LCD Driver

This is eventually gonna be a kernel module capable of sending text to a connected LCD display. The communication would be happening via device file /dev/lcd

Installing the module creates the device /dev/lcd used for sending text to the screen. The LCD display is turned on by opening the file for writing. A string of characters has to be ended with \n in order to appear on the display.

This is the circuit I used to drive my screen:

This is also the default pin layout used by the driver. If you want to use a different pin layout, you can change the driver's config as such:

sudo ./install.sh pin_name=pin_number ...

where pin_name is one of the following:

• pin_power
• pin_rs
• pin_rw
• pin_enable
• pin_data

and pin_number is the GPIO pin number. For pin_data you need to supply a comma-separated list of four numbers.

How to build

Good luck.

How to use

Probably better to just not use it.