Note: I did not write this driver. I only modified it to clean up compiler warnings/errors. The original can be found here: (http://www.librecalc.com/en/wp-content/uploads/sites/4/2014/10/sharp.c)
More information can be found here: (http://www.librecalc.com/en/downloads/)
This driver is for the LS027B7DH01. It should work with other Sharp Mem LCD displays by modifying all 400/240 references with the correct dimensions for your screen.
Connect the following pins:
| Display | RasPi |
|---|---|
| VIN | 3.3V |
| 3V3 | N/C |
| GND | GND |
| SCLK | 11 (SCLK) |
| MOSI | 10 (MOSI) |
| CS | 23 |
| EXTMD | 3.3V |
| DISP | 24 |
| EXTIN | 25 |
Verify that you have the linux kernel headers for your platform. For the RasPi these can be obtained by:
sudo apt-get install raspberrypi-kernel-headers
or more generally:
sudo apt-get install linux-headers-$(uname -r)
To compile the driver, run:
make
To install the driver, run:
sudo make modules_install
If you want the module to load at boot you'll need to add it to the /etc/modules file, like:
...
# This file contains...
# at boot time...
sharp
The included sharp.dts file is for the Raspberry Pi Zero W. To compile it, run:
dtc -@ -I dts -O dtb -o sharp.dtbo sharp.dts
To load it at runtime, copy it to /boot/overlays:
sudo cp sharp.dtbo /boot/overlays
And then add the following line to /boot/config.txt:
dtoverlay=sharp
If you want the boot console to show up on the display, you'll need to append fbcon=map:10 to /boot/cmdline.txt after rootwait, like:
... rootwait ... fbcon=map:10
To make sure the console fits on screen, uncomment the following lines in /boot/config.txt and set the resolution appropriately:
framebuffer_width=400
framebuffer_height=240