Thanks Gene for pointing me to some stuff that goes into the right direction.
Regarding the sensors, I've tried to figure out what's the best solution for
reading some sort of sensors.
Best, and most flexible solution is interfacing the sensors using sensors with
I2C interface or connect
them to a microcontroller and feed data into PC using I2C.
I think, I2C will do for most sensors, because reading speed is not that high
and linux supports quiet a
good speed in reading I2C.
Another point is, if you own a graphic card with DVI connector, I2C is
accessible using some Pins on that
connector, no additional hardware is required. SPI in contrast will require
some more effort to get it
working that way.
So it's possible to integrate whatever sensor direct into linux device tree.
(No additional Parport pin
or other pin is needed)
Sensor Data are accessible simply by reading a file in user space.
Right now, I have a PandaBoard, a BeagleBone and a PC running all the same
flower of reading sensors.
The work now is, making the data available to linuxcnc in a configurable way.
Ju
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