diff --git a/src/common/tusb_verify.h b/src/common/tusb_verify.h
new file mode 100644
index 0000000..56ba8bc
--- /dev/null
+++ b/src/common/tusb_verify.h
@@ -0,0 +1,181 @@
+/* 
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2019 Ha Thach (tinyusb.org)
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ *
+ * This file is part of the TinyUSB stack.
+ */
+#ifndef TUSB_VERIFY_H_
+#define TUSB_VERIFY_H_
+
+#include <stdbool.h>
+#include <stdint.h>
+#include "tusb_option.h"
+#include "tusb_compiler.h"
+
+/*------------------------------------------------------------------*/
+/* This file use an advanced macro technique to mimic the default parameter
+ * as C++ for the sake of code simplicity. Beware of a headache macro
+ * manipulation that you are told to stay away.
+ *
+ * This contains macros for both VERIFY and ASSERT:
+ * 
+ *   VERIFY: Used when there is an error condition which is not the
+ *           fault of the MCU. For example, bounds checking on data
+ *           sent to the micro over USB should use this function.
+ *           Another example is checking for buffer overflows, where
+ *           returning from the active function causes a NAK.
+ * 
+ *   ASSERT: Used for error conditions that are caused by MCU firmware
+ *           bugs. This is used to discover bugs in the code more
+ *           quickly. One example would be adding assertions in library
+ *           function calls to confirm a function's (untainted)
+ *           parameters are valid.
+ * 
+ * The difference in behavior is that ASSERT triggers a breakpoint while
+ * verify does not.
+ *
+ *   #define TU_VERIFY(cond)                  if(cond) return false;
+ *   #define TU_VERIFY(cond,ret)              if(cond) return ret;
+ *   
+ *   #define TU_VERIFY_HDLR(cond,handler)     if(cond) {handler; return false;}
+ *   #define TU_VERIFY_HDLR(cond,ret,handler) if(cond) {handler; return ret;}
+ *
+ *   #define TU_ASSERT(cond)                  if(cond) {_MESS_FAILED(); TU_BREAKPOINT(), return false;}
+ *   #define TU_ASSERT(cond,ret)              if(cond) {_MESS_FAILED(); TU_BREAKPOINT(), return ret;}
+ *  
+ *------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+//--------------------------------------------------------------------+
+// TU_VERIFY Helper
+//--------------------------------------------------------------------+
+
+#if CFG_TUSB_DEBUG
+  #include <stdio.h>
+  #define _MESS_ERR(_err)   tu_printf("%s %d: failed, error = %s\r\n", __func__, __LINE__, tusb_strerr[_err])
+  #define _MESS_FAILED()    tu_printf("%s %d: ASSERT FAILED\r\n", __func__, __LINE__)
+#else
+  #define _MESS_ERR(_err) do {} while (0)
+  #define _MESS_FAILED() do {} while (0)
+#endif
+
+// Halt CPU (breakpoint) when hitting error, only apply for Cortex M3, M4, M7
+#if defined(__ARM_ARCH_7M__) || defined (__ARM_ARCH_7EM__)
+  #define TU_BREAKPOINT() do                                                                                \
+  {                                                                                                         \
+    volatile uint32_t* ARM_CM_DHCSR =  ((volatile uint32_t*) 0xE000EDF0UL); /* Cortex M CoreDebug->DHCSR */ \
+    if ( (*ARM_CM_DHCSR) & 1UL ) __asm("BKPT #0\n"); /* Only halt mcu if debugger is attached */            \
+  } while(0)
+
+#elif defined(__riscv)
+  #define TU_BREAKPOINT() do { __asm("ebreak\n"); } while(0)
+
+#else
+  #define TU_BREAKPOINT() do {} while (0)
+#endif
+
+/*------------------------------------------------------------------*/
+/* Macro Generator
+ *------------------------------------------------------------------*/
+
+// Helper to implement optional parameter for TU_VERIFY Macro family
+#define GET_3RD_ARG(arg1, arg2, arg3, ...)        arg3
+#define GET_4TH_ARG(arg1, arg2, arg3, arg4, ...)  arg4
+
+/*------------- Generator for TU_VERIFY and TU_VERIFY_HDLR -------------*/
+#define TU_VERIFY_DEFINE(_cond, _handler, _ret)  do            \
+{                                                              \
+  if ( !(_cond) ) { _handler; return _ret;  }                  \
+} while(0)
+
+/*------------------------------------------------------------------*/
+/* TU_VERIFY
+ * - TU_VERIFY_1ARGS : return false if failed
+ * - TU_VERIFY_2ARGS : return provided value if failed
+ *------------------------------------------------------------------*/
+#define TU_VERIFY_1ARGS(_cond)                         TU_VERIFY_DEFINE(_cond, , false)
+#define TU_VERIFY_2ARGS(_cond, _ret)                   TU_VERIFY_DEFINE(_cond, , _ret)
+
+#define TU_VERIFY(...)                   GET_3RD_ARG(__VA_ARGS__, TU_VERIFY_2ARGS, TU_VERIFY_1ARGS, UNUSED)(__VA_ARGS__)
+
+
+/*------------------------------------------------------------------*/
+/* TU_VERIFY WITH HANDLER
+ * - TU_VERIFY_HDLR_2ARGS : execute handler, return false if failed
+ * - TU_VERIFY_HDLR_3ARGS : execute handler, return provided error if failed
+ *------------------------------------------------------------------*/
+#define TU_VERIFY_HDLR_2ARGS(_cond, _handler)           TU_VERIFY_DEFINE(_cond, _handler, false)
+#define TU_VERIFY_HDLR_3ARGS(_cond, _handler, _ret)     TU_VERIFY_DEFINE(_cond, _handler, _ret)
+
+#define TU_VERIFY_HDLR(...)              GET_4TH_ARG(__VA_ARGS__, TU_VERIFY_HDLR_3ARGS, TU_VERIFY_HDLR_2ARGS,UNUSED)(__VA_ARGS__)
+
+/*------------------------------------------------------------------*/
+/* ASSERT
+ * basically TU_VERIFY with TU_BREAKPOINT() as handler
+ * - 1 arg : return false if failed
+ * - 2 arg : return error if failed
+ *------------------------------------------------------------------*/
+#define ASSERT_1ARGS(_cond)            TU_VERIFY_DEFINE(_cond, _MESS_FAILED(); TU_BREAKPOINT(), false)
+#define ASSERT_2ARGS(_cond, _ret)      TU_VERIFY_DEFINE(_cond, _MESS_FAILED(); TU_BREAKPOINT(), _ret)
+
+#ifndef TU_ASSERT
+#define TU_ASSERT(...)             GET_3RD_ARG(__VA_ARGS__, ASSERT_2ARGS, ASSERT_1ARGS,UNUSED)(__VA_ARGS__)
+#endif
+
+// TODO remove TU_ASSERT_ERR() later
+
+/*------------- Generator for TU_VERIFY_ERR and TU_VERIFY_ERR_HDLR -------------*/
+#define TU_VERIFY_ERR_DEF2(_error, _handler)  do               \
+{                                                              \
+  uint32_t _err = (uint32_t)(_error);                          \
+  if ( 0 != _err ) { _MESS_ERR(_err); _handler; return _err; } \
+} while(0)
+
+#define TU_VERIFY_ERR_DEF3(_error, _handler, _ret) do          \
+{                                                              \
+  uint32_t _err = (uint32_t)(_error);                          \
+  if ( 0 != _err ) { _MESS_ERR(_err); _handler; return _ret; } \
+} while(0)
+
+/*------------------------------------------------------------------*/
+/* ASSERT Error
+ * basically TU_VERIFY Error with TU_BREAKPOINT() as handler
+ *------------------------------------------------------------------*/
+#define ASSERT_ERR_1ARGS(_error)         TU_VERIFY_ERR_DEF2(_error, TU_BREAKPOINT())
+#define ASSERT_ERR_2ARGS(_error, _ret)   TU_VERIFY_ERR_DEF3(_error, TU_BREAKPOINT(), _ret)
+
+#ifndef TU_ASSERT_ERR
+#define TU_ASSERT_ERR(...)         GET_3RD_ARG(__VA_ARGS__, ASSERT_ERR_2ARGS, ASSERT_ERR_1ARGS,UNUSED)(__VA_ARGS__)
+#endif
+
+/*------------------------------------------------------------------*/
+/* ASSERT HDLR
+ *------------------------------------------------------------------*/
+
+#ifdef __cplusplus
+ }
+#endif
+
+#endif /* TUSB_VERIFY_H_ */