STM32WBA usb-dfu example

- Added sample application
- Added sample bootloader

Removed trace import

1 files changed, 114 insertions, 0 deletions

diff --git a/examples/boot/application/stm32wba-dfu/src/main.rs b/examples/boot/application/stm32wba-dfu/src/main.rs
new file mode 100644
index 000000000..bf17a7150
--- /dev/null
+++ b/examples/boot/application/stm32wba-dfu/src/main.rs
@@ -0,0 +1,114 @@
+#![no_std]
+#![no_main]
+
+use core::cell::RefCell;
+
+#[cfg(feature = "defmt")]
+use defmt_rtt as _;
+use embassy_boot_stm32::{AlignedBuffer, BlockingFirmwareState, FirmwareUpdaterConfig};
+use embassy_executor::Spawner;
+use embassy_stm32::flash::{Flash, WRITE_SIZE};
+use embassy_stm32::usb::{self, Driver};
+use embassy_stm32::{bind_interrupts, peripherals};
+use embassy_sync::blocking_mutex::Mutex;
+use embassy_time::Duration;
+use embassy_usb::{msos, Builder};
+use embassy_usb_dfu::consts::DfuAttributes;
+use embassy_usb_dfu::{usb_dfu, Control, ResetImmediate};
+use panic_reset as _;
+
+bind_interrupts!(struct Irqs {
+    USB_OTG_HS => usb::InterruptHandler<peripherals::USB_OTG_HS>;
+});
+
+// This is a randomly generated GUID to allow clients on Windows to find your device.
+//
+// N.B. update to a custom GUID for your own device!
+const DEVICE_INTERFACE_GUIDS: &[&str] = &["{EAA9A5DC-30BA-44BC-9232-606CDC875321}"];
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+
+    {
+        use embassy_stm32::rcc::*;
+        config.rcc.pll1 = Some(Pll {
+            source: PllSource::HSI,
+            prediv: PllPreDiv::DIV1,   // PLLM = 1 → HSI / 1 = 16 MHz
+            mul: PllMul::MUL30,        // PLLN = 30 → 16 MHz * 30 = 480 MHz VCO
+            divr: Some(PllDiv::DIV5),  // PLLR = 5 → 96 MHz (Sysclk)
+            divq: Some(PllDiv::DIV10), // PLLQ = 10 → 48 MHz
+            divp: Some(PllDiv::DIV30), // PLLP = 30 → 16 MHz (USB_OTG_HS)
+            frac: Some(0),             // Fractional part (disabled)
+        });
+
+        config.rcc.ahb_pre = AHBPrescaler::DIV1;
+        config.rcc.apb1_pre = APBPrescaler::DIV1;
+        config.rcc.apb2_pre = APBPrescaler::DIV1;
+        config.rcc.apb7_pre = APBPrescaler::DIV1;
+        config.rcc.ahb5_pre = AHB5Prescaler::DIV4;
+
+        config.rcc.voltage_scale = VoltageScale::RANGE1;
+        config.rcc.mux.otghssel = mux::Otghssel::PLL1_P;
+        config.rcc.sys = Sysclk::PLL1_R;
+    }
+
+    let p = embassy_stm32::init(config);
+    let flash = Flash::new_blocking(p.FLASH);
+    let flash = Mutex::new(RefCell::new(flash));
+
+    let config = FirmwareUpdaterConfig::from_linkerfile_blocking(&flash, &flash);
+    let mut magic = AlignedBuffer([0; WRITE_SIZE]);
+    let mut firmware_state = BlockingFirmwareState::from_config(config, &mut magic.0);
+    firmware_state.mark_booted().expect("Failed to mark booted");
+
+    // Create the driver, from the HAL.
+    let mut ep_out_buffer = [0u8; 256];
+    let mut config = embassy_stm32::usb::Config::default();
+    config.vbus_detection = false;
+
+    let driver = Driver::new_hs(p.USB_OTG_HS, Irqs, p.PD6, p.PD7, &mut ep_out_buffer, config);
+    let mut config = embassy_usb::Config::new(0xc0de, 0xcafe);
+    config.manufacturer = Some("Embassy");
+    config.product = Some("USB-DFU Runtime example");
+    config.serial_number = Some("1235678");
+
+    let mut config_descriptor = [0; 256];
+    let mut bos_descriptor = [0; 256];
+    let mut control_buf = [0; 64];
+    let mut state = Control::new(firmware_state, DfuAttributes::CAN_DOWNLOAD, ResetImmediate);
+    let mut builder = Builder::new(
+        driver,
+        config,
+        &mut config_descriptor,
+        &mut bos_descriptor,
+        &mut [],
+        &mut control_buf,
+    );
+
+    // We add MSOS headers so that the device automatically gets assigned the WinUSB driver on Windows.
+    // Otherwise users need to do this manually using a tool like Zadig.
+    //
+    // It seems these always need to be at added at the device level for this to work and for
+    // composite devices they also need to be added on the function level (as shown later).
+
+    builder.msos_descriptor(msos::windows_version::WIN8_1, 2);
+    builder.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
+    builder.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
+        "DeviceInterfaceGUIDs",
+        msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
+    ));
+
+    usb_dfu(&mut builder, &mut state, Duration::from_millis(1000), |func| {
+        // You likely don't have to add these function level headers if your USB device is not composite
+        // (i.e. if your device does not expose another interface in addition to DFU)
+        func.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
+        func.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
+            "DeviceInterfaceGUIDs",
+            msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
+        ));
+    });
+
+    let mut dev = builder.build();
+    dev.run().await
+}