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On this page
  • 1.8 inch Spi TFT Display 128 x 160 pixels
  • Product Link
  • Introduction
  • Features
  • Specifications
  • Pinout
  • Dimensions
  • How to Use
  • Program Description

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Last updated 9 months ago

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1.8 inch Spi TFT Display 128 x 160 pixels


Product Link

Introduction

This is a general LCD display Module, 1.8inch diagonal, 128x160 pixels, with embedded controller, communicating via SPI interface.

Features

  • SPI interface, requires minimum GPIO for controlling

  • Comes with development resources and manual (examples for Raspberry Pi/Arduino/STM32)

Specifications

  • Driver: ST7735S

  • Interface: SPI

  • Display color: RGB, 65K color

  • Resolution: 128x160

  • Backlight: LED

  • Operating voltage: 3.3V/5V

Pinout

SYMBOL
DESCRIPTION

VCC

Power (3.3V/5V input)

GND

Ground

DIN

SPI data input

CLK

SPI clock input

CS

Chip selection, low active

DC

Data/Command selection (high for data, low for command)

RST

Reset, low active

BL

Backlight

Dimensions

How to Use

Arduino software description

Run program

Please select the corresponding program according to the LCD screen model to open:

You can view test programs for all screen sizes, sorted by size: For example, a 1.54-inch LCD Module. Open the LCD_1inch54 folder and run the LCD_1inch54.ino file. Open the demo, select the development board model Arduino UNO.

Select the corresponding COM port:

Then click to compile and download.

Program Description

Document Introduction

Take Arduino UNO controlling a 1.54-inch LCD as an example, open the Arduino\LCD_1inch54 directory:

Of which: LCD_1inch54.ino: open with Arduino IDE; LCD_Driver.cpp(.h): is the driver of the LCD screen; DEV_Config.cpp(.h): It is the hardware interface definition, which encapsulates the read and write pin levels, SPI transmission data, and pin initialization; font8.cpp, font12.cpp, font16.cpp, font20.cpp, font24.cpp, font24CN.cpp, fonts.h: fonts for characters of different sizes; image.cpp(.h): is the image data, which can convert any BMP image into a 16-bit true color image array through Img2Lcd (downloadable in the development data). The program is divided into bottom-layer hardware interface, middle-layer LCD screen driver, and upper-layer application;

Underlying hardware interface

The hardware interface is defined in the two files DEV_Config.cpp(.h), and functions such as read and write pin level, delay, and SPI transmission are encapsulated.

  • write pin level

void DEV_Digital_Write(int pin, int value)

The first parameter is the pin, and the second is the high and low level.

  • Read pin level

int DEV_Digital_Read(int pin)

The parameter is the pin, and the return value is the level of the read pin.

  • Delay

DEV_Delay_ms(unsigned int delaytime)

millisecond level delay.

  • SPI output data

DEV_SPI_WRITE(unsigned char data)

The parameter is char type, occupying 8 bits.

The upper application

For the screen, if you need to draw pictures, display Chinese and English characters, display pictures, etc., you can use the upper application to do, and we provide some basic functions here about some graphics processing in the directory GUI_Paint.c(.h) Note: Because of the size of the internal RAM of STM32 and arduino, the GUI is directly written to the RAM of the LCD.

The fonts used by the GUI all depend on the font*.cpp(h) files under the same file

  • New Image Properties: Create a new image property, this property includes the image buffer name, width, height, flip Angle, color.

void Paint_NewImage(UWORD Width, UWORD Height, UWORD Rotate, UWORD Color)
Parameters:
    Width: image buffer Width;
    Height: the Height of the image buffer;
    Rotate: Indicates the rotation Angle of an image
    Color: the initial Color of the image;
  • Set the clear screen function, usually call the clear function of LCD directly.

void Paint_SetClearFuntion(void (*Clear)(UWORD));
parameter:
    Clear : Pointer to the clear screen function, used to quickly clear the screen to a certain color;
  • Set the drawing pixel function.

void Paint_SetDisplayFuntion(void (*Display)(UWORD,UWORD,UWORD));
parameter:
    Display: Pointer to the pixel drawing function, which is used to write data to the specified location in the internal RAM of the LCD;
  • Select image buffer:the purpose of the selection is that you can create multiple image attributes, image buffer can exist multiple, you can select each image you create.

void Paint_SelectImage(UBYTE *image)
Parameters:
    Image: the name of the image cache, which is actually a pointer to the first address of the image buffer
  • Image Rotation: Set the selected image rotation Angle, preferably after Paint_SelectImage(), you can choose to rotate 0, 90, 180, 270.

void Paint_SetRotate(UWORD Rotate)
Parameters:
    Rotate: ROTATE_0, ROTATE_90, ROTATE_180, and ROTATE_270 correspond to 0, 90, 180, and 270 degrees respectively;
  • Image mirror flip: Set the mirror flip of the selected image. You can choose no mirror, horizontal mirror, vertical mirror,or image center mirror.

void Paint_SetMirroring(UBYTE mirror)
Parameters:
    Mirror: indicates the image mirroring mode. MIRROR_NONE, MIRROR_HORIZONTAL, MIRROR_VERTICAL, MIRROR_ORIGIN correspond to no mirror, horizontal mirror, vertical mirror, and about image center mirror respectively.
  • Set points of display position and color in the buffer: here is the core GUI function, processing points display position and color in the buffer.

void Paint_SetPixel(UWORD Xpoint, UWORD Ypoint, UWORD Color)
Parameters:
    Xpoint: the X position of a point in the image buffer
    Ypoint: Y position of a point in the image buffer
    Color: indicates the Color of the dot
  • Image buffer fill color: Fills the image buffer with a color, usually used to flash the screen into blank.

void Paint_ClearWindows(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color)
Parameters:
    Xstart: the x-starting coordinate of the window
    Ystart: indicates the Y starting point of the window
    Xend: the x-end coordinate of the window
    Yend: indicates the y-end coordinate of the window
    Color: fill Color
  • Draw points: In the image buffer, draw points on (Xpoint, Ypoint), you can choose the color, the size of the point, the style of the point.

void Paint_DrawPoint(UWORD Xpoint, UWORD Ypoint, UWORD Color, DOT_PIXEL Dot_Pixel, DOT_STYLE Dot_Style)
Parameters:
    Xpoint: indicates the X coordinate of a point
    Ypoint: indicates the Y coordinate of a point
    Color: fill Color
    Dot_Pixel: The size of the dot, providing a default of eight size points
        typedef enum {
                DOT_PIXEL_1X1  = 1,	        // 1 x 1
                DOT_PIXEL_2X2  , 		// 2 X 2
                DOT_PIXEL_3X3  , 	 	// 3 X 3
                DOT_PIXEL_4X4  , 	 	// 4 X 4
                DOT_PIXEL_5X5  , 		// 5 X 5
                DOT_PIXEL_6X6  , 		// 6 X 6
                DOT_PIXEL_7X7  , 		// 7 X 7
                DOT_PIXEL_8X8  , 		// 8 X 8
        } DOT_PIXEL;
    Dot_Style: the size of a point that expands from the center of the point or from the bottom left corner of the point to the right and up
        typedef enum {
                DOT_FILL_AROUND  = 1,
                DOT_FILL_RIGHTUP,
        } DOT_STYLE;
  • Line drawing: In the image buffer, line from (Xstart, Ystart) to (Xend, Yend), you can choose the color, line width, line style.

void Paint_DrawLine(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, LINE_STYLE Line_Style ,  LINE_STYLE Line_Style)
Parameters:
        Xstart: the x-starting coordinate of a line
        Ystart: indicates the Y starting point of a line
        Xend: x-terminus of a line
        Yend: the y-end coordinate of a line
        Color: fill Color
        Line_width: The width of the line, which provides a default of eight widths
                typedef enum {
                        DOT_PIXEL_1X1  = 1,	        // 1 x 1
                        DOT_PIXEL_2X2  , 		// 2 X 2
                        DOT_PIXEL_3X3  ,		// 3 X 3
                        DOT_PIXEL_4X4  ,		// 4 X 4
                        DOT_PIXEL_5X5  , 		// 5 X 5
                        DOT_PIXEL_6X6  , 		// 6 X 6
                        DOT_PIXEL_7X7  , 		// 7 X 7
                        DOT_PIXEL_8X8  , 		// 8 X 8
                    } DOT_PIXEL;
        Line_Style: line style. Select whether the lines are joined in a straight or dashed way
                typedef enum {
                        LINE_STYLE_SOLID = 0,
                        LINE_STYLE_DOTTED,
                } LINE_STYLE;
  • Draw rectangle: In the image buffer, draw a rectangle from (Xstart, Ystart) to (Xend, Yend), you can choose the color, the width of the line, whether to fill the inside of the rectangle.

void Paint_DrawRectangle(UWORD Xstart, UWORD Ystart, UWORD Xend, UWORD Yend, UWORD Color, DOT_PIXEL Line_width,  DRAW_FILL Draw_Fill)
Parameters:
        Xstart: the starting X coordinate of the rectangle
        Ystart: indicates the Y starting point of the rectangle
        Xend: X terminus of the rectangle
        Yend: specifies the y-end coordinate of the rectangle
        Color: fill Color
        Line_width: The width of the four sides of a rectangle. Default eight widths are provided
        typedef enum {
                DOT_PIXEL_1X1  = 1,	        // 1 x 1
                DOT_PIXEL_2X2  , 		// 2 X 2
                DOT_PIXEL_3X3  ,		// 3 X 3
                DOT_PIXEL_4X4  ,		// 4 X 4
                DOT_PIXEL_5X5  , 		// 5 X 5
                DOT_PIXEL_6X6  , 		// 6 X 6
                DOT_PIXEL_7X7  , 		// 7 X 7
                DOT_PIXEL_8X8  , 		// 8 X 8
        } DOT_PIXEL;
        Draw_Fill: Fill, whether to fill the inside of the rectangle
        typedef enum {
                DRAW_FILL_EMPTY = 0,
                DRAW_FILL_FULL,
        } DRAW_FILL;
  • Draw circle: In the image buffer, draw a circle of Radius with (X_Center Y_Center) as the center. You can choose the color, the width of the line, and whether to fill the inside of the circle.

void Paint_DrawCircle(UWORD X_Center, UWORD Y_Center, UWORD Radius, UWORD Color, DOT_PIXEL Line_width,  DRAW_FILL Draw_Fill)
Parameters:
        X_Center: the x-coordinate of the center of a circle
        Y_Center: Y coordinate of the center of a circle
        Radius: indicates the Radius of a circle
        Color: fill Color
        Line_width: The width of the arc, with a default of 8 widths
        typedef enum {
                DOT_PIXEL_1X1  = 1,	        // 1 x 1
                DOT_PIXEL_2X2  , 		// 2 X 2
                DOT_PIXEL_3X3  ,		// 3 X 3
                DOT_PIXEL_4X4  ,		// 4 X 4
                DOT_PIXEL_5X5  , 		// 5 X 5
                DOT_PIXEL_6X6  , 		// 6 X 6
                DOT_PIXEL_7X7  , 		// 7 X 7
                DOT_PIXEL_8X8  , 		// 8 X 8
        } DOT_PIXEL;
        Draw_Fill: fill, whether to fill the inside of the circle
        typedef enum {
                DRAW_FILL_EMPTY = 0,
                DRAW_FILL_FULL,
        } DRAW_FILL;
  • Write Ascii character: In the image buffer, at (Xstart Ystart) as the left vertex, write an Ascii character, you can select Ascii visual character library, font foreground color, font background color.

void Paint_DrawChar(UWORD Xstart, UWORD Ystart, const char Ascii_Char, sFONT* Font, UWORD Color_Foreground,  UWORD Color_Background)
Parameters:
        Xstart: the x-coordinate of the left vertex of a character
        Ystart: the Y coordinate of the font's left vertex
        Ascii_Char: indicates the Ascii character
        Font: Ascii visual character library, in the Fonts folder provides the following Fonts:
                Font8: 5*8 font
                Font12: 7*12 font
                Font16: 11*16 font
                Font20: 14*20 font
                Font24: 17*24 font
        Color_Foreground: Font color
        Color_Background: indicates the background color
  • Write English string: In the image buffer, use (Xstart Ystart) as the left vertex, write a string of English characters, can choose Ascii visual character library, font foreground color, font background color.

void Paint_DrawString_EN(UWORD Xstart, UWORD Ystart, const char * pString, sFONT* Font, UWORD Color_Foreground,  UWORD Color_Background)
Parameters:
        Xstart: the x-coordinate of the left vertex of a character
        Ystart: the Y coordinate of the font's left vertex
        PString: string, string is a pointer
        Font: Ascii visual character library, in the Fonts folder provides the following Fonts:
                Font8: 5*8 font
                Font12: 7*12 font
                Font16: 11*16 font
                Font20: 14*20 font
                Font24: 17*24 font
        Color_Foreground: Font color
        Color_Background: indicates the background color
  • Write Chinese string: in the image buffer, use (Xstart Ystart) as the left vertex, write a string of Chinese characters, you can choose GB2312 encoding character font, font foreground color, font background color.

void Paint_DrawString_CN(UWORD Xstart, UWORD Ystart, const char * pString, cFONT* font, UWORD Color_Foreground,  UWORD Color_Background)
Parameters:
        Xstart: the x-coordinate of the left vertex of a character
        Ystart: the Y coordinate of the font's left vertex
        PString: string, string is a pointer
        Font: GB2312 encoding character Font library, in the Fonts folder provides the following Fonts:
                Font12CN: ASCII font 11*21, Chinese font 16*21
                Font24CN: ASCII font24 *41, Chinese font 32*41
                Color_Foreground: Font color
                Color_Background: indicates the background color
  • Write numbers: In the image buffer,use (Xstart Ystart) as the left vertex, write a string of numbers, you can choose Ascii visual character library, font foreground color, font background color.

void Paint_DrawNum(UWORD Xpoint, UWORD Ypoint, double Nummber, sFONT* Font, UWORD Digit, UWORD Color_Foreground,   UWORD Color_Background)
Parameters:
        Xpoint: the x-coordinate of the left vertex of a character
        Ypoint: the Y coordinate of the left vertex of the font
        Nummber: indicates the number displayed, which can be a decimal
        Digit: It's a decimal number
        Font: Ascii visual character library, in the Fonts folder provides the following Fonts:
                Font8: 5*8 font
                Font12: 7*12 font
                Font16: 11*16 font
                Font20: 14*20 font
                Font24: 17*24 font
        Color_Foreground: Font color
        Color_Background: indicates the background color
  • Write numbers with decimals: at (Xstart Ystart) as the left vertex, write a string of numbers with decimals, you can choose Ascii code visual character font, font foreground color, font background color

void Paint_DrawFloatNum(UWORD Xpoint, UWORD Ypoint, double Nummber, UBYTE Decimal_Point, sFONT* Font, UWORD Color_Foreground, UWORD Color_Background);
parameter:
         Xstart: the X coordinate of the left vertex of the character
         Ystart: Y coordinate of the left vertex of the font
         Nummber: the displayed number, which is saved in double type here
         Decimal_Point: Displays the number of digits after the decimal point
         Font: Ascii code visual character font library, the following fonts are provided in the Fonts folder:
                Font8: 5*8 font
                Font12: 7*12 font
                Font16: 11*16 font
                Font20: 14*20 font
                Font24: 17*24 font
        Color_Foreground: font color
        Color_Background: background color
  • Display time: in the image buffer,use (Xstart Ystart) as the left vertex, display time,you can choose Ascii visual character font, font foreground color, font background color.

void Paint_DrawTime(UWORD Xstart, UWORD Ystart, PAINT_TIME *pTime, sFONT* Font, UWORD Color_Background,  UWORD Color_Foreground)
Parameters:
        Xstart: the x-coordinate of the left vertex of a character
        Ystart: the Y coordinate of the font's left vertex
        PTime: display time, here defined a good time structure, as long as the hour, minute and second bits of data to the parameter;
        Font: Ascii visual character library, in the Fonts folder provides the following Fonts:
                Font8: 5*8 font
                Font12: 7*12 font
                Font16: 11*16 font
                Font20: 14*20 font
                Font24: 17*24 font
        Color_Foreground: Font color
        Color_Background: indicates the background color
  • Display image: at (Xstart Ystart) as the left vertex, display an image whose width is W_Image and height is H_Image;

void Paint_DrawImage(const unsigned char *image, UWORD xStart, UWORD yStart, UWORD W_Image, UWORD H_Image)
parameter:
       image: image address, pointing to the image information you want to display
       Xstart: the X coordinate of the left vertex of the character
       Ystart: Y coordinate of the left vertex of the font
       W_Image: Image width
       H_Image: Image height

Note: The demos are all tested on Arduino uno. If you need other types of Arduino, you need to determine whether the connected pins are correct.

In the product encyclopedia interface download , and then unzip it. The Arduino program is located at ~/Arduino/…

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the program
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