RISC-V support over CLINT (#815)

* Rebase to master

* using interrupt_mod

* bug fixes

* fix other backends

* Add changelog

* forgot about rtic-macros

* backend-specific configuration

* core peripherals optional over macro argument

* pre_init_preprocessing binding

* CI for RISC-V (WIP)

* separation of concerns

* add targets for RISC-V examples

* remove qemu feature

* prepare examples folder

* move examples all together

* move ci out of examples

* minor changes

* add cortex-m

* new xtask: proof of concept

* fix build.yml

* feature typo

* clean rtic examples

* reproduce weird issue

* remove unsafe code in user app

* update dependencies

* allow builds on riscv32imc

* let's fix QEMU

* Update .github/workflows/build.yml

Co-authored-by: Henrik Tjäder <henrik@tjaders.com>

* New build.rs

* removing test features

* adapt ui test to new version of clippy

* add more examples to RISC-V backend

* proper configuration of heapless for riscv32imc

* opt-out examples for riscv32imc

* point to new version of riscv-slic

* adapt new macro bindings

* adapt examples and CI to stable

* fix cortex-m CI

* Review

---------

Co-authored-by: Henrik Tjäder <henrik@tjaders.com>

1 files changed, 6 insertions, 4 deletions

diff --git a/rtic-macros/src/codegen/pre_init.rs b/rtic-macros/src/codegen/pre_init.rs
index a2d0e8c..8de75ff 100644
--- a/rtic-macros/src/codegen/pre_init.rs
+++ b/rtic-macros/src/codegen/pre_init.rs
@@ -11,10 +11,12 @@ pub fn codegen(app: &App, analysis: &Analysis) -> Vec<TokenStream2> {
     // Disable interrupts -- `init` must run with interrupts disabled
     stmts.push(quote!(rtic::export::interrupt::disable();));
 
-    stmts.push(quote!(
-        // To set the variable in cortex_m so the peripherals cannot be taken multiple times
-        let mut core: rtic::export::Peripherals = rtic::export::Peripherals::steal().into();
-    ));
+    if app.args.core {
+        stmts.push(quote!(
+            // To set the variable in cortex_m so the peripherals cannot be taken multiple times
+            let mut core: rtic::export::Peripherals = rtic::export::Peripherals::steal().into();
+        ));
+    }
 
     stmts.append(&mut pre_init_checks(app, analysis));