Add T-block led matrix example

examples/T-Block/LEDMatrix/LEDMatrix.ino

@@ -0,0 +1,36 @@
+
+#pragma mark - Depend MAX7219LedMatrix library
+/*
+cd ~/Arduino/libraries
+git clone https://github.com/Xinyuan-LilyGO/MAX7219LedMatrix
+*/
+
+
+#include <SPI.h>
+#include <LedMatrix.h>
+
+#define NUMBER_OF_DEVICES 8
+
+//! T-Block led Matrix
+#define MATRIX_MSIO 23  //No use
+#define MATRIX_MOSI 18
+#define MATRIX_CS   19
+#define MATRIX_SCLK 14
+
+LedMatrix ledMatrix = LedMatrix(NUMBER_OF_DEVICES, MATRIX_CS);
+
+void setup()
+{
+    SPI.begin(MATRIX_SCLK, MATRIX_MSIO, MATRIX_MOSI, MATRIX_CS);
+    ledMatrix.init();
+    ledMatrix.setText("Hello world");
+}
+
+void loop()
+{
+    ledMatrix.clear();
+    ledMatrix.scrollTextLeft();
+    ledMatrix.drawText();
+    ledMatrix.commit();
+    delay(50);
+}