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r/w attached infrared head on /dev/ttyUSB0by stoerti (Novice) |
on May 25, 2019 at 15:43 UTC ( [id://11100518]=perlquestion: print w/replies, xml ) | Need Help?? |
stoerti has asked for the wisdom of the Perl Monks concerning the following question:
Hi there.
I tried thousand ways the last weeks and I am desparing. I need to write and read to /dev/ttyUSB0 where a infrared head is attached to read an electric meter. The settings are 300 baud 7E1, no handshake If I do this from shell in that way: I get an answer as expected:
Now I try to realize in perl to catch this output but all ways I have gone, nothing comes back to perl. Only using Device::SerialPort I receive the first line "/LOG4LK13BD202015" but not more. One of many examples: gives me: Finish! I tried system calls in different way, different ways to open an file handle on the device, some perl modules - nothing worked for me. Has anyone an idea or realized something like that in the past and can give me some help? 2019-05-28 Athanasius added code tags
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