修改RAM信息相关内容

bsp/stm32/stm32l4r9-st-eval/README.md

@@ -91,7 +91,7 @@ msh >
 
 3. 输入`pkgs --update`命令更新软件包。
 
-4. 输入`scons --target=mdk4/mdk5/iar` 命令重新生成工程。
+4. 输入`scons --target=mdk5/iar` 命令重新生成工程。
 
 本章节更多详细的介绍请参考 [STM32 系列 BSP 外设驱动使用教程](../docs/STM32系列BSP外设驱动使用教程.md)。
 
@@ -102,9 +102,9 @@ msh >
 - RAM 分为三部分
 
  ```
-      RAM1 (rw) : ORIGIN = 0x20000000, LENGTH =  192k /* 192K sram */
-      RAM2 (rw) : ORIGIN = 0x20040000, LENGTH =  384k /* 384K sram */ 
-      RAM3 (rw) : ORIGIN = 0x10000000, LENGTH =   64k /* 64K sram  */
+      RAM1 (rw) : ORIGIN = 0x20000000, LENGTH =  192k /* 192K sram 用于程序定义全局变量 静态变量存放*/
+      RAM2 (rw) : ORIGIN = 0x10000000, LENGTH =   64k /* 64K sram 用于程序定义全局变量 静态变量存放 */ 
+      RAM3 (rw) : ORIGIN = 0x20040000, LENGTH =  384k /* 384K sram 用于heap*/ 
  ```
 
 

bsp/stm32/stm32l4r9-st-eval/board/board.h

@@ -25,12 +25,12 @@ extern "C" {
 #define STM32_FLASH_SIZE               (2048 * 1024)
 #define STM32_FLASH_END_ADDRESS        ((uint32_t)(STM32_FLASH_START_ADRESS + STM32_FLASH_SIZE))
 
-#define STM32_SRAM1_SIZE               (384)
-#define STM32_SRAM1_START              (0x20040000)
-#define STM32_SRAM1_END                (STM32_SRAM1_START + STM32_SRAM1_SIZE * 1024)
+#define STM32_SRAM3_SIZE               (384)
+#define STM32_SRAM3_START              (0x20040000)
+#define STM32_SRAM3_END                (STM32_SRAM3_START + STM32_SRAM3_SIZE * 1024)
 
-#define HEAP_BEGIN                     STM32_SRAM1_START
-#define HEAP_END                       STM32_SRAM1_END
+#define HEAP_BEGIN                     STM32_SRAM3_START
+#define HEAP_END                       STM32_SRAM3_END
 
 void SystemClock_Config(void);
 

bsp/stm32/stm32l4r9-st-eval/board/linker_scripts/link.sct

@@ -2,14 +2,18 @@
 ; *** Scatter-Loading Description File generated by uVision ***
 ; *************************************************************
 
-LR_IROM1 0x08000000 0x00200000  {    ; load region size_region
-  ER_IROM1 0x08000000 0x00200000  {  ; load address = execution address
-   *.o (RESET, +First)
-   *(InRoot$$Sections)
-   .ANY (+RO)
-  }
-  RW_IRAM2 0x20000000 0x00030000  {  ; RW data
-   .ANY (+RW +ZI)
-  }
+LR_IROM1 0x08000000 0x00200000  	{    ; load region size_region
+	ER_IROM1 0x08000000 0x00200000  {  ; load address = execution address
+	*.o (RESET, +First)
+	*(InRoot$$Sections)
+	.ANY (+RO)
+	}
+
+	RW_IRAM1 0x20000000 0x00040000  {  ; RW data
+	.ANY (+RW +ZI)
+	}
+
+
+
 }