IAR8.40如何将数据存放在flash上

fenglang · 发表于 5 小时前

有一个静态全局结构体变量，想将它放在flash的某个固定地址上。

变量定义如下：

__attribute__((section(".my_data")))
static my_struct_t temp_data  = 0xAA;

icf文件如下：

/*###ICF### Section handled by ICF editor, don't touch! ****/
/*-Editor annotation file-*/
/* IcfEditorFile="$TOOLKIT_DIR$\config\ide\IcfEditor\cortex_v1_0.xml" */
/*-Specials-*/
define symbol __ICFEDIT_intvec_start__ = 0x08000000;
/*-Memory Regions-*/
define symbol __ICFEDIT_region_ROM_start__ = 0x08008000;
define symbol __ICFEDIT_region_ROM_end__ = 0x0807FFFF;
define symbol __ICFEDIT_region_RAM_start__ = 0x20000000;
define symbol __ICFEDIT_region_RAM_end__ = 0x2001FFFF;
/*-Sizes-*/
define symbol __ICFEDIT_size_cstack__ = 0x400;
define symbol __ICFEDIT_size_heap__ = 0x200;
/**** End of ICF editor section. ###ICF###*/

define memory mem with size = 4G;
define region ROM_region    = mem:[from __ICFEDIT_region_ROM_start__ to __ICFEDIT_region_ROM_end__];
define region RAM_region    = mem:[from __ICFEDIT_region_RAM_start__ to __ICFEDIT_region_RAM_end__];
define region MY_region    = mem:[from 0x08007000  to 0x08008000];

define block CSTACK with alignment = 8, size = __ICFEDIT_size_cstack__ { };
define block HEAP    with alignment = 8, size = __ICFEDIT_size_heap__    { };
define block MY_DATA with alignment = 4 {section .my_data};
initialize by copy { readwrite };
do not initialize  { section .noinit };

place at address mem:__ICFEDIT_intvec_start__ { readonly section .intvec };

place in ROM_region { readonly };
place in RAM_region { readwrite,
                     block CSTACK, block HEAP };
place in MY_region { block MY_DATA  };

生成的map文件中，temp_data 显示在0x800'7000的位置，但是hex文件中0x800'7000的地址没有数据。请问是什么原因？感觉还是我的icf写的有问题