Based on my testing, the issue is that you need to do $port->write_settings or die "write_settings: $^E"; after setting the parameters.

The next issue I had was that Win32::SerialPort's ->read appears to be behaving non-blocking (I unfortunately don't have enough time to investigate further at the moment see reply). See its documentation for a few blocking methods you can try, or you can use the tied filehandle interface to be able to use Perl's readline and read - if I wanted blocking I/O, the latter is what I would do as I find the filehandle interface more familiar.

Note you should Use strict and warnings!

In reply to Re: SerialPort issues under Windows 10 by haukex
in thread SerialPort issues under Windows 10 by clinicalAD

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