- Delay 함수 어셈블리어 16Mhz

// 딜레이
void Delay_us_Asm(unsigned int time_us)  /* time delay for us */
{ 
    register unsigned int i;
    
    for(i = 0; i < time_us; i++)   // 4 cycle +
    { 
        asm volatile(" PUSH  R0 ");  // 2 cycle +
        asm volatile(" POP   R0 ");  // 2 cycle +
        asm volatile(" PUSH  R0 ");  // 2 cycle +
        asm volatile(" POP   R0 ");  // 2 cycle +
        asm volatile(" PUSH  R0 ");  // 2 cycle +
        asm volatile(" POP   R0 ");  // 2 cycle = 16 cycle = 1 us for 16MHz
    }
}
 
void Delay_ms_Asm(unsigned int time_ms)  /* time delay for ms */
{ 
    register unsigned int i;
 
    for(i = 0; i < time_ms; i++)    
    { 
        Delay_us_Asm(250);
        Delay_us_Asm(250);
        Delay_us_Asm(250);
        Delay_us_Asm(250);
    }
}