Setting address of variable in flash

Question

Hi, 
 Is it possible to set an address lets say for an array to be in Flash memory on compilation?
So that way I dont need to reserve memory twice - once in my program memory area and once in flash. 
 Thanks!

Nikita · Accepted Answer

You mean something like this? 
 const uint8_t __attribute__((section (".my_array_in_flash_sect"))) my_array[my_array_size] __attribute__((used)) = {0};
 
 gcc_nrf51_s110_xxaa.ld 
 /* Linker script to configure memory regions. */
SEARCH_DIR(.)
GROUP(-lgcc -lc -lnosys)

MEMORY
{
 FLASH (rx) : ORIGIN = 0x14000, LENGTH = 0x13C00 /* 80 kB is taken by S110, 16kB is taken by bootloader, 160 kB available for application in single bank mode or 80 kB in dual bank mode, 1kB for my array */
 my_array_in_flash (rwx) : ORIGIN = 0x27C00, LENGTH = 0x400 /* my array */
 RAM (rwx) : ORIGIN = 0x20002000, LENGTH = 0x2000 /* 8 kB, 8 kB is taken by S110. */
}
INCLUDE "gcc_nrf51_common.ld"
 
 gcc_nrf51_common.ld 
 SECTIONS
{
 .my_array_in_flash_block 0x00027C00 :
 {
 KEEP(*(.my_array_in_flash_sect))
 } > my_array_in_flash
...
 
 UPD: 
 For Keil it's like this: 
 #define MY_ARRAY_ADDRESS 0x28C00
const uint8_t my_array[my_array_size] __attribute__((at(MY_ARRAY_ADDRESS))) __attribute__((used)) = {0};

Setting address of variable in flash

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