pf_config.c

来自「使用Usb cy7c68013与DSP通信」· C语言 代码 · 共 25 行

//pf1  usb epx empty flag,pf2 usb epx full flag; pf3,programmable flag not used here
#include <cdefBF533.h>	



void Init_PF(void)
{
 	*pFIO_INEN|=0x001e;   		//enable pf1,pf2,pf3,pf4 flag
	*pFIO_DIR|=0x0010;
	*pFIO_DIR&=0xfff1;			//direction pf1,pf2,pf3 in pf4out 
	*pFIO_FLAG_C=0x0004;         //clear epx full flag pf2
	*pFIO_POLAR= 0x0000;
	*pFIO_MASKA_D=0x0002;       //enable PF1 interrupt
 
/*    *pFIO_INEN|=0x011e;   		//enable pf1,pf2,pf3,pf4 flag
	*pFIO_DIR|=0x0010;
	*pFIO_DIR&=0xfef1;			//direction pf1,pf2,pf3 in pf4out 
	*pFIO_FLAG_C=0x0004;         //clear epx full flag pf2
	*pFIO_POLAR= 0x0100;
//	*pFIO_MASKA_D=0x0102;       //enable PF1 interrupt
	*pFIO_MASKA_S=0x0100;
	*pFIO_BOTH=0x0100;  //enable pf8 interrupt
	*/
}