Use compact scalar crypto, reviewed GNSS version parsing and shared CLI reply copies for RAK3401/RAK4631 repeaters. Preserve keys, protocols, commands and configured capacities.
Both Reduced images save 11,580 bytes. SWD measurements on the RAK3401 found scalar-only signing still near 50.9 ms and key exchange near 38 ms. Keep compact field arithmetic off: its extra 4.3 KiB saving adds about a quarter second and delays radio servicing.
Validate Full and Reduced production OTA packages on both boards, focused crypto/GPS/CLI tests, and linked ARM crypto outputs. Include the RAM benchmark harness and scoped results. No live RF packet-loss qualification is claimed.
Omit unbound forwarding-region callbacks only for exclusive Companion source roles. Reuse the compact neighbor sorter in repeaters for every RPC order and the CLI list, removing duplicate sort implementations while preserving storage and size gates.
Cache each validated OTA descriptor field once and size manifest reassembly to the admitted wire format. Compile reviewed read-only VL53L0X tuning data in flash through a private dependency copy, retaining the original implementation for unknown revisions.
Detect OLED or the original stock TFT touch assembly in ordinary V4.2/V4.3
images. Add saved live display.type auto/oled/tft/off selection and report
the active selection in board output. Keep sensors on primary I2C, preserve
shared power, and isolate TFT FSPI from radio HSPI through sleep and changes.
Consolidate future picker/build choices only with application capability
proof. Retain exact legacy OTA identities and separate R8 hardware images.
Document controls and physical qualification limits.
Validation: five serialized Full builds with capability/size/RAM checks;
focused host tests, existing R8/T-Deck/OLED regressions, build-profile suite,
and picker/provider tests. V4.3 OLED live changes and off/auto reboot
persistence passed on Mercerwood. Physical TFT qualification remains pending.
Resolve Serial macro and ESP-NOW wrapper compilation errors. Preserve queue, neighbor, advert-history and Room post capacities while using qualified RTC, PSRAM and word-only IRAM storage on constrained ESP32 targets. Reduce Full infrastructure flash through lossless Room web compression, compact crypto and unused exception metadata removal.
Add focused native regressions for storage ownership, exact protocol output, OTA proofs and build policy. Keep physical flash sizes, OTA slots and RAM guard formulas unchanged.
Share nRF52 checked-record reads and command-family lookups without changing
storage formats, error protection, fleet authorization, or delegated scopes.
Use the existing bounded Merkle proof workspace for qualified ESP32 repeaters
while retaining source capacity, wire format, and every enabled feature.
Restore advert tab/CRLF delimiters and expose nested qualification build logs.
Validation: all 1932 native CI test cases; exact canonical RAK4631 Full,
Wio-E5 Mini, Station G3 Full MQTT, and Wireless Tracker Full wrappers;
linked RAK crypto/workspace checks and retained Reader code equivalence;
focused persistence, authorization, source-proof, and RAM policy regressions.
Add get leds and set leds on|off for Companion, repeater, room server and
sensor builds. Preserve the setting across reboots and cover GPIO, RGB,
Bluetooth, notification and expander indicators without changing radio
amplifier controls or screen backlights.
RAK Companions blink while advertising and keep the Bluetooth LED off once
connected, including late timer callbacks.
Adapted from meshcore-dev/MeshCore#3605 and #2694.
Validated with host regressions and firmware builds for SenseCAP Solar,
RAK4631, T096, Heltec V4, T-Beam, Xiao S3, Pico W and Wio E5 Mini.
Co-authored-by: R0ck <develop@hectospark.co.uk>
Co-authored-by: Nick Dunklee <nick@dunklee.org>
mikecarper
