120 lines
3.6 KiB
Rust
120 lines
3.6 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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#![feature(min_type_alias_impl_trait)]
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#![feature(impl_trait_in_bindings)]
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#[path = "../example_common.rs"]
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mod example_common;
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use example_common::*;
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use cortex_m_rt::entry;
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use defmt::panic;
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use embassy::executor::{Executor, Spawner};
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use embassy::interrupt::InterruptExt;
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use embassy::io::{AsyncBufReadExt, AsyncWriteExt};
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use embassy::time::{Duration, Timer};
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use embassy::util::Forever;
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use embassy_extras::usb::usb_serial::UsbSerial;
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use embassy_extras::usb::Usb;
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use embassy_stm32::hal::otg_fs::{UsbBus, USB};
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use embassy_stm32::hal::prelude::*;
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use embassy_stm32::{interrupt, pac, rtc};
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use futures::future::{select, Either};
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use futures::pin_mut;
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use usb_device::bus::UsbBusAllocator;
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use usb_device::prelude::*;
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#[embassy::task]
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async fn run1(bus: &'static mut UsbBusAllocator<UsbBus<USB>>) {
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info!("Async task");
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let mut read_buf = [0u8; 128];
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let mut write_buf = [0u8; 128];
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let serial = UsbSerial::new(bus, &mut read_buf, &mut write_buf);
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let device = UsbDeviceBuilder::new(bus, UsbVidPid(0x16c0, 0x27dd))
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.manufacturer("Fake company")
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.product("Serial port")
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.serial_number("TEST")
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.device_class(0x02)
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.build();
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let irq = interrupt::take!(OTG_FS);
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irq.set_priority(interrupt::Priority::P3);
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let usb = Usb::new(device, serial, irq);
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pin_mut!(usb);
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usb.as_mut().start();
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let (mut read_interface, mut write_interface) = usb.as_ref().take_serial_0();
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let mut buf = [0u8; 64];
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loop {
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let mut n = 0;
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let left = {
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let recv_fut = async {
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loop {
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let byte = unwrap!(read_interface.read_byte().await);
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unwrap!(write_interface.write_byte(byte).await);
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buf[n] = byte;
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n += 1;
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if byte == b'\n' || byte == b'\r' || n == buf.len() {
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break;
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}
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}
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};
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pin_mut!(recv_fut);
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let timeout = Timer::after(Duration::from_ticks(32768 * 10));
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match select(recv_fut, timeout).await {
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Either::Left(_) => true,
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Either::Right(_) => false,
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}
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};
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if left {
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for c in buf[..n].iter_mut() {
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if 0x61 <= *c && *c <= 0x7a {
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*c &= !0x20;
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}
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}
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unwrap!(write_interface.write_byte(b'\n').await);
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unwrap!(write_interface.write_all(&buf[..n]).await);
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unwrap!(write_interface.write_byte(b'\n').await);
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} else {
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unwrap!(write_interface.write_all(b"\r\nSend something\r\n").await);
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}
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}
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}
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static USB_BUS: Forever<UsbBusAllocator<UsbBus<USB>>> = Forever::new();
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#[embassy::main(
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config = "embassy_stm32::system::Config::new().use_hse(25).sysclk(48).require_pll48clk()"
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)]
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async fn main(spawner: Spawner) -> ! {
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static mut EP_MEMORY: [u32; 1024] = [0; 1024];
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info!("Hello World!");
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let (p, clocks) = embassy_stm32::Peripherals::take().unwrap();
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let gpioa = p.GPIOA.split();
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let usb = USB {
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usb_global: p.OTG_FS_GLOBAL,
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usb_device: p.OTG_FS_DEVICE,
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usb_pwrclk: p.OTG_FS_PWRCLK,
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pin_dm: gpioa.pa11.into_alternate_af10(),
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pin_dp: gpioa.pa12.into_alternate_af10(),
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hclk: clocks.hclk(),
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};
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// Rust analyzer isn't recognizing the static ref magic `cortex-m` does
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#[allow(unused_unsafe)]
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let usb_bus = USB_BUS.put(UsbBus::new(usb, unsafe { &mut EP_MEMORY }));
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spawner.spawn(run1(usb_bus)).unwrap();
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}
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