Blink LED for 5 seconds with 1Hz rate

[sammey_geek]

hi

i want to toggle LED for 5 seconds like ON and OFF. with 1 hz rate... can anyone give me suggestion..how to do that??

thanks
Sammey

[wysota]

Write code that will be triggered once a second (e.g. using a timer) that toggles the led.

[aamer4yu]

How are you controlling the LED ? Qt cannot do that directly.

For the logic,,

myclass::myclass()
{
    timer.setInterval(1000); // 1Hz = 1 sec
}
 
void startBlinkLED()
{
     timer.start()
     count = 0;
}
 
void onTimerTimeout()
{
    if( count++ > 5)
    {    count = 0;
         timer.stop();
         return;
    }
 
    led->blink();  // Actual API to be called
}

myclass::myclass()
{
    timer.setInterval(1000); // 1Hz = 1 sec
}

void startBlinkLED()
{
     timer.start()
     count = 0;
}

void onTimerTimeout()
{
    if( count++ > 5)
    {    count = 0;
         timer.stop();
         return;
    }

    led->blink();  // Actual API to be called
}

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[sammey_geek]

i work on linux platform
for turning on led system("echo 1 > /sys/class/leds/highbright-led/brightness")
and turning off system("echo 0 > /sys/class/leds/highbright-led/brightness")

anyway tanx for the reply aamer4yu ..i wil make some changes and i will check whether it is working or not...

[andre_teprom]

sammey,


It is unusual perform control of hardware devices at X86 platform, as was implicitly mentioned by aamer4yu.
I presume you are working on some embedded linux platform such as an ARM one.
If the case, take a look on source code examples which is commonly provided at design tool ( hello word / blink led / etc... )


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