In this video tutorial, we are showing how to use GPIO or General Pupose I/O pins of Beaglebone Black Board. You will learn using available GPIO driver in Embedded Linux. We will use LED connected to GPIO and blink LED. We will write C program for LED blinking.
Topics covered in this video tutorial ...
- Introduction to Beaglebone Black
- GPIO Programming
- LED Interfacing
- C Program
- Build and Run C Program on Beaglebone Black Board
C Program
Include following files using... stdio.h, unistd.h, fcntl.h
#define LOOP 5
int main (void)
{
int i=0,f=0;
// set direction out
f=open("/sys/class/gpio/gpio60/direction",O_RDWR);
write(f,"out",3);
close(f);
f=open("/sys/class/gpio/gpio60/value",O_WRONLY);
// Note - correct i = LOOP, make it i less than or equal to LOOP
for(i=1;i=LOOP;i++)
{
// LED On
write(f,"1",1);
sleep(1);
// LED off;
write(f,"0",1);
sleep(1);
}
close(f);
printf("
LED Blink Program is terminated !!!");
} // end of main
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31 июл 2024
