Merge pull request #19 from FoamyGuy/9x_compatibility

9x compatibility

Author: FoamyGuy

adafruit_il91874.py

@@ -25,7 +25,13 @@
 
 """
 
-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_IL91874.git"
@@ -67,10 +73,10 @@
 
 
 # pylint: disable=too-few-public-methods
-class IL91874(displayio.EPaperDisplay):
+class IL91874(EPaperDisplay):
     """IL91874 display driver"""
 
-    def __init__(self, bus: displayio.FourWire, **kwargs) -> None:
+    def __init__(self, bus: FourWire, **kwargs) -> None:
         start_sequence = bytearray(_START_SEQUENCE)
 
         width = kwargs["width"]

examples/il91874_simpletest.py

@@ -14,6 +14,15 @@
 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:
+    # pylint: disable=ungrouped-imports
+    from displayio import FourWire
+
 import adafruit_il91874
 
 # Used to ensure the display is free in CircuitPython
@@ -27,7 +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

requirements.txt

@@ -3,3 +3,4 @@
 # SPDX-License-Identifier: Unlicense
 
 Adafruit-Blinka
+Adafruit-Blinka-Displayio