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 | */ |
/**********************************************************************/ |
| ||
PRELIMINARY |
