not get GPIO pulse

carter_james

hello everybody i try to
generatea GPIO pulse signal but i dont get any signal an oscilloscope.i use raspberryPi2 als controller
my code

#define PIN RPI_BPLUS_GPIO_J8_11
if (!bcm2835_init())
{
qDebug() << "error during initialisation of library"
}
else

{

    bcm2835_gpio_fsel(PIN, BCM2835_GPIO_FSEL_OUTP) //set pin to output
    bcm2835_gpio_clr(PIN);// set pin to low

     {    for(int i=0; i<5;i++)//5 perioden
                       
                 bcm2835_gpio_write(PIN, HIGH)// pin auf 1
                 bcm2835_delay(500);    //wait 0.5s
                 bcm2835_gpio_write(PIN, LOW);//pin auf 0
                 bcm2835_delay(500);//wait 0.5
     }

}

yeckel

Hi are you getting any error? And are you running the code as root? (sudo ./a.out) Try pasting your code. Examples from http://www.effusiontech.com/how-to-blink-led-in-raspberry-pi-using-c-language.html is working fine.