isr.asm

spce061单片机的一些程序！C语言和汇编语言都有

//============================================================================//
// 文件名:    ISR.asm
// 描  述：   主要处理中断部分的程序，包括DVR中断、USB模组的外部中断。
// 日  期：   2003/04/03
// 库文件：   NONE
//=============================================================================//

.public _BREAK 
.public _FIQ 
.public _IRQ0 
.public _IRQ1 
.public _IRQ2 
.public _IRQ3 
.public _IRQ4 
.public _IRQ5 
.public _IRQ6 
.public _IRQ7 

.include hardware.inc   
.include dvr.inc

.external _fn_usb_isr
.external _Interrupt_Off
.external _Interrupt_On
.TEXT
_FIQ:    
		PUSH  r1,r5 to [sp];
		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:
		r1=C_FIQ_PWM;
		[P_INT_Clear]=r1;
		POP R1,R5 from[sp];
		reti;
L_FIQ_TimerB:
		[P_INT_Clear]=r1;
		pop r1,r5 from [sp];
	reti;
L_FIQ_TimerA:
		r1=0x0001;
		[P_Watchdog_Clear]=r1;
		call    F_FIQ_Service_SACM_DVR  // for playback
	    r1=0x2000;
		[P_INT_Clear]=r1;
		pop r1,r5 from [sp];
		reti;              
      
/////////////////////////////////////////////////////////////////////////////////////////
// Function: Interrupt Service routine Area                     
// Service for     IRQ1 - IRQ7
// User's IRQ must hook on here                                 
/////////////////////////////////////////////////////////////////////////////////////////        
_BREAK:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------
_IRQ0:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------
_IRQ1:        
		push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti   
// ---------------------------------------------------------------------------
_IRQ2:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------
_IRQ3:        
   push r1,r5 to [sp]		//压栈保护 
   r1=0x0100 	    
   test r1,[P_INT_Ctrl] 	//比较是否为IRQ3_EXT1	 
   jnz  irq3_ext1			//是，则转至对应程序段；
   r1=0x0200 	    
   test r1,[P_INT_Ctrl] 	//否，则比较是否为IRQ3_EXT2
   jnz  irq3_ext2			//是，则转至对应程序段；
 
irq3_key:					//否，则进入键唤醒中断
	r1=0x0080 	     
	[P_INT_Clear]=r1 
    jmp ExitIrq3
irq3_ext2://turn on led		
    r1=0x0200 	     
    [P_INT_Clear]=r1 
    jmp ExitIrq3
irq3_ext1://turn off led
   //int off;
   r1=0x0100 	     
   [P_INT_Clear]=r1 
   int off;
   	r1=0x0001;
   [P_Watchdog_Clear]=r1;
   call _fn_usb_isr//
   int irq,fiq;
ExitIrq3:
   pop r1,r5 from [sp] 
   reti          
// ---------------------------------------------------------------------------
_IRQ4:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti   
// ---------------------------------------------------------------------------
_IRQ5:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------
_IRQ6:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------
_IRQ7:        
        push r1,r4 to [sp] 
        pop r1,r4 from [sp] 
        reti          
// ---------------------------------------------------------------------------