platformio.ini

; InkDeck — minimal markdown writing firmware for the Xteink X3/X4.
;
; Pairs a BLE HID input device and writes .md files to the SD card. Built on the FreeInk
; SDK, consumed exactly like the escape-hatch example: the committed [base]
; lib_deps point at a `freeink-sdk` submodule via symlink://, and a per-developer
; platformio.local.ini overrides them with absolute symlinks to a local working
; copy so SDK changes (the BleKeyboardHost lib, the FreeInkUI textArea component)
; iterate without committing the submodule.

[platformio]
default_envs = default
build_cache_dir = .cache
extra_configs = platformio.local.ini

[base]
platform = https://github.com/pioarduino/platform-espressif32/releases/download/55.03.37/platform-espressif32.zip
board = esp32-c3-devkitm-1
framework = arduino
monitor_speed = 115200
upload_speed = 921600

; Match the device's existing 16MB / dual-OTA layout so the stock bootloader and
; otadata pick up whatever we flash. Upload lands the app at the ota_0 offset.
board_upload.flash_size = 16MB
board_upload.maximum_size = 16777216
board_upload.offset_address = 0x10000
board_build.flash_mode = dio
board_build.flash_size = 16MB
board_build.partitions = partitions.csv

build_flags =
  -DARDUINO_USB_MODE=1
  -DARDUINO_USB_CDC_ON_BOOT=1
  -DEINK_DISPLAY_SINGLE_BUFFER_MODE=1
  ; --- BLE HID host capability ----------------------------------------------
  ; NimBLE roles/bonds/connections come from the Arduino framework's prebuilt
  ; sdkconfig (NimBLE is a precompiled lib, so command-line CONFIG_BT_NIMBLE_*
  ; overrides are ignored and only warn). The host uses a single connection.
  -DFREEINK_CAP_BLE_HID_HOST=1
  ; Scan BLE 5 extended advertising. Many modern devices put
  ; their name/service UUIDs in the extended-advertising AUX packet, invisible to
  ; a legacy scan. NimBLE-Arduino compiles its own host, so this flag enables it.
  -DCONFIG_BT_NIMBLE_EXT_ADV=1
  ; Bring-up: log discovered BLE devices over serial (remove once paired).
  -DFREEINK_BLE_HID_SCAN_DEBUG=1
  ; Hide anonymous non-HID advertisers from the pairing list. Flip to 1 for BLE bring-up.
  -DFREEINK_BLE_HID_SHOW_UNNAMED_DEVICES=0
  ; In-RAM editor capacity (single static buffer). Bump for longer notes.
  -DINKDECK_DOC_CAPACITY=16384
  -std=gnu++2a
  -fno-exceptions

build_unflags =
  -std=gnu++11
  -fexceptions

; Default (committed) dependency paths. platformio.local.ini replaces this whole
; block with absolute symlinks to a locally-checked-out freeink-sdk.
lib_deps =
  BoardConfig=symlink://freeink-sdk/libs/hardware/BoardConfig
  EInkDisplay=symlink://freeink-sdk/libs/display/FreeInkDisplay
  InputManager=symlink://freeink-sdk/libs/hardware/InputManager
  SDCardManager=symlink://freeink-sdk/libs/hardware/SDCardManager
  PowerManager=symlink://freeink-sdk/libs/hardware/PowerManager
  Icons=symlink://freeink-sdk/libs/assets/Icons
  FreeInkUI=symlink://freeink-sdk/libs/ui/FreeInkUI
  XteinkDetect=symlink://freeink-sdk/libs/hardware/XteinkDetect
  BleKeyboardHost=symlink://freeink-sdk/libs/network/BleKeyboardHost
  ; NimBLE-Arduino (not esp-nimble-cpp): the Arduino-targeted build with the
  ; arduino-esp32 3.3.7 controller-init fix (PR #1090, in 2.3.8+). Same NimBLE*
  ; C++ API. esp-nimble-cpp's IDF init path crashes (r_lld_env_init) on 3.3.7.
  h2zero/NimBLE-Arduino@^2.3.8

; ESP32-C3 dual-device binary: X3 + X4 compiled in, chosen at runtime by the
; XteinkDetect I2C fingerprint.
[env:default]
extends = base
build_flags =
  ${base.build_flags}
  -DFREEINK_DEVICE_X4=1
  -DFREEINK_DEVICE_X3=1