Thmyl Brnamj | Usbutil V2.2

async fn async_bulk_read(dev: &UsbDevice) -> TransferResult let mut buf = vec![0u8; 1024]; dev.bulk_read_async(0x82, &mut buf).await

/* Perform a bulk read on endpoint 0x81 */ rc = usbutil_bulk_read(dev, 0x81, buffer, sizeof(buffer), 5000); if (rc > 0) printf("Read %d bytes\n", rc); else fprintf(stderr, "Bulk read failed: %s\n", usbutil_strerror(rc));

All packages ship pre‑compiled binaries for the most common architectures (x86_64, ARM64, ARMv7). 6.1 C/C++ (Bulk Transfer) #include "usbutil.h" #include <stdio.h>

import usbutil

def device_arrived(dev): print(f"Device arrived: dev.vendor_id:04x:dev.product_id:04x") # Open and claim interface 0 dev.open() dev.claim_interface(0)

# Install (optional, system‑wide) sudo cmake --install . | Language | Package Manager | Install Command | |----------|-----------------|-----------------| | Python | pip | pip install usbutil-py | | Rust | cargo | cargo add usbutil | | .NET | NuGet | dotnet add package UsbUtil.Net |

Thmyl Brnamj USBUtil v2.2 – A Comprehensive Overview 1. Introduction Thmyl Brnamj USBUtil v2.2 (hereafter USBUtil 2.2 ) is a lightweight, cross‑platform utility library that abstracts low‑level USB communication into a clean, object‑oriented API. Designed for embedded engineers, device‑firmware developers, and desktop‑application programmers, USBUtil simplifies tasks such as device enumeration, control‑transfer handling, bulk/interrupt data streaming, and hot‑plug event management. thmyl brnamj usbutil v2.2

rc = usbutil_open_by_vidpid(ctx, 0x1234, 0x5678, &dev); if (rc != USBUTIL_SUCCESS) usbutil_exit(ctx); return rc;

def device_left(dev): print("Device removed") dev.release_interface(0) dev.close()

# Run an event loop for 30 seconds with usbutil.EventLoop() as loop: loop.run_until(timeout=30) use usbutil::UsbContext, UsbDevice, TransferResult; use futures::executor::block_on; Introduction Thmyl Brnamj USBUtil v2

# Configure (add -DUSBUTIL_SECURE=ON for secure mode) cmake .. -DCMAKE_BUILD_TYPE=Release -DUSBUTIL_SECURE=ON

// Spawn the async task on the built‑in scheduler let result = block_on(async_bulk_read(&dev))?; println!("Read {} bytes", result.bytes_transferred); Ok(()) } | Header / Module | Important Types | Representative Functions | |-----------------|-----------------|---------------------------| | usbutil.h | usb_context , usb_device , usb_endpoint | usbutil_init() , usbutil_open_by_vidpid() , usbutil_bulk_write() , usbutil_control() | | usbutil_async.h | usb_future , usb_promise | usbutil_bulk_read_async() , usbutil_submit_transfer() | | usbutil_plugin.h | usb_plugin , usb_plugin_api | usbutil_plugin_load() , usbutil_plugin_register_class() | | Python usbutil module | Device , EventLoop | Device.open() , Device.control_transfer() , EventLoop.run() | | Rust crate usbutil | UsbContext , UsbDevice , Transfer | UsbDevice::control() , UsbDevice::bulk_read_async() | | .NET UsbUtil.Net | UsbDevice , UsbTransfer | UsbDevice.Open() , UsbDevice.ReadAsync() |

Note: The embedded ports ship a reduced feature set (no hot‑plug, no plug‑in manager) to keep RAM footprint < 64 KB. | Milestone | Target Release | Planned Features | |-----------|----------------|---------------- println!("Read {} bytes"