update for CircuitPython 8.x+/9.0 displayio compatibility

Author: CedarGroveStudios

cedargrove_touchcalibrator/built_in.py

@@ -71,14 +71,15 @@ class Colors:
 if DISPLAY_ROTATION is not None and DISPLAY_ROTATION in (0, 90, 180, 270):
     display.rotation = DISPLAY_ROTATION
 else:
-    print("Warning: invalid rotation value -- defalting to zero")
+    print("Warning: invalid rotation value -- defaulting to zero")
     display.rotation = 0
     time.sleep(1)
 
 # Activate the display graphics unless REPL_ONLY=True.
 if not REPL_ONLY:
     display_group = displayio.Group()
-    display.show(display_group)
+    # display.show(display_group)
+    display.root_group = display_group
 
 # Instantiate touch screen without calibration or display size parameters
 if display.rotation == 0:

cedargrove_touchcalibrator/featherwing.py

@@ -101,14 +101,15 @@
 if DISPLAY_ROTATION is not None and DISPLAY_ROTATION in (0, 90, 180, 270):
     display.rotation = DISPLAY_ROTATION
 else:
-    print("Warning: invalid rotation value -- defalting to zero")
+    print("Warning: invalid rotation value -- defaulting to zero")
     display.rotation = 0
     time.sleep(1)
 
 # Activate the display graphics unless REPL_ONLY=True.
 if not REPL_ONLY:
     display_group = displayio.Group()
-    display.show(display_group)
+    # display.show(display_group)
+    display.root_group = display_group
 
 # Instantiate touchscreen.
 ts_cs = digitalio.DigitalInOut(board.D6)