I thought I had read in the documentation that the code to write to
flash either should be or must be run out of RAM. Or, maybe I decided
to use the mass erase function to save time and power. I've forgotten.
Your scheme seems good if it works.
I know the TI supplied BSL copies itself to RAM before execution. Why?
Dale
Chris Liechti wrote:
N. Coesel wrote:
Why would you copy more than one subroutine in RAM? The only thing you
will
want in RAM is the code that actually programs the flash. The amount of
memory doesn't allow for allocating large fixed buffers for this.
the MSP430 can program itself when executing from flash. the flash
controler handles that nicely.
of course, it's a problem if you want to program the entire flash, but
then updating only parts of a program is tricky anyway.
right now, i'm implementing my own BSL (compatible with TI's BSL) that
resides in the top 2kB of flash, which i won't delete in upgrades. (it
currently is slightly larger than 1kB. maybe i'll reserve only 1.5kB)
chris
