Re: AT91SAM9261 + DataFlashBoot_100.bin

On Fri, 21 Apr 2006 20:27:43 -0400, James Kosin <james_kosin@xxxxxxx>
wrote:


James,

Or alternative, I search a way to setup the SDRAM. I tried the various
examples, but they do not seem to work.

(1) Search the boot-loader code for SDRAM. I believe the SDRAM is
initialized by the function AT91F_InitSDRAM().

(2) Get the data-sheet for the SDRAM you are using. The data sheet
will describe the initialization needed.

(3) The data sheet for the 9261 should have a section on the SDRAMC and
how the SDRAM needs to be initialized.

Let me know if you need more specific help.

As I wrote, I tried all examples I could get and none worked. Either
the MCK was setup for 48MHz or they did crash (MMU ADS examples).

Last week-end I disassembled the 2nd level Bootloader and have now a
working solution.
It seems the order in which certain parts are must be setup is
essantial.

Meanwhile Atmels support send me the original sources.

--
42Bastian
Do not email to bastian42@xxxxxxxxx, it's a spam-only account :-)
Use <same-name>@monlynx.de instead !
.

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