Issue with X-flash writing.

[dmunari9]

Posted on November 18, 2003 at 08:18

Issue with X-flash writing.

[dmunari9]

Posted on November 18, 2003 at 04:07

Hello ST7 users.

I am sure someone will be able to help me.

Last time Katrin was very helpful.

I have debugged an ST7LITE1 with INdart emulator and I have successfuly written some data into x flash memory to be stored.

I have programmed an mcu to make it run alone in my target borad and (surprise) it doesn't write the flash anymore.

I have checked many things (option bytes, clock, ecc.) everything seems ok.

Anyone ?

[jatin]

Posted on November 18, 2003 at 04:45

Please check if the clock source selected in the option bytes is same as in the target board?

[dmunari9]

Posted on November 18, 2003 at 08:18

Hi Jatin, thanks for you interest.

The inDART uses a clock on PB4.

When the application runs alone, I have set the RC OSCILLATOR

I copy here the part of the program which writes the flash.

Greetings from Italy.

XF_PROG MACRO ADDR,DATA

LOCAL Copy_01

LOCAL Copy_ex

sim

clr X

Copy_01:

ld A,(X_code,X)

ld (XProg,X),A

cp X,#$10

jreq Copy_ex

inc X

jp Copy_01

Copy_ex:

;

ld A,#ADDR.h

ld CURRENTH,A

ld A,#ADDR.l

ld CURRENTL,A

ld A,DATA

ld XDATA,A

call XProg

rim

MEND

;*******************************************************************************

; Program entry

;*******************************************************************************

WORDS

segment 'X_rom'

; I valori sono inizializzati a #$ff

; Tempi di attesa

.X_WAITVEL1 DC.B $ff

.X_WAITVEL2 DC.B $ff

.X_WAITVEL3 DC.B $ff

; Periodo odometro

.X_VELTH3H DC.B $ff

.X_VELTH3L DC.B $ff

.X_VELTH2H DC.B $ff

.X_VELTH2L DC.B $ff

.X_VELTH1H DC.B $ff

.X_VELTH1L DC.B $ff

; Soglie abilitate disabilitate

.X_ENABLETH DC.B $ff ;$00

; Flag velocita'

.X_SFVEL DC.B $ff

WORDS

segment 'rom'

X_code:

bset FCSR,#1

ld A,XDATA

ld [CURRENTH.w],A

bset FCSR,#0

xLoop: btjt FCSR,#0,xLoop

ret