[ECOS] Running code from on-chip flash

Bob Brusa bob.brusa@gmail.com
Wed Sep 30 07:58:00 GMT 2009

Am 27.09.2009, 18:37 Uhr, schrieb Andrew Lunn <andrew@lunn.ch>:

> On Sun, Sep 27, 2009 at 08:57:59AM +0530, Mandeep Sandhu wrote:
>> Hi all,
>> I'm going to be using a real hardware for the first time (with ECOS).
>> The h/w is the Atmel AT91SAM7X512 SoC.
>> In order to save RAM, i'll be running the code from the on-chip flash
>> itself (512KB).
>> Now is it true that if my code resides on the flash, I will not be
>> able to write to it?
> Wrong. You just need to be careful where you write. The AT91SAM7X512
> is also a bit easier since it has two controllers, so you could have
> one controller for code and the other for data.
>     Andrew
....and make sure that while you are fiddeling around in one bunch of  
flash, interrupts are either off or interrupts do not use code from this  
same bunch of flash....

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