merge master

src/lv_misc/lv_mem.c

@@ -103,6 +103,21 @@ void lv_mem_init(void)
 #endif
 }
 
+/**
+ * Clean up the memory buffer which frees all the allocated memories.
+ * @note It work only if `LV_MEM_CUSTOM == 0`
+ */
+void lv_mem_deinit(void)
+{
+#if LV_MEM_CUSTOM == 0
+    memset(work_mem, 0x00, (LV_MEM_SIZE / sizeof(MEM_UNIT)) * sizeof(MEM_UNIT));
+    lv_mem_ent_t * full = (lv_mem_ent_t *)work_mem;
+    full->header.s.used = 0;
+    /*The total mem size id reduced by the first header and the close patterns */
+    full->header.s.d_size = LV_MEM_SIZE - sizeof(lv_mem_header_t);
+#endif
+}
+
 /**
  * Allocate a memory dynamically
  * @param size size of the memory to allocate in bytes