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#![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::{Builder, msos};
use embassy_usb_dfu::consts::DfuAttributes;
use embassy_usb_dfu::{Control, ResetImmediate, usb_dfu};
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
}
|
