Beginning of cooking cycle

micro_ondes/esp_lora/main.py

@@ -1,6 +1,9 @@
 import _thread
 from machine import Pin
-from sensors import RGBLED
+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
 import time
 
 # --- Configuration Matérielle ---
@@ -21,7 +24,7 @@ lora.configure(freq=868.1, sf=7)
 
 # --- Création des lEDs RGB ---
 magnetron_led = RGBLED(red_pin=48, green_pin=47, blue_pin=33)
-magnetron_led.set_color(RGBLED.YELLOW)
+magnetron_led.color = RGBLED.WHITE_YELLOW
 magnetron_led.off()
 
 print(f"ESP32 initialisé avec l'ID : '{DEVICE_ID}' (Type : {deviceTypes.DEVICE_TYPES['MICROWAVE']})")
@@ -58,17 +61,69 @@ uart_device = get_uart(uart_id=1, tx_pin=46, rx_pin=45)
 # Lancer la boucle de heartbeat dans un thread séparé
 _thread.start_new_thread(heartbeat_loop, ())
 
+# Cooking parameters
+cooking_state = None
+def cooking_state_temperature_provider():
+    return 22.0, 29.0 # TODO Remplacer par la lecture réelle de la température du plat et de l'air ambiant
+
+def cooking_state_on_state_change(state):
+    print(f"[Main] Cooking state changed to: {state.state}")
+    
+    # Send to the Wifi board the current state
+    uart_device.send_as_command(UARTCommand(UARTCommandType.COOKING_STATE_UPDATE, {"state": state.state}))
+    
+    if state.paused or state.state == cookingState.CookingStates.DONE:
+        magnetron_led.off()
+    else:
+        magnetron_led.on()
+    
+    
+    if state.state == cookingState.CookingStates.COOKING:
+        pass
+    if state.state == cookingState.CookingStates.STIRRING_REQUIRED:
+        pass
+    if state.state == cookingState.CookingStates.DONE:
+        global cooking_state
+        cooking_state = None
+    if state.state == cookingState.CookingStates.ALERT:
+        pass
+
+def cooking_state_on_refresh(state):
+    # TODO Show screen information
+    pass
+
+
 # --- MAIN APPLICATION THREAD ---
 print("[Main] Main execution path active.")
 while True:
     # 1. Listen for incoming UART serial packets from the WROOM board
     while uart_device.any():
-        command = uart_device.read()
+        command = uart_device.read_as_command()
-        print(f"[Main] Received command from WiFi Board: {command}")
+        if command:
-        
+            print(f"[Main] Received command from WiFi Board: {command.command_type}")
+            if command.command_type == UARTCommandType.COOKING_PARAMS:
+                # Handle cooking parameters command
+                params = command.payload
+                print(f"[Main] Cooking parameters received: {params}")
+                cooking_state = cookingState.CookingState(
+                    cook_time=params["cook_time"],
+                    power_level=params["power_level"],
+                    target_temp=params["target_temp"]
+                )
+                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)
+                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}")
+
     # uart_device.send(f"Hello from esp-32 lora ID {DEVICE_ID}") 
 
-    # 2. Send local metrics over the wire to the WiFi board every few seconds
+    # Cooking State Update
-    # uart_device.send("Data Pack: LoRa Link RSSI -72dBm")
+    if cooking_state:
+        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)

micro_ondes/esp_wifi/boot.py

@@ -1,5 +1,6 @@
 # This file is executed on every boot (including wake-boot from deepsleep)
 import esp
+from machine import Pin
 esp.osdebug(True)
 #import webrepl
 #webrepl.start()
@@ -17,3 +18,7 @@ def do_connect(ssid, pwd):
 
 # Attempt to connect to WiFi network
 do_connect("Smartwave-1", 'Smartwave-prot-1')
+
+# Set PIN 27 as GND for the temperature sensor (MLX90614)
+sensor_gnd = Pin(27, Pin.OUT)
+sensor_gnd.value(0)

micro_ondes/esp_wifi/main.py

@@ -2,7 +2,10 @@ import _thread
 import select
 from machine import Pin, I2C
 from sensors import temperature_sensor
-from shared import get_mqtt_client, get_uart, config, payloads
+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
@@ -22,7 +25,10 @@ try:
         DEVICE_ID = f.read().strip()
 except Exception:
     DEVICE_ID = "ESP32_Inconnu"
-    
+
+# --- Cooking State ---
+cooking_state = None  # This will hold the current cooking state if any
+
 # --- MQTT SETUP ---
 MQTT_CA_FILE = "/certs/ca.crt"
 
@@ -59,16 +65,25 @@ def on_mqtt_message(message):
     # Handle cooking messages
     elif message['topic'] == config.MQTT_TOPIC_COOKING and payload_data and payload_data["id_microwave"] == DEVICE_ID:
         # Cooking sensors init request
-        if not "cook_time_seconds" in payload_data:
+        if not "cook_time" in payload_data:
             print("[MQTT Thread] Cooking sensors init received from the orchestrator")
-            obj_temp = temperature_sensor.read_object_temp()
+            obj_temp = mlx_temperature_sensor.read_object_temp()
-            amb_temp = temperature_sensor.read_ambient_temp()
+            amb_temp = mlx_temperature_sensor.read_ambient_temp()
             queue_publish(config.MQTT_TOPIC_SENSOR, payloads.mqtt_sensor_data(DEVICE_ID, obj_temp, amb_temp))
         # Received cooking parameters from the orchestrator
         else:
             print("[MQTT Thread] Cooking parameters received from the orchestrator:", payload_data)
-            # Here you would handle the cooking parameters, e.g., start a cooking process
+            global cooking_state
-            # For now, we just print them
+            cooking_state = cookingState.CookingState(
+                cook_time=payload_data["cook_time"],
+                power_level=payload_data["power_level"],
+                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
+            # 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.")
 
@@ -135,39 +150,47 @@ def mqtt_background_thread():
                 pass
             time.sleep(5)
 
-# --- UART BACKGROUND THREAD ---  
+# UART
-def uart_background_thread():
+uart_device = get_uart(uart_id=2, tx_pin=17, rx_pin=16)
-    """Background UART worker handling all serial operations safely."""
-    print("[Thread] Background UART worker started.")
-    
-    uart_device = get_uart(uart_id=2, tx_pin=17, rx_pin=16)
-    
-    while True:
-        try:
-            # 1. Check for incoming messages from the Heltec board
-            while uart_device.any():
-                incoming_msg = uart_device.read()
-                print(f"[Thread] Received from esp-lora over UART: {incoming_msg}")
-                
-            # 2. Example: Send data to the Heltec board every 5 seconds
-            # uart_device.send("Status Check: WiFi Active")
-            
-            time.sleep(5) # Fast responsive polling loop for local UART
-            
-        except Exception as e:
-            print("[Thread] UART error encountered:", e)
-            time.sleep(5)
-
-# --- Launch background worker ---
-_thread.start_new_thread(mqtt_background_thread, ())
-_thread.start_new_thread(uart_background_thread, ())
 
+# Cooking Cycle
+cooking_state = None
+def on_received_cooking_state_update(new_state):
+    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.")
-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)
 
 # 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)
@@ -178,7 +201,13 @@ if 0x5A in devices:
     print("MLX90614 found at address 0x5A!")
 else:
     print("MLX90614 not found. Please check your wiring.")
-temperature_sensor = temperature_sensor.MLX90614(temperature_sensor_i2c)
+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
@@ -187,6 +216,23 @@ while True:
         queue_publish(config.MQTT_TOPIC_HELLO, payloads.mqtt_hello(DEVICE_ID))
         mqtt_hello_sent_timestamp = time.time()
         pass
+    
+    # 1. Listen for incoming UART serial packets from the WROOM board
+    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")

orchestrateur/main.py

@@ -142,7 +142,7 @@ def read_sensors_for_cooking(microwave_id):
     log(f"\nLecture du capteur Ultrason : {sensor_data['ultrasonic_distance']}")
 
     # Read Temperature and Humidity
-    temperature, humidity = temp_hum.get_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
@@ -170,22 +170,20 @@ def _stop_hardware(microwave_id: str):
     """
     Hardware driver stop — halts magnetron/turntable immediately.
     """
-    log(f"[{microwave_id}] 🛑 Emergency stop issued to hardware.")
+    print(f"[{microwave_id}] 🛑 Emergency stop issued to hardware.")
     # TODO: Add physical hardware stop command here
     # e.g., gpio_controller.stop()
 
 
-def _send_params_to_microwave(microwave_id: str, cook_time_seconds: int, power_level_pct: int, target_temp: float, cancel_event: threading.Event):
+def _send_params_to_microwave(microwave_id: str, cook_time: int, power_level: int, target_temp: float, cancel_event: threading.Event):
     """
     Triggers physical microwave execution.
     """
     if cancel_event.is_set():
         return
 
-    log(f"[{microwave_id}] ⚡ Starting microwave cooking : {cook_time_seconds}s @ {power_level_pct}W power, target temp {target_temp}°C.")
+    print(f"[{microwave_id}] Sending microwave {microwave_id} cooking parameters : {cook_time}s @ {power_level}W power, target temp {target_temp}°C.")
-    # TODO: Connect to microwave hardware driver here
+    mqtt_client.publish(config.MQTT_TOPIC_COOKING, payloads.mqtt_cooking_config(microwave_id, cook_time, power_level, target_temp), qos=config.MQTT_QOS)
-    # e.g., gpio_controller.start(time=cook_time_seconds, power=power_level_pct)
-
 
 def _cooking_worker(microwave_id: str, sensors_data: dict, cancel_event: threading.Event):
     """Worker function executing cloud API calls and hardware triggers."""
@@ -211,9 +209,9 @@ def _cooking_worker(microwave_id: str, sensors_data: dict, cancel_event: threadi
             print(f"[{microwave_id}] Job was canceled while waiting for cloud response. Discarding result.")
             return
 
-        if (response.status_code != 200):
+        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()}")
-            return
         response.raise_for_status()
         
         # 2. Extract Response Parameters

orchestrateur/sensors/temp_hum.py

@@ -1,5 +1,6 @@
 import grovepi
 import math
+import time
 from sensors.lock import grove_lock
 
 # Connect the Grove Temperature & Humidity Sensor Pro to digital port D3
@@ -20,3 +21,11 @@ def get_temperature_and_humidity():
         else:
             print("Error reading from DHT sensor")
             return None, None
+
+def get_temperature_and_humidity_with_retry(max_retries=3):
+    for _ in range(max_retries):  # Try up to max_retries times
+        temp, humidity = get_temperature_and_humidity()
+        if temp is not None and humidity is not None:
+            return temp, humidity
+        time.sleep(1)  # Wait a bit before retrying
+    return None, None

shared/__init__.py

@@ -5,7 +5,10 @@ import shared.deviceTypes as deviceTypes
 import shared.config as config
 import shared.payloads as payloads
 import shared.cookingState as cookingState
-import shared.uart_comm as uart_comm
+try:
+    import shared.uart_comm as uart_comm
+except ImportError:
+    pass  # No need as we are on the RPI
 import shared.sensors
 
 def get_lora(*args, **kwargs):

shared/cookingState.py

@@ -0,0 +1,199 @@
+import time
+
+
+class CookingState:
+    TEMPERATURE_TOLERANCE = 1.0
+
+    def __init__(self, cook_time: int, power_level: int, target_temp: float, temperature_provider=None, on_state_change=None, on_refresh=None):
+        self.cook_time = cook_time
+        self.power_level = power_level
+        self.target_temp = target_temp
+
+        self.start_time = time.time()
+        self.temperature_provider = temperature_provider
+        self.on_state_change = on_state_change
+        self.on_refresh = on_refresh
+
+        self.state = CookingStates.COOKING
+        self.paused = False
+        self._pause_started_at = None
+        self._paused_duration = 0.0
+
+        self.current_dish_temp = None
+        self.current_ambient_temp = None
+        self.estimated_remaining_time = float(cook_time)
+        self._last_temperature_sample = None
+        self._last_refresh_signature = None
+
+    def set_temperature_provider(self, temperature_provider):
+        self.temperature_provider = temperature_provider
+
+    def set_state_change_callback(self, callback):
+        self.on_state_change = callback
+
+    def set_refresh_callback(self, callback):
+        self.on_refresh = callback
+
+    def pause(self):
+        if self.paused:
+            return
+
+        self.paused = True
+        self._pause_started_at = time.time()
+        self._notify_refresh(force=True)
+
+    def unpause(self):
+        if not self.paused:
+            return
+
+        now = time.time()
+        if self._pause_started_at is not None:
+            self._paused_duration += now - self._pause_started_at
+
+        self._pause_started_at = None
+        self.paused = False
+        self._notify_refresh(force=True)
+
+    def toggle_pause(self):
+        if self.paused:
+            self.unpause()
+        else:
+            self.pause()
+
+    def set_state(self, state):
+        if self.state == state:
+            return
+
+        self.state = state
+        self._notify_state_change()
+        self._notify_refresh(force=True)
+
+    def get_elapsed_time(self) -> float:
+        now = time.time()
+        elapsed = now - self.start_time - self._paused_duration
+
+        if self.paused and self._pause_started_at is not None:
+            elapsed -= now - self._pause_started_at
+
+        return max(0.0, elapsed)
+
+    def get_remaining_time(self) -> int:
+        """Returns the estimated remaining cooking time in seconds."""
+        return int(max(0.0, self.get_remaining_time_estimation()))
+
+    def get_remaining_time_estimation(self) -> float:
+        elapsed_time = self.get_elapsed_time()
+        timer_remaining = max(0.0, float(self.cook_time) - elapsed_time)
+
+        if self.current_dish_temp is None:
+            return timer_remaining
+
+        if self.current_dish_temp >= self.target_temp:
+            return timer_remaining
+
+        heating_rate = self._estimate_heating_rate()
+        if heating_rate <= 0:
+            return timer_remaining
+
+        target_remaining = (self.target_temp - self.current_dish_temp) / heating_rate
+        return max(timer_remaining, max(0.0, target_remaining))
+
+    def _read_temperatures(self):
+        if self.temperature_provider is None:
+            return None, None
+
+        temperatures = self.temperature_provider()
+        if temperatures is None:
+            return None, None
+
+        if isinstance(temperatures, (list, tuple)) and len(temperatures) >= 2:
+            return temperatures[0], temperatures[1]
+
+        raise ValueError("temperature_provider must return a pair: (dish_temp, ambient_temp)")
+
+    def _estimate_heating_rate(self):
+        if self._last_temperature_sample is None:
+            return 0.0
+
+        last_time, last_temp = self._last_temperature_sample
+        now = time.time()
+        current_temp = self.current_dish_temp
+
+        if current_temp is None:
+            return 0.0
+
+        delta_time = now - last_time
+        if delta_time <= 0:
+            return 0.0
+
+        return (current_temp - last_temp) / delta_time
+
+    def _notify_state_change(self):
+        if self.on_state_change is None:
+            return
+
+        self.on_state_change(self)
+
+    def _notify_refresh(self, force=False):
+        if self.on_refresh is None:
+            return
+
+        signature = (
+            int(self.get_elapsed_time()),
+            int(self.get_remaining_time_estimation()),
+            self.current_dish_temp,
+            self.current_ambient_temp,
+            self.state,
+            self.paused,
+        )
+
+        if not force and signature == self._last_refresh_signature:
+            return
+
+        self._last_refresh_signature = signature
+        self.on_refresh(self)
+
+    def update_tick(self):
+        if self.paused:
+            self._notify_refresh()
+            return self.state
+
+        previous_state = self.state
+        previous_temperature = self.current_dish_temp
+
+        try:
+            self.current_dish_temp, self.current_ambient_temp = self._read_temperatures()
+        except Exception:
+            self.current_dish_temp = previous_temperature
+
+        now = time.time()
+        elapsed_time = self.get_elapsed_time()
+        self.estimated_remaining_time = self.get_remaining_time_estimation()
+
+        if self.current_dish_temp is not None:
+            if elapsed_time < (self.cook_time / 2.0) and self.current_dish_temp >= self.target_temp:
+                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):
+                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()
+
+            self._last_temperature_sample = (now, self.current_dish_temp)
+
+        if self.state != previous_state:
+            self._notify_state_change()
+
+        self._notify_refresh()
+        return self.state
+
+
+class CookingStates:
+    COOKING = 0
+    STIRRING_REQUIRED = 1
+    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

shared/payloads.py

@@ -35,4 +35,12 @@ def mqtt_sensor_data(id_microwave, dish_temp, ambient_temp):
         "id_microwave": id_microwave,
         "dish_temp": dish_temp,
         "ambient_temp": ambient_temp
+    })
+    
+def mqtt_cooking_config(id_microwave, cook_time, power_level, target_temp):
+    return as_json({
+        "id_microwave": id_microwave,
+        "cook_time": cook_time,
+        "power_level": power_level,
+        "target_temp": target_temp
     })

shared/sensors/__init__.py

@@ -1 +1,4 @@
-from shared.sensors.rgb_led import RGBLED
+try:
+    from shared.sensors.rgb_led import RGBLED
+except ImportError:
+    pass  # No need as we are on the RPI

shared/sensors/rgb_led.py

@@ -1,27 +1,30 @@
-from machine import Pin, PWM
+from machine import Pin, PWM, Timer
+import time
 
 class RGBLED:
     """
     MicroPython driver for 4-pin RGB LEDs on ESP32 / Heltec boards.
-    Supports state tracking, color setting, brightness scaling, and state toggling.
+    Supports state tracking, color setting, brightness scaling, 
+    state toggling, and non-blocking blinking via machine.Timer.
     """
 
-    # Preset RGB tuples for quick use
     RED = (255, 0, 0)
     GREEN = (0, 255, 0)
     BLUE = (0, 0, 255)
-    YELLOW = (255, 150, 0)
+    YELLOW = (255, 120, 0)
+    WHITE_YELLOW = (150, 30, 0)
     ORANGE = (255, 50, 0)
     WHITE = (255, 255, 255)
     OFF = (0, 0, 0)
 
-    def __init__(self, red_pin, green_pin, blue_pin, common_anode=False, freq=1000):
+    def __init__(self, red_pin, green_pin, blue_pin, common_anode=False, freq=1000, timer_id=1):
         """
         :param red_pin: GPIO pin number for Red channel
         :param green_pin: GPIO pin number for Green channel
         :param blue_pin: GPIO pin number for Blue channel
         :param common_anode: Set True if cathode is connected to 3.3V instead of GND
         :param freq: PWM frequency in Hz (default 1000Hz)
+        :param timer_id: Hardware/software timer ID for non-blocking blinks (-1 uses soft timers on ESP32).
         """
         self._r_pwm = PWM(Pin(red_pin, Pin.OUT), freq=freq)
         self._g_pwm = PWM(Pin(green_pin, Pin.OUT), freq=freq)
@@ -34,6 +37,10 @@ class RGBLED:
         self._brightness = 1.0         # Brightness factor [0.0 to 1.0]
         self._is_on = True            # Master power state
         
+        # Blink state variables
+        self._timer = Timer(timer_id)
+        self._is_blinking = False
+        
         self._apply()
 
     def _apply(self):
@@ -88,7 +95,11 @@ class RGBLED:
         """Returns True if the LED is currently powered on."""
         return self._is_on
 
-    # --- Helper Methods ---
+    @property
+    def is_blinking(self):
+        return self._is_blinking
+
+    # --- Basic Control Methods ---
 
     def set_rgb(self, r, g, b):
         """Alternative setter for individual R, G, B integer values."""
@@ -109,8 +120,40 @@ class RGBLED:
         self._is_on = not self._is_on
         self._apply()
 
+    # --- Non-Blocking Blinking Methods ---
+
+    def _timer_callback(self, t):
+        """Internal callback executed by machine.Timer."""
+        self.toggle()
+
+    def blink_on(self, interval_ms=500):
+        """Starts background blinking at the specified interval in milliseconds."""
+        if self._is_blinking:
+            self._timer.deinit()
+
+        self._is_blinking = True
+        self.on()  # Ensure initial state is on
+        self._timer.init(
+            period=interval_ms,
+            mode=Timer.PERIODIC,
+            callback=self._timer_callback
+        )
+
+    def blink_off(self):
+        """Stops blinking and returns control to steady state."""
+        if self._is_blinking:
+            self._timer.deinit()
+            self._is_blinking = False
+
+    def blink_toggle(self, interval_ms=500):
+        """Toggles blinking state (starts if stopped, stops if active)."""
+        if self._is_blinking:
+            self.blink_off()
+        else:
+            self.blink_on(interval_ms)
+
     def deinit(self):
-        """Releases the hardware PWM pins when finished."""
+        """Releases the hardware PWM pins and timer when finished."""
         self._r_pwm.deinit()
         self._g_pwm.deinit()
         self._b_pwm.deinit()

shared/uart_comm.py

@@ -1,12 +1,12 @@
-# shared/uart_comm.py
 import _thread
 from machine import UART
 import time
+import ujson
 
 class SafeUART:
     def __init__(self, uart_id, tx_pin, rx_pin, baudrate=115200):
         # Initialize the hardware UART channel
-        self.uart = UART(uart_id, baudrate=baudrate, tx=tx_pin, rx=rx_pin, timeout=10)
+        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()
@@ -21,37 +21,87 @@ class SafeUART:
         print(f"[UART] Thread initialized on UART{uart_id} (TX:{tx_pin}, RX:{rx_pin})")
 
     def _listener_worker(self):
-        """Asynchronous internal loop parsing incoming stream lines into the queue."""
+        """Worker loop that handles nested JSON structures by tracking brace depth."""
         while True:
-            try:
+            messages_found = []
+            
+            with self.lock:
                 if self.uart.any():
-                    with self.lock:
+                    chunk = self.uart.read()
-                        # Pull all raw bytes waiting in the hardware ring buffer
+                    if chunk is not None and isinstance(chunk, bytes):
-                        chunk = self.uart.read(self.uart.any())
+                        self.buffer += chunk
-                        if chunk:
-                            self.buffer += chunk
-                        
-                        # Process complete lines terminated by a newline character
-                        while b'\n' in self.buffer:
-                            line, self.buffer = self.buffer.split(b'\n', 1)
-                            try:
-                                decoded_line = line.decode('utf-8').strip()
-                                if decoded_line:
-                                    self.rx_queue.append(decoded_line)
-                            except Exception:
-                                pass # Discard corrupt data frames safely
-            except Exception as e:
-                print("[UART Thread Error]:", e)
                 
-            time.sleep_ms(20) # Give other background threads breathing room
+                # 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)
+                except Exception as e:
+                    print(f"[UART Parse Error]: {e}")
+                    
+            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(message.encode('utf-8'))
+            self.uart.write(data)
+            
+    def send_as_command(self, command: 'UARTCommand'):
+        """Safely sends a structured command over UART."""
+        json_message = command.to_json()
+        self.send(json_message)
 
     def any(self):
         """Checks if any complete messages are waiting to be read."""
@@ -63,4 +113,51 @@ class SafeUART:
         with self.lock:
             if self.rx_queue:
                 return self.rx_queue.pop(0)
-        return None
+        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()
+        if raw_message is not None:
+            cmd = UARTCommand.from_json(raw_message)
+            if cmd is None:
+                print("[UART] Impossible de traiter le message brut :", raw_message)
+            return cmd
+        return None
+
+
+class UARTCommand:
+    """A simple wrapper for commands sent over UART, allowing for structured data."""
+    def __init__(self, command_type: str, payload):
+        self.command_type = command_type
+        self.payload = payload
+
+    def to_json(self):
+        """Serializes the command to a JSON string."""
+        return ujson.dumps({
+            "command_type": self.command_type,
+            "payload": self.payload
+        })
+        
+    @staticmethod
+    def from_json(json_string: str) -> 'UARTCommand | None':
+        """Deserializes a JSON string into a UARTCommand object."""
+        try:
+            # Remplacement préventif si des guillemets simples sont reçus
+            clean_str = json_string.replace("'", '"') if "'" in json_string else json_string
+            data = ujson.loads(clean_str)
+            
+            if not isinstance(data, dict):
+                return None
+                
+            return UARTCommand(data.get("command_type"), data.get("payload"))
+        except Exception as err:
+            # Affiche l'erreur exacte rencontrée par ujson (ex: syntax error)
+            print(f"[UARTCommand Parsing Error]: {err} -> Contenu: {json_string}")
+            return None
+
+
+class UARTCommandType:
+    """Enumeration of known UART command types."""
+    COOKING_PARAMS = "COOKING_PARAMS"
+    COOKING_STATE_UPDATE = "COOKING_STATE_UPDATE"