Cant get Flask app and another function to run together using Flask Script

I've got a raspberry pi and I've managed to get to separate elements working independently. On to sense motion and take a picture, another to stream the cameras feed over my local network using Flask.

However i want these to run simultaneously, I've been looking at the Flask Script module and the Manger functionality. I believe i have it setup correctly. However when I run the 'runserver' command nothing actually happens.

Is what I want to do even possible with Flask Script? If it is is my approach correct, or what would be a better solution.

Thanks

Here's is my python script so far:

from importlib import import_module

import os

from flask_script import Server, Manager

from flask import Flask, render_template, Response

from camera import Camera

from gpiozero import MotionSensor

import time



# Code to take a snapshot when motion is detected

def senseMotion():

    pir = MotionSensor(4)



    while True:

        if pir.motion_detected:

            print('Motion detected')

            Camera.snapshot()

            time.sleep(60)



app = Flask(__name__)

manager = Manager(app)





# Flask app to view video stream in browser

@app.route('/')

def index():

    """Video streaming home page."""

    return render_template('index.html')





def gen(camera):

    """Video streaming generator function."""

    while True:

        frame = camera.get_frame()

        yield (b'--framern'

           b'Content-Type: image/jpegrnrn' + frame + b'rn')





@app.route('/video_feed')

def video_feed():

    """Video streaming route. Put this in the src attribute of an img tag."""

    return Response(gen(Camera()),

                mimetype='multipart/x-mixed-replace; boundary=frame')



@manager.command

def runserver():

    senseMotion()

    app.run(host='0.0.0.0', threaded=True)





if __name__ == "__main__":

    manager.run()



#if __name__ == '__main__':

    #app.run(host='0.0.0.0', threaded=True)

asked Nov 17 at 13:27

Pedroson

596

1

So you launch server, but if I understand it correctly you are going to senseMotion() where it is stuck forever and never reaches app.run(). You need asynchronous parallel executions. Try to use some task manager like Celery - stackoverflow.com/questions/14588253/… or Threads - stackoverflow.com/questions/36617859/…
– omdv
Nov 17 at 13:41

Thanks for your reply, I'll have a look at your suggestions.
– Pedroson
Nov 17 at 17:54

add a comment |

Is what I want to do even possible with Flask Script? If it is is my approach correct, or what would be a better solution.

Thanks

Here's is my python script so far:

from importlib import import_module

import os

from flask_script import Server, Manager

from flask import Flask, render_template, Response

from camera import Camera

from gpiozero import MotionSensor

import time



# Code to take a snapshot when motion is detected

def senseMotion():

    pir = MotionSensor(4)



    while True:

        if pir.motion_detected:

            print('Motion detected')

            Camera.snapshot()

            time.sleep(60)



app = Flask(__name__)

manager = Manager(app)





# Flask app to view video stream in browser

@app.route('/')

def index():

    """Video streaming home page."""

    return render_template('index.html')





def gen(camera):

    """Video streaming generator function."""

    while True:

        frame = camera.get_frame()

        yield (b'--framern'

           b'Content-Type: image/jpegrnrn' + frame + b'rn')





@app.route('/video_feed')

def video_feed():

    """Video streaming route. Put this in the src attribute of an img tag."""

    return Response(gen(Camera()),

                mimetype='multipart/x-mixed-replace; boundary=frame')



@manager.command

def runserver():

    senseMotion()

    app.run(host='0.0.0.0', threaded=True)





if __name__ == "__main__":

    manager.run()



#if __name__ == '__main__':

    #app.run(host='0.0.0.0', threaded=True)

asked Nov 17 at 13:27

Pedroson

596

1

So you launch server, but if I understand it correctly you are going to senseMotion() where it is stuck forever and never reaches app.run(). You need asynchronous parallel executions. Try to use some task manager like Celery - stackoverflow.com/questions/14588253/… or Threads - stackoverflow.com/questions/36617859/…
– omdv
Nov 17 at 13:41

Thanks for your reply, I'll have a look at your suggestions.
– Pedroson
Nov 17 at 17:54

add a comment |

Is what I want to do even possible with Flask Script? If it is is my approach correct, or what would be a better solution.

Thanks

Here's is my python script so far:

from importlib import import_module

import os

from flask_script import Server, Manager

from flask import Flask, render_template, Response

from camera import Camera

from gpiozero import MotionSensor

import time



# Code to take a snapshot when motion is detected

def senseMotion():

    pir = MotionSensor(4)



    while True:

        if pir.motion_detected:

            print('Motion detected')

            Camera.snapshot()

            time.sleep(60)



app = Flask(__name__)

manager = Manager(app)





# Flask app to view video stream in browser

@app.route('/')

def index():

    """Video streaming home page."""

    return render_template('index.html')





def gen(camera):

    """Video streaming generator function."""

    while True:

        frame = camera.get_frame()

        yield (b'--framern'

           b'Content-Type: image/jpegrnrn' + frame + b'rn')





@app.route('/video_feed')

def video_feed():

    """Video streaming route. Put this in the src attribute of an img tag."""

    return Response(gen(Camera()),

                mimetype='multipart/x-mixed-replace; boundary=frame')



@manager.command

def runserver():

    senseMotion()

    app.run(host='0.0.0.0', threaded=True)





if __name__ == "__main__":

    manager.run()



#if __name__ == '__main__':

    #app.run(host='0.0.0.0', threaded=True)

asked Nov 17 at 13:27

Pedroson

596

Is what I want to do even possible with Flask Script? If it is is my approach correct, or what would be a better solution.

Thanks

Here's is my python script so far:

from importlib import import_module

import os

from flask_script import Server, Manager

from flask import Flask, render_template, Response

from camera import Camera

from gpiozero import MotionSensor

import time



# Code to take a snapshot when motion is detected

def senseMotion():

    pir = MotionSensor(4)



    while True:

        if pir.motion_detected:

            print('Motion detected')

            Camera.snapshot()

            time.sleep(60)



app = Flask(__name__)

manager = Manager(app)





# Flask app to view video stream in browser

@app.route('/')

def index():

    """Video streaming home page."""

    return render_template('index.html')





def gen(camera):

    """Video streaming generator function."""

    while True:

        frame = camera.get_frame()

        yield (b'--framern'

           b'Content-Type: image/jpegrnrn' + frame + b'rn')





@app.route('/video_feed')

def video_feed():

    """Video streaming route. Put this in the src attribute of an img tag."""

    return Response(gen(Camera()),

                mimetype='multipart/x-mixed-replace; boundary=frame')



@manager.command

def runserver():

    senseMotion()

    app.run(host='0.0.0.0', threaded=True)





if __name__ == "__main__":

    manager.run()



#if __name__ == '__main__':

    #app.run(host='0.0.0.0', threaded=True)

python python-3.x flask raspberry-pi3 flask-script

asked Nov 17 at 13:27

Pedroson

596

asked Nov 17 at 13:27

Pedroson

596

asked Nov 17 at 13:27

Pedroson

596

asked Nov 17 at 13:27

Pedroson

596

asked Nov 17 at 13:27

Pedroson

596

1

So you launch server, but if I understand it correctly you are going to senseMotion() where it is stuck forever and never reaches app.run(). You need asynchronous parallel executions. Try to use some task manager like Celery - stackoverflow.com/questions/14588253/… or Threads - stackoverflow.com/questions/36617859/…
– omdv
Nov 17 at 13:41

Thanks for your reply, I'll have a look at your suggestions.
– Pedroson
Nov 17 at 17:54

add a comment |

1

So you launch server, but if I understand it correctly you are going to senseMotion() where it is stuck forever and never reaches app.run(). You need asynchronous parallel executions. Try to use some task manager like Celery - stackoverflow.com/questions/14588253/… or Threads - stackoverflow.com/questions/36617859/…
– omdv
Nov 17 at 13:41

Thanks for your reply, I'll have a look at your suggestions.
– Pedroson
Nov 17 at 17:54

So you launch server, but if I understand it correctly you are going to senseMotion() where it is stuck forever and never reaches app.run(). You need asynchronous parallel executions. Try to use some task manager like Celery - stackoverflow.com/questions/14588253/… or Threads - stackoverflow.com/questions/36617859/…
– omdv
Nov 17 at 13:41

Thanks for your reply, I'll have a look at your suggestions.
– Pedroson
Nov 17 at 17:54

add a comment |

1 Answer
1

active

oldest

votes

gpiozero.MotionSensor has event when_motion which runs code in different thread.

so use pir = MotionSensor(4)

and

pir.when_motion = MakeSnapshot

Of course you need to define function MakeSnapshot()

Read more about this class: https://gpiozero.readthedocs.io/en/stable/api_input.html#motion-sensor-d-sun-pir

answered Nov 20 at 5:52

Koxo

694

add a comment |

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1 Answer
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active

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1 Answer
1

active

oldest

votes

gpiozero.MotionSensor has event when_motion which runs code in different thread.

so use pir = MotionSensor(4)

and

pir.when_motion = MakeSnapshot

Of course you need to define function MakeSnapshot()

Read more about this class: https://gpiozero.readthedocs.io/en/stable/api_input.html#motion-sensor-d-sun-pir

answered Nov 20 at 5:52

Koxo

694

add a comment |

gpiozero.MotionSensor has event when_motion which runs code in different thread.

so use pir = MotionSensor(4)

and

pir.when_motion = MakeSnapshot

Of course you need to define function MakeSnapshot()

Read more about this class: https://gpiozero.readthedocs.io/en/stable/api_input.html#motion-sensor-d-sun-pir

answered Nov 20 at 5:52

Koxo

694

add a comment |

gpiozero.MotionSensor has event when_motion which runs code in different thread.

so use pir = MotionSensor(4)

and

pir.when_motion = MakeSnapshot

Of course you need to define function MakeSnapshot()

Read more about this class: https://gpiozero.readthedocs.io/en/stable/api_input.html#motion-sensor-d-sun-pir

answered Nov 20 at 5:52

Koxo

694

gpiozero.MotionSensor has event when_motion which runs code in different thread.

so use pir = MotionSensor(4)

and

pir.when_motion = MakeSnapshot

Of course you need to define function MakeSnapshot()

Read more about this class: https://gpiozero.readthedocs.io/en/stable/api_input.html#motion-sensor-d-sun-pir

answered Nov 20 at 5:52

Koxo

694

answered Nov 20 at 5:52

Koxo

694

answered Nov 20 at 5:52

Koxo

694

answered Nov 20 at 5:52

Koxo

694

add a comment |

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