Thanks Rolf, Nico, and Chris,
I found slaa149 and it's almost exactly what I want. I'm going to add
a data flash to it and a serial port so that arbitrary programs can be
loaded into it from a PC and then transferred to the target.
With that, a user can download an upgrade from our website and transfer
it into their target without a FET tool and underlying software.
Sincerely,
David Smead
www.amplepower.com
www.amplepower.net
On Tue, 18 Oct 2005, Chris Liechti wrote:
N. Coesel wrote:
At 00:02 18-10-05 -0700, you wrote:
I'm considering various ways to let users update firmware on a MSP430F1232
device. There isn't much room left for a self-programming application so
I think the way to go is using the BSL.
i've used that a few times too. it is a good option if you have the BSL pins
free. you can also start the BSL from the software if you have only a two
wire serial (however if something goes wrong during the programming (the
target is reset, can't sync with BSL), it's not possible to recover)
Has anyone put together a `programmer' - a larger MSP430 that talks BSL to
another processor?
If you want to program devices in-system, the fastest way is to use the
JTAG port. BSL is very slow (I haven't managed to use BSL at higher speeds
than 9600). TI has diagrams and sources for a complete JTAG tool somewhere
on their website (SLAA149) which probably does exactly what you want.
i often use the BSL at 38400 without any problems. however you need a target
with 2kB RAM to use these faster BSLs. (if you have, our msp430-bsl has a
easy to use "--speed" option, it takes care of the replacement BSL etc)
for a product, i made a BSL that uses the hardware USART, that runs at 115200
baud (even with only 1kB RAM). actualy i have quiet a few BSL implementations
but i'm not sure if i can release them :-(
chris
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