Support for HD44780 based LCD displays

[piotrserafin]

Hello,

I'm working on HD44780 based LCD support in User-space drivers layer. I wish to share after completion.

[robertoestivill]

@piotrserafin that would be cool. I got my hands in one of those and I'm looking for a driver or material to start digging into. Any tips?

[piotrserafin]

Hi,

I'm using datasheet for controller which can be found here:
https://www.sparkfun.com/datasheets/LCD/HD44780.pdf

There is a lot of sources linked to the wikipedia page:
https://en.wikipedia.org/wiki/Hitachi_HD44780_LCD_controller

[memjr]

Should be very easy to write this driver. You can probably use the Pi4J code to do most of it.

https://github.com/Pi4J/pi4j

[piotrserafin]

Sure it is easy but the whole idea is to use android things sdk for that instead of ext. lib.

[memjr]

Oh I did not mean to use it as it is, but to use it as a reference to port it.

[leinardi]

If someone is interested in a I2C driver for the HD44780, I just published one in jcentral.
Info and sources available here: https://github.com/leinardi/androidthings-drivers/tree/master/driver-pcf8574-hd44780