Raspberry Pi: terminate raspistill command from python
I'm trying to use a PHP file on a server to transmit some variables into a Python script which will in turn start a raspistill timelapse on my Raspberry Pi.
I've so far managed to start taking pictures but I'd now like to have a button to kill the timelapse - i've tried many methods including .kill() and .terminate() but cant get it working.
Here is my current python code:
import sys, os, time, datetime
import subprocess
import signal
from time import sleep
tlfreq = int(sys.argv[1])
tltime = int(sys.argv[2])
dir = '/var/www/timelapse/' + sys.argv[3]
if not os.path.exists(dir):
os.makedirs(dir)
cmd = ('raspistill -t ' + str(tltime) + " -tl " + str(tlfreq) + " -o " + dir + "/photo_%04d.jpg")
pro = subprocess.Popen(cmd, stdout=subprocess.PIPE,
shell=True, preexec_fn=os.setsid)
print "Pictures are now being taken every" , tlfreq/1000 , "second/s for a total of", tltime/3600000 , "hours. These are being stored in", dir
Perhaps I need an "if variable = 1 then kill" command and then send the variable to python.
Any help would be greatly appreciated!
Many thanks, Dan
You can create new python script kill_raspystill.py with this code
import os
os.system("pkill raspistill")
and call that script when you press a button.
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