Merge pull request #1 from FoamyGuy/root_group_update

9.x Compatibility changes

Author: dhalbert

adafruit_ek79686.py

@@ -26,7 +26,14 @@
 """
 
 import math
-import displayio
+
+# Compatibility with both CircuitPython 8.x.x and 9.x.x.
+# Remove after 8.x.x is no longer a supported release.
+try:
+    from epaperdisplay import EPaperDisplay
+    from fourwire import FourWire
+except ImportError:
+    from displayio import EPaperDisplay, FourWire
 
 __version__ = "0.0.0+auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_EK79686.git"
@@ -54,10 +61,10 @@
 
 
 # pylint: disable=too-few-public-methods
-class EK79686(displayio.EPaperDisplay):
+class EK79686(EPaperDisplay):
     """EK79686 display driver"""
 
-    def __init__(self, bus: displayio.FourWire, **kwargs) -> None:
+    def __init__(self, bus: FourWire, **kwargs) -> None:
         start_sequence = bytearray(_START_SEQUENCE)
 
         width = 8 * math.ceil(kwargs["width"] / 8)

examples/ek79686_simpletest.py

@@ -15,6 +15,14 @@
 import time
 import board
 import displayio
+
+# Compatibility with both CircuitPython 8.x.x and 9.x.x.
+# Remove after 8.x.x is no longer a supported release.
+try:
+    from fourwire import FourWire
+except ImportError:
+    from displayio import FourWire
+
 import adafruit_ek79686
 
 # Used to ensure the display is free in CircuitPython
@@ -28,7 +36,7 @@
 epd_busy = board.D6
 
 # Create the displayio connection to the display pins
-display_bus = displayio.FourWire(
+display_bus = FourWire(
     spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
 )
 time.sleep(1)  # Wait a bit
@@ -60,7 +68,7 @@
     g.append(t)
 
     # Place the display group on the screen (does not refresh)
-    display.show(g)
+    display.root_group = g
 
     # Show the image on the display
     display.refresh()