88 lines
3.4 KiB
Rust
88 lines
3.4 KiB
Rust
#![no_std]
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#![no_main]
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use core::cell::RefCell;
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#[cfg(feature = "defmt")]
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use defmt_rtt::*;
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use embassy_boot_stm32::{AlignedBuffer, BlockingFirmwareState, FirmwareUpdaterConfig};
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use embassy_executor::Spawner;
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use embassy_stm32::flash::{Flash, WRITE_SIZE};
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use embassy_stm32::rcc::WPAN_DEFAULT;
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use embassy_stm32::usb::{self, Driver};
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use embassy_stm32::{bind_interrupts, peripherals};
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use embassy_sync::blocking_mutex::Mutex;
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use embassy_time::Duration;
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use embassy_usb::{msos, Builder};
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use embassy_usb_dfu::consts::DfuAttributes;
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use embassy_usb_dfu::{usb_dfu, Control, ResetImmediate};
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use panic_reset as _;
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bind_interrupts!(struct Irqs {
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USB_LP => usb::InterruptHandler<peripherals::USB>;
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});
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// This is a randomly generated GUID to allow clients on Windows to find your device.
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//
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// N.B. update to a custom GUID for your own device!
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const DEVICE_INTERFACE_GUIDS: &[&str] = &["{EAA9A5DC-30BA-44BC-9232-606CDC875321}"];
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let mut config = embassy_stm32::Config::default();
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config.rcc = WPAN_DEFAULT;
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let p = embassy_stm32::init(config);
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let flash = Flash::new_blocking(p.FLASH);
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let flash = Mutex::new(RefCell::new(flash));
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let config = FirmwareUpdaterConfig::from_linkerfile_blocking(&flash, &flash);
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let mut magic = AlignedBuffer([0; WRITE_SIZE]);
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let mut firmware_state = BlockingFirmwareState::from_config(config, &mut magic.0);
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firmware_state.mark_booted().expect("Failed to mark booted");
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let driver = Driver::new(p.USB, Irqs, p.PA12, p.PA11);
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let mut config = embassy_usb::Config::new(0xc0de, 0xcafe);
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config.manufacturer = Some("Embassy");
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config.product = Some("USB-DFU Runtime example");
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config.serial_number = Some("1235678");
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let mut config_descriptor = [0; 256];
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let mut bos_descriptor = [0; 256];
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let mut control_buf = [0; 64];
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let mut state = Control::new(firmware_state, DfuAttributes::CAN_DOWNLOAD, ResetImmediate);
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let mut builder = Builder::new(
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driver,
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config,
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&mut config_descriptor,
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&mut bos_descriptor,
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&mut [],
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&mut control_buf,
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);
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// We add MSOS headers so that the device automatically gets assigned the WinUSB driver on Windows.
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// Otherwise users need to do this manually using a tool like Zadig.
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//
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// It seems these always need to be at added at the device level for this to work and for
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// composite devices they also need to be added on the function level (as shown later).
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//
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builder.msos_descriptor(msos::windows_version::WIN8_1, 2);
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builder.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
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builder.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
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"DeviceInterfaceGUIDs",
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msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
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));
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usb_dfu(&mut builder, &mut state, Duration::from_millis(2500), |func| {
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// You likely don't have to add these function level headers if your USB device is not composite
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// (i.e. if your device does not expose another interface in addition to DFU)
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func.msos_feature(msos::CompatibleIdFeatureDescriptor::new("WINUSB", ""));
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func.msos_feature(msos::RegistryPropertyFeatureDescriptor::new(
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"DeviceInterfaceGUIDs",
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msos::PropertyData::RegMultiSz(DEVICE_INTERFACE_GUIDS),
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));
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});
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let mut dev = builder.build();
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dev.run().await
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}
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