μMesh v1.4.0

Broader ESP target support release with capability detection and C6 TWT groundwork.

Added

• New compile-time target capability header: include/umesh_caps.h
• ESP32 target matrix for ESP32 / S2 / S3 / C3 / C6
• Unsupported target guards for ESP32-H2 and ESP32-C2
• Runtime capability API:
  • umesh_get_target()
  • umesh_get_wifi_gen()
  • umesh_target_supports(...)
• Extended umesh_info_t with target metadata (target, wifi_gen, tx_power_max)
• ESP32-C6 TWT stub (port/esp32/twt_esp32c6.c)
• New capability tests (tests/test_caps.c)
• New target info example (examples/target_info/)

Build/Config

• Target-aware CMake source selection for ESP32-C6 TWT stub
• UMESH_LOW_MEMORY compile option support
• Version bump to v1.4.0

Verification

• Full POSIX test matrix passes with power management ON and OFF.

μMesh v1.3.0

Power management release focused on lowering sensor-node idle consumption.

Added

• Compile-time power feature flag: UMESH_ENABLE_POWER_MANAGEMENT
• Runtime power profiles: ACTIVE, LIGHT, DEEP
• Power API (umesh_set_power_mode, umesh_get_power_mode, umesh_deep_sleep_cycle, statistics, current estimate)
• Coordinator POWER_BEACON command for sleep profile signaling
• ESP32 + POSIX power HAL implementations
• Deep sleep sensor example (examples/deep_sleep_sensor/)
• Power documentation (docs/POWER_MANAGEMENT.md)

Compatibility

• With -DUMESH_ENABLE_POWER_MANAGEMENT=OFF, power API remains available via no-op stubs.
• Test matrix verified for both PM enabled and disabled.

• fix split-brain convergence
• fix auto-router transition to connected
• fix route timestamp refresh (eliminates intermittent NOT_ROUTABLE)
• dashboard/status reliability updates for hardware testing

μMesh v1.2.0 introduces gradient routing for large many-to-one sensor deployments.

Highlights

• New routing mode: UMESH_ROUTING_GRADIENT
• New opcodes:
  • UMESH_CMD_GRADIENT_BEACON (0x59)
  • UMESH_CMD_GRADIENT_UPDATE (0x5A)
• Uphill forwarding toward coordinator using neighbor distance + RSSI
• Neighbor diagnostics API
• Gradient tests and examples

Included Assets

• umesh-v1.2.0-source.zip
• umesh-v1.2.0-hardware-firmware.zip
• umesh-v1.2.0-gradient-example.zip
• SHA256SUMS.txt

Recommended Use

Gradient mode is optimized for many sensors sending data to one coordinator (10–100+ nodes).

Verification

Use SHA256SUMS.txt to verify asset integrity.

μMesh v1.1.0 adds automatic coordinator election so nodes can run without fixed role configuration.

Highlights

• UMESH_ROLE_AUTO
• Election opcodes:
  • UMESH_CMD_ELECTION (0x57)
  • UMESH_CMD_ELECTION_RESULT (0x58)
• Coordinator failover and re-election
• Auto-mesh election test coverage
• Single auto firmware node image for hardware testing

Included Assets

• umesh-v1.1.0-source.zip
• umesh-v1.1.0-hardware-firmware.zip
• SHA256SUMS.txt

Notes

Backward compatibility for explicit roles is preserved.

Verification

Use SHA256SUMS.txt to verify asset integrity.

μMesh v1.0.0 is the first stable baseline release.

Highlights

• Distance-vector routing (default mode)
• Full protocol stack: PHY, MAC, Security, Network
• ESP32 + POSIX support
• Core tests and examples

Included Assets

• umesh-v1.0.0-source.zip
• SHA256SUMS.txt

Verification

Use SHA256SUMS.txt to verify asset integrity before flashing or integrating.