isr.asm

来自「凌阳单片机机上实现DS18B20测温的程序」· 汇编 代码 · 共 34 行

//========================================================
//	文件名称：	isr.asm
//	功能描述：	显示数据
//	维护记录：	2005-09-12	v1.0
//========================================================

.INCLUDE hardware.inc
.INCLUDE Dig.inc

.TEXT
.PUBLIC _IRQ4
_IRQ4:
	push r1,r5 to [sp]
	r1 = C_IRQ4_1KHz
	test r1,[P_INT_Ctrl]
	jnz ?L_IRQ4_1KHz
	r1 = C_IRQ4_2KHz
	test r1,[P_INT_Ctrl]
	jnz ?L_IRQ4_2KHz
?L_IRQ4_4KHz:
	call F_DIG_Drive
	r1 = C_IRQ4_4KHz
	[P_INT_Clear] = r1
	pop r1,r5 from [sp]
	reti
?L_IRQ4_2KHz:
	[P_INT_Clear] = r1
	pop r1,r5 from [sp]
	reti
?L_IRQ4_1KHz:
	[P_INT_Clear] = r1
	pop r1,r5 from [sp]
	reti