Merge pull request #11 from prcutler/main

Update with root_group and fourwire for CP 9 compatibility

Author: dhalbert

README.rst

@@ -100,6 +100,7 @@ Usage Example
     import time
     import board
     import displayio
+    import fourwire
     import adafruit_uc8151d
 
     displayio.release_displays()
@@ -111,7 +112,7 @@ Usage Example
     epd_reset = board.D5
     epd_busy = None
 
-    display_bus = displayio.FourWire(
+    display_bus = fourwire.FourWire(
         spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
     )
     time.sleep(1)
@@ -127,7 +128,7 @@ Usage Example
         t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
         g.append(t)
 
-        display.show(g)
+        display.root_group = g
 
         display.refresh()
 

examples/uc8151d_1.54_grayscale.py

@@ -13,6 +13,7 @@
 import board
 import displayio
 import busio
+import fourwire
 import adafruit_uc8151d
 
 displayio.release_displays()
@@ -25,7 +26,7 @@
 rst = board.GP12
 busy = board.GP13
 
-display_bus = displayio.FourWire(
+display_bus = fourwire.FourWire(
     busio.SPI(clk, si), command=dc, chip_select=cs, reset=rst, baudrate=1000000
 )
 
@@ -64,5 +65,5 @@
 g = displayio.Group()
 t = displayio.TileGrid(bitmap, pixel_shader=palette)
 g.append(t)
-display.show(g)
+display.root_group = g
 display.refresh()

examples/uc8151d_2.9_color.py

@@ -10,6 +10,7 @@
 import time
 import board
 import displayio
+import fourwire
 import adafruit_uc8151d
 
 # Used to ensure the display is free in CircuitPython
@@ -24,7 +25,7 @@
 epd_busy = board.D6
 
 # Create the displayio connection to the display pins
-display_bus = displayio.FourWire(
+display_bus = fourwire.FourWire(
     spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
 )
 time.sleep(1)  # Wait a bit
@@ -55,7 +56,7 @@
     g.append(t)
 
     # Place the display group on the screen
-    display.show(g)
+    display.root_group = g
 
     # Refresh the display to have it actually show the image
     # NOTE: Do not refresh eInk displays sooner than 180 seconds

examples/uc8151d_simpletest.py

@@ -14,6 +14,7 @@
 import time
 import board
 import displayio
+import fourwire
 import adafruit_uc8151d
 
 displayio.release_displays()
@@ -25,7 +26,7 @@
 epd_reset = board.D5
 epd_busy = None
 
-display_bus = displayio.FourWire(
+display_bus = fourwire.FourWire(
     spi, command=epd_dc, chip_select=epd_cs, reset=epd_reset, baudrate=1000000
 )
 time.sleep(1)
@@ -41,7 +42,7 @@
     t = displayio.TileGrid(pic, pixel_shader=pic.pixel_shader)
     g.append(t)
 
-    display.show(g)
+    display.root_group = g
 
     display.refresh()