v3.1 Stable

This release consolidates the major ATClient hardening work since v2.3 and focuses on stability, operational robustness, and improved diagnostics for reliable 24/7 operation.

Highlights

• significantly hardened AT/STK handling and serial communication paths
• more robust startup and readiness checks for modem, network registration, and radio state
• proactive radio self-recovery before watchdog fallback:
  • enhanced post-STK254 radio checks and recovery
  • additional heartbeat-based idle radio checks
  • automatic network reselection when degraded idle radio state is detected
• improved error handling and recovery behavior for modem/terminal failures
• enhanced operator-facing logging for modem identity, service set, registration, RAT, signal, and radio quality
• improved watchdog support, including configurable STK activity event filtering
• reduced boot-time warning noise around STK037 handling
• switched from AT+CNUM to AT+CIMI, as CNUM proved unreliable in the field
• removed the obsolete text SMS forwarding feature
• dependency and security updates, especially for Log4j
• expanded documentation for setup, operations, watchdog behavior, logging, and troubleshooting

Full Changelog: 2.3...v3.1

v2.3 Stable

refactored

v2.2 - Stable

Refactored

v2.1

Fixed

v2.0

Fixed

v1.1

Fixed