更新启动文件堆栈大小

app/Drivers/CMSIS/Device/ST/STM32F4xx/Source/Templates/arm/startup_stm32f407xx.s

@@ -30,7 +30,7 @@
 ;   <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-Stack_Size      EQU     0x00000400
+Stack_Size      EQU     0x00000800
 
                 AREA    STACK, NOINIT, READWRITE, ALIGN=3
 Stack_Mem       SPACE   Stack_Size
@@ -41,8 +41,9 @@ __initial_sp
 ;   <o>  Heap Size (in Bytes) <0x0-0xFFFFFFFF:8>
 ; </h>
 
-;未用到编译器自带的内存管理(malloc,free等)，设置Heap_Szie为0
-Heap_Size       EQU     0x00000000
+;鏈�敤鍒扮紪璇戝櫒鑷�甫鐨勫唴瀛樼�鐞�(malloc,free绛�)锛岃�缃瓾eap_Szie涓�0 (DEMO)
+;sizeof(g_eth_dma_rx_dscr_tab)+sizeof(g_eth_dma_tx_dscr_tab)+sizeof(g_eth_rx_buf)+sizeof(g_eth_tx_buf)=12448byte,Because of the hexadecimal,12448byte*2=0x6140
+Heap_Size       EQU     0x00007200
 
                 AREA    HEAP, NOINIT, READWRITE, ALIGN=3
 __heap_base
@@ -172,7 +173,7 @@ Reset_Handler    PROC
                  EXPORT  Reset_Handler             [WEAK]
         IMPORT  SystemInit
         IMPORT  __main
-                 LDR     R0, =0xE000ED88    ; 使能浮点运算 CP10,CP11
+                 LDR     R0, =0xE000ED88    ; 使锟杰革拷锟斤拷锟斤拷锟斤拷 CP10,CP11
                  LDR     R1,[R0]
                  ORR     R1,R1,#(0xF << 20)
                  STR     R1,[R0]