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observer-firmware-dev
MeshCore-mqtt-observer/platformio.ini
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agessaman 8275512964 build(mqtt): make the reduced-TLS mbedTLS archives shippable, opt-in and verified 
The reduced-TLS work was validated on hardware but only reachable through
PLATFORMIO_BUILD_FLAGS pointing at an absolute path in a developer's home
directory, so nothing outside that machine could reproduce it.

Distribute the archives as a release asset instead of committing them: ~6 MB
per architecture, and they must be rebuilt for every espressif32 bump, so
committing would grow history permanently and go stale without any signal.

  scripts/mbedtls_4k_manifest.txt  per-arch sha256 of each archive
  scripts/fetch_mbedtls_4k.sh      fetch into .mbedtls-4k/<arch>/, verify
  scripts/mbedtls_4k.py            pre-build wiring and post-link proof

Off by default. The script is attached to esp32_base but returns immediately
unless MESHCORE_REDUCED_TLS=1, so ordinary builds need no artifact and are
byte-for-byte unaffected — confirmed by building with it absent.

Both ways this can fail silently produce a firmware that looks fine and lacks
the change, so the opt-in path refuses to guess:

  - a -L at a missing or partial directory: the linker ignores an unusable
    search path and resolves mbedTLS from the framework. Now a hard error.
  - archives left over from an earlier platform version: now a sha256
    mismatch against the manifest, naming both hashes.
  - a -L that is present but outranked, leaving the flag inert: after the
    link, firmware.map must resolve every libmbed*.a into .mbedtls-4k/, or
    the build fails and prints the offending paths.

That last check earned its place immediately — it caught its own first
implementation comparing a relative map path against an absolute one, and an
earlier build flag in this investigation was accepted by the compiler while
no source read it. A flag reaching the compiler proves nothing about the link.

Verified all four paths on Heltec_v3_repeater_observer_mqtt: default build
unaffected; opted in with archives present links all four from .mbedtls-4k/
and says so; archives absent fails with a fetch hint; a single appended byte
fails on sha256.

Also removes platformio.local.ini.hold, which held the superseded approach of
pointing platform_packages at a whole custom framework. That installs over the
shared framework package and changes mbedTLS for every other ESP32 project on
the machine; the -L path keeps the change scoped to one env.

Note the inbound record buffer stays at 16 KiB, so this lowers per-connection
footprint by ~12 KiB but does not move the contiguous allocation a handshake
needs. It buys headroom, not a lower floor.

(cherry picked from commit a87faff6ff170c328fdd0550f4b4dd9089aa2ea0)
2026-08-14 09:47:40 -07:00

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; PlatformIO Project Configuration File
;
; Build options: build flags, source filter
; Upload options: custom upload port, speed and extra flags
; Library options: dependencies, extra library storages
; Advanced options: extra scripting
;
; Please visit documentation for the other options and examples
; https://docs.platformio.org/page/projectconf.html
[platformio]
extra_configs =
variants/*/platformio.ini
platformio.local.ini
[arduino_base]
framework = arduino
monitor_speed = 115200
lib_deps =
SPI
Wire
;jgromes/RadioLib @ ^7.7.1
https://github.com/jgromes/RadioLib.git#6d8934836678d8894e3d556550475b37dce3e2b6
rweather/Crypto @ ^0.4.0
adafruit/RTClib @ ^2.1.3
melopero/Melopero RV3028 @ ^1.1.0
electroniccats/CayenneLPP @ 1.6.1
build_flags = -w -DNDEBUG -DRADIOLIB_STATIC_ONLY=1 -DRADIOLIB_GODMODE=1
-D LORA_FREQ=869.618
-D LORA_BW=62.5
-D LORA_SF=8
-D ENABLE_ADVERT_ON_BOOT=1
-D ENABLE_PRIVATE_KEY_IMPORT=1 ; NOTE: comment these out for more secure firmware
-D ENABLE_PRIVATE_KEY_EXPORT=1
-D RADIOLIB_EXCLUDE_CC1101=1
-D RADIOLIB_EXCLUDE_RF69=1
-D RADIOLIB_EXCLUDE_SX1231=1
-D RADIOLIB_EXCLUDE_SI443X=1
-D RADIOLIB_EXCLUDE_RFM2X=1
-D RADIOLIB_EXCLUDE_SX128X=1
-D RADIOLIB_EXCLUDE_AFSK=1
-D RADIOLIB_EXCLUDE_AX25=1
-D RADIOLIB_EXCLUDE_HELLSCHREIBER=1
-D RADIOLIB_EXCLUDE_MORSE=1
-D RADIOLIB_EXCLUDE_APRS=1
-D RADIOLIB_EXCLUDE_BELL=1
-D RADIOLIB_EXCLUDE_RTTY=1
-D RADIOLIB_EXCLUDE_SSTV=1
build_src_filter =
+<*.cpp>
+<helpers/*.cpp>
; MQTT-only sources (need Timezone/NTPClient); observer envs add them back.
-<helpers/MQTTMessageBuilder.cpp>
-<helpers/JWTHelper.cpp>
+<helpers/radiolib/*.cpp>
+<helpers/bridges/BridgeBase.cpp>
+<helpers/ui/MomentaryButton.cpp>
; ----------------- ESP32 ---------------------
[esp32_base]
extends = arduino_base
platform = platformio/espressif32@6.11.0
monitor_filters = esp32_exception_decoder
extra_scripts =
pre:scripts/generate_webconfig_html.py
; No-op unless MESHCORE_REDUCED_TLS=1; see docs/mbedtls-tls-footprint.md.
pre:scripts/mbedtls_4k.py
merge-bin.py
build_flags = ${arduino_base.build_flags}
-D ESP32_PLATFORM
; Route esp_transport_ws_init through src/helpers/ESP32WsTransportFix.cpp to
; fix a heap-overflow in the precompiled IDF 4.4 WS transport (see that file).
-Wl,--wrap=esp_transport_ws_init
; -D ESP32_CPU_FREQ=80 ; change it to your need
build_src_filter = ${arduino_base.build_src_filter}
+<helpers/esp32/WebConfigServer.cpp> ; empty TU unless WITH_MQTT_BRIDGE
[esp32_ota]
lib_deps =
ESP32Async/ESPAsyncWebServer @ 3.10.3
file://arch/esp32/AsyncElegantOTA
; esp32c6 uses arduino framework 3.x
; WARNING: experimental. May not work as stable as other platforms.
[esp32c6_base]
extends = esp32_base
platform = https://github.com/pioarduino/platform-espressif32/releases/download/53.03.13-1/platform-espressif32.zip
; ----------------- NRF52 ---------------------
[nrf52_base]
extends = arduino_base
platform = nordicnrf52
platform_packages =
; use internal fork that includes patch to ble stack to prevent firmware lockup during rapid connect/disconnect
; https://github.com/meshcore-dev/MeshCore/pull/1177
; https://github.com/meshcore-dev/MeshCore/pull/1295
framework-arduinoadafruitnrf52 @ https://github.com/meshcore-dev/Adafruit_nRF52_Arduino#d541301
extra_scripts = create-uf2.py
build_flags = ${arduino_base.build_flags}
-D NRF52_PLATFORM
-D LFS_NO_ASSERT=1
-D EXTRAFS=1
-D USE_CC310_HW_CRYPTO=1
lib_deps =
${arduino_base.lib_deps}
https://github.com/oltaco/CustomLFS#0.2.3
; Vendored ESP-IDF MQTT client; the LDF otherwise pulls it into non-ESP builds.
lib_ignore = PsychicMqttClient
; ----------------- RP2040 ---------------------
[rp2040_base]
extends = arduino_base
upload_protocol = picotool
board_build.core = earlephilhower
platform = https://github.com/maxgerhardt/platform-raspberrypi.git ; framework-arduinopico @ 1.50600.0+sha.6a1d13e9
build_flags = ${arduino_base.build_flags}
-D RP2040_PLATFORM
; ----------------- STM32 ----------------------
[stm32_base]
extends = arduino_base
platform = ststm32
extra_scripts = post:arch/stm32/build_hex.py
build_flags = ${arduino_base.build_flags}
-D STM32_PLATFORM
-I src/helpers/stm32
-I $PROJECT_PACKAGES_DIR/framework-arduinoststm32/libraries/SubGhz/src
build_src_filter = ${arduino_base.build_src_filter}
+<helpers/stm32>
lib_deps = ${arduino_base.lib_deps}
file://arch/stm32/Adafruit_LittleFS_stm32
SubGhz
[sensor_base]
build_flags =
-D ENV_INCLUDE_GPS=1
-D ENV_INCLUDE_AHTX0=1
-D ENV_INCLUDE_BME280=1
-D ENV_INCLUDE_BMP280=1
-D ENV_INCLUDE_SHTC3=1
-D ENV_INCLUDE_SHT4X=1
-D ENV_INCLUDE_LPS22HB=1
-D ENV_INCLUDE_INA3221=1
-D ENV_INCLUDE_INA219=1
-D ENV_INCLUDE_INA226=1
-D ENV_INCLUDE_INA260=1
-D ENV_INCLUDE_MLX90614=1
-D ENV_INCLUDE_VL53L0X=1
-D ENV_INCLUDE_BME680=1
-D ENV_INCLUDE_BMP085=1
lib_deps =
adafruit/Adafruit INA3221 Library @ ^1.0.1
adafruit/Adafruit INA219 @ ^1.2.3
robtillaart/INA226 @ ^0.6.4
adafruit/Adafruit INA260 Library @ ^1.5.3
adafruit/Adafruit AHTX0 @ ^2.0.5
adafruit/Adafruit BME280 Library @ ^2.3.0
adafruit/Adafruit BMP280 Library @ ^2.6.8
adafruit/Adafruit SHTC3 Library @ ^1.0.1
sensirion/Sensirion I2C SHT4x @ ^1.1.2
arduino-libraries/Arduino_LPS22HB @ ^1.0.2
adafruit/Adafruit MLX90614 Library @ ^2.1.5
adafruit/Adafruit_VL53L0X @ ^1.2.4
stevemarple/MicroNMEA @ ^2.0.6
adafruit/Adafruit BME680 Library @ ^2.0.4
adafruit/Adafruit BMP085 Library @ ^1.2.4
; ----------------- TESTING ---------------------
; Host GoogleTest suites for the fork's pure logic. See test/README.md.
; Run: `pio test -e native` (all) or `pio test -e native -f <suite>` (one).
[env:native]
platform = native
test_framework = googletest
build_flags = -std=c++17
-I src
-I test/mocks
test_build_src = yes
test_ignore = test_kiss_modem
build_src_filter =
-<*>
+<../src/Utils.cpp>
+<../src/helpers/MQTTPayloadBuilder.cpp>
+<../src/Packet.cpp>
+<../src/helpers/ConfigSerializer.cpp>
lib_deps =
google/googletest @ 1.17.0
bblanchon/ArduinoJson @ 7.4.3
[env:native_kiss_modem]
platform = native
test_framework = googletest
build_flags = -std=c++17
-I test/mocks
-I src
-I examples/kiss_modem
test_build_src = yes
test_filter = test_kiss_modem
build_src_filter =
-<*>
+<../examples/kiss_modem/KissModem.cpp>
lib_deps =
google/googletest @ 1.17.0
bblanchon/ArduinoJson @ 7.4.3
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