functional.h File Reference

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Detailed Description

std::function<> equivalent for low-resource AVRs

functional.h is a minimal, no-dependency implementation of functionals for AVRs, taken from project: functional-avr by winterscar.

Make sure to provide the required platform define before including ustd headers.

Note: if you are only interested in using functionals, it might be better to directly use project functional-avr by winterscar.

An example:

#define __UNO__ 1     // Appropriate platform define required
                      // Note: only __ARDUINO__ is supported.
                      // __ATTINY__ is no longer supported.
                      // All other platforms should use std::function<>
                      // from standard library.
#include <functional.h>
 
#if defined (__ARDUINO__)
typedef ustd::function<void()> T_TASK;
#else // use standard library instead:
typedef std::function<void()> T_TASK;
#endif
 
void task(T_TASK *tsk) {
    tsk();
}
 
class Something {
    Something() {
        auto ft = [=]() { this->callback(); };
        task(ft);
    }
    void callback() {
        // do something
    }
}