Adding multikey example.

examples/neokey_1x4_multikey.py

@@ -0,0 +1,37 @@
+# SPDX-FileCopyrightText: 2021 Kattni Rembor for Adafruit Industries
+# SPDX-License-Identifier: MIT
+"""Example for connecting two NeoKey 1x4 breakouts. Requires bridging the A0 jumper on one board."""
+import board
+from adafruit_neokey.neokey1x4 import NeoKey1x4
+
+try:
+    from _pixelbuf import colorwheel
+except ImportError:
+    from adafruit_pypixelbuf import colorwheel
+
+# Create a NeoKey object
+neokey1 = NeoKey1x4(board.I2C())
+neokey2 = NeoKey1x4(board.I2C(), addr=0x31)
+
+keys = [
+    (neokey1, 0, colorwheel(0)),
+    (neokey1, 1, colorwheel(32)),
+    (neokey1, 2, colorwheel(64)),
+    (neokey1, 3, colorwheel(96)),
+    (neokey2, 0, colorwheel(128)),
+    (neokey2, 1, colorwheel(160)),
+    (neokey2, 2, colorwheel(192)),
+    (neokey2, 3, colorwheel(224)),
+]
+
+off = (0, 0, 0)
+
+# Check each button, if pressed, light up the matching NeoPixel!
+while True:
+    for i in range(8):
+        neokey, key_number, color = keys[i]
+        if neokey[key_number]:
+            print("Button", i)
+            neokey.pixels[key_number] = color
+        else:
+            neokey.pixels[key_number] = off