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

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+// Program to demonstrate the MD_Parola library
+//
+// Uses the Arduino Print Class extension with various output types
+//
+// 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>
+
+const uint16_t WAIT_TIME = 1000;
+
+// 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();
+}
+
+void loop(void)
+{
+  P.print("Hello");
+  delay(WAIT_TIME);
+  P.print(1234, DEC);
+  delay(WAIT_TIME);
+  P.print(1234, HEX);
+  delay(WAIT_TIME);
+  P.print(12.5);      // float not supported by Arduino Print class
+  delay(WAIT_TIME);
+  P.print(9876l);
+  delay(WAIT_TIME);
+  P.println("end");   // only get the /r/n characters - avoid using println
+  delay(WAIT_TIME);
+  P.write('A');
+  delay(WAIT_TIME);
+  P.write('B');
+  delay(WAIT_TIME);
+  P.write('C');
+  delay(WAIT_TIME);
+}