Added example for ESP32-S3

Author: sourcebox

examples/example-esp32s3/.cargo/config.toml

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+[target.xtensa-esp32s3-none-elf]
+runner = "espflash flash --monitor"
+
+[build]
+rustflags = ["-C", "link-arg=-nostartfiles", "-C", "link-arg=-Wl,-Tlinkall.x"]
+target = "xtensa-esp32s3-none-elf"
+
+[unstable]
+build-std = ["core", "alloc"]

examples/example-esp32s3/.gitignore

@@ -0,0 +1,2 @@
+/target
+/.vscode

examples/example-esp32s3/Cargo.toml

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+[package]
+name = "example-esp32s3"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]
+esp-hal = { version = "0.22", features = ["esp32s3"] }
+esp-backtrace = { version = "0.14.2", features = [
+    "esp32s3",
+    "panic-handler",
+    "println",
+] }
+esp-println = { version = "0.12.0", features = ["esp32s3", "log"] }
+usb-device = { version = "0.3.2", features = ["control-buffer-256"] }
+usbd-midi = { path = "../../" }

examples/example-esp32s3/rust-toolchain.toml

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+[toolchain]
+channel = "esp"

examples/example-esp32s3/src/main.rs

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+//! Example for ESP32-S3.
+
+#![no_std]
+#![no_main]
+
+use core::ptr::addr_of_mut;
+
+use esp_backtrace as _;
+use esp_println::println;
+use usb_device::prelude::*;
+use usbd_midi::{
+    data::usb_midi::midi_packet_reader::MidiPacketBufferReader, midi_device::MidiClass,
+};
+
+static mut EP_MEMORY: [u32; 1024] = [0; 1024];
+
+#[esp_hal::xtensa_lx_rt::entry]
+fn main() -> ! {
+    let mut config = esp_hal::Config::default();
+    config.cpu_clock = esp_hal::clock::CpuClock::Clock240MHz;
+    let peripherals = esp_hal::init(config);
+
+    let usb_bus_allocator = esp_hal::otg_fs::UsbBus::new(
+        esp_hal::otg_fs::Usb::new(peripherals.USB0, peripherals.GPIO20, peripherals.GPIO19),
+        unsafe { &mut *addr_of_mut!(EP_MEMORY) },
+    );
+
+    let mut midi_class = MidiClass::new(&usb_bus_allocator, 1, 1).unwrap();
+
+    let mut usb_dev = UsbDeviceBuilder::new(&usb_bus_allocator, UsbVidPid(0x16c0, 0x5e4))
+        .device_class(0)
+        .device_sub_class(0)
+        .strings(&[StringDescriptors::default()
+            .manufacturer("Music Company")
+            .product("MIDI Device")
+            .serial_number("12345678")])
+        .unwrap()
+        .build();
+
+    loop {
+        if usb_dev.poll(&mut [&mut midi_class]) {
+            let mut buffer = [0; 64];
+            if let Ok(size) = midi_class.read(&mut buffer) {
+                let buffer_reader = MidiPacketBufferReader::new(&buffer, size);
+                for packet in buffer_reader.into_iter() {
+                    if let Ok(packet) = packet {
+                        println!("{:?}", packet);
+                    }
+                }
+            }
+        }
+    }
+}