1.7 KiB
Example: e-paper dispalys
This test code shows how to use ESP32 driver e-Paper displays
- Support for Waveshare 2.7inch e-Paper HAT based ePaper modules in 4-wire SPI mode
e-paper functions:
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Graphics drawing functions:
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Paint_Clear Clear all screen memery
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Paint_DrawAbsolutePixel This draws a pixel by absolute coordinates
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Paint_GetImage Getters and Setters
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Paint_SetRotate Setup displays rotate
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Paint_DrawPixel Draws a pixel by the coordinates
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Paint_DrawCharAt Draw a charactor on the frame buffer but not refresh
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Paint_DrawStringAt Displays a string on the frame buffer but not refresh
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Paint_DrawLine Draws a line on the frame buffer
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Paint_DrawHorizontalLine Draw a horizontal line on the frame buffer
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Paint_DrawVerticalLine Draw a vertical line on the frame buffer
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Paint_DrawRectangle Draws a rectangle
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Paint_DrawFilledRectangle Draws a filled rectangle
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Paint_DrawCircle Draws a circle
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Paint_DrawFilledCircle Draws a filled circle
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Fonts:
- Support for font8,font12,font16,font20,font24, fonts embeded
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String write function:
- EPD_print Write text to display.
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Images:
- Can display the image form C array
Connecting the display
- mosi: 23 (display DIN)
- sck: 18
- CS: 5 (display CS)
- DC: 26 (display DC)
- RST: 27 (display RESET)
- BUSY: 32 (display BUSY output)
How to build
make menuconfig
Make and flash the example.
make all && make flash
Test:
- Dispaly espressif logo for 2s
- display the random value on e-paper, refresh 5s