Missing data on serial read

ccherri has asked for the wisdom of the Perl Monks concerning the following question:

I am trying to read streaming serial data at 115200b and cant seem to pick it all up.

using the input method ($data = $Port -> input), I get the first 14 or 15 characters of every line. I need the whole line.

using the read method ($data= $Port -> read(4096)) and by adjusting the read_interval I can either get partials of every line using $Port->read_interval(1);

or fully every third line using $Port->read_interval(2); I need all of every line.

Tx for any insight! Chris

Comment on Missing data on serial read

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Re: Missing data on serial read by BrowserUk (Patriarch) on Jun 15, 2013 at 00:30 UTC
I get the first 14 or 15 characters of every line. You are overrunning the buffer in your UART. You need to enable some form of handshaking. rts/cts, XON/XOFF or DTR/DSR. Check the specs for the device to find out which it supports. With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday' Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error. "Science is about questioning the status quo. Questioning authority". In the absence of evidence, opinion is indistinguishable from prejudice.	[reply]
Re^2: Missing data on serial read by ccherri (Acolyte) on Jun 17, 2013 at 21:54 UTC
I tried and verified all the available handshaking options, but none had any affect. Nor do they when I tested them using realterm either. Thanks for the suggestion tho, at least that is eliminated. Chris	[reply]


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