mirror of https://github.com/arendst/Tasmota.git
56 lines
1.7 KiB
Markdown
56 lines
1.7 KiB
Markdown
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# Example: e-paper dispalys
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### This test code shows how to use ESP32 driver e-Paper displays
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* Support for **Waveshare 2.7inch e-Paper HAT** based ePaper modules in 4-wire SPI mode
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#### 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**:
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* Support for **font8**,**font12**,**font16**,**font20**,**font24**, fonts embeded
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* **String write function**:
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* **EPD_print** Write text to display.
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* **Images**:
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* Can display the image form C array
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#### Connecting the display
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* mosi: 23 (display DIN)
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* sck: 18
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* CS: 5 (display CS)
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* DC: 26 (display DC)
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* RST: 27 (display RESET)
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* BUSY: 32 (display BUSY output)
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#### How to build
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`make menuconfig`
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Make and flash the example.
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`make all && make flash`
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#### Test:
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* Dispaly espressif logo for 2s
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* display the random value on e-paper, refresh 5s
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