Hi,
As part of my internship, I am trying to modify an application and send the output of the application via CoAP. My goal is to modify the CoAP Client sample that comes together with nrf-sdk (v.1.4.2). I am using Ubuntu 20.04 and build/program from terminal by using (west build -b nrf9160dk_nrf9160ns) and (west flash)
I have two versions for Zephyr base. First one is in ~/zephyrproject/zephyr, I followed the instructions on the following link to obtain it (https://docs.zephyrproject.org/latest/getting_started/index.html)
The second one came together with nrf-sdk and is in (~/source_code_directory/ncs/zephyr)
My problem is, the application that I have runs correctly only when I use the first one: i,e., after running "source ~/zephyrproject/zephyr/zephyr-env.sh" from the terminal. For some reason I get errors when I set the Zephyr Base to the one that comes with nrf-sdk, i.e., "source ~/source_code_directory/ncs/zephyr/zephyr-env.sh". Therefore I am trying to use the first one.
However, and this part involves my question, when I try to build the nrf-sdk CoAP Client Sample by setting the Zephyr Base to the first one, I get errors that are exactly in the same form as in: https://devzone.nordicsemi.com/f/nordic-q-a/45543/issue-with-command-line-compilation-of-nrf9160-samples
For simplicity I want to repeat: "warning: attempt to assign the value 'y' to the undefined symbol LTE_LINK_CONTROL". But the same warning appears also for LTE_AUTO_INIT_AND_CONNECT, BSD_LIBRARY, BSD_LIBRARY_TRACE_ENABLED and AT_HOST_LIBRARY. I far as I understand, I need these configurations to start an LTE connection. Let me emphasize that I don't get this error when I set the Zephyr base to (~/source_code_directory/ncs/zephyr) and the CoAP Sample works.
And finally my question: What might be the reason that is causing different behaviors for the two versions of Zephyr bases? And most importantly, is there any way to run the nrf-sdk CoAP Client sample by setting the Zephyr base to ~/zephyrproject/zephyr?
Thanks in advance
