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Showing content with the highest reputation on 10/17/2021 in all areas

  1. Your script is probably getting stuck here: $dataOut = fgets($f); It's waiting for data from your serial device but the device isn't sending any data so the script just hangs there waiting indefinitely. You'll have to add some debug logging or something to figure out why or if that's actually the case. You could also try implementing non-blocking IO and a timeout.
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