How to put a const array at 0x600 address

[Zhang Lei]

Posted on October 25, 2017 at 05:21

I want to put the boot_loader_version of 'const unsigned char boot_loader_version[3]={1,0,0};' at 0x600 of code flash, so the application can read it. How could I do it?

[Erwan YVIN]

Posted on October 26, 2017 at 10:47

Hello Zhang ,

you shouldadd your sections in your linker files

SECTIONS
{
 . = ORIGIN(flash);
 .boot0 : ALIGN(16) SUBALIGN(16)
 {
 . += 0x00000000;
 KEEP(*(.boot))
 KEEP(*(.handlers))
 KEEP(*(.crt0))
 } > flash
 .boot1 : ALIGN(16) SUBALIGN(16)
 {
 /* The vectors table requires a 2kB alignment.*/
 . = ALIGN(0x800);
 KEEP(*(.vectors))
 /* The IVPR register requires a 4kB alignment.*/
 . = ALIGN(0x1000);
 __ivpr_base__ = .;
 KEEP(*(.ivors))
 } > flash
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and

__attribute__ ((section ('.bootloadersection'))) const unsigned char boot_loader_version[3]={1,0,0};�?

you can try this ;)

Best Regards

Erwan

[wang mengmeng]

Posted on June 12, 2018 at 03:15

Hello Erwan：

   I have the similar question，but the difference is  I want to put the function at the permanent address，so that I can jump to it from the application program？ what should I do ？Thanks.

[Erwan YVIN]

Posted on June 12, 2018 at 08:56

Hello Wang ,

you should create a section located in 0x600 in user.ld.

and use __attribute__ in the function prototype.

There is a nice article about that

https://www.silabs.com/community/mcu/32-bit/knowledge-base.entry.html/2016/03/07/using_a_linker_scrip-s5bu

 

     Best Regards

                        Erwan