Zachary J. Fields

Yes. I'd be happy to. I'm testing now, so it won't be a problem.

```arduino-cli compile --verbose --warnings=all --build-property "build.extra_flags=-Wno-implicit-fallthrough -Wno-psabi -Wno-deprecated-copy -Wno-missing-field-initializers -Wno-delete-non-virtual-dtor -Wno-sign-compare -Og -g" --fqbn arduino:mbed_opta:opta ```

```arduino-cli compile --verbose --warnings=all --build-property "build.extra_flags=-Wno-implicit-fallthrough -Wno-psabi -Wno-deprecated-copy -Wno-missing-field-initializers -Wno-vla -Wno-delete-non-virtual-dtor -Wno-sign-compare -Og -g" --fqbn arduino:mbed_opta:opta ```

Is this a "compile only" test? As in it "passes" so long as it compiles to ensure the integrity of your API?

We would absolutely appreciate a PR! That would give us something to wrap our minds around, and get processing up and running once more.

**WORKAROUND:** Add the following parameter to the compile command via the Arduino CLI. ``` --build-property "compiler.cpp.extra_flags=-DMBED_CONF_NORDIC_NRF_LF_CLOCK_SRC=NRF_LF_SRC_XTAL" ```