main.c

TMS320F2407A的例程

/*******************************************************************************
* Function: main()                                                             *
* File: main.c                                                                 *
* Author: David M. Alter, Texas Instruments Inc.                               *
* DSP: TMS320LF240xA                                                           *
* Language: ANSI C                                                             *
* Description: Example main() for accessing data in program space from C.      *
* Function Prototype: void main(void);                                         *
* Passed Parameters: none                                                      *
* Return Value: none                                                           *
* Notes: none                                                                  *
* History:                                                                     *
*   04/04/02 - original (D. Alter)                                             *
*******************************************************************************/

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#include <stdio.h>                           /* needed for puts() and printf() */
#include "pfunc.h"                           /* program function header file */

#define WDCR (volatile unsigned int *)0x7029 /* WD timer control reg */

extern char string1, string2, string3;
extern int  k;

void main(void)
{
    char tmp1[8];                           /* temporary char array */
    char tmp2[8];                           /* temporary char array */
	int  tmp3;                              /* temporary int */

/* Must disable the watchdog timer on LF240x/240xA devices */
    *WDCR  = 0x00E8;                        /* disable the watchdog timer */

/* Example of using PFUNC_strRead */
	PFUNC_strRead(&string1, tmp1);          /* tmp1 = string #1 */
    printf("The 1st string is: ");
    puts(tmp1);                             /* print the 1st string */

/* Example of using PFUNC_blkRead */
    PFUNC_blkRead((int*)&string2, (int*)tmp2, 8);  /* tmp2 = string #2 */
    printf("The 2nd string is: ");
    puts(tmp2);                             /* print the 2nd string */

/* Example of using PFUNC_strWrite */
	PFUNC_strWrite(&string1, tmp2);         /* overwrite string #1 with tmp2 */

/* Example of using PFUNC_blkWrite */
    PFUNC_blkWrite((int*)&string2, (int*)tmp1, 8); /* overwrite string #2 with tmp1 */

/* Now read back and print both strings for proof */
	PFUNC_strRead(&string1, tmp1);
    printf("The 1st string is now: ");
    puts(tmp1);                             /* print the 1st string */

	PFUNC_strRead(&string2, tmp2);
    printf("The 2nd string is now: ");
    puts(tmp2);                             /* print the 2nd string */

/* Example of using PFUNC_wordRead */
	tmp3 = PFUNC_wordRead(&k);              /* read k */
    printf("k is: 0x%x\n", tmp3);           /* print k */

/* Example of using PFUNC_wordWrite */
	PFUNC_wordWrite(&k, 0x5678);            /* overwrite k with the value 0x5678 */
	tmp3 = PFUNC_wordRead(&k);              /* read k back for proof */
    printf("k is now: 0x%x\n", tmp3);       /* print k */

    while(1);							    /* trap end of program */
}