xtest03_3.c

来自「AT91sam7s 256 B/D example」· C语言 代码 · 共 36 行

/* ========================================================================== */
/*	  Xtest03_3.c : Access to Absolute Address of I/O Register(3)         */
/* ========================================================================== */
/*			  Designed and programmed by Duck-Yong Yoon in 2007.  */

#include "AT91SAM7S256.h"
#include "lib_AT91SAM7S256.h"
#include "OK7S256ads.h"

#define  PIO_SODR	(*(volatile unsigned int *) 0xFFFFF430)
#define  PIO_CODR	(*(volatile unsigned int *) 0xFFFFF434)

int main(void)
{
  MCU_initialize();				// initialize AT91SAM7S256 & kit

  while(1)
    { Beep();					// beep 

      PIO_CODR = 0x00000001;			// PA0=0(LED1 on) 
      Delay_ms(1000);
      PIO_SODR = 0x00000001;			// PA0=1(LED1 off)
      Delay_ms(1000);

      PIO_CODR = 0x00000002;			// PA1=0(LED2 on) 
      Delay_ms(1000);
      PIO_SODR = 0x00000002;			// PA1=1(LED2 off)
      Delay_ms(1000);

      PIO_CODR = 0x00000003;			// PA1=PA0=0(LED2 and LED1 on)
      Delay_ms(1000);
      PIO_SODR = 0x00000003;			// PA1=PA0=1(LED2 and LED1 off)
      Delay_ms(1000);
    }
}