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

apps/earphone/include/app_testbox.h

@@ -0,0 +1,18 @@
+#ifndef _APP_TESTBOX_H_
+#define _APP_TESTBOX_H_
+
+#include "typedef.h"
+#include "system/event.h"
+
+extern void testbox_set_bt_init_ok(u8 flag);
+extern u8 testbox_get_status(void);
+extern void testbox_clear_status(void);
+extern u8 testbox_get_ex_enter_dut_flag(void);
+extern u8 testbox_get_ex_enter_storage_mode_flag(void);
+extern u8 testbox_get_connect_status(void);
+extern void testbox_clear_connect_status(void);
+extern u8 testbox_get_keep_tws_conn_flag(void);
+extern int app_testbox_event_handler(struct testbox_event *testbox_dev);
+
+
+#endif    //_APP_TESTBOX_H_