Re: [OpenOCD-user] Write to user registers on luminary parts

[Marlon S. <mar...@gm...>]

Sean, thanks for the reply.  That sounds right to me, and it looks like
I can use mww to write to those registers in the correct sequence.  I'll
give it a try.

Marlon


On Thu, 2013-03-07 at 21:26 -0600, Sean de la Haye wrote:
> Marlon,
> 
> 
> 
> There is a procedure in the datasheet for writing the user regs.   For
> the LM3S9B96, check out section 6.2.3.6 in the latest datasheet.  They
> are accessed through regular registers (0x400FE1E0 is in the Sysctl
> address space) and the values are committed to a region of
> non-volatile storage with an operation similar to writing flash.
> 
> 
> You can also use the FlashUserSet and FlashUserSave functions as
> guidelines in the flash.c file that's part of StellarisWare.
> 
> 
> Thanks,
> 
> 
> Sean
> 
> 
> 
> 
> 
> On Thu, Mar 7, 2013 at 7:24 PM, Marlon Smith
> <mar...@gm...> wrote:
> 
>         Hi everyone,
>         
>         I'm using an Olimex ARM-USB-OCD with openocd.  On the luminary
>         microcontrollers from TI, there are 2 user registers that are
>         write-once.  I know they can be written using TI's
>         LMflashprogrammer, but I was wondering if I could do this with
>         openOCD?  I'm using GDB, and I can read the values at those
>         addresses, but trying to write to them gives me an error:
>         
>         No flash at address 0x400fe1e0
>         
>         Which makes sense, since it's not regular flash memory.
>         
>         Does anyone know how to do this?
>         
>         Thanks!
>         
>         Marlon
>         
>         
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