clen_pins to release pins

fernandofussuma · fernandofussuma · commit 921312dad289 · 2015-12-30T14:28:55.000-02:00
diff --git a/examples/charlcd_matrix_example.rb b/examples/charlcd_matrix_example.rb
@@ -50,3 +50,5 @@ def rand_matrix(prng)
 
 lcd.no_blink
 lcd.clear
+
+lcd.clean_pins
