Error in audio_helpers while setting volume

[PizlaTheDeveloper]

Hi, I am running google-assistant as grpc service on my RPi-Zero.
I get this error while trying to set volume using assistant (saying "Set volume up/down")

Traceback (most recent call last): File "/usr/lib/python3.5/runpy.py", line 193, in _run_module_as_main "__main__", mod_spec) File "/usr/lib/python3.5/runpy.py", line 85, in _run_code exec(code, run_globals) File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/pushtotalk.py", line 436, in <module> main() File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/click/core.py", line 722, in __call__ return self.main(*args, **kwargs) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/click/core.py", line 697, in main rv = self.invoke(ctx) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/click/core.py", line 895, in invoke return ctx.invoke(self.callback, **ctx.params) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/click/core.py", line 535, in invoke return callback(*args, **kwargs) File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/pushtotalk.py", line 425, in main continue_conversation = assistant.assist() File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/tenacity/__init__.py", line 214, in wrapped_f return self.call(f, *args, **kw) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/tenacity/__init__.py", line 295, in call start_time=start_time) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/tenacity/__init__.py", line 252, in iter return fut.result() File "/usr/lib/python3.5/concurrent/futures/_base.py", line 398, in result return self.__get_result() File "/usr/lib/python3.5/concurrent/futures/_base.py", line 357, in __get_result raise self._exception File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/tenacity/__init__.py", line 298, in call result = fn(*args, **kwargs) File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/pushtotalk.py", line 170, in assist self.conversation_stream.stop_playback() File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/audio_helpers.py", line 288, in stop_playback self._source.stop() File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/audio_helpers.py", line 221, in stop self.flush() File "/home/pi/PiAssistant/assistant-sdk-python/google-assistant-sdk/googlesamples/assistant/grpc/audio_helpers.py", line 211, in flush self._audio_stream.write(b'\x00' * self._flush_size) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/sounddevice.py", line 1202, in write _check(err) File "/home/pi/PiAssistant/env/lib/python3.5/site-packages/sounddevice.py", line 2563, in _check raise PortAudioError(errormsg, err) sounddevice.PortAudioError: Can't write to an input only stream [PaErrorCode -9974]

Any solution for this please?
Thank you

[Fleker]

What happens if you set volume directly "Set volume to ninety percent"?

[PizlaTheDeveloper]

The same result :(
flushing - writing the zeroed array to the stream makes the problem

[PizlaTheDeveloper]

Probably it is the same issue as #185
But I have no problem with no voice command...

[proppy]

@PizlaTheDeveloper can you give a try to #188 ?