Author: ds
Status: works in immediate mode
Devices: [standard] parallel port (comedi_parport)
+Updated: Tue, 30 Apr 2002 21:11:45 -0700
A cheap and easy way to get a few more digital I/O lines. Steal
additional parallel ports from old computers or your neighbors'
Notes:
-Channel 0 and 2 are output, channel 1 is input. I know that it
-is possible to change this with ECP/EPP parallel ports, but this
-driver is a cheap hack.
+Subdevices 0 and 2 are digital output, subdevice 1 is digital
+input. I know that it is possible to change this with ECP/EPP
+parallel ports, but this driver is a cheap hack.
-Pins 13 and 14 are inverted once by comedi and once by the
+Pins 13 and 14 are inverted once by Comedi and once by the
hardware, thus cancelling the effect.
Pin 1 is a strobe, thus acts like one. There's no way in software