diff --git a/iflytop_canbus_protocol.hpp b/iflytop_canbus_protocol.hpp
index 1281ed6..5fd8452 100644
--- a/iflytop_canbus_protocol.hpp
+++ b/iflytop_canbus_protocol.hpp
@@ -126,8 +126,34 @@ typedef enum {
 
 static inline const char *ErrorCodeToString(uint32_t code) {
   switch (code) {
+    case kerr_noerror:
+      return "noerror";
+    case kerr_overtime:
+      return "overtime";
+    case kerr_invalid_param:
+      return "invalid_param";
+    case kerr_invalid_param_num:
+      return "invalid_param_num";
+    case kerr_subdevice_offline:
+      return "subdevice_offline";
+    case kerr_motor_reset_error:
+      return "motor_reset_error";
+    case kerr_motor_subdevice_offline:
+      return "motor_subdevice_offline";
+    case kerr_motor_driver_error:
+      return "motor_driver_error";
+    case kerr_motor_undervoltage_error:
+      return "motor_undervoltage_error";
+    case kerr_AirBlowerError:
+      return "AirBlowerError";
+    case kerr_HeaterError:
+      return "HeaterError";
+    case kerr_BlowerError:
+      return "BlowerError";
+    case kerr_ProportionalValveError:
+      return "ProportionalValveError";
     default:
-      return "unkown error";
+      return "unkown";
   }
 }
 typedef enum {
@@ -139,7 +165,7 @@ typedef enum {
   kcmd_force_report       = 2,   // cmd:no,                 ack:none
   kcmd_read_sysinfo       = 3,   // cmd:no,                 ack:ack_sysinfo_t
   kcmd_read_taskinfo      = 4,   // cmd:taskoff,            ack:ask_taskinfo_t
-  kcmd_heart_ping         = 5,   // cmd:taskoff,            ack:ask_taskinfo_t
+  kcmd_heart_ping         = 5,   // cmd:pingindex,            ack:ask_taskinfo_t
   kcmd_clear_reset_flag   = 6,   // cmd:taskoff,            ack:ask_taskinfo_t
   kreport_heatpacket_pong = 50,  // cmd:no                  ack:no                      report:heatpacket_t
   kreport_exception_error = 51,  // report:error_code,subid
@@ -187,9 +213,9 @@ typedef enum {
   /***********************************************************************************************************************
    *                                                   压力传感器数据上报                                                  *
    ***********************************************************************************************************************/
-  kcmd_read_pressure_data                 = 400,  // cmd:subid      ack:pressure(0.1pa)
-  kcmd_set_pressure_data_report_period_ms = 401,  // cmd:subid,period
-  kreport_pressure_data                   = 450,  // report:subid pressure(0.1pa)
+  kcmd_pressure_sensor_bus_read_data            = 400,  // cmd:subid      ack:pressure(0.1pa)
+  kcmd_pressure_sensor_bus_set_report_period_ms = 401,  // cmd:subid,period
+  kreport_pressure_data                         = 450,  // report:subid pressure(0.1pa)
 
 #if 0