diff --git a/iflytop_canbus_protocol.hpp b/iflytop_canbus_protocol.hpp
index 6cc1add..39183a1 100644
--- a/iflytop_canbus_protocol.hpp
+++ b/iflytop_canbus_protocol.hpp
@@ -1,7 +1,8 @@
 #pragma once
 #include <stdint.h>
 
-#define PROTOCOL_VERSION 1
+#define PROTOCOL_VERSION       1
+#define HEART_PACKET_PERIOD_MS (5 * 1000)
 
 extern "C" {
 #pragma pack(1)
@@ -67,7 +68,7 @@ typedef enum {
 
 } ErrorCode_t;
 
-static const char *ErrorCodeToString(uint32_t code) {
+static inline const char *ErrorCodeToString(uint32_t code) {
   switch (code) {
     case kerr_noerror:
       return "no error";
@@ -94,6 +95,7 @@ typedef enum {
    *                                                    板子基本操作                                                     *
    ***********************************************************************************************************************/
   kcmd_read_board_info    = 1,   // cmd:no,                 ack:read_board_info_ack_t
+  kcmd_force_report       = 2,   // cmd:no,                 ack:read_board_info_ack_t
   kreport_heatpacket      = 50,  // cmd:no                  ack:no                      report:heatpacket_t
   kreport_exception_error = 51,  // report:error_code,subid
 
@@ -232,16 +234,14 @@ typedef enum {
 
 } cmd_t;
 
-#define HEART_OVERTIME_MS (10 * 1000)
-
 #pragma pack(1)
 
 /***********************************************************************************************************************
  *                                                         ACK                                                         *
  ***********************************************************************************************************************/
 typedef struct {
-  uint8_t  boardType;
-  uint8_t  projectId;
+  uint16_t boardType;
+  uint16_t projectId;
   uint16_t protcol_version;
   uint16_t software_version;
   uint16_t hardware_version;