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目的:在flash末尾存放软件版本号
过程:
1.flash地址:
flash start address:0x08000000 ,flash end address:0x08003fff
2.版本号结构体:
#define MAJOR_VERSION 1
#define MINOR_VERSION 0
#define PATCH_VERSION 0
typedef struct
{
uint32_t major_version;
uint32_t minor_version;
uint32_t patch_version;
uint32_t code_crc32;
}soft_version_info_t;
const soft_version_info_t soft_version __attribute__((at(0x08003ff0)))
={MAJOR_VERSION,MINOR_VERSION,PATCH_VERSION,0};
3.问题:
1.超出28字节,发现末尾有RW数据自动放置FLASH末尾,导致超出flash
map文件
4.请教如何修改,使RW数据,不自动放在flash末尾
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