Template: 1.3inch OLED A Arduino
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User Guides of Arduino
Hardware Connection
| OLED | UNO |
| VCC | 3.3V/5V |
| GND | GND |
| DIN | SPI:D11 / I2C:SDA |
| CLK | SPI:D13 / I2C:SCL |
| CS | D10 |
| DC | D7 |
| RST | D8 |
- Four-wire SPI wiring diagram
How to Install Arduino IDE
Run the demo
- Download the demo and find the Arduino demo file directory.
- Use Arduino IDE to open the .ino file in the project folder of the corresponding model, recompile and download the demo to your board.
- For example, if you are using the 1.3inch OLED Module (C), open OLED_1in3_c.ino under the \Arduino\OLED_1in3_c directory.
Software description
- Download the demo on the Resources, open the Arduino demo file directory, you can see the Arduino program of different models of OLED.
- Choose the folder according to the LCD model you are using, and open the xxx.ino file. Take the 1.3inch OLED Module (C) as an example: open OLED_1in3_c, then double-click OLED_1in3_c.ino to open the Arduino project.
- The demo folder of each LCD model can fine in the following table:
| LCD Model | Demo folder |
|---|---|
| 0.91inch OLED Module | OLED_0in91 |
| 0.95inch RGB OLED (A)/(B) | OLED_0in95_rgb |
| 0.96inch OLED (A)/(B) | OLED_0in96 |
| 1.3inch OLED (A)/(B) | OLED_1in3 |
| 1.3inch OLED Module (C) | OLED_1in3_c |
| 1.5inch OLED Module | OLED_1in5 |
| 1.5inch RGB OLED Module | OLED_1in5_rgb |
Program description
Underlying hardware interface
Because the hardware platform and the internal implementation are different. If you need to know the internal implementation, you can see many definitions in the directory DEV_Config.c(.h)
- Interface selection
#define USE_SPI_4W 1
#define USE_IIC 0
#define USE_IIC_SOFT 0
Note:
Switch SPI/I2C directly modified here
- Data type
#define UBYTE uint8_t #define UWORD uint16_t #define UDOUBLE uint32_t
- Module initialization and exit processing
UBYTE System_Init(void); void System_Exit(void); Note: 1.here is some GPIO processing before and after using the LCD screen. 2.After the System_Exit(void) function is used, the OLED display will be turned off;
- Write and read GPIO
void DEV_Digital_Write(UWORD Pin, UBYTE Value); UBYTE DEV_Digital_Read(UWORD Pin);
- SPI write data
UBYTE SPI4W_Write_Byte(uint8_t value);
- IIC write data
void I2C_Write_Byte(uint8_t value, uint8_t Cmd);
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 STM32\STM32F103RB\User\GUI\GUI_Paint.c(.h)
The character font which GUI dependent is in the directory STM32\STM32F103RB\User\Fonts
- 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 OLED 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 OLED;
- 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
- 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