FourWire support for 8.x.x and 9.x.x

Author: dhalbert

adafruit_ssd1681.py

@@ -25,7 +25,13 @@
 
 """
 
-import displayio
+# Support both 8.x.x and 9.x.x. Change when 8.x.x is discontinued as a stable release.
+try:
+    from fourwire import FourWire
+    from epaperdisplay import EPaperDisplay
+except ImportError:
+    from displayio import FourWire
+    from displayio import EPaperDisplay
 
 __version__ = "0.0.0+auto.0"
 __repo__ = "https://github.com/adafruit/Adafruit_CircuitPython_SSD1681.git"
@@ -45,7 +51,7 @@
 
 
 # pylint: disable=too-few-public-methods
-class SSD1681(displayio.EPaperDisplay):
+class SSD1681(EPaperDisplay):
     r"""SSD1681 driver
 
     :param bus: The data bus the display is on
@@ -61,7 +67,7 @@ class SSD1681(displayio.EPaperDisplay):
           Display rotation
     """
 
-    def __init__(self, bus: displayio.FourWire, **kwargs) -> None:
+    def __init__(self, bus: FourWire, **kwargs) -> None:
         start_sequence = bytearray(_START_SEQUENCE)
 
         width = kwargs["width"]

examples/ssd1681_four_corners.py

@@ -13,10 +13,17 @@
 import board
 import busio
 import displayio
-import fourwire
 import terminalio
 import adafruit_ssd1681
 
+# 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
+
+
 displayio.release_displays()
 
 # This pinout works on a Feather RP2040 EPD and may need to be altered for other
@@ -28,7 +35,7 @@
 epd_reset = board.EPD_RESET
 epd_busy = board.EPD_BUSY
 
-display_bus = fourwire.FourWire(
+display_bus = FourWire(
     spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
 )
 display = adafruit_ssd1681.SSD1681(

examples/ssd1681_simpletest.py

@@ -12,9 +12,15 @@
 import time
 import board
 import displayio
-import fourwire
 import adafruit_ssd1681
 
+# 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
+
 displayio.release_displays()
 
 # This pinout works on a Feather M4 and may need to be altered for other boards.
@@ -24,7 +30,7 @@
 epd_reset = board.D5
 epd_busy = board.D6
 
-display_bus = fourwire.FourWire(
+display_bus = FourWire(
     spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
 )
 time.sleep(1)