BME280 sensor project won't compile

[Dr. Watson]

Hi,

I've recently bought some ESP32 modules and a Bosch BME280 temperature/humidity/pressure sensor. I want to build a weather station. To start, I wanted to use this project: https://github.com/yanbe/bme280-esp-idf-i2c. However, it won't compile. I'm new to C, but it seems like the definitions in bme280_defs.h are not found, and therefore it can't compile the main.c file. I've contacted the repository maintainer, but he didn't respond. I've included the error messages as an attachment (makelog.txt).

My directory structure looks like this:

Code: Select all

.
├── build [47 entries exceeds filelimit, not opening dir]
├── components
│   └── bme280
│       ├── component.mk
│       └── driver
│           ├── bme280.c
│           ├── bme280_defs.h
│           ├── bme280.h
│           ├── changelog.md
│           ├── README.md
│           └── selftest
│               ├── bme280_selftest.c
│               └── bme280_selftest.h
├── LICENSE
├── main
│   ├── component.mk
│   └── main.c
├── Makefile
├── README.rst
├── sdkconfig
└── sdkconfig.old

The bme280 component.mk file contains the following:

Code: Select all

COMPONENT_ADD_INCLUDEDIRS=./driver
COMPONENT_SRCDIRS=./driver
COMPONENT_OBJS=./driver/bme280.o

(This is the same as in the GitHub repository).
The bme280 driver files (bme280.c, bme280.h, bme280_defs.h) are from the official Bosch directory linked in the GitHub project.
I've also tried an empty component.mk file, and placing the driver bme280.c file directly in the bme280 folder and the two driver .h files in an include subdirectory, to no avail (see makelog2.txt). I would be very grateful if anybody could give me a hint

[Dr. Watson]

I just got a reply from the maintainer. Apperently Bosch changed the driver in June 2017 and broke backwards compatibility. If anyone uses the library, commit cf40d00 from Bosch should work.