在树莓派零 w

问题描述

我在 RaspBerry Pi Zero W 上使用 Adafruit Voice Bonnet 并尝试在其上运行 Google Assistant。

我已按照以下步骤设置 Bonnet https://cdn-learn.adafruit.com/downloads/pdf/adafruit-voice-bonnet.pdf?timestamp=1614510346

我已按照以下步骤设置助手 https://cdn-learn.adafruit.com/downloads/pdf/using-google-assistant-on-the-braincraft-hat.pdf?timestamp=1614510348，并检查我是否遵循 Google 自己的文档 https://developers.google.com/assistant/sdk/guides/service/python

扬声器和麦克风的测试都通过了（我可以用麦克风录音，用扬声器播放声音）

当我尝试使用我的设备和项目 ID 运行 googlesamples-assistant-pushtotalk 时 - 它能够打印出我提出的问题（例如 INFO:root:Transcript of user request: "what is the time".）并停止录制。 但是，在尝试播放助手响应后，我收到此错误日志

INFO:root:Playing assistant response.
Expression 'alsa_snd_pcm_poll_descriptors_revents( self->pcm,pfds,self->nfds,&revents )' Failed in 'src/hostapi/alsa/pa_linux_alsa.c',line: 3659
Expression 'PaAlsaStreamComponent_EndPolling( &self->playback,playbackPfds,&pollPlayback,&xrun )' Failed in 'src/hostapi/alsa/pa_linux_alsa.c',line: 3880
Expression 'PaAlsaStream_WaitForFrames( stream,&framesAvail,line: 4477
Traceback (most recent call last):
  File "/home/pi/env/bin/googlesamples-assistant-pushtotalk",line 8,in <module>
    sys.exit(main())
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py",line 722,in __call__
    return self.main(*args,**kwargs)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py",line 697,in main
    rv = self.invoke(ctx)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py",line 895,in invoke
    return ctx.invoke(self.callback,**ctx.params)
  File "/home/pi/env/lib/python3.7/site-packages/click/core.py",line 535,in invoke
    return callback(*args,**kwargs)
  File "/home/pi/env/lib/python3.7/site-packages/googlesamples/assistant/grpc/pushtotalk.py",line 458,in main
    continue_conversation = assistant.assist()
  File "/home/pi/env/lib/python3.7/site-packages/tenacity/__init__.py",line 241,in wrapped_f
    return self.call(f,*args,**kw)
  File "/home/pi/env/lib/python3.7/site-packages/tenacity/__init__.py",line 330,in call
    start_time=start_time)
  File "/home/pi/env/lib/python3.7/site-packages/tenacity/__init__.py",line 279,in iter
    return fut.result()
  File "/usr/lib/python3.7/concurrent/futures/_base.py",line 425,in result
    return self.__get_result()
  File "/usr/lib/python3.7/concurrent/futures/_base.py",line 384,in __get_result
    raise self._exception
  File "/home/pi/env/lib/python3.7/site-packages/tenacity/__init__.py",line 333,in call
    result = fn(*args,line 154,in assist
    self.conversation_stream.write(resp.audio_out.audio_data)
  File "/home/pi/env/lib/python3.7/site-packages/googlesamples/assistant/grpc/audio_helpers.py",line 327,in write
    return self._sink.write(buf)
  File "/home/pi/env/lib/python3.7/site-packages/googlesamples/assistant/grpc/audio_helpers.py",line 206,in write
    underflow = self._audio_stream.write(buf)
  File "/home/pi/env/lib/python3.7/site-packages/sounddevice.py",line 1325,in write
    _check(err)
  File "/home/pi/env/lib/python3.7/site-packages/sounddevice.py",line 2736,in _check
    raise PortAudioError(errormsg,err,hosterror_info)
sounddevice.PortAudioError: Unanticipated host error [PaErrorCode -9999]: 'Input/output error' [ALSA error -5]

我的.asoundrc文件如下

pcm.!default {
  type asym
  capture.pcm "mic"
  playback.pcm "speaker"
}
pcm.mic {
  type plug
  slave {
    pcm "hw:0,0"
    rate 16000
  }
}
pcm.speaker {
  type plug
  slave {
    pcm "hw:0,0"
    rate 16000
  }
}

（匹配麦克风和扬声器的设备和卡槽）

我是 python 和 raspBerry pi 的新手，所以我不知道从哪里开始，除了我可以从日志中看到错误是由 https://github.com/spatialaudio/python-sounddevice/blob/f063cd1b427b90907a671a7be4427f6c2290914c/sounddevice.py#L1325 抛出的（我认为？）

此处由 Google 助理 audio_helpers.py 调用：https://github.com/googlesamples/assistant-sdk-python/blob/ce76c508fdf07667849689e01a294db2c6e1a674/google-assistant-sdk/googlesamples/assistant/grpc/audio_helpers.py#L206

如果有人有任何想法，我将非常感谢您的帮助！

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

小编邮箱:dio#foxmail.com (将#修改为@）