Re: Serial Ports and Perl

[Andy Smith <andy@strugglers.net>]

Hi Martin,

On Thu, Oct 26, 2017 at 07:37:07PM -0500, Martin McCormick wrote:
> 	If anybody has gotten the perl Device::SerialPort to
> work, I am interested to know what I am doing or not doing.

I have been using it successfully for a long time, but all I do is
read whole lines from the serial device like:

my $dev  = '/dev/ttyUSB0';
my $port = Device::SerialPort->new($dev);

$port->baudrate(57600);
$port->write_settings;

open my $fh, '<', $dev or die "Can't open $dev: $!";

while (<$fh>) {
    print "READ: $_\n";
}

So, I am only using Device::SerialPort to configure the device,
while all reading is done by treating it as a normal file.

I see you are using lookfor(), which I have never used before. From
a brief look at:

    http://search.cpan.org/~cook/Device-SerialPort-1.002/SerialPort.pm#Methods_for_I/O_Processing

it seems you should be setting are_match() if you want lookfor() to
match anything.

Cheers,
Andy

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