muffle at detection error messages

Author: maxd-nordic

src/nrfcredstore/command_interface.py

@@ -100,7 +100,7 @@ def detect_shell_mode(self):
         """Detect if the device is in shell mode or not."""
         for _ in range(3):
             self.write_raw("at AT+CGSN")
-            result, output = self.comms.expect_response("OK", "ERROR", "")
+            result, output = self.comms.expect_response("OK", "ERROR", "", suppress_errors=True)
             if result and len(re.findall("[0-9]{15}", output)) > 0:
                 self.set_shell_mode(True)
                 return
@@ -110,15 +110,15 @@ def enable_error_codes(self):
         """Enable error codes in the AT client"""
         self.at_command('AT+CMEE=1', wait_for_result=True)
 
-    def at_command(self, at_command, wait_for_result=False):
+    def at_command(self, at_command, wait_for_result=False, suppress_errors=False):
         """Write an AT command to the command interface. Optionally wait for OK"""
 
         # AT commands are written directly as-is with the ATCommandInterface:
         at_cmd_prefix = 'at ' if self.shell else ''
         self.write_raw(f'{at_cmd_prefix}{at_command}')
 
         if wait_for_result:
-            result, _ = self.comms.expect_response("OK", "ERROR")
+            result, _ = self.comms.expect_response("OK", "ERROR", suppress_errors=suppress_errors)
             return result
         else:
             return True

src/nrfcredstore/comms.py

@@ -331,7 +331,7 @@ def close(self):
             self.serial_api.close()
             self.serial_api = None
 
-    def expect_response(self, ok_str=None, error_str=None, store_str=None, timeout=15):
+    def expect_response(self, ok_str=None, error_str=None, store_str=None, timeout=15, suppress_errors=False):
         '''
         Read lines until either ok_str or error_str is found or timeout (seconds) is reached.
         If store_str is in one of the lines, it will be returned as the output.
@@ -349,7 +349,8 @@ def expect_response(self, ok_str=None, error_str=None, store_str=None, timeout=1
                     return (False, output)
                 if line.startswith('+CME ERROR'):
                     code = int(line.replace('+CME ERROR: ', ''))
-                    logging.error(f'AT command error: {ERR_CODE_TO_MSG.get(code, "Unknown error")}')
+                    if not suppress_errors:
+                        logging.error(f'AT command error: {ERR_CODE_TO_MSG.get(code, "Unknown error")}')
                     return (False, output)
                 if (store_str is not None) and store_str in line:
                     output += line + '\r\n'