Did ESPHome 2026.2.0 break bme688 (bme68x_bsec2)?

arjunprabhu · February 19, 2026, 8:21am

using code block from https://esphome.io/components/sensor/bme68x_bsec2/

# Minimal example configuration with common sensors
bme68x_bsec2_i2c:
  address: 0x76
  model: bme688
  operating_age: 28d
  sample_rate: LP
  supply_voltage: 3.3V

========================

was working just fine for months, but now, post 2026.2 – get compile error…

INFO ESPHome 2026.2.0
INFO Reading configuration /config/esphome/myEspHomeProject.yaml...
WARNING OTA rollback requires safe_mode, disabling rollback support
INFO Generating C++ source...
INFO Setting CONFIG_LWIP_MAX_SOCKETS to 14 (registered: api=4, captive_portal=4, mdns=2, ota=1, web_server=3)
INFO Deleting /data/build/myEspHomeProject/.pioenvs/myEspHomeProject/CMakeCache.txt
INFO Integrations changed, cleaning cmake cache...
INFO Compiling app... Build path: /data/build/myEspHomeProject
Processing myEspHomeProject (board: esp32-c3-devkitm-1; framework: arduino, espidf; platform: https://github.com/pioarduino/platform-espressif32/releases/download/55.03.37/platform-espressif32.zip)
--------------------------------------------------------------------------------
Removing unused dependencies...
Library Manager: Installing git+https://github.com/boschsensortec/Bosch-BME68x-Library
INFO Installing git+https://github.com/boschsensortec/Bosch-BME68x-Library
git version 2.39.5
Cloning into '/data/cache/platformio/cache/tmp/pkg-installing-sa5fnamh'...
Library Manager: BME68x Sensor [email protected]+sha.4f37df6 has been installed!
INFO BME68x Sensor [email protected]+sha.4f37df6 has been installed!
Library Manager: Installing git+https://github.com/boschsensortec/Bosch-BSEC2-Library.git#1.10.2610
INFO Installing git+https://github.com/boschsensortec/Bosch-BSEC2-Library.git#1.10.2610
git version 2.39.5
Cloning into '/data/cache/platformio/cache/tmp/pkg-installing-e5omcrrh'...
Library Manager: BSEC2 Software [email protected]+sha.0dac6ea has been installed!
INFO BSEC2 Software [email protected]+sha.0dac6ea has been installed!
HARDWARE: ESP32C3 160MHz, 320KB RAM, 4MB Flash
 - contrib-piohome @ 3.4.4 
 - framework-arduinoespressif32 @ 3.3.7 
 - framework-arduinoespressif32-libs @ 5.5.2 
 - framework-espidf @ 3.50502.0 (5.5.2) 
 - tool-cmake @ 4.0.3 
 - tool-esp-rom-elfs @ 2024.10.11 
 - tool-esptoolpy @ 5.1.2 
 - tool-ninja @ 1.13.1 
 - tool-scons @ 4.40801.0 (4.8.1) 
 - toolchain-riscv32-esp @ 14.2.0+20251107
Reading CMake configuration...
Generating assembly for certificate bundle...
Dependency Graph
|-- noise-c @ 0.1.10
|-- SPI @ 3.3.7
|-- BME68x Sensor library @ 1.3.40408+sha.4f37df6
|-- bsec2 @ 1.10.2610+sha.0dac6ea
Compiling .pioenvs/myEspHomeProject/src/esphome/components/amg8833/amg8833.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_connection.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_frame_helper.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_frame_helper_noise.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_pb2.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_pb2_service.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/api_server.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/list_entities.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/proto.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/api/subscribe_state.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/binary_sensor/automation.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/binary_sensor/binary_sensor.cpp.o
Compiling .pioenvs/myEspHomeProject/src/esphome/components/binary_sensor/filter.cpp.o
**Compiling .pioenvs/myEspHomeProject/src/esphome/components/bme68x_bsec2/bme68x_bsec2.cpp.o**
**In file included from src/esphome/components/bme68x_bsec2/bme68x_bsec2.h:20,**
**                 from src/esphome/components/bme68x_bsec2/bme68x_bsec2.cpp:7:**
**.piolibdeps/myEspHomeProject/BSEC2 Software Library/src/bsec2.h:45:10: fatal error: Wire.h: No such file or directory**

********************************************************************
* Looking for Wire.h dependency? Check our library registry!
*
* CLI  > platformio lib search "header:Wire.h"
* Web  > https://registry.platformio.org/search?q=header:%1B%5Bm%1B%5BKWire.h
*
********************************************************************

   45 | #include "Wire.h"
      |          ^~~~~~~~
compilation terminated.
*** [.pioenvs/myEspHomeProject/src/esphome/components/bme68x_bsec2/bme68x_bsec2.cpp.o] Error 1
========================= [FAILED] Took 24.32 seconds =========================

Any pointers ?

the library on Bosh github hasn’t changed in the recent months (GitHub - boschsensortec/Bosch-BSEC2-Library: Arduino library to simplify using Bosch Sensortec's BSEC2 library)

arjunprabhu · February 19, 2026, 8:43am

fix… for anyone encountering this issue in the future…


esphome:
  # ... your other settings
  platformio_options:
    lib_ldf_mode: deep+

cleanup the build files, and then install.

thanks to Gemini!.

not sure by 2026.2.0 caused this…though – have updated several times in the past for older versions of ESPHome.

wardaddy · February 19, 2026, 9:18pm

Mine broke too! It was working well for years! It wouldnt recompile giving an error for wire.h untill I see this thread and tried your code. Now it compiles and installed but unable to communicate with BSEC

[E][bme68x_bsec2.sensor:071]: Communication failed (BSEC2 status: 0, BME68X status: -2)
[E][component:255]: bme68x_bsec2 is marked FAILED: unspecified

chianti2000 · February 21, 2026, 4:05pm

Das gleiche Problem bei mir. Wer jhat eine Lösung ?
Sensor ist ein ESP32C6 mit esphome configuriert.

bdraco · February 22, 2026, 5:21am

github.com/esphome/esphome

[bme68x_bsec2] Fix compilation on ESP32 Arduino

dev ← fix-bme68x-bsec2-esp32-arduino

opened 05:15AM - 22 Feb 26 UTC

bdraco

+8 -1

# What does this implement/fix? Fix `bme68x_bsec2` compilation failure on ESP32… Arduino after the selective compilation change in 2026.2.0. The BSEC2 and BME68x third-party Bosch libraries unconditionally include `Wire.h` and `SPI.h` in their `.cpp` source files when compiled under Arduino (`#ifdef ARDUINO`). With selective compilation now enabled, `Wire` is no longer available by default and the build fails with: ``` fatal error: Wire.h: No such file or directory ``` While ESPHome's component uses its own I2C/SPI abstractions and never calls the Arduino Wire/SPI APIs directly, PlatformIO still compiles the third-party library source files which require these headers. Unfortunately, while the component works cleanly on ESP-IDF without any Arduino dependencies, when Arduino is present the third-party libraries drag in Arduino-specific headers that we have no control over. Also adds the missing `test.esp32-ard.yaml` test which would have caught this regression. Reported at: https://community.home-assistant.io/t/did-esphome-2026-2-0-break-bme688-bme68x-bsec2/988435 ## Types of changes - [x] Bugfix (non-breaking change which fixes an issue) - [ ] New feature (non-breaking change which adds functionality) - [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected) - [ ] Developer breaking change (an API change that could break external components) - [ ] Code quality improvements to existing code or addition of tests - [ ] Other **Related issue or feature (if applicable):** - https://community.home-assistant.io/t/did-esphome-2026-2-0-break-bme688-bme68x-bsec2/988435 **Pull request in [esphome-docs](https://github.com/esphome/esphome-docs) with documentation (if applicable):** - N/A ## Test Environment - [x] ESP32 - [ ] ESP32 IDF - [ ] ESP8266 - [ ] RP2040 - [ ] BK72xx - [ ] RTL87xx - [ ] LN882x - [ ] nRF52840 ## Example entry for `config.yaml`: ```yaml # No config changes needed - existing configs will work again bme68x_bsec2_i2c: address: 0x76 model: bme688 operating_age: 28d sample_rate: LP supply_voltage: 3.3V ``` ## Checklist: - [x] The code change is tested and works locally. - [x] Tests have been added to verify that the new code works (under `tests/` folder). If user exposed functionality or configuration variables are added/changed: - [ ] Documentation added/updated in [esphome-docs](https://github.com/esphome/esphome-docs).

also changing framework to esp-idf will make the problem go away if you don’t actually need ard