Re: picoLCD improved key input

Hello Martin,

attached you find my version of your patch. Please patch against cvs HEAD.

The main differences between your first version and this one:

- Library (de)initialization is session based. This allows us to
restrict libusb-1.0 to this driver without affecting other (future)
drivers and LCDd core.

- Key repeat is calculated based on actual time values instead of
countdown loops. This makes the code independent from the processing
intervals.

- Repeat values are restricted to 0-3000ms (arbitrarily chosen) with 0
disabling it.

- picolcd_close frees more memory previously allocated.


The libusb-1.0 implementation compiles surprisingly well on FreeBSD if I
only were able to find out about how to make configure work. This system
comes with an USB library compatible with libusb-0.1 _and_ libusb-1.0,
but lacks any way of detecting it with pkg-config. I spent the whole
afternoon fiddling with it and ended up hard-coding the values for my
system within configure.in (this is missing from the attached patch).

Please give it a try. I coded blindly - it compiles but I have no idea
how it behaves with a real display.

Regards,
Markus

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