ActivityLed.hxx

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#ifndef _UTILS_ACTIVITYLED_HXX_
#define _UTILS_ACTIVITYLED_HXX_
 
#include "executor/StateFlow.hxx"
#include "os/Gpio.hxx"
 
class ActivityLed : private ::Timer
{
public:
    ActivityLed(
        Service *service, const Gpio *pin, long long period = MSEC_TO_NSEC(33))
        : ::Timer(service->executor()->active_timers())
        , gpio_(pin)
    {
        start(period);
    }
 
    void activity()
    {
        triggerCount_++;
    }
 
private:
    long long timeout() override
    {
        if (triggerCount_)
        {
            gpio_->write(true);
            triggerCount_ = 0;
        }
        else
        {
            gpio_->write(false);
        }
        return RESTART;
    }
 
    const Gpio *gpio_;
    unsigned triggerCount_ {0};
};
 
#endif // _UTILS_ACTIVITYLED_HXX_