Added unsafe_boot.py

Author: cogliano

PyPortal_CMA_Art_Frame/unsafe_boot.py

@@ -0,0 +1,24 @@
+import time
+import digitalio
+import storage
+import board
+
+# Either of these should work for the PyPortal
+switch = digitalio.DigitalInOut(board.D4) # upper port
+#switch = digitalio.DigitalInOut(board.D3) # lower port
+
+switch.direction = digitalio.Direction.INPUT
+switch.pull = digitalio.Pull.UP
+
+# If the switch pin is connected to ground CircuitPython can write to the drive
+# Use a female/female jumper wire to connect the outer pins in the D4 connecter
+
+storage.remount("/", disable_concurrent_write_protection= not switch.value)
+if switch.value:
+    print("File system is read-only, insert jumper in data port between")
+    print("pins 1 and 3 to make it writeable.")
+else:
+    print("File system is writable, remove jumper in data port to make")
+    print("it read-only and available to CircuitPython.")
+
+time.sleep(5)