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ARM Community: S3C2440A Programming problem - ARM Community

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S3C2440A Programming problem Rate Topic: -----

#1 User is offline   Bhimashankar 

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Posted 04 December 2009 - 06:20 AM

Hi all,

I am developing my project on S3C2440A (ARM920T) kit.
But i have a problem for programming. Whenever i have tried to download program to memory after reset it was cleared.
So every time i have to download program again..

So i have tried the memory address change from
0x30000000 to 0x10000000, but it not works.

Please help me so that my program remains in memory after reset.

Thanks & Regards,
Bhimashankar
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#2 User is offline   isogen74 

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Posted 04 December 2009 - 09:50 AM

The download probably places the code in the RAM - which is volatile and state is lost when the MCU is reset. You will want to program the code in to Flash memory for it to be non-volatile - most MCUs come with some form of Flash programming routine.
When optimizing software, consider that the quickest code to run is the bit you removed from the call path.
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#3 User is offline   Bhimashankar 

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Posted 04 December 2009 - 10:35 AM

View Postisogen74, on Dec 4 2009, 09:50 AM, said:

The download probably places the code in the RAM - which is volatile and state is lost when the MCU is reset. You will want to program the code in to Flash memory for it to be non-volatile - most MCUs come with some form of Flash programming routine.



Thanks for reply. Actually I have tried to program flash using H-JTAG but because of some mistake bootloader from NOR flash is deleted.

Now to download bootloader again, but i don't know the procedure because now H-JTAG cant recognizes the NOR as well as NAND flash.

Please help me.
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