--- /dev/null
+"""Pin definitions for the Feather RP2040 with u2if firmware."""
+
+"""
+Adafruit CircuitPython 6.2.0 on 2021-04-05; Adafruit Feather RP2040 with rp2040
+>>> import board
+>>> board.
+A0 A1 A2 A3
+D0 D1 D10 D11
+D12 D13 D24 D25
+D4 D5 D6 D9
+I2C LED MISO MOSI
+NEOPIXEL RX SCK SCL
+SDA SPI TX UART
+"""
+
+from adafruit_blinka.microcontroller.rp2040_u2if import pin
+
+D0 = pin.GP0
+D1 = pin.GP1
+D4 = pin.GP6
+D5 = pin.GP7
+D6 = pin.GP8
+D9 = pin.GP9
+D10 = pin.GP10
+D11 = pin.GP11
+D12 = pin.GP12
+D13 = pin.GP13
+D24 = pin.GP24
+D25 = pin.GP25
+
+A0 = pin.GP26
+A1 = pin.GP27
+A2 = pin.GP28
+#A3 = pin.GP29 # not currently supported in firmware
+
+SCL = pin.GP3
+SDA = pin.GP2
+
+SCLK = SCK = pin.GP18
+MOSI = pin.GP19
+MISO = pin.GP20
+
+# access u2if via pin instance to open for specifc VID/PID
+pin.GP0._u2if_open_hid(0x239A, 0x80F2)