Class: TheThingsMessage #
The TheThingsMessage class provides structs for sensor and application data you can encode and decode as bytes.
#include <TheThingsMessage.h>
Type: devicedata_t #
Create a struct of this type using api_DeviceData_init_default as defaults.
devicedata_t data = api_DeviceData_init_default;
Then in your setup() function select what fields of the struct should be included when encoding it as bytes:
data.has_motion = true;
data.has_water = false;
data.has_temperature_celcius = true;
data.has_temperature_fahrenheit = true;
data.has_humidity = true;
In your loop() function read your sensors and set the fields of the struct:
data.motion = true;
data.water = 682;
data.temperature_celcius = 30
data.temperature_fahrenheit = 86;
data.humidity = 97;
Additional analog readings #
You can also add other analog readings.
TODO: Document how this works and include in example.
Method: encodeDeviceData #
Encode the message you want to send.
static void encodeDeviceData(devicedata_t *data, byte **buffer, size_t *size);
devicedata_t *data: Structure containing typical fields that devices send.byte **buffer: Bytes to send.size_t *size: The number of bytes to send.
Usage:
byte *buffer;
size_t size;
TheThingsMessage::encodeDeviceData(&data, &buffer, &size);
Method: decodeAppData #
Decode the message you received.
static bool decodeAppData(appdata_t *receiveData, const byte *payload, size_t length);
appdata_t *receiveData: Structure containing all the message we can interpret.const byte *payload: Bytes received.size_t *length: The number of bytes.
Usage:
const byte *payload;
size_t length;
TheThingsMessage::decodeAppData(&receiveData, payload, length);