featherlib/include/feather/button.h at master · kisom/featherlib · GitHub

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#ifndef __FEATHER_BUTTONS_H

#define __FEATHER_BUTTONS_H

#include <Arduino.h>

#include <stdint.h>

namespace featherlib {

typedef void (*button_callback)();

class Button {

public:

Button(uint8_t pin) : pin(pin),

lastValue(0),

value(0),

lastSample(0),

cb(nullptr)

{

if (pin) {

pinMode(pin, INPUT_PULLUP);

}

};

uint8_t read(); // Return the button's current value.

bool sample(); // Take another reading of the button.

void registerCallback(button_callback);

private:

uint8_t pin; // Which pin is the button on?

uint8_t lastValue; // What was the last sampled value?

uint8_t value; // What is the last known value?

unsigned long lastSample; // When was the last sample taken?

button_callback cb; // What happens when the state changes?

};

} // namespace featherlib

#endif // __FEATHER_BUTTONS_H

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