Re: [Lcd-linux] Connecting HD44780 to AT91SAM9260

[Anselm B. <ab...@cs...>]

Hi,

I am working on a similar setup right know. Only difference is that I use a AT91RM9200 and the data pins of the LCD are connected to the data bus of the MCU, so the LCD is memory mapped.

I have already modified the read and write functions and getting "reactions" from the LCD. But right know I am a little bit confused about the device interface. I have only a hd44780 device in my /dev tree but the doc says there should be a lcd device. So do I have to write to the hd44780 device to get an output on the LCD or is there something wrong because of the missing lcd device?

Oh and I have compile the driver statically into the kernel. In case this is important.

I would appreciate some help about this issue and will of course post my results if they are working. I think they can be easily adapted to a completely GPIO attached LCD.

Regards, Anselm