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SPI Boot Packing 8Bit

Question asked by garygru on Jul 8, 2013
Latest reply on Jul 19, 2013 by Harshit.Gaharwar

Hi all,

 

I'm not sure if I understand the boot packing of the sharc processors right:

 

This is in the assembler listing of the boot kernel (which should reside in the beginning of the .ldr-file)

     ...

     5     06be04000000    29     Call user_init (DB);

     6     0f7b00000000    30     IMASK = 0;             // mask all interrupts

     ...

 

These are the instructions in my 8Bit-binary .ldr-file

...

0000 0804 BE06

0000 0000 7B0F

...

 

I wonder that they are already byte reversed. Shall I reverse 'em again, i.e. transmitting 0x06 than 0xBE, 0x04 ,….?

That's what I do in the screenshot. (interpreted as SPI Mode 3, LSBF)

 

thanks,

Gary

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