Getting started with Raspberry Pi SPI display

Introduction 

Today We are going to learn how to interface LCD TFT display using SPI interface with Raspberry Pi and also how to change the orientation of the screen. The SPI display comes in different sizes and speeds. Here is the list of all different type of RPi display with SPI interface from waveshare.

Part Number	Resolution	Display Interface	Touch Panel Interface	For use with	Dimension (mm)	Touch Panel Type	Toughened Glass Cover	Display Tech.	Sound
2.8inch RPi LCD (A)	320×240	SPI	SPI	Pi	As the Pi 3B+	Resistive	×	TFT	×
3.2inch RPi LCD (C)	320×240	High-Speed SPI	SPI	Pi	As the Pi 3B+	Resistive	×	TFT	×
3.5inch RPi LCD (B)	480×320	SPI	SPI	Pi	As the Pi 3B+	Resistive	×	IPS	×
3.5inch RPi LCD (C)	480×320	High-Speed SPI	SPI	Pi	As the Pi 3B+	Resistive	×	TFT	×
4inch RPi LCD (C)	480×320	High-Speed SPI	SPI	Pi	96 × 61	Resistive	×	IPS	×

source: https://www.waveshare.com

Pre Driver Installation 

• Make an SD card with Rasbian OS or any other OS of your wish.
• Insert the SD card to your Raspberry Pi.
• Connect an HDMI monitor, USB keyboard and mouse.
• Connect your Display with Raspberry Pi.
• Connect a 2.5 amps 5v adapter and boot up the Pi.

Driver Installation 

• Open the terminal window.
• Type git clone https://www.github.com/LCD-show.git   to download the driver files.
• Type cd LCD-show  to go inside the downloaded folder 
• As I am using 3.2-inch display without high-speed SPI and with Rasbian OS I am using this comment to install the driver sudo ./LCD32-show. below is a table of different installation comments for different LCDs and OS.
• Now your Pi will automatically get rebooted and your desktop will be displayed in the LCD screen instead of your HDMI monitor.

For 2.8inch RPi LCD (A)

• sudo ./LCD28-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD28-show lite

For 3.2inch RPi LCD (B)

• sudo ./LCD32-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD32-show lite

For 3.5inch RPi LCD (A)

• sudo ./LCD35-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD35-show lite

For 3.5inch RPi LCD (B) old version

• sudo ./LCD35B-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD35B-show lite

For 3.5inch RPi LCD (B) V2 version

• sudo ./LCD35B-show-V2
• or (for Raspbian-Stretch-Lite) sudo ./LCD35B-show-V2 lite

For 3.5inch RPi LCD (C)

• sudo ./LCD35C-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD35C-show lite

For 4inch RPi LCD (A)

• sudo ./LCD4-show
• or (for Raspbian-Stretch-Lite) sudo ./LCD4-show lite

Video Instructions 

Changing Orientation 

There are a total of 4 screen orientation possible,

• 0 degree
• 90 degree
• 180 degree
• 270 degree

Follow these steps to set the orientation,

• Open a terminal window, either you can directly open from your raspberry pi or you can use ssh.
• type cd lcd-show to enter inside the downloaded driver folder, which we have done in the previous step.
• Now type the below-provided code for whichever the orientation you need,

For 2.8inch RPi LCD (A)

• sudo ./LCD28-show X
• X should be 0, 90, 180 or 270

For 3.2inch RPi LCD (B)

• sudo ./LCD32-show X
• X should be 0, 90, 180 or 270

For 3.5inch RPi LCD (A)

• sudo ./LCD35-show X
• X should be 0, 90, 180 or 270

For 3.5inch RPi LCD (B)

• sudo ./LCD35-show X
• X should be 0, 90, 180 or 270

For 35inch RPi LCD (B) V2

• sudo ./LCD32B-show-V2 X
• X should be 0, 90, 180 or 270

For 3.5inch RPi LCD (C)

• sudo ./LCD35-show X
• X should be 0, 90, 180 or 270

For 4inch RPi LCD (A)

• sudo ./LCD4-show X
• X should be 0, 90, 180 or 270

Video Instructions