- Enable BTN_FWD_GPIO (GPIO 10) as secondary button for mode toggle (Shift+Tab)
- Update BOARD_HAS_SECONDARY_BUTTON flag from 0 to 1
- Clarify button layout: BOOT (primary PTT), PWR (cycle screens via AXP), KEY (secondary mode toggle)
- Document KEY GPIO discovery method (empirical scanning of unused GPIOs)
- Update button_count calculation to include secondary button when available
- Initialize both BTN_BACK_GPIO and BTN_FWD_GPIO in input_hal_init()
- Refactor input_hal_is_held() to use switch statement for cleaner multi-button handling
- Add complete board support for Waveshare ESP32-C6-Touch-AMOLED-2.16 with SH8601 display driver
- Implement board initialization with AXP2101 PMU rail configuration for LCD and touch power
- Add display driver for SH8601 QSPI panel (480×480 resolution)
- Add CST9217 touch controller support via I2C
- Add QMI8658 IMU initialization and sensor reading
- Add AXP2101 power management and battery monitoring
- Add input handling for BOOT button (GPIO 9)
- Configure PlatformIO environment with C6-specific build flags and 16 MB flash layout
- Update capability flags documentation to clarify BOARD_HAS_PSRAM build-flag macro usage
- C6 has no external PSRAM; shared code gates on this flag to use internal SRAM and reduce LVGL buffer sizes
- Screenshot capture disabled on this board due to internal SRAM constraints
Alexander Wennerstrøm