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epaperdisplay
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interfisch 2022-11-11 21:10:28 +01:00
parent 15e21f74cc
commit 14a61e97b8
1 changed files with 18 additions and 2 deletions
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20
src/main.cpp
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@ -1,6 +1,22 @@
// Library, connections and info from: https://www.waveshare.com/wiki/E-Paper_ESP32_Driver_Board#Resource // Library, connections and info from: https://www.waveshare.com/wiki/E-Paper_ESP32_Driver_Board#Resource
// Display: https://www.waveshare.com/product/4.2inch-e-paper.htm // Display: https://www.waveshare.com/product/4.2inch-e-paper.htm
//Convert to 1 bit grayscale:
//maybe dither before
// convert image to array:
// python3 img2array.py -i image.png
//Convert to 2 bit grayscale dithered:
// first convert image to dithered 2 bit image:
// convert testimage.png -dither FloydSteinberg -define dither:diffusion-amount=85% -remap 4gray.png -compress RLE -define png:color-type=6 output.png
// then image to array:
// python3 img2array.py --bitdepth 2 --lsbfirst --colorlsbfirst testimage.png
// then copy generated ...png.txt content to ImageData.cpp
/* Includes ------------------------------------------------------------------*/ /* Includes ------------------------------------------------------------------*/
#include "DEV_Config.h" #include "DEV_Config.h"
#include "EPD.h" #include "EPD.h"
@ -38,7 +54,7 @@ void setup()
printf("show image for array\r\n"); printf("show image for array\r\n");
Paint_SelectImage(BWImage); Paint_SelectImage(BWImage);
Paint_Clear(WHITE); Paint_Clear(WHITE);
Paint_DrawBitMap(gImage_4in2); //to convert image use: python3 img2array.py -i image.png Paint_DrawBitMap(gImage_4in2);
EPD_4IN2_Display(BWImage); EPD_4IN2_Display(BWImage);
free(BWImage); free(BWImage);
@ -64,7 +80,7 @@ void setup()
Paint_SelectImage(GSImage); Paint_SelectImage(GSImage);
Paint_SetScale(4); Paint_SetScale(4);
Paint_DrawBitMap(gImage_4in2); //to convert 2-bit gray image to array: convert testimage.png -dither FloydSteinberg -define dither:diffusion-amount=85% -remap 4gray.png -compress RLE BMP3:output.bmp Paint_DrawBitMap(gImage_4in2);
EPD_4IN2_4GrayDisplay(GSImage); EPD_4IN2_4GrayDisplay(GSImage);
DEV_Delay_ms(10000); DEV_Delay_ms(10000);