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arduino-cli/libraries/MD_Parola/examples/Parola_HelloWorld/Parola_HelloWorld.ino

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+// Program to demonstrate the MD_Parola library
+//
+// Simplest program that does something useful - Hello World!
+//
+// NOTE: MD_MAX72xx library must be installed and configured for the LED
+// matrix type being used. Refer documentation included in the MD_MAX72xx
+// library or see this link:
+// https://majicdesigns.github.io/MD_MAX72XX/page_hardware.html
+//
+
+#include <MD_Parola.h>
+#include <MD_MAX72xx.h>
+#include <SPI.h>
+
+// Define the number of devices we have in the chain and the hardware interface
+// NOTE: These pin numbers will probably not work with your hardware and may
+// need to be adapted
+#define MAX_DEVICES 4
+#define CLK_PIN   13
+#define DATA_PIN  11
+#define CS_PIN    10
+
+// Hardware SPI connection
+MD_Parola P = MD_Parola(CS_PIN, MAX_DEVICES);
+// Arbitrary output pins
+// MD_Parola P = MD_Parola(DATA_PIN, CLK_PIN, CS_PIN, MAX_DEVICES);
+
+void setup(void)
+{
+  P.begin();
+  P.displayText("Hello", PA_CENTER, 0, 0, PA_PRINT, PA_NO_EFFECT);
+}
+
+void loop(void)
+{
+  P.displayAnimate();
+}