[Atmega] LITTLE ENDIAN or BIG ENDIAN 체크

LITTLE ENDIAN or BIG ENDIAN 체크

#include<avr/io.h>
 
int main(void)
{
    volatile int iNum=0x1234;
    volatile unsigned char * ucP = (volatile unsigned char *)&iNum;
     
    DDRD =0xff;
     
    if(*ucP==0x12) // BIG ENDIAN
        PORTD = 0xfe;
    else        // LITTLE ENDIAN
        PORTD = 0xfd;
    return 0;
}