rmk-macro 0.8.0

Proc-macro crate of RMK
Documentation 
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use proc_macro2::TokenStream as TokenStream2;
use quote::quote;
use rmk_config::resolved::Hardware;
#[cfg(feature = "watchdog")]
use rmk_config::resolved::hardware::ChipSeries;

/// Returns (init_tokens, run task) for the chip's hardware watchdog.
///
/// When a chip has watchdog codegen the init tokens declare and start
/// `watchdog_runner`, and the task is `watchdog_runner.run()` which
/// must be joined with the other tasks.
///
/// Chips without codegen return empty tokens and `None`.
#[cfg(feature = "watchdog")]
pub(crate) fn expand_watchdog_init(hardware: &Hardware) -> (TokenStream2, Option<TokenStream2>) {
    let init = match hardware.chip.series {
        ChipSeries::Rp2040 => quote! {
            let mut watchdog_runner = ::rmk::watchdog::Rp2040Watchdog::default_runner(
                ::embassy_rp::watchdog::Watchdog::new(p.WATCHDOG),
            );
        },
        ChipSeries::Nrf52 => quote! {
            let mut watchdog_runner =
                ::rmk::watchdog::Nrf52Watchdog::default_runner(p.WDT);
        },
        ChipSeries::Esp32 => quote! {
            let timg1 = ::esp_hal::timer::timg::TimerGroup::new(p.TIMG1);
            let mut esp_wdt_inner = timg1.wdt;
            esp_wdt_inner.set_timeout(
                ::esp_hal::timer::timg::MwdtStage::Stage0,
                ::esp_hal::time::Duration::from_secs(10),
            );
            esp_wdt_inner.enable();
            let esp_wdt = ::rmk::watchdog::Esp32Watchdog::new(esp_wdt_inner);
            let mut watchdog_runner = ::rmk::watchdog::WatchdogRunner::new(
                esp_wdt,
                ::rmk::embassy_time::Duration::from_secs(5),
            );
        },
        ChipSeries::Stm32 => quote! {},
    };

    if init.is_empty() {
        (init, None)
    } else {
        (init, Some(quote! { watchdog_runner.run() }))
    }
}

/// No-op when the `watchdog` feature is disabled; codegen emits nothing.
#[cfg(not(feature = "watchdog"))]
pub(crate) fn expand_watchdog_init(_hardware: &Hardware) -> (TokenStream2, Option<TokenStream2>) {
    (quote! {}, None)
}