使用硬汉qspi算法后，拓展一下sct的使用

初晴sama

除了对文件使用 option之外，还可以使用sct文件，本质上都是调用sct文件，添加指定过的文件的.o文件。
原型如下

1. LR_IROM1 0x08000000 0x00200000 { ; load region size_region
   
2. ER_IROM1 0x08000000 0x00200000 { ; load address = execution address
   
3. *.o (RESET, +First)
   
4. *(InRoot$Sections)
   
5. .ANY (+RO)
   
6. .ANY (+XO)
   
7. }
   
8. RW_IRAM1 0x20000000 0x00020000 { ; RW data
   
9. .ANY (+RW +ZI)
   
10. }
    
11. RW_IRAM2 0x24000000 0x00080000 {
    
12. .ANY (+RW +ZI)
    
13. }
    
14. }

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对文件option之后就变成了

1. LR_IROM1 0x08000000 0x00200000 { ; load region size_region
   
2. ER_IROM1 0x08000000 0x00200000 { ; load address = execution address
   
3. *.o (RESET, +First)
   
4. *(InRoot$Sections)
   
5. .ANY (+RO)
   
6. .ANY (+XO)
   
7. }
   
8. RW_IRAM1 0x20000000 0x00020000 { ; RW data
   
9. .ANY (+RW +ZI)
   
10. }
    
11. RW_IRAM2 0x24000000 0x00080000 {
    
12. .ANY (+RW +ZI)
    
13. }
    
14. }
    
15. 
    
16. LR_ROM1 0x90000000 0x02000000 {
    
17. ER_ROM1 0x90000000 0x02000000 { ; load address = execution address
    
18. guiapp_resources.o (+RO)
    
19. }
    
20. }

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这个时候又想对其他文件某个常量进行映射到外部flash，继续修改

1. LR_ROM1 0x90000000 0x02000000 {
   
2. ER_ROM1 0x90000000 0x02000000 { ; load address = execution address
   
3. guiapp_resources.o (+RO)
   
4. *.o (EXTFLASH)
   
5. }
   
6. }

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这个时候就可以单独对常量操作了

1. const unsigned char Tx_Buffer123[] __attribute__((section("EXTFLASH"))) =
   
2. {
   
3. 0x36,0x37,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
4. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
5. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
6. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
7. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
8. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
9. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
   
10. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
    
11. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
    
12. 0x32,0x31,0x32,0x33,0x34,0x35,0x36,0x37,0x38,0x39,
    
13. };

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再搞一下堆栈的设置，由于使用到宏定义相关内容，所以需要添加调用宏定义的命令

1. “#! armcc -E”

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这个时候再添加堆栈的定义

1.   ARM_LIB_STACK 0x20000000 UNINIT -STACK_SPACE { ; Stack region growing down
   
2. *(STACK) }
   
3. 
   
4. ARM_LIB_HEAP 0x20100000 EMPTY 0x200
   
5. {
   
6. }

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栈是向下生长，所以是负号，常用的就这些，还有sram的，看硬汉的就可以了。

eric2013

谢谢楼主分享。