remove try/except, check for 'DISPLAY' in dir(board)

Author: BlitzCityDIY

CircuitPython_DVI_Hello_World/code.py

@@ -7,7 +7,6 @@
 import math
 from random import randint
 import time
-import supervisor
 import displayio
 import picodvi
 import board
@@ -23,35 +22,30 @@
 from adafruit_display_shapes.triangle import Triangle
 from adafruit_display_shapes.line import Line
 
-displayio.release_displays()
-
-# check for DVI Feather
-if 'CKP' in dir(board):
-    try:
-        fb = picodvi.Framebuffer(320, 240,
-            clk_dp=board.CKP, clk_dn=board.CKN,
-            red_dp=board.D0P, red_dn=board.D0N,
-            green_dp=board.D1P, green_dn=board.D1N,
-            blue_dp=board.D2P, blue_dn=board.D2N,
-            color_depth=8)
-    except MemoryError as e:
-        print("Error:\n", str(e))
-        time.sleep(5)
-        supervisor.reload()
+# check for DVI Feather with built-in display
+if 'DISPLAY' in dir(board):
+    display = board.DISPLAY
+
+# check for DVI feather without built-in display
+elif 'CKP' in dir(board):
+    displayio.release_displays()
+    fb = picodvi.Framebuffer(320, 240,
+        clk_dp=board.CKP, clk_dn=board.CKN,
+        red_dp=board.D0P, red_dn=board.D0N,
+        green_dp=board.D1P, green_dn=board.D1N,
+        blue_dp=board.D2P, blue_dn=board.D2N,
+        color_depth=8)
+    display = framebufferio.FramebufferDisplay(fb)
 # otherwise assume Pico
 else:
-    try:
-        fb = picodvi.Framebuffer(320, 240,
-            clk_dp=board.GP12, clk_dn=board.GP13,
-            red_dp=board.GP10, red_dn=board.GP11,
-            green_dp=board.GP8, green_dn=board.GP9,
-            blue_dp=board.GP6, blue_dn=board.GP7,
-            color_depth=8)
-    except MemoryError as e:
-        print("Error:\n", str(e))
-        time.sleep(5)
-        supervisor.reload()
-display = framebufferio.FramebufferDisplay(fb)
+    displayio.release_displays()
+    fb = picodvi.Framebuffer(320, 240,
+        clk_dp=board.GP12, clk_dn=board.GP13,
+        red_dp=board.GP10, red_dn=board.GP11,
+        green_dp=board.GP8, green_dn=board.GP9,
+        blue_dp=board.GP6, blue_dn=board.GP7,
+        color_depth=8)
+    display = framebufferio.FramebufferDisplay(fb)
 
 bitmap = displayio.Bitmap(display.width, display.height, 3)