Messages in this thread | | | From | Bodo Eggert <> | Subject | Re: parport_pc disables parallel port on unload. | Date | Wed, 24 Sep 2008 14:47:46 +0200 |
| |
Bill Unruh <unruh@physics.ubc.ca> wrote:
> I have a parallel port module gps.c which I have written ( after the short > module described in Linux Device Drivers), whose purpose is to timestamp > the occurance of interrupts on the parallel port Ack line to as high a > temporal accuracy as possible.These are generated by the PPS line of a Gamin > 18LVC gps receiver. Since I want the highest accuracy possible I do not want > the latency of going through the stock drivers and waiting for a poll or > select to let me know an interrupt has occured.
> So, could anyone point me to some relatively comprehensible documentation ( > or "canned program") to show me how to switch the parallel port back on if > unloading parport_pc has switched it off.
You can copy/paste the relevant parts from the parport_pc driver.
| |