add configuration system for ESP Sensors project

examples/dht22_example.py

@@ -2,104 +2,112 @@
 Example script for using the DHT22 sensor with an ESP32.
 
 This script demonstrates how to initialize and read from a DHT22 sensor
-connected to an ESP32 microcontroller.
+connected to an ESP32 microcontroller using the configuration system.
 
 Usage:
     - Upload this script to your ESP32 running MicroPython
-    - Connect the DHT22 sensor to the specified GPIO pin
+    - Ensure config.json is properly set up with DHT22 sensor configuration
     - The script will read temperature and humidity at the specified interval
 """
 import time
 import sys
+import os
+
+# Add the src directory to the Python path if needed
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
 
 # Check if running on MicroPython
 if sys.implementation.name == 'micropython':
     from src.esp_sensors.dht22 import DHT22Sensor
-    
-    # Configuration
-    SENSOR_NAME = "living_room"
-    SENSOR_PIN = 4  # GPIO pin where DHT22 is connected
-    READ_INTERVAL = 5  # seconds between readings
-    
+    from src.esp_sensors.config import load_config, get_sensor_config
+
     def main():
-        print(f"Initializing DHT22 sensor on pin {SENSOR_PIN}")
-        
-        # Initialize the sensor
-        sensor = DHT22Sensor(SENSOR_NAME, SENSOR_PIN, READ_INTERVAL)
-        
+        # Load configuration
+        config = load_config()
+        dht_config = get_sensor_config("dht22", config)
+
+        print(f"Initializing DHT22 sensor from configuration")
+        print(f"Sensor name: {dht_config.get('name')}")
+        print(f"Sensor pin: {dht_config.get('pin')}")
+
+        # Initialize the sensor using configuration
+        sensor = DHT22Sensor(config=config)
+
         print("Starting sensor readings. Press Ctrl+C to stop.")
-        
+
         try:
             while True:
                 # Read temperature
                 temperature = sensor.read()
                 # Read humidity
                 humidity = sensor.read_humidity()
-                
+
                 # Get the current timestamp
                 timestamp = time.time()
-                
+
                 # Print readings
                 print(f"Time: {timestamp}")
                 print(f"Temperature: {temperature}°C ({sensor.to_fahrenheit()}°F)")
                 print(f"Humidity: {humidity}%")
                 print("-" * 30)
-                
+
                 # Wait for the next reading
-                time.sleep(READ_INTERVAL)
-                
+                time.sleep(sensor.interval)
+
         except KeyboardInterrupt:
             print("Sensor readings stopped.")
         except Exception as e:
             print(f"Error: {e}")
-            
+
     if __name__ == "__main__":
         main()
 else:
     print("This script is designed to run on MicroPython on an ESP32.")
     print("Running in simulation mode for demonstration purposes.")
-    
+
     # Import for simulation mode
     from src.esp_sensors.dht22 import DHT22Sensor
-    
-    # Configuration
-    SENSOR_NAME = "simulation"
-    SENSOR_PIN = 4
-    READ_INTERVAL = 2  # shorter interval for demonstration
-    
+    from src.esp_sensors.config import load_config, get_sensor_config
+
     def main():
-        print(f"Initializing DHT22 sensor simulation")
-        
-        # Initialize the sensor
-        sensor = DHT22Sensor(SENSOR_NAME, SENSOR_PIN, READ_INTERVAL)
-        
+        # Load configuration
+        config = load_config()
+        dht_config = get_sensor_config("dht22", config)
+
+        print(f"Initializing DHT22 sensor simulation from configuration")
+        print(f"Sensor name: {dht_config.get('name')}")
+        print(f"Sensor pin: {dht_config.get('pin')}")
+
+        # Initialize the sensor using configuration
+        sensor = DHT22Sensor(config=config)
+
         print("Starting simulated sensor readings. Press Ctrl+C to stop.")
-        
+
         try:
             for _ in range(5):  # Just do 5 readings for the simulation
                 # Read temperature
                 temperature = sensor.read()
                 # Read humidity
                 humidity = sensor.read_humidity()
-                
+
                 # Get the current timestamp
                 timestamp = time.time()
-                
+
                 # Print readings
                 print(f"Time: {timestamp}")
                 print(f"Temperature: {temperature}°C ({sensor.to_fahrenheit()}°F)")
                 print(f"Humidity: {humidity}%")
                 print("-" * 30)
-                
+
                 # Wait for the next reading
-                time.sleep(READ_INTERVAL)
-                
+                time.sleep(sensor.interval)
+
             print("Simulation complete.")
-                
+
         except KeyboardInterrupt:
             print("Sensor readings stopped.")
         except Exception as e:
             print(f"Error: {e}")
-            
+
     if __name__ == "__main__":
-        main()
+        main()