From f430c0e8c2e9703220978d9976b058ecf0117c45 Mon Sep 17 00:00:00 2001
From: Jacob Rosenthal <jacobrosenthal@gmail.com>
Date: Sun, 12 Dec 2021 17:13:37 -0700
Subject: nrf-usbd

---
 examples/nrf/Cargo.toml          |  5 +++
 examples/nrf/src/bin/usb_uart.rs | 94 ++++++++++++++++++++++++++++++++++++++++
 2 files changed, 99 insertions(+)
 create mode 100644 examples/nrf/src/bin/usb_uart.rs

(limited to 'examples')

diff --git a/examples/nrf/Cargo.toml b/examples/nrf/Cargo.toml
index 5c58541a6..646ba496f 100644
--- a/examples/nrf/Cargo.toml
+++ b/examples/nrf/Cargo.toml
@@ -9,6 +9,7 @@ version = "0.1.0"
 embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt"] }
 embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] }
 embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote"] }
+embassy-hal-common = { version = "0.1.0", path = "../../embassy-hal-common" }
 
 defmt = "0.3"
 defmt-rtt = "0.3"
@@ -20,3 +21,7 @@ panic-probe = { version = "0.3", features = ["print-defmt"] }
 futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
 rand = { version = "0.8.4", default-features = false }
 embedded-storage = "0.2.0"
+
+usb-device = "0.2"
+usbd-serial = "0.1.1"
+nrf-usbd = "0.1.0"
diff --git a/examples/nrf/src/bin/usb_uart.rs b/examples/nrf/src/bin/usb_uart.rs
new file mode 100644
index 000000000..b81fd5ee8
--- /dev/null
+++ b/examples/nrf/src/bin/usb_uart.rs
@@ -0,0 +1,94 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+#[path = "../example_common.rs"]
+mod example_common;
+
+use defmt::{info, unwrap};
+use defmt_rtt as _;
+use embassy::interrupt::InterruptExt;
+use futures::future::{select, Either};
+use futures::pin_mut;
+// global logger
+use panic_probe as _; // print out panic messages
+
+use embassy::executor::Spawner;
+use embassy::io::{AsyncBufReadExt, AsyncWriteExt};
+use embassy::time::{Duration, Timer};
+use embassy_hal_common::usb::{State, Usb, UsbSerial};
+use embassy_nrf::UsbBus;
+use embassy_nrf::{interrupt, Peripherals};
+use usb_device::device::{UsbDeviceBuilder, UsbVidPid};
+
+#[embassy::main]
+async fn main(_spawner: Spawner, _p: Peripherals) {
+    let mut tx_buffer = [0u8; 1024];
+    let mut rx_buffer = [0u8; 640];
+
+    let usb_bus = UsbBus::new();
+
+    let serial = UsbSerial::new(&usb_bus, &mut rx_buffer, &mut tx_buffer);
+
+    let device = UsbDeviceBuilder::new(&usb_bus, UsbVidPid(0x16c0, 0x27dd))
+        .manufacturer("Fake company")
+        .product("Serial port")
+        .serial_number("TEST")
+        .device_class(0x02)
+        .build();
+
+    let irq = interrupt::take!(USBD);
+    irq.set_priority(interrupt::Priority::P3);
+
+    let mut state = State::new();
+
+    let usb = unsafe { Usb::new(&mut state, device, serial, irq) };
+    pin_mut!(usb);
+    // usb.start();
+
+    let (mut read_interface, mut write_interface) = usb.as_ref().take_serial_0();
+
+    unwrap!(write_interface.write_all(b"\r\nSend something\r\n").await);
+
+    info!("usb initialized!");
+
+    let mut buf = [0u8; 64];
+    loop {
+        let mut n = 0;
+        let left = {
+            let recv_fut = async {
+                loop {
+                    let byte = unwrap!(read_interface.read_byte().await);
+                    unwrap!(write_interface.write_byte(byte).await);
+                    buf[n] = byte;
+
+                    n += 1;
+                    if byte == b'\n' || byte == b'\r' || n == buf.len() {
+                        break;
+                    }
+                }
+            };
+            pin_mut!(recv_fut);
+
+            let timeout = Timer::after(Duration::from_ticks(32768 * 10));
+
+            match select(recv_fut, timeout).await {
+                Either::Left(_) => true,
+                Either::Right(_) => false,
+            }
+        };
+
+        if left {
+            for c in buf[..n].iter_mut() {
+                if 0x61 <= *c && *c <= 0x7a {
+                    *c &= !0x20;
+                }
+            }
+            unwrap!(write_interface.write_byte(b'\n').await);
+            unwrap!(write_interface.write_all(&buf[..n]).await);
+            unwrap!(write_interface.write_byte(b'\n').await);
+        } else {
+            unwrap!(write_interface.write_all(b"\r\nSend something\r\n").await);
+        }
+    }
+}
-- 
cgit