Remove HAL initialization from #[embassy::main] macro.

2 files changed, 13 insertions, 52 deletions

diff --git a/embassy-macros/Cargo.toml b/embassy-macros/Cargo.toml
index 6abafa581..19a3e9de2 100644
--- a/embassy-macros/Cargo.toml
+++ b/embassy-macros/Cargo.toml
@@ -13,8 +13,5 @@ proc-macro2 = "1.0.29"
 proc-macro = true
 
 [features]
-nrf = []
-stm32 = []
-rp = []
 std = []
 wasm = []
diff --git a/embassy-macros/src/macros/main.rs b/embassy-macros/src/macros/main.rs
index b040edc5a..a0cb0f0b3 100644
--- a/embassy-macros/src/macros/main.rs
+++ b/embassy-macros/src/macros/main.rs
@@ -5,11 +5,7 @@ use quote::quote;
 use crate::util::ctxt::Ctxt;
 
 #[derive(Debug, FromMeta)]
-struct Args {
-    #[allow(unused)]
-    #[darling(default)]
-    config: Option<syn::LitStr>,
-}
+struct Args {}
 
 pub fn run(args: syn::AttributeArgs, f: syn::ItemFn) -> Result<TokenStream, TokenStream> {
     #[allow(unused_variables)]
@@ -20,26 +16,14 @@ pub fn run(args: syn::AttributeArgs, f: syn::ItemFn) -> Result<TokenStream, Toke
     let ctxt = Ctxt::new();
 
     if f.sig.asyncness.is_none() {
-        ctxt.error_spanned_by(&f.sig, "task functions must be async");
+        ctxt.error_spanned_by(&f.sig, "main function must be async");
     }
     if !f.sig.generics.params.is_empty() {
-        ctxt.error_spanned_by(&f.sig, "task functions must not be generic");
+        ctxt.error_spanned_by(&f.sig, "main function must not be generic");
     }
 
-    #[cfg(feature = "stm32")]
-    let hal = Some(quote!(::embassy_stm32));
-    #[cfg(feature = "nrf")]
-    let hal = Some(quote!(::embassy_nrf));
-    #[cfg(feature = "rp")]
-    let hal = Some(quote!(::embassy_rp));
-    #[cfg(not(any(feature = "stm32", feature = "nrf", feature = "rp")))]
-    let hal: Option<TokenStream> = None;
-
-    if hal.is_some() && fargs.len() != 2 {
-        ctxt.error_spanned_by(&f.sig, "main function must have 2 arguments");
-    }
-    if hal.is_none() && fargs.len() != 1 {
-        ctxt.error_spanned_by(&f.sig, "main function must have 1 argument");
+    if fargs.len() != 1 {
+        ctxt.error_spanned_by(&f.sig, "main function must have 1 argument: the spawner.");
     }
 
     ctxt.check()?;
@@ -74,35 +58,15 @@ pub fn run(args: syn::AttributeArgs, f: syn::ItemFn) -> Result<TokenStream, Toke
     };
 
     #[cfg(all(not(feature = "std"), not(feature = "wasm")))]
-    let main = {
-        let config = args.config.map(|s| s.parse::<syn::Expr>().unwrap()).unwrap_or_else(|| {
-            syn::Expr::Verbatim(quote! {
-                Default::default()
+    let main = quote! {
+        #[cortex_m_rt::entry]
+        fn main() -> ! {
+            let mut executor = ::embassy_executor::executor::Executor::new();
+            let executor = unsafe { __make_static(&mut executor) };
+
+            executor.run(|spawner| {
+                spawner.must_spawn(__embassy_main(spawner));
             })
-        });
-
-        let (hal_setup, peris_arg) = match hal {
-            Some(hal) => (
-                quote!(
-                    let p = #hal::init(#config);
-                ),
-                quote!(p),
-            ),
-            None => (quote!(), quote!()),
-        };
-
-        quote! {
-            #[cortex_m_rt::entry]
-            fn main() -> ! {
-                #hal_setup
-
-                let mut executor = ::embassy_executor::executor::Executor::new();
-                let executor = unsafe { __make_static(&mut executor) };
-
-                executor.run(|spawner| {
-                    spawner.must_spawn(__embassy_main(spawner, #peris_arg));
-                })
-            }
         }
     };