5 files changed, 154 insertions, 2 deletions

diff --git a/examples/rp/src/bin/usb_ethernet.rs b/examples/rp/src/bin/usb_ethernet.rs
index 6c2f27acf..aea9e6481 100644
--- a/examples/rp/src/bin/usb_ethernet.rs
+++ b/examples/rp/src/bin/usb_ethernet.rs
@@ -71,6 +71,7 @@ async fn main(spawner: Spawner) {
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
         &mut make_static!([0; 256])[..],
+        &mut make_static!([0; 0])[..],
         &mut make_static!([0; 128])[..],
     );
 
diff --git a/examples/rp/src/bin/usb_hid_keyboard.rs b/examples/rp/src/bin/usb_hid_keyboard.rs
index cc2090d22..569c9b12b 100644
--- a/examples/rp/src/bin/usb_hid_keyboard.rs
+++ b/examples/rp/src/bin/usb_hid_keyboard.rs
@@ -41,7 +41,7 @@ async fn main(_spawner: Spawner) {
     let mut config_descriptor = [0; 256];
     let mut bos_descriptor = [0; 256];
     // You can also add a Microsoft OS descriptor.
-    // let mut msos_descriptor = [0; 256];
+    let mut msos_descriptor = [0; 256];
     let mut control_buf = [0; 64];
     let request_handler = MyRequestHandler {};
     let mut device_handler = MyDeviceHandler::new();
@@ -54,7 +54,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
-        // &mut msos_descriptor,
+        &mut msos_descriptor,
         &mut control_buf,
     );
 
diff --git a/examples/rp/src/bin/usb_midi.rs b/examples/rp/src/bin/usb_midi.rs
index f0b03c81b..3ba34c806 100644
--- a/examples/rp/src/bin/usb_midi.rs
+++ b/examples/rp/src/bin/usb_midi.rs
@@ -58,6 +58,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [],
         &mut control_buf,
     );
 
diff --git a/examples/rp/src/bin/usb_raw.rs b/examples/rp/src/bin/usb_raw.rs
new file mode 100644
index 000000000..e0e5daa54
--- /dev/null
+++ b/examples/rp/src/bin/usb_raw.rs
@@ -0,0 +1,149 @@
+//! This example shows how to use USB (Universal Serial Bus) in the RP2040 chip.
+//!
+//! This creates a USB serial port that echos.
+
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_rp::bind_interrupts;
+use embassy_rp::peripherals::USB;
+use embassy_rp::usb::{Driver, InterruptHandler};
+use embassy_usb::control::{InResponse, OutResponse, Recipient, Request, RequestType};
+use embassy_usb::msos::{self, windows_version};
+use embassy_usb::types::InterfaceNumber;
+use embassy_usb::{Builder, Config, Handler};
+use {defmt_rtt as _, panic_probe as _};
+
+// This is a randomly generated GUID to allow clients on Windows to find our device
+const DEVICE_INTERFACE_GUIDS: &[&str] = &["{AFB9A6FB-30BA-44BC-9232-806CFC875321}"];
+
+bind_interrupts!(struct Irqs {
+    USBCTRL_IRQ => InterruptHandler<USB>;
+});
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    info!("Hello there!");
+
+    let p = embassy_rp::init(Default::default());
+
+    // Create the driver, from the HAL.
+    let driver = Driver::new(p.USB, Irqs);
+
+    // Create embassy-usb Config
+    let mut config = Config::new(0xc0de, 0xcafe);
+    config.manufacturer = Some("Embassy");
+    config.product = Some("USB raw example");
+    config.serial_number = Some("12345678");
+    config.max_power = 100;
+    config.max_packet_size_0 = 64;
+
+    // // Required for windows compatibility.
+    // // https://developer.nordicsemi.com/nRF_Connect_SDK/doc/1.9.1/kconfig/CONFIG_CDC_ACM_IAD.html#help
+    config.device_class = 0xEF;
+    config.device_sub_class = 0x02;
+    config.device_protocol = 0x01;
+    config.composite_with_iads = true;
+
+    // Create embassy-usb DeviceBuilder using the driver and config.
+    // It needs some buffers for building the descriptors.
+    let mut device_descriptor = [0; 256];
+    let mut config_descriptor = [0; 256];
+    let mut bos_descriptor = [0; 256];
+    let mut msos_descriptor = [0; 256];
+    let mut control_buf = [0; 64];
+
+    let mut handler = ControlHandler {
+        if_num: InterfaceNumber(0),
+    };
+
+    let mut builder = Builder::new(
+        driver,
+        config,
+        &mut device_descriptor,
+        &mut config_descriptor,
+        &mut bos_descriptor,
+        &mut msos_descriptor,
+        &mut control_buf,
+    );
+
+    builder.msos_descriptor(windows_version::WIN8_1, 0);
+    builder.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
+    builder.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
+        "DeviceInterfaceGUIDs",
+        msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
+    ));
+
+    // Add a vendor-specific function (class 0xFF), and corresponding interface,
+    // that uses our custom handler.
+    let mut function = builder.function(0xFF, 0, 0);
+    let mut interface = function.interface();
+    let _alt = interface.alt_setting(0xFF, 0, 0, None);
+    handler.if_num = interface.interface_number();
+    drop(function);
+    builder.handler(&mut handler);
+
+    // Build the builder.
+    let mut usb = builder.build();
+
+    // Run the USB device.
+    usb.run().await;
+}
+
+/// Handle CONTROL endpoint requests and responses. For many simple requests and responses
+/// you can get away with only using the control endpoint.
+struct ControlHandler {
+    if_num: InterfaceNumber,
+}
+
+impl Handler for ControlHandler {
+    /// Respond to HostToDevice control messages, where the host sends us a command and
+    /// optionally some data, and we can only acknowledge or reject it.
+    fn control_out<'a>(&'a mut self, req: Request, buf: &'a [u8]) -> Option<OutResponse> {
+        // Log the request before filtering to help with debugging.
+        info!("Got control_out, request={}, buf={:a}", req, buf);
+
+        // Only handle Vendor request types to an Interface.
+        if req.request_type != RequestType::Vendor || req.recipient != Recipient::Interface {
+            return None;
+        }
+
+        // Ignore requests to other interfaces.
+        if req.index != self.if_num.0 as u16 {
+            return None;
+        }
+
+        // Accept request 100, value 200, reject others.
+        if req.request == 100 && req.value == 200 {
+            Some(OutResponse::Accepted)
+        } else {
+            Some(OutResponse::Rejected)
+        }
+    }
+
+    /// Respond to DeviceToHost control messages, where the host requests some data from us.
+    fn control_in<'a>(&'a mut self, req: Request, buf: &'a mut [u8]) -> Option<InResponse<'a>> {
+        info!("Got control_in, request={}", req);
+
+        // Only handle Vendor request types to an Interface.
+        if req.request_type != RequestType::Vendor || req.recipient != Recipient::Interface {
+            return None;
+        }
+
+        // Ignore requests to other interfaces.
+        if req.index != self.if_num.0 as u16 {
+            return None;
+        }
+
+        // Respond "hello" to request 101, value 201, when asked for 5 bytes, otherwise reject.
+        if req.request == 101 && req.value == 201 && req.length == 5 {
+            buf[..5].copy_from_slice(b"hello");
+            Some(InResponse::Accepted(&buf[..5]))
+        } else {
+            Some(InResponse::Rejected)
+        }
+    }
+}
diff --git a/examples/rp/src/bin/usb_serial.rs b/examples/rp/src/bin/usb_serial.rs
index 164e2052d..0d0317cda 100644
--- a/examples/rp/src/bin/usb_serial.rs
+++ b/examples/rp/src/bin/usb_serial.rs
@@ -60,6 +60,7 @@ async fn main(_spawner: Spawner) {
         &mut device_descriptor,
         &mut config_descriptor,
         &mut bos_descriptor,
+        &mut [],
         &mut control_buf,
     );