Liyang HU / Pulsator Featured

Use the hardware PwmOut to pulsate an LED (or something else), with selectable active high/low, customisable intensity function, gamma correction, and number of brightness levels.

Dependents:   RedButton

Pulsator.h

Committer:
huliyang
Date:
2015-04-24
Revision:
0:dda7f6f55dc1
Child:
1:bcddb9898625

File content as of revision 0:dda7f6f55dc1:

#include <mbed.h>
#include <PwmOut.h>

class Pulsator
{
private:
    PwmOut out;
    Ticker ticker;
    float phase_2; // phase / 2

    const float period;
    const bool active_high;
    const float gamma;
    const int levels;

    void step(void);
    void enable(void);
    void disable(void);

public:
    Pulsator(PinName pin = LED1, float period = 1.0, bool active_high = true, float gamma = 2.2, int levels = 32);
    Pulsator& operator =(bool state);
};