Merge branch 'master' into master

Author: ladyada

CLUE_Light_Painter/bmp2led.py

@@ -0,0 +1,21 @@
+"""
+Check for connection between pin and GND on hard boot (power-on or reset).
+If NO connection: storage is remounted as read/write so the light painter
+code can run (it requires temporary files), but code.py can't be edited.
+If connected: storage is left in read-only mode. Light painter code can't
+run but files are editable.
+"""
+
+# pylint: disable=import-error
+import board
+import digitalio
+import storage
+
+PIN = board.D0
+
+IO = digitalio.DigitalInOut(PIN)
+IO.direction = digitalio.Direction.INPUT
+IO.pull = digitalio.Pull.UP
+
+if IO.value:                    # No connection
+    storage.remount('/', False) # Remount storage as read/write for painter