ext_inf.h

dsp 2812的例子代码,有对各种外设的操作

#define SPCR10_VAL     0x0000
#define SPCR20_VAL     0x0220
//2 words per frame
#define RCR10_VAL      0x0140
#define RCR20_VAL      0x04
//2 words per frame
#define XCR10_VAL      0x0140
#define XCR20_VAL      0x04
#define PCR0_VAL       0x01

#define   VOL1     0x81
#define   VOL2     0x82

#define   L_LINE_VOLUME        0x00
#define   R_LINE_VOLUME        0x01
#define   L_HEADPHONE_VOLUME   0x02
#define   R_HEADPHONE_VOLUME   0x03
#define   A_AUDIO_PATH         0x04
#define   D_AUDIO_PATH         0x05
#define   POWER_CON            0x06
#define   D_AUDIO_INTERFACE    0x07
#define   SAMPLE_RATE          0x08
#define   D_INTERFACE_ACT      0x09
#define   RESET                0x0f

#define	  SetData			GpioDataRegs.GPFDAT.bit.GPIOF0 = 1
#define	  ClrData   		GpioDataRegs.GPFDAT.bit.GPIOF0 = 0
#define	  SetClk			GpioDataRegs.GPFDAT.bit.GPIOF2 = 1
#define	  ClrClk			GpioDataRegs.GPFDAT.bit.GPIOF2 = 0
#define	  LedReg		    (*((volatile  unsigned  int *)0x23FF))
#define	  Led8Reg		  	(*((volatile  unsigned  int *)0x25FF)) 


#define  Set485OE		 0x20
#define  Clr485OE		 0xDF
#define	 Set8019RST		 0x10
#define	 Clr8019RST		 0xEF
#define  SetSPICS		 0x08 
#define  ClrSPICS		 0xF7 
#define	 SetAICCS		 0x04  
#define  ClrAICCS		 0xFB 	
#define  SetSIDIN		 0x02  
#define	 ClrSIDIN		 0xFD  
#define  SetSCLK		 0x01  
#define  ClrSCLK		 0xFE  


extern	void	delay(Uint32	k);
extern	void	InitAic23(void);
extern	void	WriteAic23(Uint16	addr,	Uint16	dat);
interrupt	void	ISRMcbspSend(void);

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