base.s

来自「ＡＶＲ 门锁的程序 包含与模块通讯 密码按键」· S 代码 · 共 63 行

#include <avr/io.h>

//11.0592M Clock 延时均为近似

	.global Delay1uS
Delay1uS:
	//NOP
	NOP
	RET

	.global DelayNuS
DelayNuS:
LoopuS:
	SUBI	R24,0x01//R24-1
	CALL	Delay1uS
	BRNE	LoopuS
	RET

	.global Delay1mS
Delay1mS:
	PUSH	R24

	//Delay 250uS
	LDI	R24,250
LoopuST1:
	SUBI	R24,0x01//R24-1
	CALL	Delay1uS
	BRNE	LoopuST1

	//Delay 250uS
	LDI	R24,250
LoopuST2:
	SUBI	R24,0x01//R24-1
	CALL	Delay1uS
	BRNE	LoopuST2

	//Delay 250uS
	LDI	R24,250
LoopuST3:
	SUBI	R24,0x01//R24-1
	CALL	Delay1uS
	BRNE	LoopuST3

	//Delay 250uS
	LDI	R24,250
LoopuST4:
	SUBI	R24,0x01//R24-1
	CALL	Delay1uS
	BRNE	LoopuST4

	POP	R24
	RET

	.global DelayNmS
DelayNmS:
LoopmS:
	SUBI	R24,0x01//R24-1
	LDS	R25,SREG
	CALL	Delay1mS
	STS	SREG,R25
	BRNE	LoopmS
	RET