[TST] Test Communication Stability (BT/Wi-Fi)

[Hisham4Ahmed]

📌 Summary

We need to validate the reliability and stability of communication between the Smart Energy Meter and external devices over Bluetooth and (if available) Wi-Fi .

The goal is to ensure that data transfer (measurements, logs, commands) works consistently under different conditions.

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🎯 Goal / Deliverable

• Verify stable UART-Bluetooth communication with the mobile app.
• Test packet delivery, ordering, and latency.
• Check resilience under continuous data streaming (real-time monitoring).
• Validate reconnection after disconnection or interference.
• If Wi-Fi is enabled in system extension → ensure same stability tests apply.

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🛠️ Steps to Implement

1. Connect device to Mobile App via Bluetooth.
2. Perform different tests:
   • Short bursts : Send single-frame commands and responses.
   • Continuous stream : Send measurement updates at fixed interval (e.g., every 1s).
   • Stress test : High-frequency updates (50–100ms).
   • Interference : Disconnect Bluetooth and reconnect.
3. If Wi-Fi module is integrated, repeat the same tests over Wi-Fi.
4. Measure:
   • Packet loss rate .
   • Average latency .
   • Reconnection time .

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✅ Acceptance Criteria

• No packet loss in normal update rate (1s interval).
• ≤5% packet loss under stress test .
• Average latency ≤200 ms (BT), ≤100 ms (Wi-Fi).
• System recovers gracefully after disconnection without manual reset.

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📐 Definition of Done (DoD)

• Communication tested for both Bluetooth and Wi-Fi (if present).
• Logs collected with packet counters to verify loss rate.
• Reconnection scenarios validated.
• Test results documented under /docs/testing/phase5/.