stm32f427 sram bigger (#39)

docs/memory.md

@@ -37,3 +37,4 @@
 | CCM RAM | 0x10000000 - 0x1000FFFF |  64 KiB | Core Coupled Memory
 | SRAM1   | 0x20000000 - 0x2001BFFF | 112 KiB | General Purpose SRAM
 | SRAM2   | 0x2001C000 - 0x2001FFFF |  16 KiB | General Purpose SRAM
+| SRAM3   | 0x20020000 - 0x2002FFFF |  64 KiB | General Purpose SRAM

embed/boardloader/memory.ld

@@ -5,7 +5,7 @@ ENTRY(reset_handler)
 MEMORY {
   FLASH  (rx)  : ORIGIN = 0x08000000, LENGTH = 48K
   CCMRAM (wal) : ORIGIN = 0x10000000, LENGTH = 64K
-  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 128K
+  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 192K
 }
 
 main_stack_base = ORIGIN(CCMRAM) + LENGTH(CCMRAM); /* 8-byte aligned full descending stack */

embed/bootloader/memory.ld

@@ -5,7 +5,7 @@ ENTRY(reset_handler)
 MEMORY {
   FLASH  (rx)  : ORIGIN = 0x08020000, LENGTH = 128K
   CCMRAM (wal) : ORIGIN = 0x10000000, LENGTH = 64K
-  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 128K
+  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 192K
 }
 
 main_stack_base = ORIGIN(CCMRAM) + LENGTH(CCMRAM); /* 8-byte aligned full descending stack */

embed/firmware/memory.ld

@@ -5,7 +5,7 @@ ENTRY(reset_handler)
 MEMORY {
   FLASH  (rx)  : ORIGIN = 0x08040000, LENGTH = 768K
   CCMRAM (wal) : ORIGIN = 0x10000000, LENGTH = 64K
-  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 128K
+  SRAM   (wal) : ORIGIN = 0x20000000, LENGTH = 192K
 }
 
 main_stack_base = ORIGIN(SRAM) + LENGTH(SRAM); /* 8-byte aligned full descending stack */