[otci] fix command issue after factoryreset (openthread#6670)

tools/otci/otci/command_handlers.py

@@ -95,7 +95,10 @@ def __repr__(self):
     def execute_command(self, cmd, timeout=10) -> List[str]:
         self.__otcli.writeline(cmd)
 
-        if cmd in {'reset', 'factoryreset'}:
+        if cmd in ('reset', 'factoryreset'):
+            self.wait(3)
+            self.__otcli.writeline('extaddr')
+            self.wait(1)
             return []
 
         if self.__expect_command_echoback:
@@ -210,6 +213,10 @@ def execute_command(self, cmd: str, timeout: float) -> List[str]:
             raise CommandError(cmd, [err])
 
         output = [l.rstrip('\r\n') for l in cmd_out.readlines()]
+
+        if cmd in ('reset', 'factoryreset'):
+            self.wait(3)
+
         return output
 
     def close(self):

tools/otci/otci/otci.py

@@ -29,7 +29,6 @@
 import ipaddress
 import logging
 import re
-import time
 from collections import Counter
 from typing import List, Collection, Union, Tuple, Optional, Dict, Pattern, Any
 
@@ -105,7 +104,6 @@ def execute_command(self, cmd: str, timeout: float = 10, silent: bool = False) -
                 self.__logger and self.__logger.info('%s', line)
 
         if cmd in ('reset', 'factoryreset'):
-            self.__wait_reset()
             return output
 
         if output[-1] == 'Done':
@@ -2335,12 +2333,6 @@ def __escape_escapable(self, s: str) -> str:
             s = s.replace(char, '\\%s' % char)
         return s
 
-    def __wait_reset(self):
-        # reset would restart the otbr-agent executable. It's risky to send commands after reset too quickly because
-        # it might cause ot-ctl to quit abnormally.
-        # So we sleep for a while after reset.
-        time.sleep(3)
-
     def __txt_to_hex(self, txt: Dict[str, Union[str, bytes, bool]]) -> str:
         txt_bin = b''
         for k, v in txt.items():