Prevent ASR while impedance mode is active

src/explorepy/_exceptions.py

@@ -62,6 +62,16 @@ class BleDisconnectionFailedError(Exception):
     pass
 
 
+class ImpedanceModeActiveError(Exception):
+    """
+    Exception for ASR, raised when impedance is running
+    """
+
+    def __init__(self, message="ASR can not run because impedance mode is active.\n"
+                               "Please disable impedance and try again\n"):
+        super().__init__(message)
+
+
 class ExplorePyDeprecationError(Exception):
     def __init__(self, message="Explorepy support for legacy devices is deprecated.\n"
                                "Please install explorepy 3.2.1 from Github or use the following command from Anaconda "

src/explorepy/explore.py

@@ -734,7 +734,7 @@ def get_channel_mask(self):
         return SettingsManager(self.device_name).get_adc_mask()
 
     def is_asr_processor_available(self):
-        return self.stream_processor.asr_processor is not None and self.stream_processor.asr_processor.is_initialized
+        return self.stream_processor.is_asr_processor_available()
 
     def calibrate_asr(self, length=-1.0):
         if self.is_asr_processor_available():

src/explorepy/stream_processor.py

@@ -15,6 +15,7 @@
 
 import numpy as np
 
+from explorepy._exceptions import ImpedanceModeActiveError
 from explorepy.asr_processor import AsrProcessor
 from explorepy.command import (
     DeviceConfiguration,
@@ -619,3 +620,8 @@ def get_power_line_freq(self):
         )
 
         return match.cutoff_freq if match else None
+
+    def is_asr_processor_available(self):
+        if self.is_imp_running():
+            raise ImpedanceModeActiveError()
+        return self.asr_processor is not None and self.asr_processor.is_initialized