How to run older release of nRF Connect SDK in nRF Connect Toolchain Manager

[NathanML]

Hi,

I recently installed nRF Connect SDK v1.6.0 through the Toolchain Manager of nRF Connect. Previously v1.5.0 was installed, and was what I have been developing using. See below:

Although I plan on developing in v1.6.0 moving forward, I was hoping I would still be able to develop in v1.5.0, with the understanding that code changes may be different between the two as Zephyr libraries change.

I opened the command prompt via the dropdown next to v1.5.0, but am unable to build using that sdk version. I followed the instructions here in the specific version's sdk nrf folder to no avail. I've confirmed I'm able to build successfully using the command line with the v1.6.0 terminal, but get the following CMake error when attempting to use the same build command with v1.5.0:

As you can see, it seemingly is still trying to build with v1.6.0, not v1.5.0.

Any help would be appreciated!

[Didrik Rokhaug]

Hi,

First, a couple of questions just to make sure that I understand what is going on, and are not missing something:

What is in the ml_beacon folder?

Is ml_beacon_nrf52 a custom board? Where is the board folder?

Do you see the same error if you manually delete the build folder (or specify a different build folder with -d)?

What do you get if you run 'echo %ZEPHYR_BASE%'?

If deleting or changing the build directory doesn't work, you can select the toolchain manually by adding a CMake flag to the build command:
west build ... – -DNCS_TOOLCHAIN_VERSION=1.5.0

Best regards,

Didrik

[NathanML]

Hi Didrik,

Thank you for the quick response! It works now after manually deleting the build directory prior to building. Thanks for your help!