rtos堆空间挪到RAM上

Middlewares/Third_Party/FreeRTOS/Source/portable/MemMang/heap_4.c

@@ -89,6 +89,7 @@
 * heap - probably so it can be placed in a special segment or address. */
     extern uint8_t ucHeap[ configTOTAL_HEAP_SIZE ];
 #else
+    __attribute__((section(".rtos_heap")))
     PRIVILEGED_DATA static uint8_t ucHeap[ configTOTAL_HEAP_SIZE ];
 #endif /* configAPPLICATION_ALLOCATED_HEAP */