SensoriaHandler.swift

Purpose

SensoriaHandler.swift provides Bluetooth connection management and data handling for Sensoria smart footwear sensors within the HealthyWear iOS system. It connects to Sensoria devices, receives real-time telemetry, buffers the data, and prepares it for storage or transmission.

Imports

import Foundation
import SensoriaiOS
import BoltsSwift

  • SensoriaiOS: SDK for managing smart textile devices like foot sensors.

  • BoltsSwift: For potential asynchronous task chaining (not actively used here).

  • Foundation: Standard Swift utilities.

Class: SensoriaHandler

Singleton

static let shared = SensoriaHandler()

Provides a globally accessible instance for device management.

Properties

  • sacores: Array of two SACore instances — each corresponds to one foot (left/right).

  • activeScanningCore: The currently scanning core.

  • dataBuffer: Array of formatted sensor strings awaiting upload.

  • maxBufferSize: Threshold after which the buffer is flushed.

  • bufferQueue: A DispatchQueue used for thread-safe buffer operations.

Initializer

override init()

  • Registers the handler as a delegate for both SACore instances.

  • Ensures real-time callbacks are routed to this class.

Method: startConnection(deviceIndex:)

func startConnection(deviceIndex: Int)

  • Starts scanning on the corresponding SACore (left or right).

  • Sets the activeScanningCore accordingly.

Method: didScan(_:)

Callback triggered when a device is detected.

  • Infers device side (“Right” or “Left”).

  • Registers metadata using DeviceRegistry.

  • Connects to the detected device.

Method: didUpdateData()

Callback when new data is received.

  • Constructs a formattedData string using all available sensor metrics.

  • Appends to dataBuffer inside a background queue.

  • Flushes the buffer via processAndClearBuffer() when full.

Method: formatData(from:footIndicator:)

Returns a comma-separated string of:

  • Pressure sensors (s0, s1, s2)

  • IMU: Accelerometer, Magnetometer, Gyroscope

  • Timestamp and foot indicator

return "\(core.s0),\(core.s1),...(core.timestamp),\(footIndicator)"

Method: processAndClearBuffer()

Clears the dataBuffer. Placeholder for future implementation of upload logic (likely to server or file system).

Method: didError(_)

Prints error messages for debugging or telemetry failure.