ext_intf.h

dsp28335例程

#define	  SetData	GpioDataRegs.GPADAT.bit.GPIO20 = 1
#define	  ClrData   GpioDataRegs.GPADAT.bit.GPIO20 = 0
#define	  SetClk	GpioDataRegs.GPADAT.bit.GPIO22 = 1
#define	  ClrClk	GpioDataRegs.GPADAT.bit.GPIO22 = 0

#define	  LedReg	(*((volatile  Uint16 *)0x41FF))
#define   SysReg    (*((volatile  Uint16 *)0x42FF))    
#define   KeyReg    (*((volatile  Uint16 *)0x44FF))
    
#define	  K1		0xFD
#define	  K2		0xFE
#define	  K3		0xF7
#define	  K4		0xFB
#define	  K5		0xEF
#define	  K6		0xDF
#define	  K7		0xBF
#define	  K8		0x7F
			
void	KeyAck(void);

Uint16	ScanKey(void);
void	KeyFunction(Uint16	Temp);