Sign in
Search rabbit-semi
Subscribe to rabbit-semi
Ads
Discussion Groups
See Also
Discussion Groups | Rabbit-Semi | RCM2200 data on flash lost
This is a group for folks designing and programming embedded systems using the Rabbit Semiconductor C-programmable microcontroller. Rabbit Semi is a spin-off from Z-World who makes a variety of embedded modules and tools. This group is not affiliated with either Rabbit or Z-World, but is a user forum for sharing ideas, asking questions, flaunting knowledge, and other typical user group stuff. The Rabbit is a powerful uC, supported by a full-featured C-compiler.
RCM2200 data on flash lost - "M. Manca" - Nov 5 1:52:44 2009
I have some ethernet to serial converter made around RCM2200 in the
field from several years now and some of them
are experiencing data lost on flash file system. More precisely there is
a file containing setup data that after a power up (or during a power
down) changes to factory default meaning some data corruption (there is
a check procedure during power up). When the problem arises seems that
it is always impossible to re write data different then defaults so
seems to me that the flash file system works properly but the flash chip
is damaged. The strange thing is that the system writes this file just
one time when the system is installed.
Anyone experienced problems like this?
Best regards,
------------------------------------
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
field from several years now and some of them
are experiencing data lost on flash file system. More precisely there is
a file containing setup data that after a power up (or during a power
down) changes to factory default meaning some data corruption (there is
a check procedure during power up). When the problem arises seems that
it is always impossible to re write data different then defaults so
seems to me that the flash file system works properly but the flash chip
is damaged. The strange thing is that the system writes this file just
one time when the system is installed.
Anyone experienced problems like this?
Best regards,
------------------------------------
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
RE: RCM2200 data on flash lost - "Michael Coop (SL4P)" - Nov 5 2:39:36 2009
100,000 write cycles ?
Perhaps you should detect the failure in software, then move to a new
page/block of flash
,
MC
SL4P
From: r...@yahoogroups.com [mailto:r...@yahoogroups.com] On
Behalf Of M. Manca
Sent: Thursday, 5 November 2009 17:51
To: r...@yahoogroups.com
Subject: [rabbit-semi] RCM2200 data on flash lost
I have some ethernet to serial converter made around RCM2200 in the
field from several years now and some of them
are experiencing data lost on flash file system. More precisely there is
a file containing setup data that after a power up (or during a power
down) changes to factory default meaning some data corruption (there is
a check procedure during power up). When the problem arises seems that
it is always impossible to re write data different then defaults so
seems to me that the flash file system works properly but the flash chip
is damaged. The strange thing is that the system writes this file just
one time when the system is installed.
Anyone experienced problems like this?
Best regards,
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
Re: RCM2200 data on flash lost - "M. Manca" - Nov 5 2:47:22 2009
Michael Coop (SL4P) ha scritto:
>
>
>
>
> 100,000 write cycles ?
>
This is not a problem for me, I need to write the file just 1 time and
then it is open in read only mode.
>
> Perhaps you should detect the failure in software, then move to a new
> page/block of flash
>
But my software writes the file just 1 time, I would investigate if
there is a different reason to explain flash damaging.
May be some sort of electric problem on the power supply side?
>
> ,
>
> *MC*
>
> SL4P
>
>
>
> *From:* r...@yahoogroups.com
> [mailto:r...@yahoogroups.com] *On Behalf Of *M. Manca
> *Sent:* Thursday, 5 November 2009 17:51
> *To:* r...@yahoogroups.com
> *Subject:* [rabbit-semi] RCM2200 data on flash lost
>
>
>
>
>
> I have some ethernet to serial converter made around RCM2200 in the
> field from several years now and some of them
> are experiencing data lost on flash file system. More precisely there is
> a file containing setup data that after a power up (or during a power
> down) changes to factory default meaning some data corruption (there is
> a check procedure during power up). When the problem arises seems that
> it is always impossible to re write data different then defaults so
> seems to me that the flash file system works properly but the flash chip
> is damaged. The strange thing is that the system writes this file just
> one time when the system is installed.
> Anyone experienced problems like this?
> Best regards,
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )
>
>
>
>
> 100,000 write cycles ?
>
This is not a problem for me, I need to write the file just 1 time and
then it is open in read only mode.
>
> Perhaps you should detect the failure in software, then move to a new
> page/block of flash
>
But my software writes the file just 1 time, I would investigate if
there is a different reason to explain flash damaging.
May be some sort of electric problem on the power supply side?
>
> ,
>
> *MC*
>
> SL4P
>
>
>
> *From:* r...@yahoogroups.com
> [mailto:r...@yahoogroups.com] *On Behalf Of *M. Manca
> *Sent:* Thursday, 5 November 2009 17:51
> *To:* r...@yahoogroups.com
> *Subject:* [rabbit-semi] RCM2200 data on flash lost
>
>
>
>
>
> I have some ethernet to serial converter made around RCM2200 in the
> field from several years now and some of them
> are experiencing data lost on flash file system. More precisely there is
> a file containing setup data that after a power up (or during a power
> down) changes to factory default meaning some data corruption (there is
> a check procedure during power up). When the problem arises seems that
> it is always impossible to re write data different then defaults so
> seems to me that the flash file system works properly but the flash chip
> is damaged. The strange thing is that the system writes this file just
> one time when the system is installed.
> Anyone experienced problems like this?
> Best regards,
______________________________
Stellaris® MCU Family: New Parts, New Package, New Price.
(You need to be a member of rabbit-semi -- send a blank email to rabbit-semi-subscribe@yahoogroups.com )