AUTO_OFF_MILLIS is a power-save feature aimed at battery use. When the
board reports isExternalPowered() == true (USB or other DC source),
blanking the screen serves no purpose — there's nothing to conserve.
But OLEDs are vulnerable to burn-in with static content, so this
behaviour is gated behind a new build flag KEEP_DISPLAY_ON_USB. Default
is unchanged from upstream — the display blanks after AUTO_OFF_MILLIS
on USB or battery. Variants that ship with an LCD instead of an OLED
(e.g. heltec_t096) can opt in by adding -D KEEP_DISPLAY_ON_USB to
their env, gaining always-on-while-powered without exposing OLED users
to burn-in risk.
When the flag is enabled, the implementation refreshes _auto_off every
loop iteration while externally powered, so the timer naturally counts
a fresh AUTO_OFF_MILLIS window from the moment power is removed —
no instantaneous-blank-on-unplug.
Applied to all three companion_radio UI flavours (ui-new, ui-tiny,
ui-orig). Boards without an isExternalPowered() override use the
base-class default in MeshCore.h (returns false), so battery-powered
behaviour is unchanged everywhere.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
Framework for upcoming variant-specific PRs that add LED feedback during boot. The hook gives users visual cues that the device is busy and
shouldn't be interacted with until startup completes.
- Remove extra blank line in companion_radio main.cpp before NRF52/STM32 block
- Revert unintended STM32_PLATFORM ETHERNET_ENABLED branch (no STM32 ethernet target exists, and it incorrectly included nrf52 headers)
- Drop renovate annotations from rak4631 platformio.ini (no renovate config in this repo)
The companion_radio example was not restoring the GPS enabled/disabled
preference from flash after reboot. The preference was being saved
correctly when toggled via the mobile app, but on boot,
sensors.begin() -> initBasicGPS() unconditionally sets gps_active=false
and nothing subsequently restored the persisted state.
Added applyGpsPrefs() (matching the pattern in simple_repeater,
simple_sensor, and simple_room_server) and call it from main.cpp
after sensors.begin() to ensure the GPS hardware is initialized
before the saved preference is applied.
The Ethernet retry loop in repeater and room server checked
hardwareStatus() and linkStatus() before calling Ethernet.begin(),
which always returned EthernetNoHardware since hardware detection
only happens during begin(). Extract shared Ethernet CLI code into
EthernetCLI.h to prevent future divergence. Also fix time_t type
mismatch in companion radio Ethernet init.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>