To let us get started digging into properly analyzing the code in both the incubator-nuttx and incubator-nuttx-apps repos I spun up a Fossology server and uploaded both git repositories and used the automated monk scanner.
You are welcome to see it for yourself at: https://fossology.brennanashton.com/repo use the username nuttx with no password for read access. I can give accounts to people that want to poke into this more but this account should let you at least have read access. The summary results look like this: incubator-nuttx: Scanner CountConcluded License CountLicense Name 10516 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=BSD-3-Clause> 0 BSD-3-Clause <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 96 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=BSD-2-Clause> 0 BSD-2-Clause <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 79 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=0BSD> 0 0BSD <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 25 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=MIT> 0 MIT <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 6 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=BSD-4-Clause-UC> 0 BSD-4-Clause-UC <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 6 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=BSD-2-Clause-FreeBSD> 0 BSD-2-Clause-FreeBSD <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 3 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=HPND-sell-variant> 0 HPND-sell-variant <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 2 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=Zlib> 0 Zlib <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=X11> 0 X11 <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=HPND> 0 HPND <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=2&lic=BSD-Source-Code> 0 BSD-Source-Code <https://fossology.brennanashton.com/repo/?mod=license&upload=2&folder=2&item=2&show=quick#> incubator-nuttx-apps: Scanner CountConcluded License CountLicense Name 1857 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=BSD-3-Clause> 0 BSD-3-Clause <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 124 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=WebM> 0 WebM <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 38 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=MIT> 0 MIT <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 27 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=BSD-2-Clause> 0 BSD-2-Clause <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 12 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=BSD-4-Clause> 0 BSD-4-Clause <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 3 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=X11> 0 X11 <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=Zlib> 0 Zlib <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=BSD-4-Clause-UC> 0 BSD-4-Clause-UC <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> 1 <https://fossology.brennanashton.com/repo/?mod=license_list_files&item=15086&lic=BSD-2-Clause-FreeBSD> 0 BSD-2-Clause-FreeBSD <https://fossology.brennanashton.com/repo/?mod=license&upload=4&folder=2&item=15086&show=quick#> I hope this starts setting us on the right direction forward. --Brennan