Crate imxrt_usbd 

A USB driver for i.MX RT processors

imxrt-usbd provides a usb-device USB bus implementation, allowing you to add USB device features to your embedded Rust program. See each module for usage and examples.

General guidance

The driver does not configure any of the CCM or CCM_ANALOG registers. You are responsible for configuring these peripherals for proper USB functionality. See the imxrt-usbd hardware examples to see different ways of configuring PLLs and clocks.

You, or something in your dependency hierarchy, must enable an imxrt-ral chip feature; otherwise, this package will not build.

Debugging features

Enable the defmt feature to activate internal logging using defmt.

Example

use imxrt_ral as ral;
use imxrt_usbd::{BusAdapter, Instances};

static EP_MEMORY: imxrt_usbd::EndpointMemory<1024> = imxrt_usbd::EndpointMemory::new();
static EP_STATE: imxrt_usbd::EndpointState = imxrt_usbd::EndpointState::max_endpoints();

let instances = Instances {
    usb: unsafe { ral::usb::USB::instance() },
    usbnc: unsafe { ral::usbnc::USBNC::instance() },
    usbphy: unsafe { ral::usbphy::USBPHY::instance() },
};

let bus_adapter = BusAdapter::new(
    instances,
    &EP_MEMORY,
    &EP_STATE,
);

Modules

gpt

USB general purpose timers.

Structs

BusAdapter

A full- and high-speed UsbBus implementation

EndpointMemory

Memory for endpoint I/O.

EndpointState

Driver state associated with endpoints.

Instances

Aggregate of imxrt-ral USB peripheral instances.

Enums

Speed

USB low / full / high speed setting.

Constants

MAX_ENDPOINTS

The maximum supported number of endpoints.