Texas Instruments TMS320F20x/F24x DSP manual A.3.1 Assembly Code for TMS320F206, Preliminary

Sample Assembly Code to Erase and Reprogram the TMS320F206

PRELIMINARY

A.3 Sample Assembly Code to Erase and Reprogram the TMS320F206

The algorithm files can be used from assembly in a straightforward manner. In general, the algorithms can reside anywhere in program space. However, the algorithms cannot be executed from the flash module that is being modified, and the algorithms must execute with zero wait states. The assembly code and linker command file in this section provide a working example for the 'F206. In this example, the algorithms reside in SARAM, and flash1 is erased and repro- grammed.

A.3.1 Assembly Code for TMS320F206

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*	Filename: ASMEXAMP.ASM	*
*	Description:	*
* This file contains an example of how to erase		*
* and program the TMS320F206 flash from assembly		*
* code using the standard flash algorithm modules.		*
* The example erases one of the 'F206 flash		*
* modules, then programs the first three words.		*
* Since the standard flash algorithms are actually		*
* used to perform the various flash operations,		*
* they must must be combined with this code at		*
*	link time.	*
*		*
*	03/20/98 Updated for inclusion in flash	*
*	technical reference.	*

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.title º**Example of Using 'F2XX Flash Algorithms**º ;**Variables included from flash algorithms.

.include ºsvar20.hº		;Variable declarations
.ref	GCLR	;References clear algo.
.ref	GPGMJ	;References program algo.
.ref	GERS	;References erase algo.
.ref	FLWS	;References Flash±write algo.
;**Parameters used by flash algorithms.
.def	PRG_bufaddr, PRG_paddr
.def	PRG_length, PARMS
.def	SEG_ST,SEG_END,PROTECT

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VARS: .usect ºPRG_dataº,16 ;This is an uninitialized		*
;data section required by		*
;the standard flash algos		*
;for temporary variables.		*
;Pointers to this space		*
;are hardcoded	in SVAR20.H, *
;and variables	are	*
;init'd at run	time.	*

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PARMS: .usect ºPRG_parmº,10 ;This is an uninitialized *

A-32 PRELIMINARY