Main application

The main weather station application utilizing Sensors library and AVR C++ utilities library. More...

Collaboration diagram for Main application:

Files
file	main.cpp
	The main weather station application utilizing Sensors library and AVR C++ utilities library.

Detailed Description

The main weather station application utilizing Sensors library and AVR C++ utilities library.

Setup:

• Receives temperature and humidity from a Hideki Thermo/Hygro sensor connected to the AVR's input capture pin (ICP).
• Receives temperature and humidity from a DHT22 sensor connected to the AVR's digital I/O pin PD2.
• Receives temperature and pressure from a Bosch BMP180 sensor connected to the AVR's I2C (TWI) interface.
• Receives ambient_temperature and object_temperature from a Melexis MLX90614 sensor connected to the AVR's I2C (TWI) interface.
• Receives sensor_resistance from a Figaro TGS 2600 sensor connected to the AVR's Analog to Digital Conversion pin 0 (ADC0).

The received sensor values are transmitted over the UART interface and / or over Ethernet using UDP messages as JSON object.

JSON Schema:

{
    "type": "object",
    "patternProperties": {
        "^rf433_[0-6]$": {
            "type": "object",
            "properties": {
                "temperature": {
                    "description":
                        "Temperature (in °C) from wireless sensor.",
                    "type": "number"
                },
                "humidity": {
                    "description": "Humidity (in %) from wireless sensor.",
                    "type": "integer",
                    "minimum": 0,
                    "maximum": 100
                },
                "battery": {
                    "description": "Battery status.",
                    "type": "boolean"
                }
            }
        }
    },
    "properties": {
        "dht22": {
            "type": "object",
            "properties": {
                "temperature": {
                    "description":
                        "Temperature (in °C) from DHT22 sensor.",
                    "type": "number"
                },
                "humidity": {
                    "description": "Humidity (in %) from DHT22 sensor.",
                    "type": "number",
                    "minimum": 0,
                    "maximum": 100
                }
            }
        },
        "bmp180": {
            "type": "object",
            "properties": {
                "temperature": {
                    "description":
                        "Temperature (in °C) from BMP180 sensor.",
                    "type": "number"
                },
                "pressure": {
                    "description":
                        "Barometric pressure (in hPa) from BMP180 sensor.",
                    "type": "number"
                }
            }
        },
        "mlx90614": {
            "type": "object",
            "properties": {
                "ambient_temperature": {
                    "description":
                        "Ambient temperature (in °C) from MLX90614 sensor.",
                    "type": "number"
                },
                "object_temperature": {
                    "description":
                        "Object temperature (in °C) from MLX90614 sensor.",
                    "type": "number"
                }
            }
        },
        "tgs2600": {
            "type": "object",
            "properties": {
                "sensor_resistance": {
                    "description":
                        "Sensor resistance in Ohm from TGS 2600 sensor.",
                    "type": "integer",
                    "minimum": 0
                }
            }
        }
    }
}

See also

Sensors::HidekiSensor

Avr::Dht22

Sensors::Tgs2600