Added Arduino UNO R4 WiFi example for its LED matrix

examples/CheerLights_UNO_R4_WiFi_LED_Matrix/CheerLights_UNO_R4_WiFi_LED_Matrix.ino

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+/*
+'CheerLights_UNO_R4_WiFi_LED_Matrix' example demonstrates how to use the CheerLights Arduino library to fetch and display the current CheerLights color on an LED matrix on the Arduino Uno R4 WiFi.
+
+To join the CheerLights community, visit https://cheerlights.com.
+*/
+
+// Include the correct WiFi library based on the board
+#if defined(ESP8266)
+  #include <ESP8266WiFi.h>
+#elif defined(ESP32)
+  #include <WiFi.h>
+#elif defined(ARDUINO_SAMD_MKR1000)
+  // For Arduino MKR1000 using WiFi101 library
+  #include <WiFi101.h>
+#elif defined(ARDUINO_SAMD_MKRWIFI1010)
+  // For Arduino MKR WiFi 1010 using WiFiNINA library
+  #include <WiFiNINA.h>
+#elif defined(ARDUINO_AVR_UNO_WIFI_REV2)
+  // For Arduino Uno WiFi Rev2
+  #include <WiFiNINA.h>
+#elif defined(ARDUINO_ARCH_SAMD)
+  // For other SAMD boards
+  #include <WiFiNINA.h>
+#else
+  #include <WiFi.h>
+#endif
+
+// Include the CheerLights library and instantiate the CheerLights object
+#include <CheerLights.h>
+CheerLights CheerLights;
+
+// Include the secrets file that contains the WiFi credentials
+#include "secrets.h"
+
+unsigned long previousMillis = 0;
+const long updateInterval = 15000;
+
+// Include the ArduinoGraphics library and the Arduino LED Matrix library
+#include "ArduinoGraphics.h"
+#include "Arduino_LED_Matrix.h"
+
+ArduinoLEDMatrix matrix;
+
+byte cheerLightsIcon[8][12] = {
+  { 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 },
+  { 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1 },
+  { 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 },
+  { 1, 0, 1, 0, 1, 0, 1, 0, 0, 1, 0, 1 },
+  { 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1 },
+  { 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0 },
+  { 0, 0, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0 }
+};
+
+String currentColorName = "";
+String text = "";
+
+void setup() {
+  // Initialize serial communication
+  Serial.begin(115200);
+
+  // Initialize the LED matrix
+  matrix.begin();
+
+  // Initialize the CheerLights library and connect to the WiFi network
+  CheerLights.begin(SECRET_SSID, SECRET_PASSWORD);
+
+  // Get the current CheerLights color and update the text
+  CheerLights.getCurrentColor();
+  currentColorName = CheerLights.currentColorName();
+  text = "     Connecting to CheerLights     ";
+
+  // Display the CheerLights icon for 5 seconds
+  matrix.renderBitmap(cheerLightsIcon, 8, 12);
+  delay(5000);
+}
+
+void loop() {
+  unsigned long currentMillis = millis();
+
+  // Update the CheerLights color every updateInterval milliseconds
+  if (currentMillis - previousMillis >= updateInterval) {
+    previousMillis = currentMillis;
+
+    // Get the current CheerLights color and update the text if it has changed
+    CheerLights.getCurrentColor();
+
+    if (CheerLights.hasColorChanged()) {
+      currentColorName = CheerLights.currentColorName();
+      text = "    CheerLights: " + currentColorName + "    ";
+      Serial.print("CheerLights: ");
+      Serial.println(currentColorName);
+    }
+  }
+
+  // Display the scrolling text with the current CheerLights color
+  matrix.beginDraw();
+  matrix.stroke(0xFFFFFFFF);
+  matrix.textScrollSpeed(50);
+  matrix.textFont(Font_5x7);
+  matrix.beginText(0, 1, 0xFFFFFF);
+  matrix.println(text.c_str());
+  matrix.endText(SCROLL_LEFT);
+  matrix.endDraw();
+}

examples/CheerLights_UNO_R4_WiFi_LED_Matrix/secrets.h

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+#define SECRET_SSID     "MySSID"		// replace MySSID with your WiFi network name
+#define SECRET_PASSWORD "MyPassword"	// replace MyPassword with your WiFi password