dac.h

来自「DSP2407控制程序」· C头文件 代码 · 共 52 行

/*
   Offchip DAC	test include file for EVM320LF2407

   This test requires a loopback connector

   filename:    dac.h
   original:	02/26/1997   by: mls
   last update: 02/18/2000   by: rrp for 2407
*/

#define MIN_DAC_VAL    0x0000
#define MAX_DAC_VAL    0x1000       /* 12 bit, 0-4095 */

/*
  Write Only
*/
#define DAC0	  0	    /* 1st digital to analog converter	*/
#define DAC1	  1	    /* 2nd digital to analog converter	*/
#define DAC2	  2	    /* 3rd digital to analog converter	*/
#define DAC3	  3	    /* 4th digital to analog converter	*/
#define DAC_XFER  4	    /* transfer data */

/*
  Macro Expansion Declarations
*/
#define _DAC_BASE  00000h

/*
  Write Only
*/
#define _DAC0     _DAC_BASE+0		    /* 1st digital to analog converter	*/
#define _DAC1     _DAC_BASE+1		    /* 2nd digital to analog converter	*/
#define _DAC2     _DAC_BASE+2		    /* 3rd digital to analog converter	*/
#define _DAC3     _DAC_BASE+3		    /* 4th digital to analog converter	*/
#define _DAC_XFER _DAC_BASE+4         /* transfer data */

/*
  Macro definitions
*/

#define STR(x) #x

#define OUTMAC(address,data)  \
 asm("        LDPK    _"STR(data));  \
 asm("        OUT     _"STR(data) "," STR(address))

#define INMAC(address,data)   \
 asm("        LDPK    _"STR(data));  \
 asm("        IN      _"STR(data) "," STR(address))