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Today's Topics:
1. Re: Within py script, using Motion app (standalone, not
MotionEyeOS) in conjunction with button presses (rmbusy)
----------------------------------------------------------------------
Message: 1
Date: Mon, 21 Sep 2020 09:41:27 -0700
From: rmbusy <rmbusy+mot...@gmail.com>
To: motion-user@lists.sourceforge.net
Subject: Re: [Motion-user] Within py script, using Motion app
(standalone, not MotionEyeOS) in conjunction with button presses
Message-ID: <1b493788-56d2-3520-5c83-95b508042...@gmail.com>
Content-Type: text/plain; charset="utf-8"; Format="flowed"
I'm sure someone will ask, what camera are you using?? If it's an IP
camera, it probably has multiple stream interfaces, and a snapshot URL
address.? Someone will probably want to know what hardware you're
running Motion and your script on too.
--
Rob.
On 9/21/20 8:56 AM, Kevin Roy wrote:
>
> First time I've posted to the mailing list - apologies in advance if I
> have messed something up.
>
>
> I have a python script (doorbell.py) that, upon a button press, it
> takes a picture, plus a few other things like rings a bell and sends
> an MQTT msg to Home Assistant.
>
>
> While the button is inactive/NOT being pressed, I'd like to have
> Motion running for motion detection purposes, and eventually do some
> object recognition. However, if I start/run Motion in one command line
> tab, and run the doorbell.py script in a another, when the button is
> pressed, the doorbell.py script fails because the camera is already in
> use by Motion.
>
>
> So, I tried to integrate turning motion on and off from within the
> doorbell.py script with '''subprocess.call'''. Before integrating any
> subprocess.call's into the doorbell.py script, I verified these work
> when run as independent py script, and they do work (scripts below).
>
> |#start_motion.py|
>
> |import subprocess|
>
> |subprocess.call| <https://subprocess.call/>|(["motion", "-n"])|
>
>
> |#stop_motion.py|
>
> |import subprocess|
>
> |subprocess.call| <https://subprocess.call/>|(["pkill", "-15", "motion"])|
>
>
> So, I integrated them into the main doorbell.py script. In the
> beginning of doorbell.py, Motion is started/turned on. When a button
> press is detected, I tried to turn Motion off via
> ```subprocess.call(["pkill", "-15", "motion"])``` but it appears to
> never recognizes the button press - though I am unsure why.
>
>
> How could I modify this to make it work - or is there another
> better/more simple method I could employ here??Here is the full
> doorbell.py script. Be kind, I'm a python (and Motion) noob!
>
>
> |import RPi.GPIO as GPIO|
>
> |import time|
>
> |import picamera|
>
> |import datetime as dt|
>
> |import sys|
>
> |import paho.mqtt.client as mqtt # import the MQTT library|
>
> |import subprocess|
>
>
>
> |# Start Motion app|
>
> |subprocess.call| <https://subprocess.call/>|(["motion", "-n"])|
>
>
>
> |#def MQTT messagefunction here|
>
> |def messageFunction (client, userdata, message):|
>
> |topic = str(message.topic)|
>
> |message = str(message.payload.decode("utf-8"))|
>
> |print("MQTT Topic: " + topic + "/" + message)|
>
>
> |# Set up MQTT client and server connection|
>
> |MQTTClient=mqtt.Client("pi3a_mqtt")|
>
> |MQTTClient.username_pw_set(username="*********", password="*********")|
>
> |MQTTClient.connect("||192.168.1.237| <https://192.168.1.237/>|", 1883)|
>
> |MQTTClient.subscribe("DOORBELL")|
>
> |MQTTClient.on_message = messageFunction|
>
> |MQTTClient.loop_start()|
>
>
> |# Set up GPIO mode and assignments|
>
> |GPIO.setmode(GPIO.BCM)|
>
> |buttonPIN = 18 # Button PIN|
>
> |GPIO.setup(buttonPIN,| |GPIO.IN| <https://gpio.in/>|,
> pull_up_down=GPIO.PUD_DOWN)|
>
>
>
> |# Copied code for buzzer music|
>
> |class Buzzer(object):|
>
> |def __init__(self):|
>
> |GPIO.setmode(GPIO.BCM)|
>
> |self.buzzer_pin = 14 #set to GPIO pin 14|
>
> |GPIO.setup(self.buzzer_pin,| |GPIO.IN| <https://gpio.in/>|)|
>
> |GPIO.setup(self.buzzer_pin, GPIO.OUT)|
>
> |print("buzzer ready")|
>
>
> |def __del__(self):|
>
> |class_name = self.__class__.__name__|
>
> |print (class_name, "finished")|
>
>
> |def buzz(self,pitch, duration): #create the function ?buzz? and feed
> it the pitch and duration)|
>
> |if(pitch==0):|
>
> |time.sleep(duration)|
>
> |return|
>
> |period = 1.0 / pitch #in physics, the period (sec/cyc) is the inverse
> of the frequency (cyc/sec)|
>
> |delay = period / 2 #calcuate the time for half of the wave|
>
> |cycles = int(duration * pitch) #the number of waves to produce is the
> duration times the frequency|
>
>
> |for i in range(cycles): #start a loop from 0 to the variable ?cycles?
> calculated above|
>
> |GPIO.output(self.buzzer_pin, True) #set pin 18 to high|
>
> |time.sleep(delay) #wait with pin 18 high|
>
> |GPIO.output(self.buzzer_pin, False) #set pin 18 to low|
>
> |time.sleep(delay) #wait with pin 18 low|
>
>
> |def play(self, tune):|
>
> |GPIO.setmode(GPIO.BCM)|
>
> |GPIO.setup(self.buzzer_pin, GPIO.OUT)|
>
> |x=0|
>
>
> |print("Playing tune ",tune)|
>
> |if(tune==1):|
>
> |pitches=[262,294,330]#,349,392,440,494,523, 587,
> 659,698,784,880,988,1047]|
>
> |duration=0.1|
>
> |for p in pitches:|
>
> |self.buzz| <https://self.buzz/>|(p, duration) #feed the pitch and
> duration to the function, ?buzz?|
>
> |time.sleep(duration *2)|
>
> |# for p in reversed(pitches):|
>
> |#| |self.buzz| <https://self.buzz/>|(p, duration)|
>
> |# time.sleep(duration *0.5)|
>
>
> |elif(tune==2):|
>
> |pitches=[262,330,392,523,1047]|
>
> |duration=[0.2,0.2,0.2,0.2,0.2,0,5]|
>
> |for p in pitches:|
>
> |self.buzz| <https://self.buzz/>|(p, duration[x]) #feed the pitch and
> duration to the function, ?buzz?|
>
> |time.sleep(duration[x] *0.5)|
>
> |x+=1|
>
> |elif(tune==3):|
>
> |pitches=[392,294,0,392,294,0,392,0,392,392,392,0,1047,262]|
>
> |duration=[0.2,0.2,0.2,0.2,0.2,0.2,0.1,0.1,0.1,0.1,0.1,0.1,0.8,0.4]|
>
> |for p in pitches:|
>
> |self.buzz| <https://self.buzz/>|(p, duration[x]) #feed the pitch and
> duration to the func$|
>
> |time.sleep(duration[x] *0.5)|
>
> |x+=1|
>
>
> |elif(tune==4):|
>
> |pitches=[1047, 988,659]|
>
> |duration=[0.1,0.1,0.2]|
>
> |for p in pitches:|
>
> |self.buzz| <https://self.buzz/>|(p, duration[x]) #feed the pitch and
> duration to the func$|
>
> |time.sleep(duration[x] *0.5)|
>
> |x+=1|
>
>
> |elif(tune==5):|
>
> |pitches=[1047, 988,523]|
>
> |duration=[0.1,0.1,0.2]|
>
> |for p in pitches:|
>
> |self.buzz| <https://self.buzz/>|(p, duration[x]) #feed the pitch and
> duration to the func$|
>
> |time.sleep(duration[x] *0.5)|
>
> |x+=1|
>
>
> |GPIO.setup(self.buzzer_pin,| |GPIO.IN| <https://gpio.in/>|)|
>
>
>
>
> |# Detect Button Press on GPIO 18|
>
> |# If button press detected:|
>
> |# Stop Motion app|
>
> |# Take picture|
>
> |# Ring buzzer|
>
> |# Send MQTT msg|
>
> |# Restart Motion app|
>
> |# If not, clean up GPIO pins|
>
> |while True:|
>
> |input_state = GPIO.input(buttonPIN)|
>
> |if input_state == True:|
>
> |subprocess.call| <https://subprocess.call/>|(["pkill", "-15", "motion"])|
>
> |print('Button Pressed')|
>
> |# MQTTClient.publish("DOORBELL", "on") # Publish message to MQTT broker|
>
> |# # buzzer.start(10) # Set dutycycle to 10|
>
>
> |# if __name__ == "__main__":|
>
> |# a = 1|
>
> |# buzzer = Buzzer()|
>
> |#| |buzzer.play| <https://buzzer.play/>|(int(a))|
>
> |time.sleep(0.3)|
>
> |with picamera.PiCamera() as camera:|
>
> |camera.resolution = (800, 600)|
>
> |camera.annotate_background = picamera.Color('black')|
>
> |camera.annotate_text =| |dt.datetime.now|
> <https://dt.datetime.now/>|().strftime('%Y-%m-%d %H:%M:%S')|
>
> |camera.start_preview()|
>
> |camera.capture('doorbell.jpg', use_video_port=True)|
>
> |# camera.start_recording('doorbell.h264')|
>
> |# camera.wait_recording(20)|
>
> |MQTTClient.publish("DOORBELL", "on") # Publish message to MQTT broker|
>
> |# buzzer.start(10) # Set dutycycle to 10|
>
>
> |if __name__ == "__main__":|
>
> |a = 1|
>
> |buzzer = Buzzer()|
>
> |buzzer.play| <https://buzzer.play/>|(int(a))|
>
> |time.sleep(.5)|
>
> |# buzzer.stop()|
>
> |subprocess.call| <https://subprocess.call/>|(["motion", "-n"])|
>
> |GPIO.cleanup()|
>
>
>
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