StarFive VisionFive SPI Bedienungsanleitung

Using VisionFive SPI to

Support LCD Display

with Python

Application Note

Version: 1.1

Date: 2022/07/29

Doc ID: VisionFive-ANEN-013-1.1

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Legal Statements

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Ltd. (hereinafter "StarFive") reserves the right to make changes without further notice to any

products herein.

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Preface

About this guide and technical support information.

About this document

This application note provides steps to use VisionFive's SPI to make a 2.4inch LCD display

with specified pictures.

Revision History

Table 0-1 Revision History

Version Released Revision

V1.1 2022/07/29 Added "cd" in the codeblock

cd /usr/local/lib64/python3.9/site-packages

to make it a complete command.

Notes and notices

The following notes and notices might appear in this guide:

•Tip:

Suggests how to apply the information in a topic or step.

•Note:

Explains a special case or expands on an important point.

•Important:

Points out critical information concerning a topic or step.

•CAUTION:

Indicates that an action or step can cause loss of data, security problems, or

performance issues.

•Warning:

Indicates that an action or step can result in physical harm or cause damage

to hardware.

iii

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Contents

List of Tables...........................................................................................................................5

List of Figures.........................................................................................................................6

Legal Statements.................................................................................................................... ii

Preface....................................................................................................................................iii

1. Introduction....................................................................................................................... 7

1.1. 40-Pin Header Definition..........................................................................................7

2. Preparation........................................................................................................................ 8

2.1. Preparing Hardware................................................................................................. 8

2.1.1. Hardware Setup............................................................................................. 8

2.2. Preparing Software.................................................................................................10

3. Running Demo Code......................................................................................................12

4. Demo Source Code........................................................................................................ 15

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List of Tables

Table 0-1 Revision History..................................................................................................... iii

Table 2-1 Hardware Preparation............................................................................................ 8

Table 2-2 Connect the 2.4inch LCD to the 40-Pin Header.................................................... 9

www.starfivetech.com

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List of Figures

Figure 1-1 40-Pin Definition....................................................................................................7

Figure 2-1 Connect the 2.4inch LCD to the 40-Pin Header................................................. 10

Figure 3-1 Example Output.................................................................................................. 13

Figure 3-2 Example Output.................................................................................................. 13

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1. Introduction

This application note provides steps to use VisionFive's SPI to make a 2.4inch LCD display

with specified pictures.

1.1. 40-Pin Header Definition

The following figure shows the location of the 40-pin header. The VisionFive board is taken

as an example:

Figure 1-1 40-Pin Definition

www.starfivetech.com

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2. Preparation

Before executing the demo program, make sure you prepare the following:

2.1. Preparing Hardware

Prepare the following hardware items before running the demo code:

Table 2-1 Hardware Preparation

Type M/O*Item Notes

Gener

M StarFive single board computer The following boards are applica

ble:

•StarLight

•VisionFive

Gener

M•16 GB (or more) micro-SD

card

•micro-SD card reader

•Computer (Windows/MAC/

Linux)

•USB to serial converter (3.3

V I/O)

•Ethernet cable

•Power adapter (5 V / 3 A)

•USB Type-C Cable

These items are used for flashing

Fedora OS into a micro-SD card.

SPI

LCD

•2.4inch LCD Module

•Dupont Line

Note:

*: M: Mandatory, O: Optional

2.1.1. Hardware Setup

The following table and figure describe how to connect LCD to the 40-pin header:

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| 2 - Preparation

Table 2-2 Connect the 2.4inch LCD to the 40-Pin Header

40-Pin GPIO Header

2.4inch LCD Module

Pin Number Pin Name

VCC 17 3.3V Power

GND 39 GND

DIN 19 GPIO18 (SPI MOSI)

CLK 23 GPIO12 (SPI SCLK)

CS 24 GPIO15 (SPI CE0)

DC 40 GPIO0

RST 11 GPIO44

BL 18 GPIO19

www.starfivetech.com

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| 2 - Preparation

Figure 2-1 Connect the 2.4inch LCD to the 40-Pin Header

5VPower

GND

GPIO14(UARTTX)

GPIO13(UARTRX)

GPIO45

GPIO19

GND

GPIO15(SPICE0)

GPIO10

GPIO7(PWM0)

GPIO4

GND

GPIO21

GPIO17

GPIO11(SPICE1)

GND

GPIO2

GPIO0

3.3VPower

GPIO48(I2CSDA)

GPIO47(I2CSCL)

GPIO46

GND

GPIO44

3.3VPower

GPIO18(SPIMOSI)

GPIO12(SPISCLK)

GPIO9

GPIO6

GPIO3

GPIO22

GPIO20

GPIO16(SPIMISO)

GND

GPIO8

GPIO5(PWM1)

GPIO1

GND

VCC

GND

CLK

RST

2.4inchLCDModule

DIN

2.2. Preparing Software

Make sure the following procedures are performed:

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