diff options
Diffstat (limited to 'rtic-macros/src/codegen/bindings/esp32c3.rs')
| -rw-r--r-- | rtic-macros/src/codegen/bindings/esp32c3.rs | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/rtic-macros/src/codegen/bindings/esp32c3.rs b/rtic-macros/src/codegen/bindings/esp32c3.rs new file mode 100644 index 0000000..a8d58b7 --- /dev/null +++ b/rtic-macros/src/codegen/bindings/esp32c3.rs @@ -0,0 +1,213 @@ +#[cfg(feature = "riscv-esp32c3")] +pub use esp32c3::*; + +#[cfg(feature = "riscv-esp32c3")] +mod esp32c3 { + use crate::{ + analyze::Analysis as CodegenAnalysis, + codegen::util, + syntax::{analyze::Analysis as SyntaxAnalysis, ast::App}, + }; + use proc_macro2::{Span, TokenStream as TokenStream2}; + use quote::quote; + use std::collections::HashSet; + use syn::{parse, Attribute, Ident}; + + #[allow(clippy::too_many_arguments)] + pub fn impl_mutex( + _app: &App, + _analysis: &CodegenAnalysis, + cfgs: &[Attribute], + resources_prefix: bool, + name: &Ident, + ty: &TokenStream2, + ceiling: u8, + ptr: &TokenStream2, + ) -> TokenStream2 { + let path = if resources_prefix { + quote!(shared_resources::#name) + } else { + quote!(#name) + }; + quote!( + #(#cfgs)* + impl<'a> rtic::Mutex for #path<'a> { + type T = #ty; + + #[inline(always)] + fn lock<RTIC_INTERNAL_R>(&mut self, f: impl FnOnce(&mut #ty) -> RTIC_INTERNAL_R) -> RTIC_INTERNAL_R { + /// Priority ceiling + const CEILING: u8 = #ceiling; + unsafe { + rtic::export::lock( + #ptr, + CEILING, + f, + ) + } + } + } + ) + } + + pub fn interrupt_ident() -> Ident { + let span = Span::call_site(); + Ident::new("Interrupt", span) + } + + pub fn extra_assertions(_: &App, _: &SyntaxAnalysis) -> Vec<TokenStream2> { + vec![] + } + + pub fn pre_init_checks(app: &App, _: &SyntaxAnalysis) -> Vec<TokenStream2> { + let mut stmts = vec![]; + // check that all dispatchers exists in the `Interrupt` enumeration regardless of whether + // they are used or not + let rt_err = util::rt_err_ident(); + + for name in app.args.dispatchers.keys() { + stmts.push(quote!(let _ = #rt_err::Interrupt::#name;)); + } + stmts + } + pub fn pre_init_enable_interrupts(app: &App, analysis: &CodegenAnalysis) -> Vec<TokenStream2> { + let mut stmts = vec![]; + let mut curr_cpu_id:u8 = 1; //cpu interrupt id 0 is reserved + let rt_err = util::rt_err_ident(); + let max_prio: usize = 15; //unfortunately this is not part of pac, but we know that max prio is 15. + let interrupt_ids = analysis.interrupts.iter().map(|(p, (id, _))| (p, id)); + // Unmask interrupts and set their priorities + for (&priority, name) in interrupt_ids.chain( + app.hardware_tasks + .values() + .filter_map(|task| Some((&task.args.priority, &task.args.binds))), + ) { + let es = format!( + "Maximum priority used by interrupt vector '{name}' is more than supported by hardware" + ); + // Compile time assert that this priority is supported by the device + stmts.push(quote!( + const _: () = if (#max_prio) <= #priority as usize { ::core::panic!(#es); }; + )); + stmts.push(quote!( + rtic::export::enable( + #rt_err::Interrupt::#name, + #priority, + #curr_cpu_id, + ); + )); + curr_cpu_id += 1; + } + stmts + } + + pub fn architecture_specific_analysis( + app: &App, + _analysis: &SyntaxAnalysis, + ) -> parse::Result<()> { + //check if the dispatchers are supported + for name in app.args.dispatchers.keys() { + let name_s = name.to_string(); + match &*name_s { + "FROM_CPU_INTR0" | "FROM_CPU_INTR1" | "FROM_CPU_INTR2" | "FROM_CPU_INTR3" => {} + + _ => { + return Err(parse::Error::new( + name.span(), + "Only FROM_CPU_INTRX are supported as dispatchers", + )); + } + } + } + + // Check that there are enough external interrupts to dispatch the software tasks and the timer + // queue handler + let mut first = None; + let priorities = app + .software_tasks + .iter() + .map(|(name, task)| { + first = Some(name); + task.args.priority + }) + .filter(|prio| *prio > 0) + .collect::<HashSet<_>>(); + + let need = priorities.len(); + let given = app.args.dispatchers.len(); + if need > given { + let s = { + format!( + "not enough interrupts to dispatch \ + all software tasks (need: {need}; given: {given})" + ) + }; + + // If not enough tasks and first still is None, may cause + // "custom attribute panicked" due to unwrap on None + return Err(parse::Error::new(first.unwrap().span(), s)); + } + Ok(()) + } + + pub fn interrupt_entry(_app: &App, _analysis: &CodegenAnalysis) -> Vec<TokenStream2> { + vec![] + } + + pub fn interrupt_exit(_app: &App, _analysis: &CodegenAnalysis) -> Vec<TokenStream2> { + vec![] + } + + pub fn async_entry( + _app: &App, + _analysis: &CodegenAnalysis, + dispatcher_name: Ident, + ) -> Vec<TokenStream2> { + let mut stmts = vec![]; + stmts.push(quote!( + rtic::export::unpend(rtic::export::Interrupt::#dispatcher_name); //simulate cortex-m behavior by unpending the interrupt on entry. + )); + stmts + } + + pub fn async_prio_limit(app: &App, analysis: &CodegenAnalysis) -> Vec<TokenStream2> { + let max = if let Some(max) = analysis.max_async_prio { + quote!(#max) + } else { + // No limit + let device = &app.args.device; + quote!(1 << #device::NVIC_PRIO_BITS) + }; + + vec![quote!( + /// Holds the maximum priority level for use by async HAL drivers. + #[no_mangle] + static RTIC_ASYNC_MAX_LOGICAL_PRIO: u8 = #max; + )] + } + pub fn handler_config( + app: &App, + analysis: &CodegenAnalysis, + dispatcher_name: Ident, + ) -> Vec<TokenStream2> { + let mut stmts = vec![]; + let mut curr_cpu_id = 1; + //let mut ret = ""; + let interrupt_ids = analysis.interrupts.iter().map(|(p, (id, _))| (p, id)); + for (_, name) in interrupt_ids.chain( + app.hardware_tasks + .values() + .filter_map(|task| Some((&task.args.priority, &task.args.binds))), + ) { + if *name == dispatcher_name{ + let ret = &("cpu_int_".to_owned()+&curr_cpu_id.to_string()+"_handler"); + stmts.push( + quote!(#[export_name = #ret]) + ); + } + curr_cpu_id += 1; + } + + stmts + } +} |