I have the following:
- NRF52840
- BG96 modem
- NCS 1.5.1
- Zephyr v2.4.99-ncs2
When I start the firmware, it will first bootstrap followed by leshan server registration.
In my prj.conf I have:
CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME=900
But when I look at the tcpdump I see lt=20.
I also checked with grep:
grep -R CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME * build_nrf52840_orbitz/zephyr/include/generated/autoconf.h:#define CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME 900 Binary file build_nrf52840/zephyr/zephyr_prebuilt.elf matches build_nrf52840/zephyr/zephyr.lst: lifetime[index] = CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME; build_nrf52840/zephyr/zephyr.lst: new_lifetime = CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME; build_nrf52840/zephyr/zephyr.lst: new_lifetime = CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME; build_nrf52840/zephyr/.config.old:CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME=900 build_nrf52840/zephyr/.config:CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME=900 build_nrf52840/zephyr/misc/generated/configs.c:GEN_ABSOLUTE_SYM(CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME, 900); Binary file build_nrf52840/zephyr/zephyr.elf matches Binary file build_nrf52840/zephyr/libzephyr.a matches Binary file build_nrf52840/zephyr/CMakeFiles/zephyr.dir/misc/generated/configs.c.obj matches prj.conf:CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME=900
Somehow this setting is being overruled.
There's no mention of overrule in the documentation:
https://docs.zephyrproject.org/1.14.0/reference/kconfig/CONFIG_LWM2M_ENGINE_DEFAULT_LIFETIME.html
Also according to the documentation, the default is 30.
Where does 20 come from? and how do I change my project to use lifetime 900?
