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STM32F ¸¶ÀÌÄÄ °øºÎÇÒ¶§ RAM¿¡ ¿Ã·Á¼­ ½ÃÇèÇϱâ.(¼Óµµ ºü¸§) ±èÁ¾È£ | »èÁ¦Çϱâ

# STM32 (VS Code + Cmake) RAM µð¹ö±ë ȯ°æ ¼³Á¤ °¡À̵å **Àû¿ë º¸µå:** Nucleo-F767ZI (Ÿ Ĩ¼Âµµ ÁÖ¼Ò¿Í ¸Þ¸ð¸® Å©±â¸¸ º¯°æÇÏ¿© µ¿ÀÏ Àû¿ë °¡´É) **°³¹ß ȯ°æ:** STM32CubeMX, VS Code, Cmake, Cortex-Debug (OpenOCD) **¸ñÀû:** Äڵ带 Flash ¸Þ¸ð¸®°¡ ¾Æ´Ñ RAM¿¡ ´Ù¿î·ÎµåÇÏ°í ½ÇÇàÇÏ¿© **1) Flash ¸Þ¸ð¸® ¼ö¸í º¸È£** ¹× **2) ¾ÐµµÀûÀ¸·Î ºü¸¥ ´Ù¿î·Îµå/µð¹ö±ë ¼Óµµ** È®º¸ --- ## 1. RAM Àü¿ë ¸µÄ¿ ½ºÅ©¸³Æ®(.ld) »ý¼º MCU°¡ Äڵ带 Flash(`0x08000000`)°¡ ¾Æ´Ñ RAM(`0x20000000`)¿¡ ¹èÄ¡Çϵµ·Ï ¸µÄ¿ ½ºÅ©¸³Æ®¸¦ ¼öÁ¤ÇÕ´Ï´Ù. 1. ÇÁ·ÎÁ§Æ® ·çÆ® °æ·ÎÀÇ `STM32F767ZITx_FLASH.ld` (¶Ç´Â `STM32F767xx_FLASH.ld`) ÆÄÀÏÀ» º¹»çÇÕ´Ï´Ù. 2. º¹»çÇÑ ÆÄÀÏÀÇ À̸§À» **`STM32F767xx_RAM.ld`**·Î º¯°æÇÕ´Ï´Ù. 3. »õ·Î ¸¸µç `_RAM.ld` ÆÄÀÏÀ» ¿­°í, ÃÖ»ó´ÜÀÇ `MEMORY` ºí·ÏÀ» ¾Æ·¡¿Í °°ÀÌ ¼öÁ¤ÇÏ¿© RAM(ÃÑ 512KB)À» ÄÚµå¿ë 256KB, µ¥ÀÌÅÍ¿ë 256KB·Î ¹Ý¹Ý ³ª´¯´Ï´Ù. ```ld /* STM32F767xx_RAM.ld */ MEMORY { /* RAMÀÇ ¾Õ 256KB¸¦ Äڵ尡 ¿Ã¶ó°¡´Â FLASH ¿µ¿ªÃ³·³ ¼Ó¿©¼­ ¸ÅÇÎ */ FLASH (rx) : ORIGIN = 0x20000000, LENGTH = 256K /* ³ª¸ÓÁö 256KB¸¦ ½ÇÁ¦ º¯¼ö/µ¥ÀÌÅͰ¡ ¿Ã¶ó°¡´Â RAM °ø°£À¸·Î »ç¿ë */ RAM (xrw) : ORIGIN = 0x20040000, LENGTH = 256K } ``` ## 2. ÀÎÅÍ·´Æ® º¤ÅÍ Å×À̺í À§Ä¡ º¯°æ Äڵ尡 RAM¿¡¼­ ½ÇÇàµÇ¹Ç·Î, ÀÎÅÍ·´Æ® ¹ß»ý ½Ã ÂüÁ¶ÇÏ´Â º¤ÅÍ Å×À̺íÀÇ ±âÁØ ÁÖ¼Òµµ RAMÀ¸·Î º¯°æÇØ¾ß ÇÕ´Ï´Ù. 1. `Core/Src/system_stm32f7xx.c` ÆÄÀÏÀ» ¿±´Ï´Ù. 2. »ó´ÜÀÇ `USER_VECT_TAB_ADDRESS` ÁÖ¼®À» ÇØÁ¦Çϰí, `VECT_TAB_BASE_ADDRESS`¸¦ `0x20000000U`·Î º¯°æÇÕ´Ï´Ù. ```c /* system_stm32f7xx.c */ #define USER_VECT_TAB_ADDRESS /* ÁÖ¼® ÇØÁ¦ (Ȱ¼ºÈ­) */ #if defined(USER_VECT_TAB_ADDRESS) /* FLASH_BASE ´ë½Å RAMÀÇ ½ÃÀÛ ÁÖ¼Ò ÀÔ·Â */ #define VECT_TAB_BASE_ADDRESS 0x20000000U #define VECT_TAB_OFFSET 0x00000000U #endif ``` ## 3. CMakeLists.txt ¸µÄ¿ ½ºÅ©¸³Æ® ±³Ã¼ ºôµå ½Ã ±âÁ¸ FLASH ¸µÄ¿ ½ºÅ©¸³Æ® ´ë½Å ¿ì¸®°¡ ¸¸µç RAM ¸µÄ¿ ½ºÅ©¸³Æ®¸¦ »ç¿ëÇϵµ·Ï ÁöÁ¤ÇÕ´Ï´Ù. 1. ÃÖ»ó´Ü `CMakeLists.txt` ÆÄÀÏÀ» ¿±´Ï´Ù. 2. `STM32F767xx_FLASH.ld` ºÎºÐÀ» ã¾Æ **`STM32F767xx_RAM.ld`**·Î º¯°æÇÕ´Ï´Ù. 3. **[ÁÖÀÇ]** ÆÄÀÏ ³»¿¡ `-T` ¸µÄ¿ ¿É¼ÇÀÌ Áߺ¹À¸·Î µé¾î°¡Áö ¾Êµµ·Ï À¯ÀÇÇÕ´Ï´Ù. (¸µÄ¿ ½ºÅ©¸³Æ® Áߺ¹ ¿¡·¯ ¹æÁö) ```cmake /* CMakeLists.txt ¿¹½Ã */ target_link_options(${CMAKE_PROJECT_NAME} PRIVATE -T${CMAKE_CURRENT_SOURCE_DIR}/STM32F767xx_RAM.ld # ... ±âŸ ¿É¼Ç ... ) ``` ## 4. VS Code ÀÚµ¿ ºôµå ÀÛ¾÷ ¼³Á¤ (`tasks.json`) `F5`(µð¹ö±ë)¸¦ ´­·¶À» ¶§, ÀÌÀü Äڵ尡 ½ÇÇàµÇ´Â °ÍÀ» ¹æÁöÇϰí **ÀÚµ¿À¸·Î ÃֽŠÄڵ带 ºôµå**Çϵµ·Ï Task¸¦ »ý¼ºÇÕ´Ï´Ù. 1. `.vscode` Æú´õ ¾È¿¡ **`tasks.json`** ÆÄÀÏÀ» »ý¼ºÇÕ´Ï´Ù. 2. ¾Æ·¡ÀÇ Cmake Àü¿ë ºôµå Äڵ带 ºÙ¿©³Ö½À´Ï´Ù. ```json { "version": "2.0.0", "tasks": [ { "type": "cmake", "label": "Cmake Build Task", "command": "build", "problemMatcher": [], "group": { "kind": "build", "isDefault": true } } ] } ``` ## 5. VS Code µð¹ö°Å ¼³Á¤ (`launch.json`) ºôµåµÈ `.elf` ÆÄÀÏÀ» RAM¿¡ ¿Ã¸®°í, º¸µå ¸®¼Â ½Ã ¾û¶×ÇÏ°Ô Flash¸¦ ÀÐÁö ¾Ê°í **°­Á¦·Î RAMÀ¸·Î Á¡ÇÁ**Çϵµ·Ï ¼³Á¤ÇÕ´Ï´Ù. 1. `.vscode` Æú´õ ¾È¿¡ **`launch.json`** ÆÄÀÏÀ» »ý¼º(¶Ç´Â ¼öÁ¤)ÇÕ´Ï´Ù. 2. ¾Æ·¡ Äڵ带 ºÙ¿©³Ö½À´Ï´Ù. ```json { "version": "0.2.0", "configurations": [ { "name": "Debug in RAM", "cwd": "${workspaceFolder}", "executable": "${workspaceFolder}/build/${workspaceFolderBasename}.elf", "request": "launch", "type": "cortex-debug", "servertype": "openocd", "device": "STM32F767ZI", "configFiles": [ "board/st_nucleo_f7.cfg" ], "runToEntryPoint": "main", "showDevDebugOutput": "none", "preLaunchTask": "Cmake Build Task", "postLaunchCommands": [ "set $sp = *(unsigned int*)0x20000000", "set $pc = *(unsigned int*)0x20000004" ], "postRestartCommands": [ "set $sp = *(unsigned int*)0x20000000", "set $pc = *(unsigned int*)0x20000004" ] } ] } ``` * **`preLaunchTask`**: µð¹ö±ë Á÷Àü `tasks.json`À» È£ÃâÇÏ¿© ÀÚµ¿ ºôµå ¼öÇà * **`postLaunchCommands` / `postRestartCommands`**: ¸®¼Â Á÷ÈÄ MCUÀÇ ¸è»ìÀ» Àâ°í PC(Program Counter)¿Í SP(Stack Pointer)¸¦ °­Á¦·Î RAM ÁÖ¼Ò·Î °íÁ¤ÇÏ¿© ½ÇÇà ## 6. Àû¿ë ¹× ½ÇÇà (°¡Àå Áß¿ä) ±âÁ¸ Flash ºôµå ij½Ã°¡ ³²¾ÆÀÖÀ¸¸é ¿¡·¯°¡ ¹ß»ýÇϹǷÎ, **¹Ýµå½Ã ij½Ã¸¦ Áö¿ì°í »õ·Î ºôµå**ÇØ¾ß ÇÕ´Ï´Ù. 1. ´ÜÃàŰ `Ctrl + Shift + P` -> **`Cmake: Delete Cache and Reconfigure`** ½ÇÇà (ij½Ã ÃʱâÈ­) 2. Äڵ带 ¼öÁ¤Çϰí **`F5`** Ű ´©¸£±â 3. ÇÏ´Ü Å͹̳ο¡¼­ ÀÚµ¿À¸·Î ºôµå°¡ ¿Ï·áµÈ ÈÄ µð¹ö°Å°¡ ½ÇÇàµÇ¸ç `main()` ÇÔ¼ö ù ÁÙ¿¡¼­ Á¤ÁöÇÔ. > **✅ ÃÖÁ¾ È®ÀÎ ¹æ¹ý** > µð¹ö±ë ¸ðµå ÁøÀÔ ½Ã ÁÂÃø **'È£Ãâ ½ºÅÃ(Call Stack)'** ¶Ç´Â **'·¹Áö½ºÅÍ(Registers) -> Core -> pc'** °ªÀÌ **`0x2000...`** ´ë¿ªÀ¸·Î ½ÃÀÛÇÏ¸é ¿Ïº®ÇÏ°Ô RAM¿¡¼­ µ¿ÀÛ ÁßÀÎ °ÍÀÔ´Ï´Ù!

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