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access to the register

maria maria

I'm using the soft-core Cortex-M0,keil uvision 5,vivado 14.4 i interfaced an accelerator with my arm architecture,

when i do this ,everything was alright in the vivado simulator

 volatile signed int *rega = (volatile signed int *) 0x59000000;

*rega=45;


but when i try this

volatile signed int *rega = (volatile signed int *) 0x59000000;

int A[]={45,45};
*rega=A[0];


the simulation doesn't work,ther's no access to the register:0x59000000

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  • 0 in reply to maria maria

    Why? Do you not understand what you are being told or observing? Is there someone in your project group that has some more experience and insight? Your manager perhaps, or the person assigning the project?

    You need to evaluate ALL the code being run in your system, and very specifically the startup and system code, the code unpacking the runtimes load region, the functionality of the RAM, and how the memory is described in the scatter file.

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  • 0 in reply to maria maria

    Why? Do you not understand what you are being told or observing? Is there someone in your project group that has some more experience and insight? Your manager perhaps, or the person assigning the project?

    You need to evaluate ALL the code being run in your system, and very specifically the startup and system code, the code unpacking the runtimes load region, the functionality of the RAM, and how the memory is described in the scatter file.

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