Error handling

Author: thirdr

micropython/examples/inky_frame/display_png.py

@@ -5,6 +5,7 @@
 
 # Create a PicoGraphics instance
 graphics = PicoGraphics(DISPLAY)
+WIDTH, HEIGHT = graphics.get_bounds()
 
 # Set the font
 graphics.set_font("bitmap8")
@@ -19,14 +20,18 @@
 
 # Few lines of text.
 graphics.text("Display PNG Image...", 10, 40, 300, 3)
-graphics.text("Success!", 10, 70, 300, 3)
 
 # Open our PNG File from flash. In this example we're using a green check mark.
 # You can use Thonny to transfer PNG Images to your Inky Frame.
-png.open_file("success.png")
+try:
+    png.open_file("success.png")
 
-# Decode our PNG file and set the X and Y
-png.decode(130, 70)
+    # Decode our PNG file and set the X and Y
+    png.decode(130, 70)
+
+    graphics.text("Success!", 10, 70, WIDTH, 3)
+except OSError:
+    graphics.text("Unable to find PNG file! Copy 'success.png' to your Inky Frame using Thonny :)", 10, 70, WIDTH, 3)
 
 # Start the screen update
 graphics.update()