Re: AW: [Lcd4linux-devel] USB based hd44780 units ...

[Michael R. <re...@eu...>]

Hi there,


> I have to look into the BWCT driver, to see what makes
> it special. But for the I2C interface we created additional support next
> to the parallel port implementation. My guess would be that for USB
> something similar would happen.

Okay, guys, consider me being convinced :-)

I agree there should be a 'drv_generic_usb' backend, which can be used
in the HD44780 driver, too. But there will be some issues with the
autoconf stuff again... (did I mention that I *love* autoconf?)

Another possibility would be to create a generic HD44780 backend, which
could be used by different drivers.... so there would be two (or three)
HD44780 drivers: one for parport, one for i2c, and some for USB.

What I really dislike is the complexity of the drv_HD44780.c file. And I
suppose complexity will increase again if we add another bus type...


One of the 'special' things with the BWCT driver is the strange display
detection. The reason is that there are different BWCT interfaces,
sometimes there's a different interface class or something.... I
remember a discussion with Bernd from BWCT about this...


bye, Michael

-- 
Michael Reinelt <re...@eu...>
http://home.pages.at/reinelt
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