Serial port output - Syntax example

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Serial port output - Syntax example

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SMSchulz	SMSchulz posted 7 Years Ago Topic Details Share Topic
Group: Forum Members Posts: 1, Visits: 1	Hi, we need to send a simple "on" signal through COM3 (actual hardware is: USB-to-COM-Adapter connected to USB port as a COM device) for lets say 10msec, then go back to zero. We'd like to associate this as a marker signal with e.g. presenation of a word or a picture, and send it to our physiology recording device which is designed to read a COM-port and translates this into a number in a marker channel we record concurrently to he actual physiology signals. I struggle a bit with setting up the syntax... <port portname> / erase = true("bits") or true(integer) or false / items = itemname or ("binary", "binary", "binary",... ) or (integer, integer, integer,... ) / onprepare = [expression; expression; expression; ...] / port = port name / resetinterval = integer / select = integer or selectionmode or selectionmode(pool) or dependency(stimulusname) or dependency(listname) or listname / subport = porttype </port> Could someone point me to a reference on what all the options actually do? Even better: coudl someone provide an example for a serial port? The parallel port is reported in the Inquisit documentation - but it seems that it is the simpler example... Any help is greatly appreciated! Kind regards, Stefan Tags markers serial port trigger
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Dave	Dave posted 7 Years Ago ANSWER Post Details Share Post
Group: Administrators Posts: 12K, Visits: 98K	+x SMSchulz - Wednesday, March 29, 2017 Hi, we need to send a simple "on" signal through COM3 (actual hardware is: USB-to-COM-Adapter connected to USB port as a COM device) for lets say 10msec, then go back to zero. We'd like to associate this as a marker signal with e.g. presenation of a word or a picture, and send it to our physiology recording device which is designed to read a COM-port and translates this into a number in a marker channel we record concurrently to he actual physiology signals. I struggle a bit with setting up the syntax... <port portname> / erase = true("bits") or true(integer) or false / items = itemname or ("binary", "binary", "binary",... ) or (integer, integer, integer,... ) / onprepare = [expression; expression; expression; ...] / port = port name / resetinterval = integer / select = integer or selectionmode or selectionmode(pool) or dependency(stimulusname) or dependency(listname) or listname / subport = porttype </port> Could someone point me to a reference on what all the options actually do? Even better: coudl someone provide an example for a serial port? The parallel port is reported in the Inquisit documentation - but it seems that it is the simpler example... Any help is greatly appreciated! Kind regards, Stefan A <port> element works like any other stimulus. What you do is something like: // sends 1 <port on> / items = ("00000001") / port = COM3 </port> // back to 0 <port backtolow> / items = ("00000000") / port = COM3 </port> <text word> / items = ("A", "B", C") ... </text> with <trial example> / stimulustimes = [0=word, on; 20=backtolow] ... </trial> You can also directly specify the integer value to wish to send instead of specifying the value in 8-bit binary: // sends 1 <port on> / items = (1) / port = COM3 </port> Edited 7 Years Ago by Dave
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