Attribute Macro config 

#[config]

Allows to provide configuration for the associated driver during initial system configuration.

Important: for this configuration to be taken into account, a specific Cargo feature may need to be enabled on the ariel-os dependency, for each configuration type (see table below).

There is no requirements on the constant’s name.

Parameters

• The name of the driver the constant provides configuration for.

Functionality	Expected type	How to enable
network	embassy_net::Config	See the book section.
rcc	embassy_stm32::rcc::Config	Enable the rcc-config-override Cargo feature.
usb	embassy_usb::Config	Enable the override-usb-config Cargo feature.

Note

The ariel_os crate provides re-exports for the relevant Embassy crates.

Examples

The following provides configuration for the network stack:

use ariel_os::reexports::embassy_net;

#[ariel_os::config(network)]
const NETWORK_CONFIG: embassy_net::Config = {
    use embassy_net::Ipv4Address;

    embassy_net::Config::ipv4_static(embassy_net::StaticConfigV4 {
        address: embassy_net::Ipv4Cidr::new(Ipv4Address::new(10, 42, 0, 61), 24),
        dns_servers: heapless::Vec::new(),
        gateway: Some(Ipv4Address::new(10, 42, 0, 1)),
    })
};

Panics

The ariel-os crate (or ariel-os-embassy, for use in crates which ariel-os depends on) must be a dependency of the crate where this macro is used, otherwise this macro panics.