fix USB descriptor interface count

README.md

@@ -1,8 +1,8 @@
 # Pico BLE HID
 
-This project uses a Raspberry Pi Pico W as a Bluetooth Low Energy adapter for
+This project uses a Raspberry Pi Pico W or Pico 2 W as a Bluetooth Low Energy
-a wired USB HID input peripheral, allowing it to connect to a host device
+adapter for a wired USB HID input peripheral, allowing it to connect to a host
-over BLE using HID over GATT Profile.
+device over BLE using HID over GATT Profile.
 
 
 ## Setup
@@ -12,7 +12,7 @@ over BLE using HID over GATT Profile.
 ### Hardware
 
 You will need the following hardware to make the device:
-- Raspberry Pi Pico W
+- Raspberry Pi Pico W or Raspberry Pi Pico 2 W
 - USB extension cable
 - (Optional) Momentary push button
 
@@ -20,19 +20,19 @@ You will need the following hardware to make the device:
 
 
 You will need to cut the USB extension in half and connect the wires from the
-female end to the Raspberry Pi Pico W. The default configuration is to attach
+female end to the Raspberry Pi Pico (2) W. The default configuration is to
-the USB's green wire to pin 1/GP0 and USB's white wire to pin 2/GP1. You will
+attach the USB's green wire to pin 1/GP0 and USB's white wire to pin 2/GP1. You
-also need to connect the red to 5V VBUS/VSYS (since you'll be powering from the
+will also need to connect the red to 5V VBUS/VSYS (since you'll be powering
-USB connection, VBUS should be fine) and the black to any ground pin. Pin 38
+from the USB connection, VBUS should be fine) and the black to any ground pin.
-is the closest and most convenient, or the ground test point TP1 on the back
+Pin 38 is the closest and most convenient, or the ground test point TP1 on the
-will also work. While you can connect the Raspberry Pi Pico to the host device
+back will also work. While you can connect the Raspberry Pi Pico (2) W to the
-using the micro USB port and a micro USB cable, since you have already
+host device using the micro USB port and a micro USB cable, since you have
-sacrificed half of the USB extension cable, you might as well use the male half
+already sacrificed half of the USB extension cable, you might as well use the 
-to create a standard USB-A connection.  If you wish to do so, then simply 
+male half to create a standard USB-A connection.  If you wish to do so, then
-connect the red and black wires of the male connector end to VBUS (5V) and GND,
+simply  connect the red and black wires of the male connector end to VBUS (5V)
-respectively. For the data wires, you can solder them to the two test points
+and GND, respectively. For the data wires, you can solder them to the two test 
-TP2 and TP3 on the back of the Raspberry Pi Pico. The white cable goes to TP2
+points TP2 and TP3 on the back of the Raspberry Pi Pico (2) W. The white cable
-and the green cable to TP3.
+goes to TP2 and the green cable to TP3.
 
 ![Wiring of USB connectors to Raspberry Pi Pico W](diagram.png)
 
@@ -43,29 +43,29 @@ relief is a good idea.
 
 ### Software
 
-Download the ble_hid.uf2 file from the latest
+Download the ble_hid-pico_w.uf2 (for Pico W) or ble_hid-pico2_w.uf2 (for Pico 2
-[release](https://git.kkozai.com/kenji/pico_ble_hid/releases) and flash
+W) file from the latest
-onto the Raspberry Pi Pico W by holding down the BOOTSEL button while plugging
+[release](https://git.kkozai.com/kenji/pico_ble_hid/releases) and flash onto
+the Raspberry Pi Pico (2) W by holding down the BOOTSEL button while plugging
 into your computer so that it appears as a USB drive, then transfer the
-firmware file onto the Pico W. After unmounting, the firmware install is
+firmware file onto the Pico (2) W. After unmounting, the firmware install is
 complete.
 
 ## Usage
 
-Connect the Raspberry Pi Pico W into any USB power source (a good, small power
+Connect the Raspberry Pi Pico (2) W into any USB power source (a good, small
-bank will work), then plug in the desired peripheral into the female USB
+power bank will work), then plug in the desired peripheral into the female USB
 socket. After about a second, the onboard LED will light up, indicating it is
 ready to be paired over Bluetooth LE.
 
 From the host machine, go to your Bluetooth settings and pair with the
 "Pico BLE HID" device. The LED should turn off when pairing begins, and it will
-turn back on when pairing is complete and the Raspberry Pi Pico W is
+turn back on when pairing is complete and the Raspberry Pi Pico (2) W is ready
-ready to receive inputs. This will take a few seconds, so be patient.
+to receive inputs. This will take a few seconds, so be patient. Once the light
-Once the light is back on, your device should work over the Bluetooth
+is back on, your device should work over the Bluetooth connection. When
-connection. When connecting a power-hungry device such as a gaming keyboard
+connecting a power-hungry device such as a gaming keyboard with many LEDs, the
-with many LEDs, the sudden power draw when plugging in can cause issues, so it
+sudden power draw when plugging in can cause issues, so it is recommended to
-is recommended to turn off the LEDs before connecting to the Raspberry Pi Pico
+turn off the LEDs before connecting to the Raspberry Pi Pico (2) W.
-W.
 
 If you connected a push button to GP5, then pressing the button will switch
 between Bluetooth connection mode and USB passthrough mode. In USB passthrough

usb_descriptors.c

@@ -65,7 +65,7 @@ uint8_t const * tud_descriptor_configuration_cb(uint8_t index)
 
 	if ( device_state == DEVICE_ACTIVE ) {
 		uint8_t desc_initial[TUD_CONFIG_DESC_LEN+TUD_CDC_DESC_LEN+1] = {
-			TUD_CONFIG_DESCRIPTOR(1, 4+num_mounted, 0, TUD_CONFIG_DESC_LEN+TUD_CDC_DESC_LEN+num_mounted*TUD_HID_DESC_LEN, 0x00, 100),
+			TUD_CONFIG_DESCRIPTOR(1, 2+num_mounted, 0, TUD_CONFIG_DESC_LEN+TUD_CDC_DESC_LEN+num_mounted*TUD_HID_DESC_LEN, 0x00, 100),
 			TUD_CDC_DESCRIPTOR(ITF_NUM_CDC, 4, EPNUM_CDC_NOTIF, 8, EPNUM_CDC_OUT, EPNUM_CDC_IN, 64),
 		};
 		memcpy(desc_configuration, desc_initial, TUD_CONFIG_DESC_LEN+TUD_CDC_DESC_LEN);