vklachkov
commented
2 years ago My code is based on example...
static mut EP_MEMORY: [u32; 1024] = [0; 1024];
#[entry]
fn main() -> ! {
rtt_init_print!();
rprintln!("Hello!");
let dp = pac::Peripherals::take().unwrap();
let rcc = dp.RCC.constrain();
let clocks = rcc
.cfgr
.use_hse(25.mhz())
.sysclk(48.mhz())
.require_pll48clk()
.freeze();
let gpioa = dp.GPIOA.split();
let usb = USB {
usb_global: dp.OTG_FS_GLOBAL,
usb_device: dp.OTG_FS_DEVICE,
usb_pwrclk: dp.OTG_FS_PWRCLK,
pin_dm: gpioa.pa11.into_alternate(),
pin_dp: gpioa.pa12.into_alternate(),
hclk: clocks.hclk(),
};
let mut usb_bus = UsbBus::new(usb, unsafe { &mut EP_MEMORY });
let mut serial = SerialPort::new(&usb_bus);
let mut usb_dev = UsbDeviceBuilder::new(&usb_bus, UsbVidPid(0x16c0, 0x27dd))
.product("Serial port")
.device_class(USB_CLASS_CDC)
.build();
loop {
if !usb_dev.poll(&mut [&mut serial]) {
continue;
}
let mut buf = [0u8; 64];
match serial.read(&mut buf[..]) {
Ok(count) => {}
Err(UsbError::WouldBlock) => {}
Err(err) => {}
};
match serial.write(&[0x3a, 0x29]) {
Ok(count) => {}
Err(UsbError::WouldBlock) => {}
Err(err) => {}
};
}
}
mvirkkunen
Disasm
Hi!
I used your library in my project for STM32F411CEU and noticed that sometimes Windows shows error 43 in Device Manager. If reconnect device, then everything works as it should
To reproduce the issue, I plugged and popped the device several times. Sometimes it also occurred if leave the stm32 connected via USB and flash using st-link