diff --git a/src/example/decode_example/CC26xx/IAR.tar.bz2 b/src/example/decode_example/CC26xx/IAR.tar.bz2
new file mode 100644
index 0000000..7d09fb5
Binary files /dev/null and b/src/example/decode_example/CC26xx/IAR.tar.bz2 differ
diff --git a/src/example/decode_example/CC26xx/Source/Application/Board/Board_uart.h b/src/example/decode_example/CC26xx/Source/Application/Board/Board_uart.h
index 09577ea..d60c849 100644
--- a/src/example/decode_example/CC26xx/Source/Application/Board/Board_uart.h
+++ b/src/example/decode_example/CC26xx/Source/Application/Board/Board_uart.h
@@ -46,7 +46,7 @@ extern "C" {
 
 #include "../../npi/inc/npi_tl_uart.h"
 
-#define uint8    unsigned char
+#define UART_BUFFER_SIZE 128
 
 extern void Uart_Init(npiCB_t npiCBack);
 
@@ -54,6 +54,13 @@ extern void UART_WriteTransport (uint8 *str, uint8 len);
 
 extern uint8 *UART_GetRxBufferAddress();
 
+#if defined UART_DEBUG
+extern void PrintString(uint8 *str);
+
+extern void PrintValue(char *title, uint32 value, uint8 format);
+#endif
+
+
 extern void UART_DLY_ms(unsigned int ms);
 
 #ifdef __cplusplus
diff --git a/src/example/decode_example/CC26xx/Source/Application/Board/board_lcd.c b/src/example/decode_example/CC26xx/Source/Application/Board/board_lcd.c
index 38cf400..4c3d096 100644
--- a/src/example/decode_example/CC26xx/Source/Application/Board/board_lcd.c
+++ b/src/example/decode_example/CC26xx/Source/Application/Board/board_lcd.c
@@ -48,6 +48,7 @@
 #include "board_lcd.h"
 #include "board_uart.h"
 #include "Board.h"
+#include "utils.h"
 
 /*********************************************************************
  * TYPEDEFS
@@ -332,95 +333,6 @@ unsigned char BMP[] =
 
 void Draw_BMP(unsigned char x0, unsigned char y0,unsigned char x1, unsigned char y1,unsigned char BMP[]);
 
-static void _itoa(unsigned int uiNum, unsigned char *buf, unsigned char uiRadix)
-{
-    unsigned char c, i;
-    unsigned char *p, rst[32];
-
-    p = rst;
-    for (i = 0; i < 32; i++, p++)
-    {
-        /* Isolate a digit */
-        c = uiNum % uiRadix;
-        /* Convert to Ascii */
-        *p = c + ((c < 10) ? '0' : '7');
-        uiNum /= uiRadix;
-        if (!uiNum)
-            break;
-    }
-
-    for (c = 0; c <= i; c++)
-    {
-        /* Reverse character order */
-        *buf++ = *p--;
-    }
-    *buf = '\0';
-}
-
-static unsigned char * _ltoa(unsigned long l, unsigned char *buf, unsigned char radix)
-{
-#if defined (__TI_COMPILER_VERSION)
-  return ( (unsigned char*)ltoa( l, (char *)buf ) );
-#elif defined( __GNUC__ )
-  return ( (char*)ltoa( l, buf, radix ) );
-#else
-  unsigned char tmp1[10] = "", tmp2[10] = "", tmp3[10] = "";
-  unsigned short num1, num2, num3;
-  unsigned char i;
-
-  buf[0] = '\0';
-
-  if ( radix == 10 )
-  {
-    num1 = l % 10000;
-    num2 = (l / 10000) % 10000;
-    num3 = (unsigned short)(l / 100000000);
-
-    if (num3) _itoa(num3, tmp3, 10);
-    if (num2) _itoa(num2, tmp2, 10);
-    if (num1) _itoa(num1, tmp1, 10);
-
-    if (num3)
-    {
-      strcpy((char*)buf, (char const*)tmp3);
-      for (i = 0; i < 4 - strlen((char const*)tmp2); i++)
-        strcat((char*)buf, "0");
-    }
-    strcat((char*)buf, (char const*)tmp2);
-    if (num3 || num2)
-    {
-      for (i = 0; i < 4 - strlen((char const*)tmp1); i++)
-        strcat((char*)buf, "0");
-    }
-    strcat((char*)buf, (char const*)tmp1);
-    if (!num3 && !num2 && !num1)
-      strcpy((char*)buf, "0");
-  }
-  else if ( radix == 16 )
-  {
-    num1 = l & 0x0000FFFF;
-    num2 = l >> 16;
-
-    if (num2) _itoa(num2, tmp2, 16);
-    if (num1) _itoa(num1, tmp1, 16);
-
-    if (num2)
-    {
-      strcpy((char*)buf,(char const*)tmp2);
-      for (i = 0; i < 4 - strlen((char const*)tmp1); i++)
-        strcat((char*)buf, "0");
-    }
-    strcat((char*)buf, (char const*)tmp1);
-    if (!num2 && !num1)
-      strcpy((char*)buf, "0");
-  }
-  else
-    return NULL;
-
-  return buf;
-#endif
-}
-
 void LCD_DLY_ms(unsigned int ms)
 {
     unsigned int a;
diff --git a/src/example/decode_example/CC26xx/Source/Application/Board/board_uart.c b/src/example/decode_example/CC26xx/Source/Application/Board/board_uart.c
index 4cec0a5..e886c5c 100644
--- a/src/example/decode_example/CC26xx/Source/Application/Board/board_uart.c
+++ b/src/example/decode_example/CC26xx/Source/Application/Board/board_uart.c
@@ -75,12 +75,15 @@
 
 #include "Board.h"
 
+#include "osal.h"
 #include "board_uart.h"
 #include "board_LCD.h"
+#include "utils.h"
+
 #include "../../npi/inc/npi_tl_uart.h"
 
 
-#ifdef NPI_USE_UART
+#if defined NPI_USE_UART
 
 static char tRxBuf[256] = { 0 };
 static char tTxBuf[256] = { 0 };
@@ -126,6 +129,30 @@ void UART_DLY_ms(unsigned int ms)
 }
 
 
+#if defined UART_DEBUG
+
+void PrintString(uint8 *str)
+{
+    UART_WriteTransport(str, (strlen((char*)str)));
+}
+
+
+void PrintValue(char *content, uint32 value, uint8 format)
+{
+    uint8 tmpLen;
+    uint8 buf[UART_BUFFER_SIZE];
+    uint32 err;
+
+    tmpLen = (uint8)strlen((char*)content);
+    memcpy(buf, content, tmpLen);
+    err = (uint32)(value);
+    _ltoa(err, &buf[tmpLen], format);
+    PrintString(buf);
+}
+
+
+#endif
+
 #endif
 
 
diff --git a/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.c b/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.c
deleted file mode 100644
index 54afb61..0000000
--- a/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.c
+++ /dev/null
@@ -1,100 +0,0 @@
-
-
-#include "bcomdef.h"
-#include "util.h"
-#include "stdio.h"
-#include "string.h"
-
-#if 1
-
-#define SEND_BUF_MAX_SIZE   320
-
-static char sendBufForUsart[SEND_BUF_MAX_SIZE] = {0};        //usart send buffer.
-static unsigned short sendWrite = 0;                          //usart send buffer write position.
-static unsigned short sendRead = 0;                           //usart send buffer read position.
-
-bool qq_write(uint8 *WrBuf, unsigned short WrLen)
-{
-    unsigned short emptyLen;
-    unsigned short tmpAddr;
-    unsigned short tmpLen;
-
-    emptyLen = (sendRead+SEND_BUF_MAX_SIZE-(sendWrite+1)) % SEND_BUF_MAX_SIZE;
-    if (emptyLen >= WrLen)
-    {
-         tmpAddr = (sendWrite+WrLen) % SEND_BUF_MAX_SIZE;
-         if (tmpAddr <= sendWrite)            //If Circular array have inverse to begin.
-         {
-              tmpLen =WrLen - tmpAddr;
-              memcpy(&sendBufForUsart[sendWrite], WrBuf, tmpLen);   //bug place
-              memcpy(&sendBufForUsart[0], WrBuf+tmpLen, tmpAddr);    
-         }
-         else
-         {
-              memcpy(&sendBufForUsart[sendWrite], WrBuf, WrLen);
-         }
-         
-         sendWrite = tmpAddr;
-
-         return TRUE;
-    }
-
-    return FALSE;
-}
-
-
-unsigned short qq_read(uint8 *RdBuf, unsigned short RdLen)
-{
-     unsigned short validLen;
-     unsigned short tmpAddr;
-     unsigned short tmpLen;
-
-     validLen = (sendWrite+SEND_BUF_MAX_SIZE-sendRead) % SEND_BUF_MAX_SIZE;
-
-     if(validLen == 0)
-        return 0;
-     
-     if (validLen < RdLen)
-        RdLen = validLen;
-     
-     if (validLen >= RdLen)
-     {
-         tmpAddr = (sendRead+RdLen) % SEND_BUF_MAX_SIZE;
-         if (tmpAddr <= sendRead) //If Circular array have inverse to begin.
-         {
-           tmpLen =RdLen - tmpAddr;
-           memcpy(RdBuf, &sendBufForUsart[sendRead], tmpLen);
-           memcpy(RdBuf+tmpLen, &sendBufForUsart[0], tmpAddr);     
-         }
-         else
-         {
-           memcpy(RdBuf, &sendBufForUsart[sendRead], RdLen);
-         }
-         sendRead = tmpAddr;
-
-    }
-
-    return RdLen;
-}
-
-
-unsigned short qq_total()
-{
-    unsigned short validLen;
-
-    validLen = (sendWrite+SEND_BUF_MAX_SIZE-sendRead) % SEND_BUF_MAX_SIZE;
-
-    return validLen;
-}
-
-void qq_clear()
-{
-    sendWrite = 0;                          //usart send buffer write position.
-    sendRead = 0;                           //usart send buffer read position.
-}
-
-
-#endif
-
-/*********************************************************************
-*********************************************************************/
diff --git a/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.h b/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.h
deleted file mode 100644
index 0105129..0000000
--- a/src/example/decode_example/CC26xx/Source/Application/amomcu_buffer.h
+++ /dev/null
@@ -1,32 +0,0 @@
-
-
-#ifndef AMOMCU_BUFFER_H
-#define AMOMCU_BUFFER_H
-
-#ifdef __cplusplus
-extern "C"
-{
-#endif
-
-
-//写  WrLen 个字节数据到 缓冲区 RdBuf， 返回 true 表示成功， 返回false表示剩余缓冲区放不下这段数据了
-extern bool qq_write(uint8 *WrBuf, unsigned short WrLen);
-
-// 读  RdLen 个字节数据到 缓冲区 RdBuf， 返回读取到的有效数据长度
-extern unsigned short qq_read(uint8 *RdBuf, unsigned short RdLen);
-
-// 读出缓冲区中有效数据的大小，一般用于判断有没有数据可读
-extern unsigned short qq_total();
-
-// 清除缓冲区
-extern void qq_clear();
-
-
-
-
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif
diff --git a/src/example/decode_example/CC26xx/Source/Application/buffer.c b/src/example/decode_example/CC26xx/Source/Application/buffer.c
index 4793179..6502588 100644
--- a/src/example/decode_example/CC26xx/Source/Application/buffer.c
+++ b/src/example/decode_example/CC26xx/Source/Application/buffer.c
@@ -1,42 +1,14 @@
-/*******************************************************************************
-  Filename:       buffer.c
-  Revised:        $Date: 2016-01-07 16:59:59 -0800 (Thu, 07 Jan 2016) $
-  Revision:       $Revision: 44594 $
+/**************************************************************************************
+Filename:       buffer.c
+Revised:        Date: 2017-01-01
+Revision:       Revision: 1.0
 
-  Description:    This file contains the Simple BLE Peripheral sample
-                  application for use with the CC2650 Bluetooth Low Energy
-                  Protocol Stack.
+Description:    This file provides basic buffer support for queue
 
-  Copyright 2013 - 2015 Texas Instruments Incorporated. All rights reserved.
+Revision log:
+* 2017-01-01: created by strawmanbobi
+**************************************************************************************/
 
-  IMPORTANT: Your use of this Software is limited to those specific rights
-  granted under the terms of a software license agreement between the user
-  who downloaded the software, his/her employer (which must be your employer)
-  and Texas Instruments Incorporated (the "License").  You may not use this
-  Software unless you agree to abide by the terms of the License. The License
-  limits your use, and you acknowledge, that the Software may not be modified,
-  copied or distributed unless embedded on a Texas Instruments microcontroller
-  or used solely and exclusively in conjunction with a Texas Instruments radio
-  frequency transceiver, which is integrated into your product.  Other than for
-  the foregoing purpose, you may not use, reproduce, copy, prepare derivative
-  works of, modify, distribute, perform, display or sell this Software and/or
-  its documentation for any purpose.
-
-  YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
-  PROVIDED 揂S IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
-  INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
-  NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
-  TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
-  NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
-  LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
-  INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
-  OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
-  OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
-  (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
-
-  Should you have any questions regarding your right to use this Software,
-  contact Texas Instruments Incorporated at www.TI.com.
-*******************************************************************************/
 
 #include "bcomdef.h"
 #include "util.h"
@@ -60,7 +32,7 @@ bool queue_write(uint8 *WrBuf, unsigned short WrLen)
         tmpAddr = (sendWrite + WrLen) % SEND_BUF_MAX_SIZE;
         if (tmpAddr <= sendWrite)
         {
-            tmpLen =WrLen - tmpAddr;
+            tmpLen = WrLen - tmpAddr;
             memcpy(&sendBufForUsart[sendWrite], WrBuf, tmpLen);
             memcpy(&sendBufForUsart[0], WrBuf+tmpLen, tmpAddr);
         }
diff --git a/src/example/decode_example/CC26xx/Source/Application/buffer.h b/src/example/decode_example/CC26xx/Source/Application/buffer.h
index e58cec6..eaa763b 100644
--- a/src/example/decode_example/CC26xx/Source/Application/buffer.h
+++ b/src/example/decode_example/CC26xx/Source/Application/buffer.h
@@ -1,42 +1,14 @@
-/*******************************************************************************
-  Filename:       buffer.h
-  Revised:        $Date: 2016-01-07 16:59:59 -0800 (Thu, 07 Jan 2016) $
-  Revision:       $Revision: 44594 $
+/**************************************************************************************
+Filename:       buffer.h
+Revised:        Date: 2017-01-01
+Revision:       Revision: 1.0
 
-  Description:    This file contains the Simple BLE Peripheral sample
-                  application for use with the CC2650 Bluetooth Low Energy
-                  Protocol Stack.
+Description:    This file provides basic buffer support for queue
 
-  Copyright 2013 - 2015 Texas Instruments Incorporated. All rights reserved.
+Revision log:
+* 2017-01-01: created by strawmanbobi
+**************************************************************************************/
 
-  IMPORTANT: Your use of this Software is limited to those specific rights
-  granted under the terms of a software license agreement between the user
-  who downloaded the software, his/her employer (which must be your employer)
-  and Texas Instruments Incorporated (the "License").  You may not use this
-  Software unless you agree to abide by the terms of the License. The License
-  limits your use, and you acknowledge, that the Software may not be modified,
-  copied or distributed unless embedded on a Texas Instruments microcontroller
-  or used solely and exclusively in conjunction with a Texas Instruments radio
-  frequency transceiver, which is integrated into your product.  Other than for
-  the foregoing purpose, you may not use, reproduce, copy, prepare derivative
-  works of, modify, distribute, perform, display or sell this Software and/or
-  its documentation for any purpose.
-
-  YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
-  PROVIDED 揂S IS?WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,
-  INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
-  NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
-  TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
-  NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
-  LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
-  INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
-  OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
-  OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
-  (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
-
-  Should you have any questions regarding your right to use this Software,
-  contact Texas Instruments Incorporated at www.TI.com.
-*******************************************************************************/
 
 #ifndef BUFFER_H
 #define BUFFER_H
diff --git a/src/example/decode_example/CC26xx/Source/Application/simpleBLEPeripheral.c b/src/example/decode_example/CC26xx/Source/Application/simpleBLEPeripheral.c
index 2b6967b..f74fb62 100644
--- a/src/example/decode_example/CC26xx/Source/Application/simpleBLEPeripheral.c
+++ b/src/example/decode_example/CC26xx/Source/Application/simpleBLEPeripheral.c
@@ -171,6 +171,10 @@
 static ir_type_t ir_type = IR_TYPE_NONE;
 static ir_state_t ir_state = IR_STATE_NONE;
 
+static int32_t uart_recv_length = 0;
+static int32_t uart_recv_expected_length = 0;
+static int32_t uart_recv_started = 0;
+
 // sample source code
 static uint8_t source_tv[1024] =
 {
@@ -308,16 +312,31 @@ static void IRext_processKey(uint8_t ir_type, uint8_t ir_key, char* key_display)
 static void IRext_processUartMsg(uint8_t* data, uint16_t len)
 {
     uint16_t index = 0;
-    char debug[8] = { 0 };
 
+#if UART_DEBUG
     for (index = 0; index < len; index++)
     {
-        memset(debug, 0x00, 8);
-        sprintf(debug, "%02X,", data[index]);
-        UART_WriteTransport((uint8_t*)debug, strlen(debug));
+        PrintValue(" ", data[index], 16);
         UART_DLY_ms(10);
     }
-    UART_WriteTransport("\n", 1);
+    PrintString("\n");
+#endif
+
+    if (0 == uart_recv_started && len == 4)
+    {
+        uart_recv_expected_length = *(int *)data;
+        PrintValue("payload length = ", uart_recv_expected_length, 10);
+        uart_recv_started = 1;
+    }
+    else
+    {
+        uart_recv_length += len;
+        if (uart_recv_length >= uart_recv_expected_length)
+        {
+            PrintString("all data are received\n");
+            uart_recv_started = 0;
+        }
+    }
 }
 
 /* IREXT - end */
@@ -1112,11 +1131,10 @@ static void SimpleBLEPeripheral_processAppMsg(sbpEvt_t *pMsg)
 
         case SBP_UART_CHANGE_EVT:
         {
-            uint8_t valueToCopy[SIMPLEPROFILE_CHAR6_LEN] = {0};
-            uint8 len = queue_read(valueToCopy, SIMPLEPROFILE_CHAR6_LEN);
+            uint8_t valueToCopy[UART_BUFFER_SIZE] = {0};
+            uint8 len = queue_read(valueToCopy, UART_BUFFER_SIZE);
             if(len > 0)
             {
-                // SimpleProfile_SetParameter(SIMPLEPROFILE_CHAR6, len, valueToCopy);
                 IRext_processUartMsg(valueToCopy, len);
             }
             if(queue_total() > 0)
diff --git a/src/example/decode_example/CC26xx/Source/Application/utils.c b/src/example/decode_example/CC26xx/Source/Application/utils.c
new file mode 100644
index 0000000..62e3b06
--- /dev/null
+++ b/src/example/decode_example/CC26xx/Source/Application/utils.c
@@ -0,0 +1,110 @@
+/**************************************************************************************
+Filename:       utils.c
+Revised:        Date: 2017-02-01
+Revision:       Revision: 1.0
+
+Description:    This file contains utilities for irext sample on CC26XX
+
+Revision log:
+* 2017-02-01: created by strawmanbobi
+**************************************************************************************/
+
+#include <string.h>
+#include <stdlib.h>
+
+#include "utils.h"
+
+
+static void _itoa(unsigned int uiNum, unsigned char *buf, unsigned char uiRadix);
+
+
+static void _itoa(unsigned int uiNum, unsigned char *buf, unsigned char uiRadix)
+{
+    unsigned char c, i;
+    unsigned char *p, rst[32];
+
+    p = rst;
+    for (i = 0; i < 32; i++, p++)
+    {
+        /* Isolate a digit */
+        c = uiNum % uiRadix;
+        /* Convert to Ascii */
+        *p = c + ((c < 10) ? '0' : '7');
+        uiNum /= uiRadix;
+        if (!uiNum)
+            break;
+    }
+
+    for (c = 0; c <= i; c++)
+    {
+        /* Reverse character order */
+        *buf++ = *p--;
+    }
+    *buf = '\0';
+}
+
+
+unsigned char * _ltoa(unsigned long l, unsigned char *buf, unsigned char radix)
+{
+#if defined (__TI_COMPILER_VERSION)
+  return ( (unsigned char*)ltoa( l, (char *)buf ) );
+#elif defined( __GNUC__ )
+  return ( (char*)ltoa( l, buf, radix ) );
+#else
+  unsigned char tmp1[10] = "", tmp2[10] = "", tmp3[10] = "";
+  unsigned short num1, num2, num3;
+  unsigned char i;
+
+  buf[0] = '\0';
+
+  if ( radix == 10 )
+  {
+    num1 = l % 10000;
+    num2 = (l / 10000) % 10000;
+    num3 = (unsigned short)(l / 100000000);
+
+    if (num3) _itoa(num3, tmp3, 10);
+    if (num2) _itoa(num2, tmp2, 10);
+    if (num1) _itoa(num1, tmp1, 10);
+
+    if (num3)
+    {
+      strcpy((char*)buf, (char const*)tmp3);
+      for (i = 0; i < 4 - strlen((char const*)tmp2); i++)
+        strcat((char*)buf, "0");
+    }
+    strcat((char*)buf, (char const*)tmp2);
+    if (num3 || num2)
+    {
+      for (i = 0; i < 4 - strlen((char const*)tmp1); i++)
+        strcat((char*)buf, "0");
+    }
+    strcat((char*)buf, (char const*)tmp1);
+    if (!num3 && !num2 && !num1)
+      strcpy((char*)buf, "0");
+  }
+  else if ( radix == 16 )
+  {
+    num1 = l & 0x0000FFFF;
+    num2 = l >> 16;
+
+    if (num2) _itoa(num2, tmp2, 16);
+    if (num1) _itoa(num1, tmp1, 16);
+
+    if (num2)
+    {
+      strcpy((char*)buf,(char const*)tmp2);
+      for (i = 0; i < 4 - strlen((char const*)tmp1); i++)
+        strcat((char*)buf, "0");
+    }
+    strcat((char*)buf, (char const*)tmp1);
+    if (!num2 && !num1)
+      strcpy((char*)buf, "0");
+  }
+  else
+    return NULL;
+
+  return buf;
+#endif
+}
+
diff --git a/src/example/decode_example/CC26xx/Source/Application/utils.h b/src/example/decode_example/CC26xx/Source/Application/utils.h
new file mode 100644
index 0000000..a6dba76
--- /dev/null
+++ b/src/example/decode_example/CC26xx/Source/Application/utils.h
@@ -0,0 +1,28 @@
+/**************************************************************************************
+Filename:       utils.h
+Revised:        Date: 2017-02-01
+Revision:       Revision: 1.0
+
+Description:    This file contains utilities for irext sample on CC26XX
+
+Revision log:
+* 2017-02-01: created by strawmanbobi
+**************************************************************************************/
+
+#ifndef UTILS_H
+#define UTILS_H
+
+#ifdef __cplusplus
+extern "C"
+{
+#endif
+
+
+extern unsigned char * _ltoa(unsigned long l, unsigned char *buf, unsigned char radix);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+