check sequence pier listening


i have an arduino eventuality receiving instructions python book around sequence port.



the arduino takes symbol state pushed, send summary around sequence pier python book wait response. (via serial.available()). works good enough.



however, python book crashed whatever reason (ideally run background, can't simply checked), arduino wait evermore taken even book restart.



is there proceed arduino check there something listening sequence port? (and warning me flashing lights, etc. not) sequence works? misfortune box i speculation i timeout, nonetheless ideal.



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