diff --git a/heart_rate_sensor_protocol.h b/heart_rate_sensor_protocol.h
index a5cb2b7..9b4c1ca 100644
--- a/heart_rate_sensor_protocol.h
+++ b/heart_rate_sensor_protocol.h
@@ -20,6 +20,7 @@ typedef enum {
   kifyhrs_ecode_hardware_error    = 5,
   kifyhrs_ecode_sensor_drop       = 6,
   kifyhrs_ecode_no_record_find    = 7,
+  kifyhrs_ecode_parameter_error   = 8,
 } ify_hrs_error_code_t;
 
 typedef enum {
@@ -46,22 +47,25 @@ typedef enum {
 } ify_hrs_sensor_pos_t;
 
 typedef enum {
-  ify_hrs_cmd_read_device_version   = 1,
-  ify_hrs_cmd_read_sensor_info      = 2,
-  ify_hrs_cmd_read_device_state     = 3,
-  ify_hrs_cmd_read_time             = 4,
-  ify_hrs_cmd_sync_time             = 5,
-  ify_hrs_cmd_start_capture         = 6,
-  ify_hrs_cmd_stop_capture          = 7,
-  ify_hrs_cmd_start_realtime_report = 8,
-  ify_hrs_cmd_stop_realtime_report  = 9,
-  ify_hrs_cmd_read_records_info     = 10,
-  ify_hrs_cmd_del_record            = 11,
-  ify_hrs_cmd_start_upload_record   = 12,
-  ify_hrs_cmd_enter_ota             = 13,
-  ify_hrs_cmd_read_sn               = 14,
-  ify_hrs_cmd_reset                 = 15,
-  ify_hrs_cmd_stop_upload_record    = 16,
+  ify_hrs_cmd_read_device_version    = 1,
+  ify_hrs_cmd_read_sensor_info       = 2,
+  ify_hrs_cmd_read_device_state      = 3,
+  ify_hrs_cmd_read_time              = 4,
+  ify_hrs_cmd_sync_time              = 5,
+  ify_hrs_cmd_start_capture          = 6,
+  ify_hrs_cmd_stop_capture           = 7,
+  ify_hrs_cmd_start_realtime_report  = 8,
+  ify_hrs_cmd_stop_realtime_report   = 9,
+  ify_hrs_cmd_read_records_info      = 10,
+  ify_hrs_cmd_del_record             = 11,
+  ify_hrs_cmd_start_upload_record    = 12,
+  ify_hrs_cmd_enter_ota              = 13,
+  ify_hrs_cmd_read_sn                = 14,
+  ify_hrs_cmd_reset                  = 15,
+  ify_hrs_cmd_stop_upload_record     = 16,
+  ify_hrs_cmd_start_capture_time_v2  = 17,
+  ify_hrs_cmd_start_upload_record_v2 = 18,
+
   ify_hrs_report_heartrate_data     = 101,
   ify_hrs_report_battery_level      = 102,
   ify_hrs_report_low_battey_level   = 103,