How to Add Switch to trigger Google Assistant ?

[Kinjalk]

Please can you help me with adding switch to trigger google assistant ? Pressing enter every time is very annoying

[proppy]

See the Google+ discussion about a similar topic.

[oscartprom]

We have an example of this in the Mocktails Mixer write-up. Instructions to wire the button are here and the code is here (lines of interest are mainly 150-181).

[capitalfuse]

sysfs method;
Pushed a switch and turn on the LED, talt to the mic and output the voice from google, and turn off the LED. Repeat this process again pushed a switch.
1. Add import sys library

import json
import logging
import os.path
import sys

2.Add the followings definitions

def read_button():
    fp1 = open("/sys/class/gpio/gpio6/value","r")
    value = fp1.read()
    return int(value)
    fp1.close()

def write_led(value):
    fp2 =  open("/sys/class/gpio/gpio20/value","w")
    fp2.write(str(value))
    fp2.close()

3. Modify the code

        while True:
            if wait_for_user_trigger:
                while True:                
                    #print(read_button())
                    button_status = read_button()
                    if button_status == 1:
                        break
            write_led(1)
                #click.pause(info='Press Enter to send a new request...')
            continue_conversation = assistant.converse()
            # wait for user trigger if there is no follow-up turn in
            # the conversation.
            wait_for_user_trigger = not continue_conversation
            write_led(0)
            # If we only want one conversation, break.
            if once and (not continue_conversation):
                break