MSP2833/MSP2834 UNO/Mega2560 Demo Instructions

1. Introduction to Testing Platform

Development board: Arduino UNO/MEGA2560

MCU: AVR_ATmega328P/AVR_ATmega2560

Frequency: 16MHz/16MHz

2. Pin connection instructions

The display module is connected to the microcontroller using a DuPont cable, with specific instructions as follows:

2.8" TFT SPI 240X320 V1.0 Capacitive Touch Module Back Pins

Number	Module Pin	UNO development board wiring pin	Remarks
1	VCC	5V	LCD power positive
2	GND	GND	LCD Power ground
3	LCD_CS	10	LCD selection control signal, Low level active
4	LCD_RST	8	LCD reset control signal, Low level reset
5	LCD_RS	9	LCD command / data selection control signal. High level: data, low level: command
6	SDI(MOSI)	11	SPI bus write data signal(SD card and LCD screen used together)
7	SCK	13	SPI bus clock signal(SD card and LCD screen used together)
8	LED	5	LCD backlight control signal (If you need control, please connect the pins. If you don't need control, you can skip it)
9	SDO(MISO)	12	SPI bus read data signal (SD card and LCD screen used together)
10	CTP_SCL	A5	Capacitive touch screen IIC bus clock signal (modules without touch screens do not need to be connected)
11	CTP_RST	6	Capacitor touch screen reset control signal, low-level reset (modules without touch screens do not need to be connected)
12	CTP_SDA	A4	Capacitive touch screen IIC bus data signal (modules without touch screens do not need to be connected)
13	CTP_INT	7	Capacitor touch screen IIC bus touch interrupt signal, when generating touch, input low level to the main control (modules without touch screens do not need to be connected)
14	SD_CS	4	SD card selection control signal, low level active (without SD card function, can be disconnected)

Arduino MEGA2560 microcontroller test program wiring instructions

Number	Module Pin	Corresponding to MEGA2560 development board wiring pin	Remarks
		Hardware SPI	SoftWare SPI
1	VCC	5V		LCD power positive
2	GND	GND		LCD Power ground
3	LCD_CS	10		LCD selection control signal, Low level active
4	LCD_RST	8		LCD reset control signal, Low level reset
5	LCD_RS	9		LCD command / data selection control signal. High level: data, low level: command
6	SDI(MOSI)	51	11	SPI bus write data signal(SD card and LCD screen used together)
7	SCK	52	13	SPI bus clock signal(SD card and LCD screen used together)
8	LED	5		LCD backlight control signal (If you need control, please connect the pins. If you don't need control, you can skip it)
9	SDO(MISO)	50	12	SPI bus read data signal (SD card and LCD screen used together)
10	CTP_SCL	A5		Capacitive touch screen IIC bus clock signal (modules without touch screens do not need to be connected)
11	CTP_RST	6		Capacitor touch screen reset control signal, low-level reset (modules without touch screens do not need to be connected)
12	CTP_SDA	A4		Capacitive touch screen IIC bus data signal (modules without touch screens do not need to be connected)
13	CTP_INT	7		Capacitor touch screen IIC bus touch interrupt signal, when generating touch, input low level to the main control (modules without touch screens do not need to be connected)
14	SD_CS	4		SD card selection control signal, low level active (without SD card function, can be disconnected)

3. Demo Function Description

This testing program includes two MCU programs, Arduino UNO and Mega2560. Each MCU program includes software spi and hardware spi function programs, which are located in Demo_UNO_Mega2560 directory, as shown in the following figure:

File explorer showing the Demo_UNO_Mega2560 directory with subfolders for Hardware SPI and Software SPI.

The testing program includes the following test items:

A. Example_01_ Simple_ Test: A screen swiping test that does not rely on the library.
B. Example_02_ clear_ Screen: A simple screen brushing test that cycles the screen in the order of black, white, red, green, and blue colors.
C. Example_03_ colligate_ Test: A comprehensive test that displays graphics, lines, and counts program runtime.
D. Example_04_ display_ Graphics: A graphical display test that displays various graphics.
E. Example_05_ display_ Scroll: A scrolling test that displays text scrolling.
F. Example_06_ display_ String: A text display test that displays different sizes of Chinese and English.
G. Example_07_read_ Piexl: Tests for reading specified pixel color values.
H. Example_08_show_bmp_ Picture: A test for displaying BMP format images on SD cards.
I. Example_09_switch_ Test: A switch touch test that triggers the switch by clicking.
J. Example_10_display_ Phonecall: A touch test for telephone dialing, which simulates the dialing function through touch.
K. Example_11_touch_ Pen: A touch stroke test that uses a pen to draw on the LCD screen.
L. Example_12_ Show_ SDCardInfo: A test that displays the storage information of the SD card.
M. SDCard Extend Example: An SD test example that comes with the software.

4. Demo Usage Instructions

Installing development tool software

Download the installation package from the Arduino official website.

Download address: https://www.arduino.cc/en/software

Download the corresponding installation package according to your PC system, as shown in the following figure (the version in the picture may not be the latest version, and the download interface may not be the latest):

Arduino IDE 1.8.19 download options for Windows, Linux, and Mac OS X.

The open-source Arduino Software (IDE) makes it easy to write code and upload it to the board. This software can be used with any Arduino board.

Refer to the Getting Started page for Installation instructions.

SOURCE CODE

Active development of the Arduino software is hosted by GitHub. See the instructions for building the code. Latest release source code archives are available here. The archives are PGP-signed so they can be verified using this gpg key.

After the download is completed, unzip and click Install.

Installing software library

After the development environment is set up, the software library used by the sample program needs to be copied to the project library directory so that the sample program can be called. The software library is located in the Demo_UNO_Mega2560\Install libraries directory, as shown in the following figure:

File explorer showing the libraries within the Demo_UNO_Mega2560 installation directory: LCDWIKI_GUI, LCDWIKI_SPI, LCDWIKI_TOUCH.

Among them:

LCDWIKI_GUI is a graphical library for the application layer.
LCDWIKI_SPI is the SPI driver for the underlying display screen.
LCDWIKI_ TOUCH is a touch screen driver.

The default path for the engineering library directory is C:\Users\Administrator\Documents\Arduino\libraries. You can also change the project library directory: open the Arduino IDE software, click File ->Preferences, and reset the Sketchbook location in the pop-up interface, as shown in the following figure:

Arduino IDE Preferences window showing the Sketchbook location setting.

Copy the software library to the project library directory, as shown in the following figure:

File explorer showing the Arduino libraries directory with various library folders, including LCDWIKI_GUI, LCDWIKI_SPI, and LCDWIKI_TOUCH.

Compile and Run Programs

Connect the display module to the UNO or Mega2560 development board, and then power up the development board.
Open any example (using clear_screen as an example), as shown in the following figure:

Arduino IDE with the clear_screen.ino file open.

After opening the sample project, select the UNO or Mega2560 device, as shown in the following figure:

Arduino IDE showing the selection of the Arduino Uno board.

Select Mega2560:

Arduino IDE showing the selection of the Arduino Mega 2560 board and its processor.

Set the port. If you choose Mega2560, you also need to set the processor based on the development board used, as shown in the following figure:

Arduino IDE showing the selection of the correct COM port and processor for the Arduino Mega 2560.

Click the upload button to compile and download the program, as shown in the following figure:

Arduino IDE with the upload button highlighted.

If the following prompt appears, it indicates that the program has been compiled and downloaded successfully, and has already been run:

Arduino IDE output indicating successful compilation and upload.

If the display module displays content, it indicates that the program has run successfully.

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