?? delay.c
字號(hào):
/*-----------------------------------------------------------------------
延時(shí)函數(shù)
系統(tǒng)時(shí)鐘:8M
-----------------------------------------------------------------------*/
void delay_1us(void) //1us延時(shí)函數(shù)
{
asm("nop");
}
void delay_nus(unsigned int n) //N us延時(shí)函數(shù)
{
unsigned int i=0;
for (i=0;i<n;i++)
delay_1us();
}
void delay_1ms(void) //1ms延時(shí)函數(shù)
{
unsigned int i;
for (i=0;i<1140;i++);
}
void delay_nms(unsigned int n) //N ms延時(shí)函數(shù)
{
unsigned int i=0;
for (i=0;i<n;i++)
delay_1ms();
}
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