NAO程序退出后眼睛保持白色（不切换蓝/绿）问题求助

Hey there, let's work through this NAO eye color issue—those visual cues for listening/recognizing are super useful, so it's frustrating when they stop working even though the bot's still responding. Here are the most likely fixes to get those color changes back:

• Always reset LED state on app exit
  The biggest culprit here is usually that your app modified the eye LEDs but didn't revert them to the default behavior when closing. NAO won't automatically reset these settings unless you tell it to. Add a cleanup step in your app's exit logic (like a finally block or an onExit() hook) to reset the face LEDs:

  # Example using Python SDK
  from naoqi import ALProxy
  
  def reset_nao_eyes(robot_ip):
      try:
          led_proxy = ALProxy("ALLed", robot_ip, 9559)
          # Reset all face LEDs to their default dynamic behavior
          led_proxy.reset("FaceLeds")
      except Exception as e:
          print(f"Error resetting LEDs: {e}")
  

  This tells NAO to go back to its built-in behavior—blue when listening, green when recognizing speech.

• Restart relevant NAO modules
  Sometimes even if you reset LEDs, underlying modules might be stuck in a weird state. You can restart the modules that handle speech interaction and LED feedback via SSH or Choreographe:

  • SSH into your NAO, then run these commands:

    # Stop and restart the face detection module
    qicli call ALModuleManager.stopModule ALFaceDetection
    qicli call ALModuleManager.startModule ALFaceDetection
    
    # Do the same for text-to-speech (handles listening cues)
    qicli call ALModuleManager.stopModule ALTextToSpeech
    qicli call ALModuleManager.startModule ALTextToSpeech
    

  • If you prefer Choreographe, drag in "Call a Service" blocks for these ALModuleManager methods and run the flow.

• Check for accidental LED overrides
  Double-check your app code for any lines that directly set the eye color (like fadeRGB or setRGB). If you hardcoded white at any point without resetting it later, NAO will stay stuck there even after the app closes. Make sure any manual LED changes are paired with a reset on exit.

• Manual reset via Choreographe
  If all else fails, create a super simple Choreographe project: just add a "Call a Service" block that calls ALLed.reset("FaceLeds"), then run it on your NAO. This forces a hard reset of the face LED behavior, which should bring back the listening/recognizing color cues.

Most of the time, the first step (resetting LEDs on exit) will fix the problem—it's easy to forget that NAO retains those custom LED settings until explicitly told to revert them.

内容的提问来源于stack exchange，提问作者cactie