?? delay.h
字號(hào):
/*************************************** * delay.h * * * * ***************************************/static udelay (int usec){ TH0 = 0xFF-(unsigned char)(usec*2 >> 8); TL0 = 0xFF-(unsigned char)(usec*2 & 0xFF); TCON &= ~0x20; while(!(TCON & 0x20));}#define __timeafter (TCON & 0x20)static timeafter(int usec){ TH0 = 0xFF-(unsigned char)(usec*2 >> 8); TL0 = 0xFF-(unsigned char)(usec*2 & 0xFF); TCON &=~0x20;}
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