Merge pull request #2 from kattni/example-updates

Simplified simpletest, added press/release example

examples/trellism4_press_and_release.py

@@ -0,0 +1,14 @@
+import time
+import adafruit_trellism4
+
+trellis = adafruit_trellism4.TrellisM4Express()
+
+current_press = set()
+while True:
+    pressed = set(trellis.pressed_keys)
+    for press in pressed - current_press:
+        print("Pressed:", press)
+    for release in current_press - pressed:
+        print("Released:", release)
+    time.sleep(0.08)
+    current_press = pressed

examples/trellism4_simpletest.py

@@ -1,14 +1,8 @@
-import time
 import adafruit_trellism4
 
 trellis = adafruit_trellism4.TrellisM4Express()
 
-current_press = set()
 while True:
-    pressed = set(trellis.pressed_keys)
-    for press in pressed - current_press:
-        print("Pressed:", press)
-    for release in current_press - pressed:
-        print("Released:", release)
-    time.sleep(0.08)
-    current_press = pressed
+    pressed = trellis.pressed_keys
+    if pressed:
+        print("Pressed:", pressed)