Integrate ExpressLRS TX module support and its stacked ESP32 heap changes.
Use the approved Linkflow calibration (17-30 dBm), preserve the PA drive
and output path after radio recovery, and keep LoRa OTA enabled.
Preserve stored ACLs and filters on allocation failure, release owned
client/filter buffers, service heap OTA contexts on Companions, release
self-serving workspaces after TempRadio, and reset staged-resume state
when a context is released. Keep manual staging and active operations
alive. Account for all moved allocations in the runtime RAM gate.
Validation: 1,393 native cases; radio-power, heap-context, ACL persistence,
shared-queue transfer, display/inbox, radio receive, and memory regressions.
Firmware builds passed for Linkflow, Heltec V2 Companion, T-Beam MQTT
repeater, Heltec V4 R8 MQTT repeater, RAK4631 repeater, and Indicator Full.
Physical verification awaits access to the currently offline lab Pi.
An ExpressLRS 900 MHz transmitter module: ESP32-D0WDQ6, 4 MB flash, SX1276
driving an external PA through a DAC gain input on GPIO26.
Pin values come from the ExpressLRS hardware layout for this target
(Unified_ESP32_900_TX). The board brings out only RX_EN, so RadioLib's
single-pin RF switch handling covers it. Note GPIO12 is both RX_EN and the
MTDI flash-voltage strapping pin, so it must stay low through reset.
Verified on hardware: boots, radio initialises, TX power changes take
effect and are rejected outside the configured range, and the node repeats
flood traffic.
Uses dual_ota_1536k.csv, and 115200 for upload because the CH340 on this
board corrupts transfers above 230400.
mikecarper
MUSTARDTIGERFPV