int_process.c

该代码采用c5400dsp的汇编语言和c语言实现语音adpcm压缩与解压的程序

/*Bsp0 Receive ISR,To Receive A Data And Transmit A Data */
extern int ser0inbuf[40] ;
extern int ser0outbuf[40] ;
extern int ser0flag;
extern int ser0inwrcnt ;
extern int ser0outrdcnt;
interrupt void rint0_int(void)
{
	volatile int *memap_baseaddr = (volatile int *)0x0 ;/*define the memory map register base address*/
	ser0flag = ser0flag+1;								/*receive a data from bsp0*/
	ser0inwrcnt = (ser0inwrcnt+1)%40;					/*receive buffer write pointer*/
	ser0outrdcnt =(ser0outrdcnt+1)%40;                  /*transmit buffer read pointer*/
	ser0inbuf[ser0inwrcnt] = memap_baseaddr[0x21] ;		/*save the receive data in receive buffer*/
	memap_baseaddr[0x23] = ser0outbuf[ser0outrdcnt] & 0xfffe ;	/*send a data from transmit buffer*/
}		
/*External Int ISR,To Set The int0flag flag*/
extern int int0flag ;
interrupt void int0_int(void)
{
	int0flag = (int0flag+1) ;
}
/*HPI Receive ISR,When A Data Received From The HPI,Set the hpirecflag*/
extern int hpirecflag ;				
interrupt void hpi_int(void)
{
	hpirecflag = hpirecflag + 1;		
}		
/*Timer 0 ISR,Set The timeflag*/
extern int timeflag ;
interrupt void time_int(void)
{
	timeflag = timeflag + 1;
}