Fix global

micro_ondes/esp_lora/main.py

@@ -205,7 +205,7 @@ def cooking_state_temperature_provider():
     return (0.0, 0.0)
 
 def cooking_state_on_state_change(state):
-    global cooking_start_time
+    global cooking_start_time, uart_device
     print(f"[CookingState] State changed to: {state.state}")
     
     if state.paused or state.state in (cookingState.CookingStates.DONE, cookingState.CookingStates.IDLE, cookingState.CookingStates.ALERT):
@@ -214,7 +214,7 @@ def cooking_state_on_state_change(state):
         magnetron_led.on()
     
     # Send state updates to WiFi board and Orchestrator
-    if uart_device:
+    if uart_device != None:
         uart_device.send_as_command(UARTCommand(UARTCommandType.COOKING_STATE_UPDATE, {"state": state.state}))
     
     # Send LoRa update with start time and remaining time if beginning cooking process
@@ -347,6 +347,8 @@ async def lora_process_task():
                             alert.timestamp = data.get("timestamp", time.time())
                             alert_manager.add_alert(alert)
                             microwave_state = MicrowaveState.ALERT
+                            if cooking_state is not None:
+                                cooking_state.set_state(cookingState.CookingStates.ALERT)
 
                     elif action == LoraCommands.MICROVAVE_STATE_UPDATE:
                         new_state = data.get("new_microwave_state")
@@ -356,7 +358,8 @@ async def lora_process_task():
                             if new_state not in (MicrowaveState.ALERT): # Not alert so we can show the error
                                 update_screen()
                             if new_state == MicrowaveState.IDLE:
-                                cooking_state = None
+                                if cooking_state is not None:
+                                    cooking_state.set_state(cookingState.CookingStates.IDLE)
                                 await asyncio.sleep_ms(20)
                             
         await asyncio.sleep_ms(100)

orchestrateur/main.py

@@ -113,7 +113,7 @@ def on_microwave_change(state: MicrowaveState, field: MicrowaveStateFields):
         if state.cooking_state in (CookingStates.DONE, CookingStates.STIRRING_REQUIRED, CookingStates.ALERT):
             # Trigger buzzer for user attention
             beats = 5 if state.cooking_state == CookingStates.ALERT else (1 if state.cooking_state == CookingStates.STIRRING_REQUIRED else 3)
-            buzzer.buzzer_siren(beatsNb=beats)
+            buzzer.buzzer_siren(beats_nb=beats)
         elif state.cooking_state == CookingStates.DONE and state.state == MicrowaveState.COOKING:
             state.set_state(MicrowaveState.DONE)
             print(f"[{state.microwave_id}] Cooking finished. Waiting for user to remove dish.")
@@ -275,17 +275,17 @@ async def rfid_listener_task():
                     TECHNICIAN_MODE = True
                     print(f"[RFID] Card {tag_id} VALIDATED! -> TECHNICIAN_MODE = TRUE")
                     # Optional: Sound positive feedback beep
-                    buzzer.buzzer_siren(beatsNb=1)
+                    buzzer.buzzer_siren(beats_nb=2)
                 else:
                     print(f"[RFID] Card {tag_id} REJECTED / Invalid.")
                     # Optional: Sound error feedback beep
-                    buzzer.buzzer_siren(beatsNb=2)
+                    buzzer.buzzer_siren(beats_nb=4)
 
         except Exception as e:
             print(f"[RFID Task] Error reading RFID tag: {e}")
 
         # Sleep 100ms between checks to keep CPU usage near zero
-        await asyncio.sleep(0.1)
+        await asyncio.sleep(0.2)
 
 async def display_broadcast_worker_task():
     """

orchestrateur/sensors/buzzer.py

@@ -1,33 +1,45 @@
 import time
+import threading
 import grovepi
 from sensors.lock import grove_lock
 from shared import config
 
-# Pin definition
+BUZZER_PIN = 8  # Must be a PWM pin on GrovePi (D3, D5, D6, D8 support analogWrite)
-BUZZER_PIN = 8
 
-grovepi.pinMode(BUZZER_PIN, "OUTPUT")
+# Initialize pin mode
-buzzer_state = 0
+try:
+    with grove_lock:
+        grovepi.pinMode(BUZZER_PIN, "OUTPUT")
+except Exception as e:
+    print(f"[BUZZER] Init error: {e}")
 
-def set_buzzer(state: int):
+def _siren_worker(beats_nb: int, delay: float):
-    global buzzer_state
-    buzzer_state = state
     if not config.BUZZER_ACTIVATED:
         return
-    try:
+
     with grove_lock:
-            grovepi.digitalWrite(BUZZER_PIN, state)
+        try:
+            for _ in range(beats_nb):
+                # 1. Send single PWM write to start sound (Duty cycle ~128/255)
+                grovepi.analogWrite(BUZZER_PIN, 128)
+                time.sleep(delay)
+                
+                # 2. Send single PWM write to kill sound
+                grovepi.analogWrite(BUZZER_PIN, 0)
+                time.sleep(delay)
         except Exception as e:
-        print(f"[BUZZER] Error occurred while setting buzzer state: {e}")   
+            print(f"[BUZZER] Error during siren execution: {e}")
+        finally:
+            # Absolute safety reset
+            try:
+                grovepi.analogWrite(BUZZER_PIN, 0)
+                grovepi.digitalWrite(BUZZER_PIN, 0)
+            except Exception:
+                pass
 
-def buzzer_toggle():
+def buzzer_siren(beats_nb: int = 3, delay: float = 0.2, async_run: bool = True):
-    global buzzer_state
+    if async_run:
-    new_state = 1 - buzzer_state
+        thread = threading.Thread(target=_siren_worker, args=(beats_nb, delay), daemon=True)
-    set_buzzer(new_state)
+        thread.start()
-    
+    else:
-def buzzer_siren(beatsNb: int = 3, delay: float = 0.3):
+        _siren_worker(beats_nb, delay)
-    for _ in range(beatsNb):
-        set_buzzer(1)
-        time.sleep(delay)
-        set_buzzer(0)
-        time.sleep(delay)

orchestrateur/sensors/camera.py

@@ -1,6 +1,3 @@
-import grovepi
-import math
-from sensors.lock import grove_lock
 from picamera2 import Picamera2, Preview
 import time