Reserve Flash memory space with XC32

Asked Oct 06 '19 at 17:02

Active Oct 06 '19 at 17:15

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I'm writing code for an ATSAM device using MPLAB X and XC32 compiler. This device has 1Mbytes of flash memory and I need to put 200kBytes apart to be a placeholder for a configuration script (the main code will execute this script).

I'm trying to do this without messing with linker. This is what I'm doing:

#pragma region name="plan_mem" origin=0xce000 size=0x32000

typedef struct {
    uint16_t version;
    //.... very long structure....
} Plan;

const Plan plan __attribute__((region("plan_mem"))) = {
    0x1, //....
};

While the code still works, I do have this warning from the compiler: warning: 'region' attribute directive ignored [-Wattributes] and the final address is indeed ignored.

Why is it ignored since that came from the XC32 manual?

There is any other way to achieve the same?

edited Oct 06 '19 at 17:15

asked Oct 06 '19 at 17:02

Gustavo Vargas

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Are you using GCC or the XC32 compiler? The question is tagged GCC and GCC is in the title but the body of the question says XC32... – mnistic Oct 06 '19 at 17:11
Oops, my mistake here, thanks, going to fix it. I'm using XC32. – Gustavo Vargas Oct 06 '19 at 17:14
What about `-mreserve`in the linker script? – Mike Nov 04 '19 at 07:40

Reserve Flash memory space with XC32

0 Answers0