got OLED working

user_program/usb4vc_ui.py

@@ -0,0 +1,16 @@
+import time
+import sys
+import RPi.GPIO as GPIO
+
+BUTTON_GPIO = 16
+
+def button_pressed_callback(channel):
+    print(time.time(), "Button pressed!")
+
+GPIO.setmode(GPIO.BCM)
+GPIO.setup(BUTTON_GPIO, GPIO.IN, pull_up_down=GPIO.PUD_UP)
+# https://sourceforge.net/p/raspberry-gpio-python/wiki/Inputs/
+GPIO.add_event_detect(BUTTON_GPIO, GPIO.FALLING, callback=button_pressed_callback, bouncetime=100)
+
+while 1:
+    time.sleep(1)