smart_asm_part.s

智能遥控车代码

#include <macros.inc>
#include <ctoasm.inc>

	.global delay_us
	.func delay_us

delay_us:
//	PUSH	r27
	PUSH	r28
//	LDI		r27,	0xFF
	LDI		r28,	0xE4
	
loop:
	DEC		r28
	NOP
	NOP
	NOP
	NOP
	NOP
	CPI		r28,	0x00
	BRNE	loop
	
//	POP		r27
	POP		r28
	
	ret

	.endfunc