Does anybody have a sample code for that? Also, a easy to understand documentation of all parallel-port ioctrl() functions would be helpful.
I don't think the parport has any usable ioctrl(). In most cases using an user space program to control non-printer devices from userspace isn't possible at all due to timing problems.
The only solution that I am aware of is direct port access. But this is no easy task; for example have a look at the graphlcd patch for VDR. There is a small test program (written in C) for some parport dot-matrix displays.
- Sebastian
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