I’m glad you solved it. In case you need to build it with Mbed OS 6.4.0 (maybe also with any other Mbed OS 6.X.X revision) add the following to the mbed_app.json
configuration file:
{
"target_overrides": {
"*": {
"platform.callback-nontrivial": true
}
}
}
Otherwise the project will not compile.
Best regards, Zoltan