I have created .py file that is doing job of communicating on UART quite well. Now I want to run that file on button clicking from browser. I have tried exec("python filename.py"); in PHP but that didn't worked. I have also tried system().
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Can you give more details ? Is this python script like a daemon or it simply exits after doing some tasks? Which web server are you running on PI ?RikiRiocma– RikiRiocma2017年05月10日 19:16:26 +00:00Commented May 10, 2017 at 19:16
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Perhaps this is something that you could do using Remi? Certainly if you're just wanting a single-use website with a button that is used to run your script that's one of the easiest ways (it's all done with Python too).Tom– Tom2017年10月25日 02:15:56 +00:00Commented Oct 25, 2017 at 2:15
3 Answers 3
Here an example how to did it with cherrypy3 on a raspbian jessie.
- Install cherrypy3 with
sudo apt install python-cherrypy3. Create a file
button.pywith the following content:#!/usr/bin/python # coding: utf-8 import cherrypy import subprocess text = """ <html><body> <form method='get' action='do_it'> <input type='submit' value='Submit' /> </form></body> {} </html> """ class PiButton(object): @cherrypy.expose def index(self): return text.format("") @cherrypy.expose def do_it(self, *vargs, **kwargs): #command = "ls /" command = "python my_other_python.script.py" result = subprocess.Popen(command, shell=True, stdout=subprocess.PIPE).stdout.read().decode('utf-8').replace('\n', '<br>') result2 = "command: {!r}<br>result:<br>{}".format(command, result) return text.format(result2) if __name__ == "__main__": cherrypy.engine.autoreload.unsubscribe() cherrypy.config.update({'server.socket_host': "0.0.0.0", 'server.socket_port': 8181}) cherrypy.quickstart(PiButton(), '/', {'':{}})- Run it with
python button.py - Now open a browser and enter the adress:
http://<ip-of-raspberrypi>:8181replace<ip-of-raspberrypi>with the actual IP of your raspberrypi.
I'd suggest making the button redirect the URL to making it have a location.href?CommandVariable=
Then, using PHP
if (isset($_GET['CommandVariable']))
{
exec( "python filename.py" );
}
This is basically saying: When I push the button, I will place a command variable in the URL. And the PHP will say: Is the Command Variable there? It is? Ok now I can execute this line of code.
You'll want to write an sh script that looks like
python path/to/the/pyton/filename.py
And run that.
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But he want to have it run from a button on a web page...RikiRiocma– RikiRiocma2017年05月10日 19:11:52 +00:00Commented May 10, 2017 at 19:11
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stackoverflow.com/questions/28655095/…CharlieHorse– CharlieHorse2017年05月10日 22:11:51 +00:00Commented May 10, 2017 at 22:11