在逗猫棒的基础上实现蓝牙转USB功能，目前功能已经实现，还需裁剪掉之前逗猫棒的业务程序

include_lib/system/generic/lbuf_lite.h

@@ -0,0 +1,50 @@
+#ifndef LBUF_LITE_H
+#define LBUF_LITE_H
+
+
+#include "typedef.h"
+#include "list.h"
+#include "system/spinlock.h"
+
+
+struct lbuff_lite_head {
+    int magic_a;
+    struct list_head head;
+    struct list_head free;
+    spinlock_t lock;
+    u8 align;
+    u16 priv_len;
+    u32 total_size;
+    u32 last_addr;
+    void *priv;
+    int magic_b;
+};
+
+struct lbuff_lite_state {
+    u32 avaliable;
+    u32 fragment;
+    u32 max_continue_len;
+    int num;
+};
+
+
+
+struct lbuff_lite_head *lbuf_lite_init(void *buf, u32 len, int align, int priv_head_len);
+
+void *lbuf_lite_alloc(struct lbuff_lite_head *head, u32 len);
+
+void *lbuf_lite_realloc(void *lbuf, int size);
+
+void lbuf_lite_free(void *lbuf);
+
+u32 lbuf_lite_free_space(struct lbuff_lite_head *head);
+
+void lbuf_lite_state(struct lbuff_lite_head *head, struct lbuff_lite_state *state);
+
+void lbuf_lite_dump(struct lbuff_lite_head *head);
+
+int lbuf_lite_avaliable(struct lbuff_lite_head *head, int size);
+
+#endif
+
+