Question about execution environment of callbacks

[SteveH]

When an EFS-AT callback is invoked in an EFS, is there only one thread of execution present in that EFS at any given time? For example, if a callback is being executed, is main() blocked from running until the callback is completed even though ticks are available for processing by it? And vice verse, will a callback never be invoked while main() is executing?

This is important to know for planning around latency issues in script design and assumptions on access to global variables.

[eSignal_EricL]

Hello Steve,

Callbacks are executed asynchronously.

Eric L.