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Enable clock by default for stm32l0

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Modify init function to return a Clock instance defined by a per-chip
SystemClock type and use this in macro setup

A proof of concept implementation for STM32 L0 chips.

This allows using embassy::main macros for STM32 devices that have the
clock setup logic.
This commit is contained in:
Ulf Lilleengen
2021-05-25 17:09:01 +02:00
parent a126e17fb2
commit c501b162fc
7 changed files with 614 additions and 25 deletions
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15
embassy-macros/src/chip/stm32.rs
View File

@ -7,20 +7,17 @@ pub fn generate(embassy_prefix: &ModulePrefix, config: syn::Expr) -> TokenStream
let embassy_stm32_path = embassy_prefix.append("embassy_stm32").path();
quote!(
use #embassy_stm32_path::{clock::Clock};
use #embassy_stm32_path::{interrupt, peripherals, clock::Clock, time::Hertz};
let p = #embassy_stm32_path::init(#config);
let (p, mut c) = #embassy_stm32_path::init(#config);
/*
let mut rtc = #embass::RTC::new(unsafe { <peripherals::TIM2 as #embassy_path::util::Steal>::steal() }, interrupt::take!(TIM2));
let rtc = unsafe { make_static(&mut rtc) };
rtc.start();
let mut alarm = rtc.alarm0();
let clock = unsafe { make_static(&mut c) };
clock.start();
unsafe { #embassy_path::time::set_clock(rtc) };
let mut alarm = clock.alarm1();
unsafe { #embassy_path::time::set_clock(clock) };
let alarm = unsafe { make_static(&mut alarm) };
executor.set_alarm(alarm);
*/
)
}

7
embassy-macros/src/lib.rs
View File

@ -350,6 +350,13 @@ pub fn main(args: TokenStream, item: TokenStream) -> TokenStream {
#[cortex_m_rt::entry]
fn main() -> ! {
rtt_init_print!();
unsafe {
log::set_logger_racy(&LOGGER).unwrap();
}
log::set_max_level(log::LevelFilter::Trace);
log::info!("Hello World!");
unsafe fn make_static<T>(t: &mut T) -> &'static mut T {
::core::mem::transmute(t)
}