Added a new example for Unicorn Hat Mini

examples/target.py

@@ -0,0 +1,95 @@
+#!/usr/bin/env python3
+
+import time
+from gpiozero import Button
+from signal import pause
+from unicornhatmini import UnicornHATMini
+
+print("""Unicorn HAT Mini: target.py
+
+Demonstrates the use of Unicorn HAT Mini's buttons to control c>
+
+Press Ctrl+C to exit!
+
+""")
+
+uh = UnicornHATMini()
+x = 0
+y = 0
+
+def display():
+    uh.clear()
+    for i in range(17):
+        for j in range(7):
+            if (i == x) or (j == y):
+                if (i == x) and (j == y):
+                    uh.set_pixel(i, j, 255, 0, 0)
+                else:
+                    uh.set_pixel(i, j, 0, 255, 0)
+    uh.show()
+
+def up():
+    global y
+    if y == 0:
+        y = 6
+    else:
+        y = y - 1
+
+def down():
+    global y
+    if y == 6:
+        y = 0
+    else:
+        y = y + 1
+
+def left():
+    global x
+    if x == 0:
+        x = 16
+    else:
+        x = x - 1
+
+def right():
+    global x
+    if x == 16:
+        x = 0
+    else:
+        x = x + 1
+
+def pressed(button):
+    button_name = button_map[button.pin.number]
+    if button == button_a:
+        up()
+    if button == button_b:
+        down()
+    if button == button_x:
+        left()
+    if button == button_y:
+        right()
+    display()
+
+button_map = {5: "A",
+              6: "B",
+              16: "X",
+              24: "Y"}
+
+button_a = Button(5)
+button_b = Button(6)
+button_x = Button(16)
+button_y = Button(24)
+
+display()
+
+try:
+    button_a.when_pressed = pressed
+    button_b.when_pressed = pressed
+    button_x.when_pressed = pressed
+    button_y.when_pressed = pressed
+
+    pause()
+
+except KeyboardInterrupt:
+    button_a.close()
+    button_b.close()
+    button_x.close()
+    button_y.close()