On Friday, 12 February 2021 10:45:46 GMT Keith Edmunds wrote:
> Let us know how you get on.
Well pdb was certainly a help, in that I could single step to the point where
the MP3 object (mp3_player) was terminated. At that point pdb was abandoned
by the software and the Music Player simply started again.
This baffled me for an hour or two, but then I realised that my problem was
that
nearly everything I do in this software is interrupt driven. So when I press
the 'Stop Music' Button, this sends a message from the Flask App to the Music
Player software. This message is retrieved on a regular basis by an interrupt
raised by apscheduler and the MP3 object is terminated in the function
mp3_player_stop(). This means of course that once the interrupt is serviced,
execution is returned to the mp3_player_start() program which is in a while()
loop and testing to see if the player has terminated, using:
mp3_wait = mp3_player.wait()
if not mp3_wait:
print ('MP3 Player: mpg123 failed:%#x\n' % mp3_wait)
at the end of the loop. At this point execution goes back to the start of the
while().
I put a break after the last line above and the program stopped. :-)
However, this only works once at the moment, so I've obviously got a variable
somewhere that needs cleaning out, but at least I have some tools to help me
do it.
Thanks Keith for the suggestion.
--
Terry Coles
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