:
             self._paused_duration += now - self._pause_started_at
 
-        self._pause_started_at = None
+        # self._pause_started_at = None
         self.paused = False
-        self._notify_refresh(force=True)
+        # self._notify_refresh(force=True)
 
     def toggle_pause(self):
         if self.paused:
             self.unpause()
         else:
             self.pause()
+        self.on_pause(self)
 
     def set_state(self, state):
         if self.state == state:
@@ -154,6 +161,8 @@ class CookingState:
         self.on_refresh(self)
 
     def update_tick(self):
+        if self.state == CookingStates.IDLE:
+            return self.state
         if self.paused:
             self._notify_refresh()
             return self.state
@@ -170,17 +179,19 @@ class CookingState:
         elapsed_time = self.get_elapsed_time()
         self.estimated_remaining_time = self.get_remaining_time_estimation()
         
+        print(elapsed_time, self.cook_time, self.current_dish_temp, self.target_temp, self._paused_duration, self._pause_started_at, now)
+
         if self.current_dish_temp is not None:
-            if elapsed_time < (self.cook_time / 2.0) and self.current_dish_temp >= self.target_temp:
+            if elapsed_time < (self.cook_time / 2.0) and self.current_dish_temp >= self.target_temp and (self._paused_duration == None or self._paused_duration < 5):  # If the dish is heating too fast, we require stirring
                 self.state = CookingStates.STIRRING_REQUIRED
                 self.pause()
             elif elapsed_time >= self.cook_time and self.current_dish_temp >= (self.target_temp - self.TEMPERATURE_TOLERANCE):
                 self.state = CookingStates.DONE
-            elif self.state == CookingStates.DONE and self.current_dish_temp < (self.target_temp - self.TEMPERATURE_TOLERANCE):
+            elif elapsed_time >= self.cook_time * 1.25 and (self._paused_duration == None or self._paused_duration < 5): # If the dish is not heating up
-                self.state = CookingStates.COOKING
-            elif elapsed_time >= self.cook_time * 1.25: # If the dish is not heating up
                 self.state = CookingStates.STIRRING_REQUIRED
                 self.pause()
+            elif self._pause_started_at != None and (self._pause_started_at + self._paused_duration) < (now - (self.cook_time * 0.75)): # If the dish had to be pause and it's been a long time, we stop the cooking
+                self.state = CookingStates.DONE
 
             self._last_temperature_sample = (now, self.current_dish_temp)
 
@@ -197,3 +208,10 @@ class CookingStates:
     DONE = 2
     ALERT = 3 # Microwave is too hot internally or other alerts
     IDLE = 4 # Waiting for cooking parameters to be set, or after cooking is done
+    
+    @staticmethod
+    def get_state_name(state_val):
+        for key, value in CookingStates.__dict__.items():
+            if value == state_val and not key.startswith('__'):
+                return key
+        return "UNKNOWN"

shared/lora_device.py

@@ -1,5 +1,6 @@
 import sys
 import time
+import random
 
 IS_MICROPYTHON = sys.implementation.name == 'micropython'
 
@@ -8,49 +9,253 @@ if IS_MICROPYTHON:
     from machine import Pin, SPI
     import ubinascii
     import ujson as json
+else:
+    import threading
+    import serial
+    import json
 
+
+# --- BASE RELIABLE LORA DEVICE ---
+class BaseLoraDevice:
+    """Base class providing automatic ACK generation, retries, and duplicate filtering."""
+
+    def __init__(self):
+        self.processed_msg_ids = set()
+        self.received_acks = set()
+        self.pending_rx_queue = []
+        self.default_group = 2
+
+    def _generate_msg_id(self):
+        return random.getrandbits(16)
+
+    def _send_ack(self, ack_id):
+        """Sends an immediate acknowledgement packet back to the sender."""
+        print(f"[ReliableLoRa] -> Triggering ACK send for msg_id: {ack_id}")
+        if IS_MICROPYTHON:
+            time.sleep_ms(10)
+        else:
+            time.sleep(0.01)
+
+        ack_payload = {"_type": "_ack", "_ack_id": ack_id}
+        self.send(ack_payload)
+
+    def _process_incoming_packet(self, packet):
+        """Internal packet processor: handles ACKs and deduplication."""
+        if not packet or packet.get("raw"):
+            return packet
+
+        data = packet.get("data")
+        if isinstance(data, dict):
+            # 1. Handle incoming ACK response
+            if data.get("_type") == "_ack":
+                ack_id = data.get("_ack_id")
+                print(f"[ReliableLoRa] <- SUCCESSFULLY MATCHED ACK ID: {ack_id}")
+                if ack_id is not None:
+                    self.received_acks.add(ack_id)
+                    if len(self.received_acks) > 100:
+                        self.received_acks.clear()
+                return None  # Drop internal protocol message from user queue
+
+            # 2. Handle incoming command expecting an ACK
+            msg_id = data.get("_msg_id")
+            if msg_id is not None:
+                print(f"[ReliableLoRa] <- Received packet with msg_id {msg_id}. Queuing ACK.")
+                self._send_ack(msg_id)
+
+                if msg_id in self.processed_msg_ids:
+                    print(f"[ReliableLoRa] Discarding duplicate retry for msg_id {msg_id}")
+                    return None  # Discard duplicate retry
+
+                self.processed_msg_ids.add(msg_id)
+                if len(self.processed_msg_ids) > 100:
+                    self.processed_msg_ids.clear()
+
+        return packet
+
+    def send_reliable(self, payload, max_retries=4, ack_timeout=2.5):
+        """Sends a payload and retries until an ACK is received or max retries are reached."""
+        lock = getattr(self, 'lock', None)
+        
+        if isinstance(payload, dict):
+            payload = dict(payload)
+        else:
+            payload = {"data": payload}
+
+        msg_id = self._generate_msg_id()
+        payload["_msg_id"] = msg_id
+
+        print(f"\n[ReliableLoRa] === Starting send_reliable for msg_id {msg_id} ===")
+
+        for attempt in range(max_retries):
+            print(f"[ReliableLoRa] Attempt {attempt + 1}/{max_retries} transmitting msg_id {msg_id}")
+            self.send(payload)
+            start_time = time.time()
+
+            while (time.time() - start_time) < ack_timeout:
+                if lock: lock.acquire()
+                try:
+                    if msg_id in self.received_acks:
+                        self.received_acks.remove(msg_id)
+                        print(f"[ReliableLoRa] === ACK received for msg_id {msg_id} on attempt {attempt + 1} ===")
+                        return True
+                finally:
+                    if lock: lock.release()
+
+                packet = self.receive_packet(timeout_ms=500)
+                if packet:
+                    print(f"[ReliableLoRa] Received raw packet while waiting for ACK: {packet}")
+                    if lock: lock.acquire()
+                    try:
+                        filtered_packet = self._process_incoming_packet(packet)
+                        if filtered_packet:
+                            self.pending_rx_queue.append(filtered_packet)
+                    finally:
+                        if lock: lock.release()
+
+                if lock: lock.acquire()
+                try:
+                    if msg_id in self.received_acks:
+                        self.received_acks.remove(msg_id)
+                        print(f"[ReliableLoRa] === ACK received for msg_id {msg_id} after poll ===")
+                        return True
+                finally:
+                    if lock: lock.release()
+
+            print(f"[ReliableLoRa] Attempt {attempt + 1} timed out waiting for ACK for msg_id {msg_id}")
+
+        print(f"[ReliableLoRa] ERROR: Failed to receive ACK for msg_id {msg_id} after {max_retries} attempts.")
+        return False
+
+    def receive_reliable(self, timeout_ms=1000):
+        """Receives a packet, automatically sending ACKs and filtering duplicate retries."""
+        if len(self.pending_rx_queue) > 0:
+            return self.pending_rx_queue.pop(0)
+
+        start_time = time.time()
+        timeout_s = timeout_ms / 1000.0
+
+        while True:
+            elapsed = time.time() - start_time
+            remaining_ms = int((timeout_s - elapsed) * 1000)
+            if remaining_ms <= 0:
+                break
+
+            poll_time = max(50, min(remaining_ms, 300))
+            packet = self.receive_packet(timeout_ms=poll_time)
+            if packet:
+                filtered_packet = self._process_incoming_packet(packet)
+                if filtered_packet:
+                    return filtered_packet
+
+        return None
+
+
+if IS_MICROPYTHON:
     # --- PILOTE SPI DIRECT (ESP32 / Heltec V3) ---
-    class LoraHardwareSPI:
+    class LoraHardwareSPI(BaseLoraDevice):
         def __init__(self, spi_bus=1, clk=9, mosi=10, miso=11, cs=8, irq=14, rst=12, gpio=13):
+            super().__init__()
+            self._pins = {
+                "spi_bus": spi_bus, "clk": clk, "mosi": mosi, "miso": miso,
+                "cs": cs, "irq": irq, "rst": rst, "gpio": gpio
+            }
+            self._cfg = {"freq": 868.1, "bw": 125.0, "sf": 7, "cr": 5, "power": 14}
+            self.lock = _thread.allocate_lock()
+            self.lora = None
+            self.reset_hardware()
+
+        def reset_hardware(self):
+            """Resets SX1262 hardware and recreates driver instance."""
+            with self.lock:
+                try:
+                    irq_pin = Pin(self._pins["irq"], Pin.IN)
+                    irq_pin.irq(handler=None)
+                except Exception:
+                    pass
+
+                try:
+                    rst_pin = Pin(self._pins["rst"], Pin.OUT)
+                    rst_pin.value(0)
+                    time.sleep_ms(30)
+                    rst_pin.value(1)
+                    time.sleep_ms(50)
+                except Exception:
+                    pass
+
+                self.lora = None
+                time.sleep_ms(50)
+
+                try:
                     from sx1262 import SX1262
-            self.lora = SX1262(
+                    new_instance = SX1262(**self._pins)
-                spi_bus=spi_bus, clk=clk, mosi=mosi, miso=miso,
+                    new_instance.begin(
-                cs=cs, irq=irq, rst=rst, gpio=gpio
+                        freq=self._cfg["freq"], bw=self._cfg["bw"], sf=self._cfg["sf"], 
+                        cr=self._cfg["cr"], power=self._cfg["power"], 
+                        useRegulatorLDO=False, crcOn=True, preambleLength=8, implicit=False
                     )
-            self.default_group = 2  # On définit le groupe par défaut ici
+                    # SyncWord 0x12 = Decimal 18
-            self.lock = _thread.allocate_lock() # Création du verrou
+                    new_instance.setSyncWord(0x12)
+                    self.lora = new_instance
+                except Exception as e:
+                    print(f"[LoRa SPI] Initialization error: {e}")
 
         def configure(self, freq=868.1, bw=125.0, sf=7, cr=5, power=14):
+            self._cfg = {"freq": freq, "bw": bw, "sf": sf, "cr": cr, "power": power}
+            if self.lora is None:
+                self.reset_hardware()
+            else:
+                with self.lock:
+                    try:
                         self.lora.begin(
                             freq=freq, bw=bw, sf=sf, cr=cr, power=power, 
                             useRegulatorLDO=False, crcOn=True, preambleLength=8, implicit=False
                         )
-            self.lora.setSyncWord(0x14)
+                        self.lora.setSyncWord(0x12)
+                    except Exception:
+                        self.reset_hardware()
 
         def send(self, payload, group=None):
-            """Encode la payload en JSON si nécessaire, et injecte automatiquement l'octet de groupe."""
+            """Encodes payload into JSON and prepends group byte."""
             with self.lock:
+                if self.lora is None:
+                    return
+
                 if group is None:
                     group = self.default_group
                     
-                # Si c'est un dictionnaire ou une liste, on le convertit en JSON textuel
                 if isinstance(payload, (dict, list)):
                     payload = json.dumps(payload)
                     
                 if isinstance(payload, str):
                     payload = payload.encode('utf-8')
                     
-                # Insertion automatique de l'octet de groupe au tout début de la trame physique
                 paquet_physique = bytes([group]) + payload
+                try:
                     self.lora.send(paquet_physique)
+                except Exception as e:
+                    print(f"[LoRa SPI] Send error: {e}")
 
-        def receive_packet(self, timeout_ms=1000):
+        def receive_packet(self, timeout_ms=500):
-            """Écoute, nettoie, extrait le groupe, gère le HEX et parse le JSON."""
+            """Listens on SPI bus with auto-detection for JSON vs. Grouped headers."""
             with self.lock:
+                if self.lora is None:
+                    return None
+
+                try:
                     data, state = self.lora.recv(len=0, timeout_en=True, timeout_ms=timeout_ms)
-                if state == 0 and len(data) > 1:
+                except Exception as e:
+                    print(f"[LoRa SPI] Recv error caught: {e}")
+                    return None
+
+                if state == 0 and data is not None and len(data) > 0:
+                    if data[0] in (0x7B, 0x5B):  # Starts with '{' or '['
+                        group = self.default_group
+                        payload_brute = data.strip(b'\x00 \r\n\t')
+                    elif len(data) > 1:
                         group = data[0]
                         payload_brute = data[1:].strip(b'\x00 \r\n\t')
+                    else:
+                        return None
                     
                     try:
                         text = payload_brute.decode('utf-8').strip('\x00 \r\n\t')
@@ -76,13 +281,10 @@ if IS_MICROPYTHON:
                 return None
 
 else:
-    import threading
-    import serial
-    import json
-    
     # --- PILOTE SÉRIE (Raspberry Pi / Dragino LA66) ---
-    class LoraSerialAT:
+    class LoraSerialAT(BaseLoraDevice):
         def __init__(self, port):
+            super().__init__()
             self.port = port
             self.ser = serial.Serial(
                 port=self.port,
@@ -95,37 +297,60 @@ else:
             self.ser.reset_input_buffer()
             self.ser.reset_output_buffer()
             self.lock = threading.Lock()
-        def configure(self, **kwargs):
-            pass
             
-        def send(self, payload):
+            # Initial configuration
-            """Encode automatiquement la payload en HEX pour l'envoi via la clé."""
+            self.configure(freq=868.1, sf=7, bw=125)
+
+        def _send_at_cmd(self, cmd, wait_time=0.15):
+            """Helper to send AT command and purge response buffer."""
+            self.ser.write(f"{cmd}\r\n".encode('utf-8'))
+            time.sleep(wait_time)
+            resp = ""
+            while self.ser.in_waiting > 0:
+                resp += self.ser.readline().decode('utf-8', errors='ignore')
+            return resp
+
+        def configure(self, freq=868.1, sf=7, bw=125):
+            """Configures LA66 frequency, SF, BW, SyncWord, CRC, and continuous RX mode."""
             with self.lock:
+                freq_hz = int(freq * 1000000)
+                bw_code = 0 if bw == 125 else 1
+                
+                # Parameters: Freq, SF, BW, CR(0=4/5), Preamble(8), Header(1=Explicit), CRC(1=ON), IQ(0=Standard), NetMode(0=P2P), Power(14), SyncWord(18=0x12), Format(0), Type(1)
+                at_cfg_cmd = f"AT+CFG={freq_hz},{sf},{bw_code},0,8,1,1,0,0,14,18,0,1"
+                self._send_at_cmd(at_cfg_cmd, wait_time=0.2)
+                
+                # Fallback standalone commands
+                self._send_at_cmd("AT+SYNCWORD=18", wait_time=0.1)
+                self._send_at_cmd("AT+PRECV=65535", wait_time=0.1)
+                self.ser.reset_input_buffer()
+
+        def send(self, payload, group=None):
+            """Encodes payload into HEX AT command and re-enables continuous RX."""
+            with self.lock:
+                if group is None:
+                    group = self.default_group
+
                 if isinstance(payload, (dict, list)):
                     payload = json.dumps(payload)
                     
                 if isinstance(payload, str):
                     payload = payload.encode('utf-8')
                     
-                hex_payload = payload.hex()
+                paquet_physique = bytes([group]) + payload
+                hex_payload = paquet_physique.hex()
                 self.ser.reset_input_buffer()
                 
-                # La clé ajoute d'elle-même l'octet de groupe configuré dans ses registres
+                print(f"[RPi LoRa Serial] Transmitting HEX payload: {hex_payload}")
-                cmd = f"AT+SEND=1,{hex_payload},1,3\r\n"
+                cmd = f"AT+PSEND={hex_payload}"
-                # print(f"RPI : Envoi de la commande HEX -> AT+SEND=1,[HEX_DATA],1,3")
+                resp = self._send_at_cmd(cmd, wait_time=0.25)  # Wait for RF TX to finish
-                self.ser.write(cmd.encode('utf-8'))
+                print(f"[RPi LoRa Serial] AT+PSEND response: {resp}")
                 
-                time.sleep(0.2)
+                # Re-enable continuous receive mode after transmission completes
-                response = ""
+                self._send_at_cmd("AT+PRECV=65535", wait_time=0.05)
-                start_wait = time.time()
-                while (time.time() - start_wait) < 1.5:
-                    if self.ser.in_waiting > 0:
-                        response += self.ser.readline().decode('utf-8', errors='ignore')
-                    time.sleep(0.05)
 
-                # print(f"[RPI LA66 TX STATUS] :\n{response.strip()}")
+        def receive_packet(self, timeout_ms=500):
-
+            """Reads incoming serial lines from LA66 stick with robust format parsing."""
-        def receive_packet(self, timeout_ms=5000):
             with self.lock:
                 start_time = time.time()
                 timeout_s = timeout_ms / 1000.0
@@ -136,18 +361,38 @@ else:
                         if line:
                             payload_bytes = None
                             
-                            if "(HEX:)" in line:
+                            # Robust parsing for LA66 response variants (+RECV:, +RCV=, +DRX:, HEX:, Data:)
+                            if "+RECV:" in line:
+                                parts = line.split("+RECV:")[1].strip().split(",")
+                                hex_str = parts[2].strip() if len(parts) >= 3 else parts[0].strip()
+                                try: payload_bytes = bytes.fromhex(hex_str)
+                                except ValueError: pass
+                            elif "+RCV=" in line:
+                                parts = line.split("+RCV=")[1].strip().split(",")
+                                if len(parts) >= 4:
+                                    try: payload_bytes = bytes.fromhex(parts[3].strip())
+                                    except ValueError: pass
+                            elif "+DRX:" in line:
+                                parts = line.split("+DRX:")[1].strip().split(",")
+                                if len(parts) >= 2:
+                                    try: payload_bytes = bytes.fromhex(parts[1].strip())
+                                    except ValueError: pass
+                            elif "(HEX:)" in line:
                                 hex_part = line.split("(HEX:)")[1].strip().replace(" ", "")
-                                try:
+                                try: payload_bytes = bytes.fromhex(hex_part)
-                                    payload_bytes = bytes.fromhex(hex_part)
+                                except ValueError: pass
-                                except ValueError:
-                                    pass
                             elif "Data:" in line:
                                 payload_bytes = line.split("Data:")[1].strip().encode('utf-8')
                             
-                            if payload_bytes and len(payload_bytes) > 1:
+                            if payload_bytes and len(payload_bytes) > 0:
+                                if payload_bytes[0] in (0x7B, 0x5B):
+                                    group = self.default_group
+                                    payload_clean = payload_bytes.strip(b'\x00 \r\n\t')
+                                elif len(payload_bytes) > 1:
                                     group = payload_bytes[0]
                                     payload_clean = payload_bytes[1:].strip(b'\x00 \r\n\t')
+                                else:
+                                    continue
                                 
                                 try:
                                     text = payload_clean.decode('utf-8').strip('\x00 \r\n\t')
@@ -181,3 +426,9 @@ def get_lora_device(port_or_pins=None):
     else:
         port = port_or_pins if port_or_pins else "/dev/serial/by-id/usb-Silicon_Labs_CP2102_USB_to_UART_Bridge_Controller_0001-if00-port0"
         return LoraSerialAT(port)
+
+
+class LoraCommands:
+    PING = "ping"
+    COOKING_STATE_UPDATE = "cooking_state_update"
+    TOGGLE_PAUSE = "toggle_pause"

shared/mqtt.py

@@ -11,13 +11,10 @@ try:
 except ImportError:
     try:
         from umqtt.simple import MQTTClient as _MQTTClient
+        import _thread
+        import gc
         BACKEND_NAME = "umqtt.simple"
         IS_MICROPYTHON = True
-    # except ImportError:
-    #     try:
-    #         from umqtt.robust import MQTTClient as _MQTTClient
-    #         BACKEND_NAME = "umqtt.robust"
-    #         IS_MICROPYTHON = True
     except ImportError as exc:
         raise ImportError("No MQTT client found. Expected paho.mqtt or umqtt.") from exc
 
@@ -79,6 +76,11 @@ class BrokerClient:
         self._client = None
         self._callback = None
         self._messages = []
+        self._cadata = None  # Cache cert bytes to prevent heap fragmentation
+        
+        # Thread safety lock for MicroPython socket reads/writes
+        if IS_MICROPYTHON:
+            self._lock = _thread.allocate_lock()
 
     def set_callback(self, callback):
         self._callback = callback
@@ -104,17 +106,25 @@ class BrokerClient:
             return self._client
 
         if IS_MICROPYTHON:
+            gc.collect()  # Clean Python heap before importing/allocating SSL
             import ssl
             ssl_params = self.ssl_params
             
             if self.use_tls and ssl_params is None:
-                # MicroPython uses context-less structures. 
+                # OPTION A: If broker uses 'require_certificate false' and self-signed certs:
-                # If your CA is self-signed, validation can fail without a valid hostname match.
+                # Do NOT pass cadata when cert_reqs is CERT_NONE to save ~20KB of C-DRAM
                 ssl_params = {
-                    "cert_reqs": ssl.CERT_NONE, # Temporarily change to NONE to test if validation is the culprit
+                    "cert_reqs": ssl.CERT_NONE,
-                    "cadata": _read_file_bytes(self.cafile)
+                    "server_hostname": self.host
                 }
 
+                # OPTION B: If strict CA validation IS required, load cadata ONLY with CERT_REQUIRED:
+                # ssl_params = {
+                #     "cert_reqs": ssl.CERT_REQUIRED,
+                #     "cadata": _read_file_bytes(self.cafile),
+                #     "server_hostname": self.host
+                # }
+                
             client = _MQTTClient(
                 self.client_id or "smartWave-client",
                 self.host,
@@ -150,18 +160,34 @@ class BrokerClient:
         return self._client
 
     def connect(self):
-        client = self.open()
         if IS_MICROPYTHON:
+            gc.collect()  # Force C & Python memory cleanup right before TLS handshake
+
+        if self._client is not None:
+            self.close()
+        
+        client = self.open()
+        
+        try:
+            if IS_MICROPYTHON:
+                gc.collect()  # Sweep memory right before umqtt calls ssl.wrap_socket()
+                with self._lock:
                     client.connect()
                 return client
 
             client.connect(self.host, self.port, self.keepalive)
             return client
+        except Exception as e:
+            print("MQTT connection failed, closing client and releasing memory.")
+            print("Exception:", e)
+            self.close()
+            raise
 
     def publish(self, topic, payload, qos=2, retain=False):
         client = self.open()
         payload_bytes = _ensure_bytes(payload)
         if IS_MICROPYTHON:
+            with self._lock:
                 return client.publish(topic, payload_bytes, retain=retain, qos=qos)
         
         if isinstance(topic, bytes):
@@ -172,6 +198,7 @@ class BrokerClient:
     def subscribe(self, topic, qos=2):
         client = self.open()
         if IS_MICROPYTHON:
+            with self._lock:
                 client.set_callback(self._on_micropython_message)
                 return client.subscribe(topic, qos=qos)
             
@@ -184,27 +211,43 @@ class BrokerClient:
         client = self.open()
         if IS_MICROPYTHON:
             import struct
-            # Ensure the topic is bytes for writing to the socket
+            import time
             topic_bytes = topic if isinstance(topic, bytes) else topic.encode('utf-8')
             
-            # 1. Build the MQTT unsubscribe packet header
+            # 1. Increment and lock the PID for THIS specific request
+            client.pid = (client.pid % 65535) + 1
+            sent_pid = client.pid  # <-- Store local copy
+            
+            # 2. Construct UNSUBSCRIBE packet
+            rem_len = 2 + 2 + len(topic_bytes)
             pkt = bytearray(b"\xa2\0\0\0")
-            client.pid += 1
+            struct.pack_into("!BH", pkt, 1, rem_len, sent_pid)
             
-            # Packet length is: 2 bytes (PID) + 2 bytes (topic length indicator) + topic string length
+            # 3. Write packet to socket
-            struct.pack_into("!BH", pkt, 1, 2 + 2 + len(topic_bytes), client.pid)
-            
-            # 2. Write the packet to the socket
             client.sock.write(pkt)
             client._send_str(topic_bytes)
             
-            # 3. Wait for the UNSUBACK confirmation frame (0xB0) from the broker
+            # 4. Wait for UNSUBACK (0xB0)
-            while True:
+            start = time.time()
+            while time.time() - start < 3:
                 op = client.wait_msg()
                 if op == 0xB0:
-                    resp = client.sock.read(3)
+                    resp = bytearray(3)
-                    assert resp[1] == pkt[2] and resp[2] == pkt[3]
+                    read_bytes = 0
+                    while read_bytes < 3:
+                        chunk = client.sock.read(3 - read_bytes)
+                        if chunk:
+                            resp[read_bytes:read_bytes + len(chunk)] = chunk
+                            read_bytes += len(chunk)
+                        else:
+                            time.sleep_ms(10)
+                    
+                    # Compare against sent_pid instead of client.pid
+                    resp_pid = (resp[1] << 8) | resp[2]
+                    if resp_pid != sent_pid:
+                        print(f"[MQTT] UNSUBACK PID mismatch (expected {sent_pid}, got {resp_pid})")
                     return client
+            
             return client
             
         if isinstance(topic, bytes):
@@ -219,6 +262,7 @@ class BrokerClient:
         if self._client is None:
             return None
         if IS_MICROPYTHON:
+            with self._lock:
                 return self._client.check_msg()
         return self._client.loop(timeout=timeout)
 
@@ -226,6 +270,7 @@ class BrokerClient:
         if self._client is None:
             return None
         if IS_MICROPYTHON:
+            with self._lock:
                 return self._client.wait_msg()
         return self._client.loop_forever()
 
@@ -235,14 +280,41 @@ class BrokerClient:
         return self._messages.pop(0)
 
     def close(self):
+        """Safely clean up socket context without causing ESP32 C panics."""
         if self._client is None:
             return
+            
+        if IS_MICROPYTHON:
+            with self._lock:
+                try:
+                    if hasattr(self._client, "sock") and self._client.sock:
+                        self._client.sock.close()
+                except Exception:
+                    pass
+                finally:
+                    if hasattr(self._client, "sock"):
+                        self._client.sock = None
+                    self._client = None
+                    gc.collect()  # Immediately reclaim freed socket & mbedTLS RAM
+        else:
             try:
                 self._client.disconnect()
             except Exception:
                 pass
+            finally:
                 self._client = None
                 
+    def ping(self):
+        """Thread-safe PINGREQ wrapper for MicroPython."""
+        if self._client is None:
+            return
+        if IS_MICROPYTHON:
+            with self._lock:
+                return self._client.ping()
+        else:
+            # Paho handles keepalives automatically via loop_start/loop
+            pass
+
     def __enter__(self):
         self.connect()
         return self

shared/safeQueue.py

@@ -0,0 +1,37 @@
+import _thread
+
+class SafeQueue:
+    """A lightweight, thread-safe FIFO queue for MicroPython."""
+    def __init__(self, maxsize=20):
+        self._queue = []
+        self._lock = _thread.allocate_lock()
+        self.maxsize = maxsize
+
+    def put(self, item) -> bool:
+        """Push an item to the end of the queue. Returns False if queue is full."""
+        with self._lock:
+            if len(self._queue) < self.maxsize:
+                self._queue.append(item)
+                return True
+            else:
+                print("[Queue Warning] Buffer full, dropping oldest message.")
+                self._queue.pop(0)  # Drop oldest to make room
+                self._queue.append(item)
+                return False
+
+    def get(self):
+        """Pop and return the oldest item from the queue, or None if empty."""
+        with self._lock:
+            if self._queue:
+                return self._queue.pop(0)
+        return None
+
+    def empty(self) -> bool:
+        """Check if the queue has no items."""
+        with self._lock:
+            return len(self._queue) == 0
+
+    def size(self) -> int:
+        """Return current number of queued items."""
+        with self._lock:
+            return len(self._queue)

shared/uart_comm.py

@@ -5,98 +5,42 @@ import ujson
 
 class SafeUART:
     def __init__(self, uart_id, tx_pin, rx_pin, baudrate=115200):
-        # Initialize the hardware UART channel
+        # Setting timeout allows readline() to be non-blocking
         self.uart = UART(uart_id, baudrate=baudrate, tx=tx_pin, rx=rx_pin, timeout=10, rxbuf=1024)
-        
-        # Core thread-safety assets
         self.lock = _thread.allocate_lock()
         self.rx_queue = []
-        self.buffer = b""
         
-        # Start the background data worker thread
+        _thread.stack_size(4096)
-        _thread.stack_size(4096) # Cap the stack size for the UART listener
         _thread.start_new_thread(self._listener_worker, ())
         _thread.stack_size(0)
 
-        print(f"[UART] Thread initialized on UART{uart_id} (TX:{tx_pin}, RX:{rx_pin})")
-
     def _listener_worker(self):
-        """Worker loop that handles nested JSON structures by tracking brace depth."""
+        """Simple worker that relies on newline framing instead of manual JSON parsing."""
         while True:
-            messages_found = []
-            
-            with self.lock:
             if self.uart.any():
-                    chunk = self.uart.read()
-                    if chunk is not None and isinstance(chunk, bytes):
-                        self.buffer += chunk
-                
-                # Extract complete JSON objects while accounting for nested braces
-                while True:
-                    start_idx = self.buffer.find(b'{')
-                    if start_idx == -1:
-                        # No starting brace; clear any garbage bytes currently in buffer
-                        self.buffer = b""
-                        break
-                    
-                    # Trim any leading noise before the first '{'
-                    if start_idx > 0:
-                        self.buffer = self.buffer[start_idx:]
-                    
-                    # Track depth to find the matching OUTER '}'
-                    depth = 0
-                    in_string = False
-                    escape = False
-                    end_idx = -1
-                    
-                    for i in range(len(self.buffer)):
-                        b = self.buffer[i]
-                        
-                        # Ignore braces inside string literals ("...")
-                        if b == 34 and not escape:  # 34 is ASCII for '"'
-                            in_string = not in_string
-                        elif b == 92 and in_string: # 92 is ASCII for '\'
-                            escape = not escape
-                            continue
-                        elif not in_string:
-                            if b == 123:   # '{'
-                                depth += 1
-                            elif b == 125: # '}'
-                                depth -= 1
-                                if depth == 0:
-                                    end_idx = i
-                                    break
-                        escape = False
-                    
-                    if end_idx != -1:
-                        # Full nested JSON object extracted safely
-                        json_bytes = self.buffer[:end_idx + 1]
-                        self.buffer = self.buffer[end_idx + 1:]
-                        messages_found.append(json_bytes)
-                    else:
-                        # The complete outer JSON hasn't fully arrived yet; wait for next UART chunk
-                        break
-
-            # Process valid complete frames outside the lock
-            for json_bytes in messages_found:
-                try:
-                    decoded_str = json_bytes.decode('utf-8')
                 with self.lock:
-                        self.rx_queue.append(decoded_str)
+                    line = self.uart.readline()
-                except Exception as e:
+                
-                    print(f"[UART Parse Error]: {e}")
+                if line:
+                    try:
+                        decoded = line.decode('utf-8').strip()
+                        if decoded:  # Ignore empty lines
+                            with self.lock:
+                                self.rx_queue.append(decoded)
+                    except UnicodeError:
+                        pass  # Drop corrupted bytes cleanly
             
             time.sleep_ms(10)
 
     def send(self, message):
-        """Safely pushes strings across the serial wire from any thread context."""
         if not message.endswith('\n'):
             message += '\n'
-        
-        data = message.encode('utf-8')
-        
         with self.lock:
-            self.uart.write(data)
+            self.uart.write(message.encode('utf-8'))
+
+    def read(self):
+        with self.lock:
+            return self.rx_queue.pop(0) if self.rx_queue else None
             
     def send_as_command(self, command: 'UARTCommand'):
         """Safely sends a structured command over UART."""
@@ -108,13 +52,6 @@ class SafeUART:
         with self.lock:
             return len(self.rx_queue) > 0
     
-    def read(self):
-        """Pulls the oldest unread string from the queue. Returns None if empty."""
-        with self.lock:
-            if self.rx_queue:
-                return self.rx_queue.pop(0)
-        return None
-    
     def read_as_command(self) -> 'UARTCommand | None':
         """Attempts to read the oldest unread string and parse it as a UARTCommand. Returns None if empty or invalid."""
         raw_message = self.read()

tests/mqtt/micropython_example.py

@@ -4,7 +4,7 @@ Edit BROKER_HOST so it points to the broker machine IP address.
 Do not use localhost from the ESP32.
 """
 
-from shared.mqtt import BrokerClient
+import shared
 
 
 BROKER_HOST = "192.168.50.1"
@@ -17,7 +17,7 @@ def on_message(message):
 
 
 def main():
-    client = BrokerClient(
+    client = shared.get_mqtt_client(
         host=BROKER_HOST,
         client_id="smartwave-esp32-demo",
         use_tls=True,
@@ -28,7 +28,7 @@ def main():
     client.set_callback(on_message)
     client.connect()
     client.subscribe(TOPIC, qos=2)
-    client.publish(TOPIC, b"hello from MicroPython", qos=2, retain=False)
+    client.publish(TOPIC, b"hello from MicroPython", qos=1, retain=False)
 
     for _ in range(30):
         client.poll()