platformio.ini

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

[crosspoint]
version = 1.5.0

[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
check_tool = cppcheck
; missingInclude (project headers) is suppressed alongside missingIncludeSystem: on a
; fresh CI checkout cppcheck has no resolved include paths, so it reports every
; project header as missing (~400 information-level lines) and fails the job.
check_flags = --enable=all --suppress=missingIncludeSystem --suppress=missingInclude --suppress=unusedFunction --suppress=unmatchedSuppression --suppress=*:*/.pio/* --inline-suppr
check_skip_packages = yes

board_upload.flash_size = 16MB
board_upload.maximum_size = 16777216
board_upload.offset_address = 0x10000

build_flags =
  -DARDUINO_USB_MODE=1
  -DARDUINO_USB_CDC_ON_BOOT=1
  -DEINK_DISPLAY_SINGLE_BUFFER_MODE=1
  -DDISABLE_FS_H_WARNING=1
  -DDESTRUCTOR_CLOSES_FILE=1
# https://libexpat.github.io/doc/api/latest/#XML_GE
  -DXML_GE=0
  -DXML_CONTEXT_BYTES=1024
  -std=gnu++2a
# Enable UTF-8 long file names in SdFat
  -DUSE_UTF8_LONG_NAMES=1
# Increase PNG scanline buffer to support up to 2048px wide images
# Default is (320*4+1)*2=2562, we need more for larger images
  -DPNG_MAX_BUFFERED_PIXELS=16416
  -DFREEINK_NET_WOLFSSL=1
  -DWOLFSSL_USER_SETTINGS
  -DWOLFSSL_OPTIONS_H
  -DWOLFSSL_CLIENT_EXAMPLE
  -DWOLFSSL_TLS13
# MEMFIX-PORT: single-precision ECC (sp_c32.c). Without it every P-256 operation
# (TLS 1.3 key_share keygen, ECDHE, ECDSA cert verify) runs on fast-math bignums
# that WOLFSSL_SMALL_STACK heap-allocates at FP_MAX_BITS size -- tens of KB of
# temporaries, which OOMs (MP_MEM) at the ~50KB free heap a reading session
# leaves. SP uses fixed 256-bit arrays: a few KB, and several times faster.
# SP_SMALL trades the large precomputed point tables for smaller flash.
  -DWOLFSSL_HAVE_SP_ECC
  -DWOLFSSL_SP_SMALL
  -DHAVE_TLS_EXTENSIONS
  -DHAVE_SUPPORTED_CURVES
  -DHAVE_HKDF
  -DHAVE_FFDHE_2048
  -DHAVE_CURVE25519
  -DWC_RSA_PSS
  -DHAVE_SNI
  -Wno-bidi-chars
  -Wl,--wrap=panic_print_backtrace,--wrap=panic_abort,--wrap=bootloader_common_check_efuse_blk_validity
  -fno-exceptions

build_unflags =
  -std=gnu++11
  -fexceptions

; Board configuration
board_build.flash_mode = dio
board_build.flash_size = 16MB
board_build.partitions = partitions.csv

; MEMFIX-PORT: custom_sdkconfig heap reclamation (~32-37 KB). Rebuilds the
; Arduino core libs on first build (slower once, cached after; needs the CMake
; pin in platformio.local.ini on macOS).
;
; If an interrupted rebuild fails with "multiple definition of 'app_main'"
; (stale generated scaffold), clean it up with:
;   rm -rf .dummy CMakeLists.txt sdkconfig.default sdkconfig.defaults .pio/build/default
; Do NOT use `git clean -fdX` — it deletes platformio.local.ini.
custom_sdkconfig =
  ; Task stack right-sizing from measured high-water marks (heap block map +
  ; per-task stack audit, July 2026): esp_timer used ~0.8 KB of 8 KB across
  ; every capture; the FreeRTOS timer service used ~0.5 KB
  ; of 4 KB. Neither runs TLS or app code. ~7 KB back to the heap.
  CONFIG_ESP_TIMER_TASK_STACK_SIZE=4096
  CONFIG_FREERTOS_TIMER_TASK_STACK_DEPTH=2560
  ; Move the WiFi stack's non-critical hot paths out of IRAM into flash.
  ; On the C3, IRAM and DRAM share one SRAM pool, so the ~25-30 KB this
  ; frees lands directly in the heap — paid for with lower WiFi throughput
  ; during transfers (occasional sync/OTA use, not streaming: acceptable).
  ; IRAM cost is static, so the heap gain applies even with WiFi off.
  CONFIG_ESP_WIFI_IRAM_OPT=n
  CONFIG_ESP_WIFI_RX_IRAM_OPT=n
  ; Keep the Arduino wrappers for the removed cloud components (below) out of
  ; the core source list; all other bundled libraries default to enabled.
  CONFIG_ARDUINO_SELECTIVE_COMPILATION=y
  CONFIG_ARDUINO_SELECTIVE_RainMaker=n
  CONFIG_ARDUINO_SELECTIVE_Insights=n
  ; ESP_SR (speech recognition) only exists in the S3 core; its wrapper includes
  ; ESP_I2S.h, which the isolated core rebuild can't resolve. Unused here anyway,
  ; so drop it or the sticky env fails to build.
  CONFIG_ARDUINO_SELECTIVE_ESP_SR=n

; Drop unused cloud components from the core rebuild. esp_insights/rainmaker
; require embedded server certs the lib builder can't generate
; ("https_server.crt.S not found"); this firmware uses none of them.
custom_component_remove =
  espressif/esp_insights
  espressif/esp_rainmaker
  espressif/esp_diagnostics
  espressif/esp_diag_data_store
  espressif/esp_schedule
  espressif/esp_rcp_update
  espressif/esp_secure_cert_mgr
  espressif/cbor

extra_scripts =
  pre:scripts/patch_wolfssl.py
  pre:scripts/build_html.py
  pre:scripts/gen_i18n.py
  pre:scripts/git_branch.py
  pre:scripts/patch_jpegdec.py
  post:scripts/register_unit_tests_target.py

; Libraries
lib_deps =
  BatteryMonitor=symlink://freeink-sdk/libs/hardware/BatteryMonitor
  InputManager=symlink://freeink-sdk/libs/hardware/InputManager
  EInkDisplay=symlink://freeink-sdk/libs/display/FreeInkDisplay
  SDCardManager=symlink://freeink-sdk/libs/hardware/SDCardManager
  BoardConfig=symlink://freeink-sdk/libs/hardware/BoardConfig
  XteinkDetect=symlink://freeink-sdk/libs/hardware/XteinkDetect
  PowerManager=symlink://freeink-sdk/libs/hardware/PowerManager
  Rtc=symlink://freeink-sdk/libs/hardware/Rtc
  Imu=symlink://freeink-sdk/libs/hardware/Imu
  SecureNet=symlink://freeink-sdk/libs/network/SecureNet
  FreeInkUI=symlink://freeink-sdk/libs/ui/FreeInkUI
  Icons=symlink://freeink-sdk/libs/assets/Icons
  bblanchon/ArduinoJson @ 7.4.2
  ricmoo/QRCode @ 0.0.1
  bitbank2/PNGdec @ 1.1.6
  https://github.com/bitbank2/JPEGDEC.git#86282979224c8a32fd51e091ed5a35b0c699a52b
  links2004/WebSockets @ 2.7.3
  wolfssl/Arduino-wolfSSL @ 5.7.2

lib_ignore =
  BLE

[env:default]
extends = base
build_flags =
  ${base.build_flags}
  ; CROSSPOINT_VERSION is set by scripts/git_branch.py (includes branch + short SHA)
  -DFREEINK_DEVICE_X4=1
  -DFREEINK_DEVICE_X3=1
  -DENABLE_SERIAL_LOG
  -DLOG_LEVEL=2 ; Set log level to debug for development builds


[env:gh_release]
extends = base
build_flags =
  ${base.build_flags}
  -DFREEINK_DEVICE_X4=1
  -DFREEINK_DEVICE_X3=1
  -DCROSSPOINT_VERSION=\"${crosspoint.version}\"
  -DENABLE_SERIAL_LOG
  -DLOG_LEVEL=1 ; Set log level to info for release builds

[env:gh_release_rc]
extends = base
build_flags =
  ${base.build_flags}
  -DFREEINK_DEVICE_X4=1
  -DFREEINK_DEVICE_X3=1
  -DCROSSPOINT_VERSION=\"${crosspoint.version}-rc+${sysenv.CROSSPOINT_RC_HASH}\"
  -DENABLE_SERIAL_LOG
  -DLOG_LEVEL=1 ; Set log level to info for release candidate builds

[env:slim]
extends = base
build_flags =
  ${base.build_flags}
  -DFREEINK_DEVICE_X4=1
  -DFREEINK_DEVICE_X3=1
  -DCROSSPOINT_VERSION=\"${crosspoint.version}-slim\"
  ; serial output is disabled in slim builds to save space
  -UENABLE_SERIAL_LOG

; --- Seeed Sticky — ESP32-S3R8, 3.97" 800x480 SSD1677 + GT911 touch -----------
; Different MCU family than the C3 envs (one binary per family). The SDK
; auto-enables CAP_TOUCH (GT911) and the BQ27220 gauge for this device; PSRAM is
; intentionally left off (48KB framebuffer fits in DRAM, same as X4).
;   pio run -e sticky -t upload
[env:sticky]
extends = base
board = esp32-s3-devkitc1-n16r8
board_build.mcu = esp32s3
build_flags =
  ${base.build_flags}
  -DFREEINK_DEVICE_STICKY=1
  ; git_branch.py only injects CROSSPOINT_VERSION for the default env; set it here.
  -DCROSSPOINT_VERSION=\"${crosspoint.version}-sticky\"
  -DENABLE_SERIAL_LOG
  -DLOG_LEVEL=2