BLE Network Overview
Introduction
The Hubble Bluetooth® Low Energy (BLE) Network is a framework designed to provide secure and efficient communication within a Bluetooth Low Energy (BLE) environment. Advanced encryption techniques and Bluetooth technology protect data integrity and privacy across distributed systems. The Hubble BLE API, defined in the hubble/ble.h header file, provides a comprehensive set of functions for initializing, configuring, and managing network operations.
Key Features
Secure Communication
The Hubble BLE Network uses a 256-bit encryption key to safeguard all transmitted data, minimizing the risk of unauthorized access and data breaches. See BLE Security Overview
Time Synchronization
Functions are available to initialize the network with the current time and update it as needed. This ensures that all nodes remain synchronized, which facilitates coordinated operations and data consistency.
Advertisement Management
The Hubble BLE API processes input data to generate Bluetooth advertisements. These advertisements are essential for device discovery and communication within the BLE network. The API returns platform-specific pointers to the generated advertisements, allowing for seamless integration with various hardware and software platforms.
API Overview
Initialization
Initialize the network with the current UTC time before calling other Hubble
BLE API functions. The hubble_init function sets up the required
configurations and prepares the network for operation:
int hubble_init(uint64_t utc_time, const void *key);
Time Management
The API provides functions to set and update the UTC time (seconds since the Unix epoch). The hubble_utc_set function enables precise time synchronization throughout the network:
int hubble_utc_set(uint64_t utc_time);
Encryption Key Management
An encryption key secures all network communication. The hubble_key_set function configures this key for ongoing network operations:
int hubble_key_set(const void *key);
Advertisement Retrieval
The hubble_ble_advertise_get function processes input data to create Bluetooth advertisements, a critical step in enabling device discovery and interaction within the network:
int hubble_ble_advertise_get(const uint8_t *input, size_t len, uint8_t *output, size_t* out_len);