zephyr-rtos

ZephyrOS: how to add driver module to out of tree project

I haven't found a definitive info on how to add a driver module to out-of-tree Zephyr project, so I will provide the answer by my own.

Solution

  • Changes:

    CMakeLists.txt

    +set(ZEPHYR_EXTRA_MODULES drivers/ololo)
find_package(Zephyr REQUIRED HINTS $ENV{ZEPHYR_BASE})

    prj.conf

    +CONFIG_OLOLO=y

    Kconfig

    No changes

    New files:

    drivers/ololo/CMakeLists.txt

    zephyr_library()
zephyr_library_sources_ifdef(CONFIG_OLOLO ololo.c)

    drivers/ololo/Kconfig

    menuconfig OLOLO
        bool "Ololo driver"
        default y
        select BLAH
        depends on MEH
        help
          Enable support for ololo driver

if OLOLO

module = OLOLO
module-str = ololo
source "subsys/logging/Kconfig.template.log_config"

endif

    drivers/ololo/ololo.c

    /* Code goes here */

    drivers/ololo/zephyr/module.yml

    build:
  cmake: .
  kconfig: Kconfig