rp: add initial version

embassy-macros/src/chip/nrf.rs

@@ -58,5 +58,6 @@ pub fn generate(args: Args) -> TokenStream {
         unsafe { embassy::time::set_clock(rtc) };
 
         let alarm = unsafe { make_static(&mut alarm) };
+        executor.set_alarm(alarm);
     )
 }

embassy-macros/src/chip/rp.rs

@@ -0,0 +1,16 @@
+use darling::FromMeta;
+use proc_macro2::TokenStream;
+use quote::{format_ident, quote};
+use syn::spanned::Spanned;
+
+#[derive(Debug, FromMeta)]
+pub struct Args {}
+
+pub fn generate(args: Args) -> TokenStream {
+    quote!(
+        use embassy_rp::{interrupt, peripherals};
+
+        let mut config = embassy_rp::system::Config::default();
+        unsafe { embassy_rp::system::configure(config) };
+    )
+}

embassy-macros/src/chip/stm32.rs

@@ -53,5 +53,6 @@ pub fn generate(args: Args) -> TokenStream {
         unsafe { embassy::time::set_clock(rtc) };
 
         let alarm = unsafe { make_static(&mut alarm) };
+        executor.set_alarm(alarm);
     )
 }