Altruist Firmware R_2026-05.01 — Bugfix & sensor support

R_2026-05.01 — Sensor stability & improvements

This release focuses on improving sensor stability during startup, fixing SDS011 data handling, and making telemetry more consistent across Urban and Insight devices.

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🐛 Fixes

• SDS011 runtime recovery
  Added recovery logic for stuck or empty measurement cycles without reboot:

  • UART buffer cleanup
  • Serial reinitialization
  • parser state reset
  • measurement cycle restart

• Urban SDS cache cleanup (Insight)
  Fixed stale PM values (SDS_P1 / SDS_P2) persisting in Insight when Urban stops sending them.

• Telemetry payload safety
  Improved thread-safe JSON snapshotting under mutex and added diagnostics for sensor JSON overflow/missing fields.

• Robonomics datalog key normalization (CO / CO2)
  Fixed incorrect key mapping in datalog payloads for gas measurements.

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✨ Improvements

ZMOD4510 sensor startup stability (Urban)

• Reduced read_sensor_info timeout from 200s → 10s
• Prevents long blocking boot when sensor is busy or not responding

💡 Urban LED states

Simplified and clarified device status indication:

• green: normal operation

• blue: configuration / active datalog sending

• short green/red (3s): datalog result

• red: sustained Wi-Fi/API errors

  🔎 Changelog

v_R_2026-05 → v_R_2026-05.01