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    examples/01-hello-world/01-hello-world.ino examples/01-hello-world/config.h

  • config.h

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    This is a crucial include that allows us to initialize the display. More information at the bottom of this file. Also, this header is declared in ZinggJM/GxEPD2:src/GxEPD2_BW.h

    #include <GxEPD2_BW.h>
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    E-paper pins

    #define EPD_CS 22
#define EPD_DC 15
#define EPD_RST 13
#define EPD_BUSY 34
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    We initialize the display here. This is a crucial piece of BOILERPLATE. This depends on us including the GxEPD2_BW.h header.

    static GxEPD2_BW<GxEPD2_420, GxEPD2_420::HEIGHT> display(
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    The display used by paperd.ink is called GDEW042T2. It is a 4.2” display and thus we use the GxEPD2_420 class/constructor. The parameters we pass are:

        GxEPD2_420(
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    Chip select pin

            EPD_CS,
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    Data/Command pin

            EPD_DC,
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    Reset pin

            EPD_RST,
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    Busy pin

            EPD_BUSY));