diff --git a/src/ir_decoder/include/ir_ac_apply.h b/src/ir_decoder/include/ir_ac_apply.h
index 0e8b5a4..a9dc4d2 100644
--- a/src/ir_decoder/include/ir_ac_apply.h
+++ b/src/ir_decoder/include/ir_ac_apply.h
@@ -19,6 +19,9 @@ extern "C"
 
 #include "ir_decode.h"
 
+#define MIN_TAG_LENGTH_TYPE_1   4
+#define MIN_TAG_LENGTH_TYPE_2   6
+
 INT8 apply_power(t_remote_ac_status ac_status, UINT8 function_code);
 
 INT8 apply_mode(t_remote_ac_status ac_status, UINT8 function_code);
diff --git a/src/ir_decoder/include/ir_ac_control.h b/src/ir_decoder/include/ir_ac_control.h
index 6eeee04..1ce4882 100644
--- a/src/ir_decoder/include/ir_ac_control.h
+++ b/src/ir_decoder/include/ir_ac_control.h
@@ -357,7 +357,7 @@ typedef struct tag_head
 {
     UINT16 tag;
     UINT16 len;
-    unsigned short offset;
+    UINT16 offset;
     UINT8 *p_data;
 } t_tag_head;
 
diff --git a/src/ir_decoder/include/ir_defs.h b/src/ir_decoder/include/ir_defs.h
index 7b60e53..b16e660 100644
--- a/src/ir_decoder/include/ir_defs.h
+++ b/src/ir_decoder/include/ir_defs.h
@@ -29,6 +29,10 @@ extern "C"
 #define TRUE    1
 #define FALSE   0
 
+#define FORMAT_HEX 16
+#define FORMAT_DECIMAL 10
+
+
 typedef unsigned char UINT8;
 typedef signed char INT8;
 typedef unsigned short UINT16;
@@ -39,12 +43,12 @@ typedef int BOOL;
 
 void noprint(const char *fmt, ...);
 
-#if !defined BOARD_CC26XX
-#define ir_malloc(A) malloc(A)
-#define ir_free(A) free(A)
-#else
+#if defined BOARD_CC26XX
 #define ir_malloc(A) ICall_malloc(A)
 #define ir_free(A) ICall_free(A)
+#else
+#define ir_malloc(A) malloc(A)
+#define ir_free(A) free(A)
 #endif
 
 #define ir_memcpy(A, B, C) memcpy(A, B, C)
diff --git a/src/ir_decoder/include/ir_tv_control.h b/src/ir_decoder/include/ir_tv_control.h
index 9e86741..50dfaf4 100644
--- a/src/ir_decoder/include/ir_tv_control.h
+++ b/src/ir_decoder/include/ir_tv_control.h
@@ -73,7 +73,7 @@ typedef struct ir_data
     UINT8 index;
 } t_ir_data;
 
-#if !defined BOARD_51
+#if !defined BOARD_51 && !defined BOARD_STM8
 #pragma pack(1)
 #endif
 typedef struct ir_cycles
@@ -83,7 +83,7 @@ typedef struct ir_cycles
     UINT16 space;
 } t_ir_cycles;
 
-#if !defined BOARD_51
+#if !defined BOARD_51 && !defined BOARD_STM8
 #pragma pack()
 #endif
 
diff --git a/src/ir_decoder/include/ir_utils.h b/src/ir_decoder/include/ir_utils.h
index 33871a3..667bdf1 100644
--- a/src/ir_decoder/include/ir_utils.h
+++ b/src/ir_decoder/include/ir_utils.h
@@ -28,6 +28,8 @@ extern void string_to_hex_common(UINT8 *p, UINT8 *hex_data, UINT16 len);
 
 extern BOOL is_in(const UINT8 *array, UINT8 value, UINT8 len);
 
+extern void hex_byte_to_double_char(char *dest, UINT8 length, UINT8 src);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/ir_decoder/src/ir_ac_binary_parse.c b/src/ir_decoder/src/ir_ac_binary_parse.c
index 747a8b8..3765810 100644
--- a/src/ir_decoder/src/ir_ac_binary_parse.c
+++ b/src/ir_decoder/src/ir_ac_binary_parse.c
@@ -49,7 +49,13 @@ INT8 binary_parse_offset()
     for (i = 0; i < tag_count; i++)
     {
         tags[i].tag = tag_index[i];
+
+#if defined BOARD_STM8 && defined COMPILER_IAR
+        UINT16 offset = *(phead + i);
+        tags[i].offset = (offset >> 8) | (offset << 8);
+#else
         tags[i].offset = *(phead + i);
+#endif
 
         if (tags[i].offset == TAG_INVALID)
         {
@@ -96,7 +102,7 @@ INT8 binary_parse_len()
 
 void binary_tags_info()
 {
-#if defined BOARD_PC
+#if defined BOARD_PC && defined DEBUG
     UINT16 i = 0;
     for (i = 0; i < tag_count; i++)
     {
diff --git a/src/ir_decoder/src/ir_ac_control.c b/src/ir_decoder/src/ir_ac_control.c
index 2bd8219..aebc888 100644
--- a/src/ir_decoder/src/ir_ac_control.c
+++ b/src/ir_decoder/src/ir_ac_control.c
@@ -87,6 +87,7 @@ INT8 ir_ac_lib_parse()
                 context->si.type = SWING_TYPE_NORMAL;
                 context->si.mode_count = 2;
             }
+            break;
             context->si.dir_index = 0;
         }
     }
diff --git a/src/ir_decoder/src/ir_ac_parse_parameter.c b/src/ir_decoder/src/ir_ac_parse_parameter.c
index 70137bd..e5c8cea 100644
--- a/src/ir_decoder/src/ir_ac_parse_parameter.c
+++ b/src/ir_decoder/src/ir_ac_parse_parameter.c
@@ -96,7 +96,6 @@ INT8 parse_common_ac_parameter(t_tag_head *tag, t_tag_comp *comp_data, UINT8 wit
     string_to_hex_common(tag->p_data, hex_data, hex_len);
 
     // parse hex data to AC data structure
-    //*comp_len = hex_len;
 
     if (AC_PARAMETER_TYPE_1 == type)
     {
@@ -138,14 +137,11 @@ INT8 parse_common_ac_parameter(t_tag_head *tag, t_tag_comp *comp_data, UINT8 wit
 
 INT8 parse_default_code(struct tag_head *tag, t_ac_hex *default_code)
 {
-    UINT16 byteLen = 0;
-
     if (NULL == tag)
     {
         return IR_DECODE_FAILED;
     }
 
-    byteLen = tag->len >> 1;
     string_to_hex(tag->p_data, default_code);
 
     return IR_DECODE_SUCCEEDED;
diff --git a/src/ir_decoder/src/ir_tv_control.c b/src/ir_decoder/src/ir_tv_control.c
index f2dbde2..78cb9b9 100644
--- a/src/ir_decoder/src/ir_tv_control.c
+++ b/src/ir_decoder/src/ir_tv_control.c
@@ -13,6 +13,8 @@ Revision log:
 
 #include "../include/ir_defs.h"
 #include "../include/ir_decode.h"
+#include "../include/ir_tv_control.h"
+
 
 struct buffer
 {
diff --git a/src/ir_decoder/src/ir_utils.c b/src/ir_decoder/src/ir_utils.c
index e1a972a..6867df7 100644
--- a/src/ir_decoder/src/ir_utils.c
+++ b/src/ir_decoder/src/ir_utils.c
@@ -53,6 +53,37 @@ void string_to_hex(UINT8 *p, t_ac_hex *pac_hex)
     }
 }
 
+char hex_half_byte_to_single_char(UINT8 length, UINT8 half_byte)
+{
+    if (1 != length || half_byte >= 16)
+    {
+        return '0';
+    }
+    if (half_byte >= 10 && half_byte < 16)
+    {
+        return (char) (half_byte - 10 + 0x41);
+    }
+    else
+    {
+        return (char) (half_byte + 0x30);
+    }
+}
+
+void hex_byte_to_double_char(char *dest, UINT8 length, UINT8 src)
+{
+    UINT8 hi_num = 0;
+    UINT8 lo_num = 0;
+    if (NULL == dest || 2 != length)
+    {
+        return;
+    }
+    hi_num = (UINT8) ((src >> 4) & 0x0F);
+    lo_num = (UINT8) (src & 0x0F);
+
+    dest[0] = hex_half_byte_to_single_char(1, hi_num);
+    dest[1] = hex_half_byte_to_single_char(1, lo_num);
+}
+
 BOOL is_in(const UINT8 *array, UINT8 value, UINT8 len)
 {
     UINT16 i = 0;