"... writes various patterns to the data lines without every pulsing the -strobe line. Without a pulse on -strobe, any printer also attached to the port should ignore this data..."
I am checking busy pin while sending data to the parellel port in my printer driver.When the printer is switched on for the first time busy pin is high continously. But if I give power cycle to the printer the busy pin released and data is sent. How to come out of this problem. I am using centronix interface.
Thanks in advance.
James Newton replies: Almost anything could cause the problem. A defective printer. A bad or intermittant cable. A damaged parallel port on the PC. Basic troubleshooting is the only way to tell. If you have another printer, swap it in place of this one and see if the problem goes away or remains. Try a new cable. Take the cable and printer to another PC and try them there.+
I am looking for a simple c code example for basic input and output functions. I have switches for the inputs and driving leds on the output. Thanks for any help!
I am trying to find some software and an interface to grab the parallel printer output from a piece of lab equipment and dump it intoi a file which can then be interpreted in real-time. Does any such software exist?
|file: /Techref/io/parallel/port.htm, 11KB, , updated: 2016/12/20 13:59, local time: 2017/7/25 23:47,
|©2017 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?|
<A HREF="http://www.piclist.com/techref/io/parallel/port.htm"> IEEE-1284 / Centronics / Parallel Port</A>
|Did you find what you needed?|
PICList 2017 contributors:
o List host: MIT, Site host massmind.org, Top posters @20170725 RussellMc, Van Horn, David, IVP, James Cameron, alan.b.pearce, Sean Breheny, Neil, Bob Blick, David C Brown, Denny Esterline,
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
Welcome to www.piclist.com!