isr.asm

1 系统简介 与本文档配套的超声波测距模组为 V2.0 版本。 1.1 基本特性与参数指标 超声波传感器谐振频率：40KHz； 模组传感器工作电压：4.5V~9V 模组接口电压：4

.include 	hardware.inc
.include	S480.inc
.include	Resource.inc
.define     P_INT_Ctrl_New	0x702d

.ram
.public _TimeCounter
.var _TimeCounter

.text
.public	_FIQ;
_FIQ:
	PUSH	R1,R5 to [sp];
	R1 = 0x0001;				//清狗
    [P_Watchdog_Clear] = R1;
	R1 = 0x2000;
	test R1,[P_INT_Ctrl];
	jnz L_FIQ_TimerA;
	R1 = 0x0800;
	test R1,[P_INT_Ctrl];
	jnz L_FIQ_TimerB;
L_FIQ_PWM:						//以下两个中断均用于语音
	R1 = C_FIQ_PWM;
	[P_INT_Clear] = R1;
	POP R1,R5 from[sp];
	reti;
L_FIQ_TimerA:
	[P_INT_Clear] = R1;
	call F_FIQ_Service_SACM_S480;
	pop R1,R5 from [sp];
	RETI;						//.......end
L_FIQ_TimerB:
	[P_INT_Clear] = R1;
	pop R1,R5 from [sp];
	RETI;