Initial commit

src/util.h

@@ -0,0 +1,18 @@
+#pragma once
+
+enum Brightness {
+    Normal,
+    Bright,
+};
+
+void sendTextToSign(String text, Brightness brightness = Bright) {
+    // debugging
+    Serial.print("Sending text \"");
+    Serial.print(text);
+    Serial.println("\"");
+
+    // TODO: find out how the brightness attribute in the LED sign is encoded in the UART signal
+    Serial1.print("f01A\\s");
+    Serial1.print(text);
+    Serial1.print("\r\r\r");
+}