www.pudn.com > LineIN_Filter.rar > ISR.c

//*******************************************************************// 
//Interrupt Service Routine For C language 
//*******************************************************************// 
extern	unsigned	int	g_Flag_Status; 
extern	unsigned	long	int	g_ulAddr; 
 
extern	void	SP_SIOSendAWord(unsigned long int Addr,unsigned int data); 
extern	unsigned	int		SP_SIOReadAWord(unsigned long int Addr); 
extern	unsigned	int		Fir(); 
 
#define		M_RECORD		1 
#define		M_STOP			2 
#define		M_PLAY			4 
 
 
#define		M_MEMORY_SIZE		0xffff			//4096µÄ´æ´¢¿Õ¼ä£¨byte£© 
#define		P_ADC_MUX_Data		0x702c 
 
#include	"SPCE061V004.H" 
void BREAK(void) __attribute__ ((ISR)); 
void BREAK(void) 
{ 
} 
void FIQ(void) __attribute__ ((ISR)); 
void FIQ(void) 
{ 
	unsigned	int	uiData; 
	long int	lFilterOut; 
 
	if(g_Flag_Status&M_RECORD)						//RECORD 
	{ 
		if(g_ulAddr>=M_MEMORY_SIZE) 
		{ 
			g_ulAddr=0; 
			g_Flag_Status=M_STOP; 
		} 
		else 
		{ 
			lFilterOut=Fir(); 
			uiData = lFilterOut; 
			SP_SIOSendAWord(g_ulAddr,uiData); 
			g_ulAddr+=2; 
		}		 
	} 
	else if(g_Flag_Status&M_PLAY)					//PLAY 
	{ 
		uiData=SP_SIOReadAWord(g_ulAddr); 
		*P_DAC1 = uiData; 
		g_ulAddr+=2; 
		if(g_ulAddr>=M_MEMORY_SIZE) 
		{ 
			g_ulAddr=0; 
			g_Flag_Status=M_STOP; 
		} 
	}	 
	 
 	*P_INT_Clear = 0x2000;        	//ÇåÖÐ¶Ï 
} 
	 
void IRQ0(void) __attribute__ ((ISR)); 
void IRQ0(void) 
{ 
} 
void IRQ1(void) __attribute__ ((ISR)); 
void IRQ1(void) 
{ 
} 
void IRQ2(void) __attribute__ ((ISR)); 
void IRQ2(void) 
{ 
} 
void IRQ3(void) __attribute__ ((ISR)); 
void IRQ3(void) 
{ 
} 
void IRQ4(void) __attribute__ ((ISR)); 
void IRQ4(void) 
{ 
} 
void IRQ5(void) __attribute__ ((ISR)); 
void IRQ5(void) 
{ 
} 
void IRQ6(void) __attribute__ ((ISR)); 
void IRQ6(void) 
{ 
} 
void IRQ7(void) __attribute__ ((ISR)); 
void IRQ7(void) 
{ 
}