isr.asm

使用凌阳61单片机开发的具有语音播报功能的数字电压表源代码

.include hardware.inc

.public	_FIQ;

.external _BSR_FIQ_Routine
.external F_FIQ_Service_SACM_A2000

.text
_FIQ:
	push R1,R5 to [sp];			// 寄存器压栈保护
	R1 = C_FIQ_TMA;
	test R1,[P_INT_Ctrl];       //是FIQ_TimerA中断？
	jnz L_FIQ_TimerA;
	R1 = C_FIQ_TMB;
	test R1,[P_INT_Ctrl];       //是FIQ_TimerB中断？
	jnz L_FIQ_TimerB;
L_FIQ_PWM:                        //FIQ_PWM中断服务程序
    R1=C_FIQ_PWM;
    [P_INT_Clear]=R1;            //清中断标志位
    pop R1,R5 from [sp];
	reti;
L_FIQ_TimerA:                       //FIQ_TimerA中断服务程序
    [P_INT_Clear] = R1;
    call F_FIQ_Service_SACM_A2000;	//调用库函数
    pop R1,R5 from [sp];
	reti;
L_FIQ_TimerB:                       //FIQ_TimerB中断服务程序
    [P_INT_Clear] = R1;
    pop R1,R5 from [sp];
	reti;