Texas Instruments TMS320F20x/F24x DSP A.6.2 Linker Command File for TMS320F240 Sample C Code

Using the Algorithms With C Code to Erase and Reprogram the 'F240

PRELIMINARY

extern int	erase();		/* Declare external func for flash erase. */
extern int	program();		/* Declare external func for flash programming */
extern c240init();		/* Declare external func for C240 register init'l'n */
extern wdtoff();		/* Declare external func for wdt disable */
main()
{
int *a;
asm(º	CLRC CNF º);		/* map B0 to data space */
c240init();			/* initialize key '240 registers */
wdtoff();			/* disable WD timer (works when VCCP=5v) */

if (erase(0xff00,0x0000,0x3fff))

{ /*Flash is erased, now let's program it.*/

/* Init program buffer. */

a=(int *)0x200; /*Use last 128 words of B1 DARAM for data buffer*/ a[0]=0x7A80;

a[1]=0x0FDF;

a[2]=0x7A80;

/*Program the flash from the buffer*/ if (program(0xff00,0x200,0x0000,0x3))

{/*Flash programmed ok.*/ while(1){} /*Spin here forever*/

}

else

{ /*Flash fails programming, EXIT*/ while(1){} /*Spin here forever*/

}

}

else

{/*Flash fails erase, EXIT*/ while(1){} /*Spin here forever*/

}

}

A.6.2 Linker Command File for TMS320F240 Sample C Code

/**********************************************************************/
/* Filename: F240_EXT.CMD			*/
/*	Description: Linker command file for 'F240 example of on±chip flash		*/
/*	programming from C±code. This command file links the		*/
/*	example to addr 0x8000 of the offchip SRAM, so that		*/
/*	the debugger can be used to set breakpoints.		*/
/*	Notes:		*/
/*	1.	The object modules for the standard flash algos	*/
/*		are expected to be in a subdirectory (ALGOS) of	*/
/*		the path of this file.	*/
/**********************************************************************/
/*	Rev1.0	03/98 JGC	*/
/**********************************************************************/

A-48 PRELIMINARY