Groups | Search | Server Info | Keyboard shortcuts | Login | Register [http] [https] [nntp] [nntps]

Groups > comp.arch.embedded > #24526

Re: dsPIC serial number

From Don Y <blockedofcourse@foo.invalid>
Newsgroups comp.arch.embedded
Subject Re: dsPIC serial number
Date 2016-07-03 04:14 -0700
Organization A noiseless patient Spider
Message-ID <nlas2c$3ks$1@dont-email.me> (permalink)
References <nlaqnb$v9d$1@dont-email.me>

Show all headers | View raw

On 7/3/2016 3:51 AM, Syd Rumpo wrote:
> I want to put a serial number into a dsPIC - there's four bytes of user space
> in the flash which would be ideal.
>
> Is there any reasonably easy way of stopping this from being changed when new
> software is programmed using a PicKit programmer?  I know I could read it and
> re-write it, but I want something which moderately tech-savvy customers can do.

I'm unclear of your goal.

Do you want to serialize each device in such a way that a "smart"
user can't alter the serial number, intentionally?  (e.g., to gain
access to features)

Or, do you want "smart" users to be able to update the software and
you just want to HELP protect them from *accidentally* overwriting
the serial number?  (i.e., with the bogus S/N that may be present in those
4 bytes in the "updated image")

Back to comp.arch.embedded | Previous | Next — Previous in thread | Next in thread | Find similar | Unroll thread

Thread

dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-03 11:51 +0100
  Re: dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-03 12:01 +0100
  Re: dsPIC serial number Don Y <blockedofcourse@foo.invalid> - 2016-07-03 04:14 -0700
    Re: dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-03 12:46 +0100
      Re: dsPIC serial number Don Y <blockedofcourse@foo.invalid> - 2016-07-03 05:24 -0700
        Re: dsPIC serial number Don Y <blockedofcourse@foo.invalid> - 2016-07-03 05:28 -0700
          Re: dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-03 16:13 +0100
            Re: dsPIC serial number Don Y <blockedofcourse@foo.invalid> - 2016-07-05 17:35 -0700
              Re: dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-06 11:06 +0100
                Re: dsPIC serial number Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-07-06 13:44 +0300
                Re: dsPIC serial number Syd Rumpo <usenet@nononono.co.uk> - 2016-07-06 13:16 +0100
                Re: dsPIC serial number Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-07-06 16:36 +0300
                Re: dsPIC serial number Richard Damon <Richard@Damon-Family.org> - 2016-07-16 21:50 -0400
  Re: dsPIC serial number Paul Rubin <no.email@nospam.invalid> - 2016-07-03 09:46 -0700
  Re: dsPIC serial number Les Cargill <lcargill99@comcast.com> - 2016-07-03 12:46 -0500
    Re: dsPIC serial number Tauno Voipio <tauno.voipio@notused.fi.invalid> - 2016-07-03 21:04 +0300

csiph-web