When exactly is a esp-now receiver callback called. ESP NOW

Using Arduino Programming Questions
1

I'm currently trying to use esp-now for communication between two esp32. According to the esp-now documentation, the receiver calls the callback function as soon as it receives data, but does this mean that the callback can be called during the esp32 main loop? Or does esp-now check whether data has been sent at the end of the loop?

2

That's kind of the point of the callback function paradigm. You don't know when it will happen, nor do you need to.

3

At any time when data are ready.

4

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