Frequency LED?

I am looking for a way to manipulate the frequency of blinking of the LED on the device using Cascades.

So far, I am able to access the LED and change its color. I can't find any mention about the frequency in the API documentation. Need a pointer on how to do this?

Thank you

Chris

I created a test project, where you can move the slider to set the frequency of led.

'Start' button starts flashing.

DOWNLOAD:

Test.zip

Test.HPP:

namespace bb { namespace device { class Led; }}class QTimer;

class Test : public QObject
{
    Q_OBJECT
public:
    Test(bb::cascades::Application *app);
    virtual ~Test() {}

    Q_INVOKABLE void blink(int frequency);
    Q_INVOKABLE void stopBlinking();

public slots:
    void onTimer();

protected:
    QTimer *timer_;
    bb::device::Led *led_;
};

Test.cpp:

#include 
#include 

using namespace bb::cascades;
using namespace bb::device;

Test::Test(bb::cascades::Application *app)
: QObject(app)
{
    QmlDocument *qml = QmlDocument::create("asset:///main.qml").parent(this);

    qml->setContextProperty("app", this);
    AbstractPane *root = qml->createRootObject();
    app->setScene(root);

    led_ = new Led(LedColor::Green, this);

    timer_ = new QTimer(this);
    QObject::connect(timer_, SIGNAL(timeout()),
            this, SLOT(onTimer()));
}

void Test::blink(int frequency)
{
    timer_->start(frequency);
    led_->flash();
}

void Test::stopBlinking()
{
    led_->cancel();
    timer_->stop();
}

void Test::onTimer()
{
    led_->cancel();
    led_->flash();
}

Test.Pro:

LIBS += -lbbdevice

bar - descriptor.xml:

    access_led_control

hand. QML:

import bb.cascades 1.0

Page {
    property bool stopped: true
    Container {
        Slider {
            id: frequencySlider
            fromValue: 1000
            toValue: 30
            value: 500
            onValueChanged: {
                if (!stopped)
                    app.blink(frequencySlider.value)
            }
        }
        Label {
            text: 'Frequency: ' + Math.floor(frequencySlider.value) + ' msec'
        }
        Button {
            text: "Start"
            onClicked: {
                app.blink(frequencySlider.value)
                stopped = false
            }
        }
        Button {
            text: "Stop"
            onClicked: {
                app.stopBlinking()
                stopped = true
            }
        }
    }
}

Tags: BlackBerry Developers

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