ADS LED On/Off 양태영

#include "AT91SAM7S256.h"

#include "LED.h"

#define PICNT 20

void PIT_Init(void);

void ISR_System(void);

int main()

{

LED_Init();

LED_On();

// PIT_Init();

while (1)

{

}

return 0;

}

void PIT_Init(void)

{

AT91C_AIC_SVR[AT91C_ID_SYS] = (volatile unsigned int)ISR_System;

*AT91C_AIC_IECR = (1<<AT91C_ID_SYS);

*AT91C_PITC_PIMR = AT91C_PITC_PITEN | AT91C_PITC_PITIEN | 0xF4240;

}

//Interrupt Service Routine

void ISR_System(void)

{

if(*AT91C_PITC_PISR != 0)

{

if(0 == ((*AT91C_PITC_PIVR>>PICNT) % 3))

{

LED_Toggle();

}

}

}