max/embassy
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

stm32: remove paste and use refcount statics

Browse Source
This commit is contained in:
xoviat
2023-09-05 17:45:52 -05:00
parent 7622d2eb61
commit fd22f4fac5
3 changed files with 10 additions and 87 deletions
Download Patch File Download Diff File Expand all files Collapse all files

74
embassy-stm32/src/adc/v4.rs
View File

@ -1,10 +1,7 @@
use core::sync::atomic::{AtomicU8, Ordering};
use embedded_hal_02::blocking::delay::DelayUs;
#[allow(unused)]
use pac::adc::vals::{Adcaldif, Boost, Difsel, Exten, Pcsel};
use pac::adccommon::vals::Presc;
use paste::paste;
use super::{Adc, AdcPin, Instance, InternalChannel, Resolution, SampleTime};
use crate::time::Hertz;
@ -59,77 +56,6 @@ impl<T: Instance> super::sealed::InternalChannel<T> for Vbat {
}
}
static ADC12_ENABLE_COUNTER: AtomicU8 = AtomicU8::new(0);
#[cfg(any(stm32g4x3, stm32g4x4))]
static ADC345_ENABLE_COUNTER: AtomicU8 = AtomicU8::new(0);
macro_rules! rcc_peripheral {
($adc_name:ident, $freqs:ident, $ahb:ident, $reg:ident $(, $counter:ident )? ) => {
impl crate::rcc::sealed::RccPeripheral for crate::peripherals::$adc_name {
fn frequency() -> crate::time::Hertz {
critical_section::with(|_| {
match unsafe { crate::rcc::get_freqs() }.$freqs {
Some(ck) => ck,
None => panic!("Invalid ADC clock configuration, AdcClockSource was likely not properly configured.")
}
})
}
fn enable() {
critical_section::with(|_| {
paste!{crate::pac::RCC.[< $ahb enr >]().modify(|w| w.[< set_ $reg en >](true))}
});
$ ( $counter.fetch_add(1, Ordering::SeqCst); )?
}
fn disable() {
$ ( if $counter.load(Ordering::SeqCst) == 1 )? {
critical_section::with(|_| {
paste!{crate::pac::RCC.[< $ahb enr >]().modify(|w| w.[< set_ $reg en >](false))}
})
}
$ ( $counter.fetch_sub(1, Ordering::SeqCst); )?
}
fn reset() {
$ ( if $counter.load(Ordering::SeqCst) == 1 )? {
critical_section::with(|_| {
paste!{crate::pac::RCC.[< $ahb rstr >]().modify(|w| w.[< set_ $reg rst >](true))}
paste!{crate::pac::RCC.[< $ahb rstr >]().modify(|w| w.[< set_ $reg rst >](false))}
});
}
}
}
impl crate::rcc::RccPeripheral for crate::peripherals::$adc_name {}
};
}
#[cfg(stm32g4)]
foreach_peripheral!(
(adc, ADC1) => { rcc_peripheral!(ADC1, adc, ahb2, adc12, ADC12_ENABLE_COUNTER); };
(adc, ADC2) => { rcc_peripheral!(ADC2, adc, ahb2, adc12, ADC12_ENABLE_COUNTER); };
);
#[cfg(stm32g4x1)]
foreach_peripheral!(
(adc, ADC3) => { rcc_peripheral!(ADC3, adc34, ahb2, adc345); };
);
#[cfg(any(stm32g4x3, stm32g4x4))]
foreach_peripheral!(
(adc, ADC3) => { rcc_peripheral!(ADC3, adc34, ahb2, adc345, ADC345_ENABLE_COUNTER); };
(adc, ADC4) => { rcc_peripheral!(ADC4, adc34, ahb2, adc345, ADC345_ENABLE_COUNTER); };
(adc, ADC5) => { rcc_peripheral!(ADC5, adc34, ahb2, adc345, ADC345_ENABLE_COUNTER); };
);
#[cfg(stm32h7)]
foreach_peripheral!(
(adc, ADC1) => { rcc_peripheral!(ADC1, adc, ahb1, adc12, ADC12_ENABLE_COUNTER); };
(adc, ADC2) => { rcc_peripheral!(ADC2, adc, ahb1, adc12, ADC12_ENABLE_COUNTER); };
(adc, ADC3) => { rcc_peripheral!(ADC3, adc, ahb4, adc3); };
);
// NOTE (unused): The prescaler enum closely copies the hardware capabilities,
// but high prescaling doesn't make a lot of sense in the current implementation and is ommited.
#[allow(unused)]