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GxEPD2_HelloWorld/GxEPD2_HelloWorld.ino

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+// GxEPD2_HelloWorld.ino by Jean-Marc Zingg
+
+// see GxEPD2_wiring_examples.h for wiring suggestions and examples
+// if you use a different wiring, you need to adapt the constructor parameters!
+
+// uncomment next line to use class GFX of library GFX_Root instead of Adafruit_GFX
+//#include <GFX.h>
+
+#include <GxEPD2_BW.h>
+#include <GxEPD2_3C.h>
+#include <GxEPD2_7C.h>
+#include <Fonts/FreeMonoBold9pt7b.h>
+
+// select the display class and display driver class in the following file (new style):
+#include "GxEPD2_display_selection_new_style.h"
+
+// or select the display constructor line in one of the following files (old style):
+#include "GxEPD2_display_selection.h"
+#include "GxEPD2_display_selection_added.h"
+
+// alternately you can copy the constructor from GxEPD2_display_selection.h or GxEPD2_display_selection_added.h to here
+// e.g. for Wemos D1 mini:
+//GxEPD2_BW<GxEPD2_154_D67, GxEPD2_154_D67::HEIGHT> display(GxEPD2_154_D67(/*CS=D8*/ SS, /*DC=D3*/ 0, /*RST=D4*/ 2, /*BUSY=D2*/ 4)); // GDEH0154D67
+// Connections for e.g. Waveshare ESP32 e-Paper Driver Board
+static const uint8_t EPD_BUSY = 25;
+static const uint8_t EPD_CS   = 15;
+static const uint8_t EPD_RST  = 26;
+static const uint8_t EPD_DC   = 27;
+static const uint8_t EPD_SCK  = 13;
+static const uint8_t EPD_MISO = 12; // Master-In Slave-Out not used, as no data from display
+static const uint8_t EPD_MOSI = 14;
+GxEPD2_3C<GxEPD2_750c_Z08, GxEPD2_750c_Z08::HEIGHT / 2> display(GxEPD2_750c_Z08(EPD_CS, EPD_DC, EPD_RST, EPD_BUSY)); // GDEW075Z08 800x480, GD7965
+
+void setup()
+{
+  //display.init(115200); // default 10ms reset pulse, e.g. for bare panels with DESPI-C02
+  display.init(115200, true, 2, false); // USE THIS for Waveshare boards with "clever" reset circuit, 2ms reset pulse
+  helloWorld();
+  display.hibernate();
+}
+
+const char HelloWorld[] = "Hello World!";
+
+void helloWorld()
+{
+  display.setRotation(1);
+  display.setFont(&FreeMonoBold9pt7b);
+  display.setTextColor(GxEPD_BLACK);
+  int16_t tbx, tby; uint16_t tbw, tbh;
+  display.getTextBounds(HelloWorld, 0, 0, &tbx, &tby, &tbw, &tbh);
+  // center the bounding box by transposition of the origin:
+  uint16_t x = ((display.width() - tbw) / 2) - tbx;
+  uint16_t y = ((display.height() - tbh) / 2) - tby;
+  display.setFullWindow();
+  display.firstPage();
+  do
+  {
+    display.fillScreen(GxEPD_WHITE);
+    display.setCursor(x, y);
+    display.print(HelloWorld);
+  }
+  while (display.nextPage());
+}
+
+void loop() {};