ARM고윤석

주소

#include "AT91SAM7S256.h"

int main()

{

*AT91C_PMC_PCER= (1<<AT91C_ID_PIOA);

*AT91C_PIOA_PDR = 0xFFFFFFFF; // Port Disable PA2~31

*AT91C_PIOA_PER= AT91C_PIO_PA0 | AT91C_PIO_PA1; // Port Enable PA0~1

*AT91C_PIOA_OER= AT91C_PIO_PA1; // PA1 is Output

*AT91C_PIOA_ODR = AT91C_PIO_PA0; // PA0 is Input

while (1)

{

if((AT91C_BASE_PIOA->PIO_PDSR & AT91C_PIO_PA0)) // if PA0 were Hi

*AT91C_PIOA_SODR= AT91C_PIO_PA1; // then PA1 out is Hi

else // if PA0 were Lo

*AT91C_PIOA_CODR = AT91C_PIO_PA1; // then PA1 out is Lo

}

return 0;

}

구조체

#include "AT91SAM7S256.h"

int main()

{

AT91C_BASE_PMC->PMC_PCER = (1 << AT91C_ID_PIOA);

   

   AT91C_BASE_PIOA->PIO_PDR = 0xFFFFFFFF;

   AT91C_BASE_PIOA->PIO_PER = AT91C_PIO_PA0 | AT91C_PIO_PA1;

   AT91C_BASE_PIOA->PIO_OER = AT91C_PIO_PA1;

   AT91C_BASE_PIOA->PIO_ODR = AT91C_PIO_PA0;

while (1)

{

if((AT91C_BASE_PIOA->PIO_PDSR & AT91C_PIO_PA0)) // if PA0 were Hi

 AT91C_BASE_PIOA->PIO_SODR = AT91C_PIO_PA1;

else // if PA0 were Lo

AT91C_BASE_PIOA->PIO_CODR = AT91C_PIO_PA1;

}

return 0;

}