* fix(graphics): drive GPIO backlights from the stored brightness level
Screen::handleSetOn restored PIN_EINK_EN only when screen_brightness was
exactly 1. The field is 0..255 and defaults to 153, so the frontlight stayed
off after a screen timeout until the next reboot.
InputBroker read screen_brightness as "currently lit" for the touch backlight,
so a stored level made touch-to-light a no-op. The HAPTIC_FEEDBACK_PIN block
then reassigned touchConfig.onPress and onRelease, dropping those handlers on
any variant defining both.
MINI_EPAPER_S3 names its panel power rail PIN_EINK_EN. It was switched off with
the screen and never restored.
graphics::Backlight gains a GPIO backend covering PIN_EINK_EN and
PCA_PIN_EINK_EN, so Screen, MenuHandler and InputBroker call backlightOn,
backlightOff, backlightToggle and backlightIsLit instead of touching pins.
backlightIsLit reports the driven state, separate from the configured level.
Power-up state is declared per variant with GPIO_BACKLIGHT_DEFAULT_ON rather
than hardcoded in the e-ink driver. The backend stores only 0 or 255, so any
other stored level falls back to the variant default and no board changes its
existing behaviour. MINI_EPAPER_S3 is excluded and keeps its rail powered.
Touch handlers are merged so backlight and haptic feedback compose.
Verified on ThinkNode M1: lit at boot, off on timeout, lit on wake, and an
explicit off surviving both wake and reboot.
* chore(thinknode_m1): correct the LED pin comments
P0.13 drives the blue indicator, not a green one. P1.06 is a second drive for
the same red LED as LED_POWER, which is why it stays disabled.
* fix(graphics): clamp GPIO backlight levels at the setter
backlightSet stored whatever level it was given, so a caller passing an
intermediate value left backlightGet and the persisted config holding a level
the rail cannot drive. Clamp to off or on in the setter, which keeps the
invariant at the single write point instead of only at init.
* Add Elecrow ThinkNode M8 variant scaffold (thinknode_m8)
nRF52840 + SX1262 + 2.4" e-paper + ATGM336H-5NR32 GPS.
All pins resolved from ThinkNode_M8_V0.3.sch; cross-checked
against meshtastic/firmware#9181 (Elecrow V0.1 reference).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
* Add Elecrow ThinkNode M8 board support (nRF52840/SX1262, 1.54in e-ink, ATGM336H GNSS, SC7A20, EC04 encoder)
* Address review: keep the stored backlight level out of blanking, match only the SC7A20 WHO_AM_I byte, and transfer detents atomically
* Use std::atomic for the press-and-turn detent counter so native builds compile
* Drop the ThinkNode M8 LED_BUILTIN redefinition that warned on every translation unit
---------
Co-authored-by: claude[bot] <41898282+claude[bot]@users.noreply.github.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
Thomas Göttgens