avr/blink/helloworld2.c

   1 #include <avr/io.h>
   2 #include <util/delay.h>
   3
   4 //#include <compat/deprecated.h>
   5 /*
   6 variable = PINx;  // Read a byte from a port, replace x with the port number
   7 PORTx = variable; //Write a byte to a port
   8 PORTx |= 1<<pin_number;  // Set a pin in a port
   9 PORTx &= ~(1<<pin_number); // Clear a pin in a port
  10 */
  11
  12 void delay(unsigned int ms) {
  13   unsigned int i,j;
  14   for ( j=0; j<1000; j++)
  15     for ( i=0; i<ms; i++);
  16 }
  17
  18 int main (void){
  19
  20   //sbi(DDRD,PD5); /*enable port 5 for output*/
  21         DDRD |= 1<<5;
  22
  23   while (1) {
  24                 //cbi (PORTD, PD5);
  25                 PORTD &= ~(1<<5);
  26                 delay (500);
  27                 //sbi (PORTD, PD5);
  28                 PORTD |= 1<<5;
  29                 delay (500);
  30   }
  31
  32   return 0;
  33 }