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Apurva · ‎11-07-2019

Hello! I am currently using the BME680 with the ESP32. I am putting the ESP32 in deep sleep and using ultra low power mode, so it is taking measurements every 5 minutes. I was initially running it in low power mode without deep sleep and achieved an accuracy of 3 for IAQ and had state_save turned on. I then switched the code to run the ESP32 in ultra low power mode with deep sleep but the IAQ reading was very off (more than 100) and had an accuracy of 0 in the beginning even though I had loaded the previous state. After a couple of hours, the IAQ readings were still very off even though the accuracy showed 3. I know that the 0 accuracy is due to the run-in time of BSEC in ultra low power mode but what is the reason for the wrong IAQ values? Could it be because I changed from low power mode to ultra low power mode?

Apurva · ‎10-22-2019

Hello! I managed to fix the issue. I separated the BME680 files from the BSEC files. My BSEC component structure is as follows: include (folder) bsec_datatypes.h bsec_integration.h bsec_interface.h lib (folder) libalgobsec.h (normal) bsec_integration.c CMakeLists.txt component.mk The CMakeLists.txt contains: CODE: SELECT ALL set (COMPONENT_SRCS "bsec_integration.c" ) set (COMPONENT_ADD_INCLUDEDIRS include) set (COMPONENT_REQUIRES "BME680" ) register_component() target_link_libraries( ${COMPONENT_TARGET} "-L ${CMAKE_CURRENT_LIST_DIR} /lib" ) target_link_libraries( ${COMPONENT_TARGET} algobsec) The component.mk contains: CODE: SELECT ALL COMPONENT_SRCDIRS := . COMPONENT_ADD_INCLUDEDIRS := include LIBS := algobsec COMPONENT_ADD_LDFLAGS := -lbt -L $(COMPONENT_PATH) /lib \ $( addprefix -l,$(LIBS)) ALL_LIB_FILES := $( patsubst %,$(COMPONENT_PATH)/lib/lib%.a,$(LIBS)) COMPONENT_ADD_LINKER_DEPS := $(ALL_LIB_FILES) COMPONENT_SUBMODULES += lib My BME680 component structure is as follows: include (folder) bme680.h bme680_defs.h bme680_platforms.h bme680_types.h bme680.c bme680_platform.c CMakeLists.txt component.mk The CMakeLists.txt contains: CODE: SELECT ALL set (COMPONENT_SRCS "bme680_platform.c" "bme680.c" ) set (COMPONENT_ADD_INCLUDEDIRS "include" ) register_component() The component.mk contains: CODE: SELECT ALL COMPONENT_ADD_INCLUDEDIRS := include

Apurva · ‎10-08-2019

I have tried several variations of commands in that CMakeLists file and for all of them, the build output does not reference libalgobsec.a. I have also tried with target_link_libraries: add_library(algobsec STATIC IMPORTED) set_property(TARGET algobsec PROPERTY IMPORTED_LOCATION ${CMAKE_CURRENT_SOURCE_DIR}/lib/libalgobsec.a) target_link_libraries(${CMAKE_CURRENT_SOURCE_DIR}/src PUBLIC algobsec) The error that I get is "Cannot specify link libraries for target (component path) which is not built by this project." I tried: add_library(algobsec STATIC IMPORTED) set_property(TARGET algobsec PROPERTY IMPORTED_LOCATION ${PROJECT_SOURCE_DIR}/components/BSEC/lib/libalgobsec.a) target_link_libraries(${COMPONENT_TARGET} PUBLIC algobsec) This gave me an error - FAILED: bme680_test_with_bsec.elf. The CMakeError.log file gives this output: Compiling the CXX compiler identification source file "CMakeCXXCompilerId.cpp" failed. Compiler: C:/Users/Apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/xtensa-esp32-elf-g++.exe Build flags: -mlongcalls Id flags: The output was: 1 c:/users/apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/ 5 . 2 . 0 /../../../../xtensa-esp32-elf/bin/ld.exe: cannot find crt1-sim.o : No such file or directory c:/users/apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/ 5 . 2 . 0 /../../../../xtensa-esp32-elf/bin/ld.exe: cannot find _vectors.o : No such file or directory c:/users/apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/ 5 . 2 . 0 /../../../../xtensa-esp32-elf/bin/ld.exe: cannot find -lsim c:/users/apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/ 5 . 2 . 0 /../../../../xtensa-esp32-elf/bin/ld.exe: cannot find -lhandlers-sim c:/users/apurva/.espressif/tools/xtensa-esp32-elf/ 1 . 22 . 0 - 80 - g6c4433a5-5.2 . 0 /xtensa-esp32-elf/bin/../lib/gcc/xtensa-esp32-elf/ 5 . 2 . 0 /../../../../xtensa-esp32-elf/bin/ld.exe: cannot find -lhal collect2.exe : error: ld returned 1 exit status

Apurva · ‎10-02-2019

I have uploaded a file containing the logs that are observed when I run build after a fullclean. I think the warnings occur most probably because the the variables are being used in the functions that have undefined reference. I need help with the proper linking of the .a file because I have not been able to find any help online for the ESP32 microcontroller with ESP-IDF.

Apurva · ‎09-30-2019

I am using the BME680 with the ESP32-PoE and I want to use the BSEC library to get the IAQ. I have been stuck at the last step of linking the pre-built libalgobsec.a library. This is what my CMakeLists file in my BSEC components folder looks like: set(COMPONENT_SRCS "bme680.c" "bsec_integration.c") set(COMPONENT_ADD_INCLUDEDIRS "include") register_component() add_library(algobsec STATIC IMPORTED) set_property(TARGET algobsec PROPERTY IMPORTED_LOCATION ../lib/libalgobsec.a) I have not done the 3 steps for linking as stated in the Integration Guide as I do not know where to find the files to which I need to make changes. I am currently getting this error when I build the project: I would really appreciate any help to get the library running. Thank you!

Bosch Shared

About Apurva

Re: BME680 state_save / state_load problem

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Re: Linking BSEC library to ESP-IDF for BME680

Linking BSEC library to ESP-IDF for BME680

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