xtest03_5.c

AT91sam7s 256 B/D example

/* ========================================================================== */
/*	      Xtest03_5.c : Test Time-Delay Function by Software	      */
/* ========================================================================== */
/*			  Designed and programmed by Duck-Yong Yoon in 2007.  */

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

int main(void)
{ unsigned int i;

  MCU_initialize();				// initialize AT91SAM7S256 & kit
  Delay_ms(50);					// wait for system stabilization
  LCD_initialize();				// initialize text LCD module

  LCD_string(0x80, " S/W Time Delay ");		// display title

  LED_off(LED2|LED1);				// LED2~LED1 off

  while(1)
    { LCD_string(0xC0, " 1us delay test ");	// output pulse by 1us delay
      Beep();
      for(i=0; i<5000000; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_1us();
          LED_off(LED2);			// LED2 off
          Delay_1us();
        }

      LCD_string(0xC0, " 10us delay test");	// output pulse by 10us delay
      Beep();
      for(i=0; i<500000; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_us(10);
          LED_off(LED2);			// LED2 off
          Delay_us(10);
        }

      LCD_string(0xC0, "100us delay test");	// output pulse by 100us delay
      Beep();
      for(i=0; i<50000; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_us(100);
          LED_off(LED2);			// LED2 off
          Delay_us(100);
        }

      LCD_string(0xC0, "500us delay test");	// output pulse by 500us delay
      Beep();
      for(i=0; i<10000; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_us(500);
          LED_off(LED2);			// LED2 off
          Delay_us(500);
        }

      LCD_string(0xC0, " 10ms delay test");	// output pulse by 10ms delay
      Beep();
      for(i=0; i<500; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_ms(10);
          LED_off(LED2);			// LED2 off
          Delay_ms(10);
        }

      LCD_string(0xC0, "100ms delay test");	// output pulse by 100ms delay
      Beep();
      for(i=0; i<50; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_ms(100);
          LED_off(LED2);			// LED2 off
          Delay_ms(100);
        }

      LCD_string(0xC0, "500ms delay test");	// output pulse by 500ms delay
      Beep();
      for(i=0; i<10; i++)
        { LED_on(LED2);				// LED2 on 
          Delay_ms(500);
          LED_off(LED2);			// LED2 off
          Delay_ms(500);
        }
    }
}