sci2407.h

dsp2407的一个测试程序

/*--------------------------------------------------------*/
/*  WQ21ST SOFTWARE	STUDIO.			                  	  */
/*--------------------------------------------------------*/
/*
 * Onchip UART test include file
 *
 * This test requires a loopback connector
 *
 * filename:	uart1.h
 * original:	08/20/2001     by: WQ
 * last update: 08/28/2001     by: WQ
 */


/*
 * Baud Rate Calculations/Definitions
 */

/* #define BAUD_9600 0x0103 */

#define BAUD_9600    383
				  /* 29.4912 MHz SYSCLK 	*/
				  /* baud = 29,491,200 /[383 + 1] * 8	*/
				  /* baud = 29,491,200 / 384 * 8	*/
				  /* baud = 29,491,200 / 3072		*/
				  /* baud = 9600.000			*/
				  /* % error = [9600-9600] /9600	*/
				  /* % error = 0.0			*/
				  /*----------for reference ------------*/
				  /* 20 MHz	= 20 MHz SYSCLK 	*/
				  /* baud = 20,000,000 /[259 + 1] * 8	*/
				  /* baud = 20,000,000 / 260 * 8	*/
				  /* baud = 20,000,000 / 2080		*/
                                  /* baud = 9615.384                    */
                                  /* % error = [9615-9600] /9600        */
                                  /* % error = 15 / 9600                */
                                  /* % error = 0.0015625                */


/********************************************************************/
/*  Serial Communications Interface Module for C24X,243,2407	    */
/********************************************************************/
struct sci
{
  unsigned int  ccr;              /* 0x7050 in data space */
  unsigned int  ctl1;             /* 0x7051 in data space */
  unsigned int  baud_hi;          /* 0x7052 in data space */
  unsigned int  baud_lo;          /* 0x7053 in data space */
  unsigned int  ctl2;             /* 0x7054 in data space */
  unsigned int  rxst;             /* 0x7055 in data space */
  unsigned int  rxemu;            /* 0x7056 in data space */
  unsigned int  rxbuf;            /* 0x7057 in data space */
  unsigned int  res1;             /* 0x7058 in data space */
  unsigned int  txbuf;            /* 0x7059 in data space */
  unsigned int  res2;             /* 0x705a in data space */
  unsigned int  res3;             /* 0x705b in data space */
  unsigned int  res4;             /* 0x705c in data space */
  unsigned int	res5;		  /* 0x705d in data space */
  unsigned int	res6;		  /* 0x705e in data space */
  unsigned int  pri;              /* 0x705f in data space */
};

/*
   This module defines the bit positions in various sci registers. For other
   registers more definitions are needed.
*/

/*
  SCInCCR
*/
#define STOP_BITS    0x80
#define PARITY       0x40
#define PARITY_EN    0x20
#define LOOP_BACK    0x10
#define ADDR_IDLE    0x08
#define SCI_CHAR2    0x04
#define SCI_CHAR1    0x02
#define SCI_CHAR0    0x01

/*
  SCInCTL1
*/
#define CRL1_RES1    0x80
#define RXERR        0x40
#define SW_RESET     0x20
#define CRL1_RES2    0x10
#define TXWAKE       0x08
#define SLEEP        0x04
#define TX_ENA       0x02
#define RX_ENA       0x01
/*
  SCInCTL2
*/
#define TX_RDY	     0x80
#define TX_EMPTY     0x40
#define CRL2_RES3    0x20
#define CRL2_RES2    0x10
#define CRL2_RES1    0x08
#define CRL2_RES0    0x04
#define RX_INT_EN    0x02
#define TX_INT_EN    0x01
/*
  SCInRXST
*/
#define RXERROR      0x80
#define RXRDY        0x40
#define BRKDT        0x20
#define FE           0x10
#define OE           0x08
#define PE           0x04
#define RXWAKE       0x02
#define RXST_RES1    0x01



/*
  SCInPRI
*/
#define PRI_RES0        0x80
#define PRI_TXPRI       0x40
#define PRI_RXPRI       0x20
#define PRI_SOFT	0x10
#define PRI_FREE	0x08
#define PRI_RES2        0x04
#define PRI_RES3        0x02
#define PRI_RES4        0x01


/********************************************************************/
/*  Define pointers to memory mapped peripherals                    */
/********************************************************************/
#define SCI  ((volatile struct sci *)  0x07050)