while loop for led blinking not working

RE: while loop for led blinking not working

MARTIN FR — Thu, 12 May 2016 15:45:22 GMT

the main reason for this question i have explained clearly above but once again to create (PWM pulses) produce different sounds on the piezo buzzer with changing the delay

RE: while loop for led blinking not working

RK — Thu, 12 May 2016 15:26:30 GMT

Is that really a serious question? 5 toggles followed by one on is is On-Off-On-Off-On-On which is 3 flashes in total.

This really has nothing whatsoever to do with Nordic either.

RE: while loop for led blinking not working

Jorge — Thu, 12 May 2016 14:02:51 GMT

using toggle if you want it to turn on 5 times you need to set your while to i<10. you only get 3 times because he starts off -> on -> off ->on ->off ->on! five transitions = to 3 times led on.

PS - when you edit your question/answer, if you edit some minor things check the box "minor edit" below the save. this way I only get one email, and not a bunch ;)

RE: while loop for led blinking not working

MARTIN FR — Thu, 12 May 2016 13:53:44 GMT

hello i just tested the same program for toggling the led for five times but the LED turnON and OFF only for three times but as per my condition it should toggle for five times right but what is wrong in my toggling logic

    static int i=0;             
    while(i<5)
    { 
        nrf_gpio_pin_toggle(LED_1); 
        nrf_delay_ms(500);    
        i++;
    }
    nrf_gpio_pin_set(LED_1);
}

RE: while loop for led blinking not working

MARTIN FR — Thu, 12 May 2016 13:49:33 GMT

Thank you so much

RE: while loop for led blinking not working

Jorge — Thu, 12 May 2016 13:45:12 GMT

Now it's working because now you clear(turn off the led) the pin, wait 50ms, set (turn on the led) the pin, wait 50 ms and clear the pin again. This way the led is off 50ms, and on 50ms, five times.

Before you were clearing the pin, wait 50ms, set the pin and clear the pin again. This way your led is off 50ms, and on just a cycle of the program that is to fast for you to see.

Hope this helped.

RE: while loop for led blinking not working

MARTIN FR — Thu, 12 May 2016 13:34:30 GMT

Thank you very much its working but could you please tell me the brief answer for the my question what is wrong on my program why it is working only if i add two delays? can you please give me some explanantion

RE: while loop for led blinking not working

Jorge — Thu, 12 May 2016 13:20:32 GMT

So your LED stays turned on or off? If it is off try to put another delay after the nrf_gpio_pin_set(LED_1). Maybe it is doing what you want, but is too fast for you to see.