continued to break out keys and pins

boot.py

@@ -1,13 +1,30 @@
+import busio
+import digitalio
 import usb_hid
+from hardware import io_extenders_pinout, pinout
+from adafruit_mcp230xx.mcp23017 import MCP23017
+import storage
+import usb_cdc
+
+io_extender_index, pin_number = pinout[0]
+address, scl, sda = io_extenders_pinout[io_extender_index]
+io_extender = MCP23017(busio.I2C(scl, sda), address)
+pin = io_extender.get_pin(pin_number)
+pin.direction = digitalio.Direction.INPUT
+pin.pull = digitalio.Pull.UP
+
+if pin.value:
+    storage.disable_usb_drive()
+    usb_cdc.disable()
 
 bitmap_keyboard = usb_hid.Device(
-    report_descriptor = (
-b'\x05\x01\t\x06\xa1\x01\x85\x04u\x01\x95\x08\x05\x07\x19\xe0)\xe7\x15\x00%\x01\x81\x02\x95\x05u\x01\x05\x08\x19\x01)\x05\x91\x02\x95\x01u\x03\x91\x03\x95xu\x01\x15\x00%\x01\x05\x07\x19\x00)w\x81\x02\xc0'),
-    report_ids = (4,),
-    in_report_lengths = (16,),
-    out_report_lengths = (1,),
-    usage_page = 0x1,
-    usage = 0x6,
+    report_descriptor=(
+        b'\x05\x01\t\x06\xa1\x01\x85\x04u\x01\x95\x08\x05\x07\x19\xe0)\xe7\x15\x00%\x01\x81\x02\x95\x05u\x01\x05\x08\x19\x01)\x05\x91\x02\x95\x01u\x03\x91\x03\x95xu\x01\x15\x00%\x01\x05\x07\x19\x00)w\x81\x02\xc0'),
+    report_ids=(4,),
+    in_report_lengths=(16,),
+    out_report_lengths=(1,),
+    usage_page=0x1,
+    usage=0x6,
 )
 print(bitmap_keyboard)
 devices = [
@@ -16,4 +33,4 @@ devices = [
     usb_hid.Device.MOUSE,
 ]
 usb_hid.enable(devices)
-print("enabled HID with custom keyboard device")
+print("enabled HID with custom keyboard device")