Add remaining stm32f4 timers
This commit is contained in:
Thales Fragoso
parent
9d895a6383
commit
fc7977bd9a
@ -26,7 +26,6 @@ use crate::interrupt::{CriticalSection, Mutex, OwnedInterrupt};
|
||||
// corresponds to the next period.
|
||||
//
|
||||
// `period` is a 32bit integer, so It overflows on 2^32 * 2^15 / 32768 seconds of uptime, which is 136 years.
|
||||
|
||||
fn calc_now(period: u32, counter: u16) -> u64 {
|
||||
((period as u64) << 15) + ((counter as u32 ^ ((period & 1) << 15)) as u64)
|
||||
}
|
||||
@ -48,6 +47,13 @@ impl AlarmState {
|
||||
// TODO: This is sometimes wasteful, try to find a better way
|
||||
const ALARM_COUNT: usize = 3;
|
||||
|
||||
/// RTC timer that can be used by the executor and to set alarms.
|
||||
///
|
||||
/// It can work with Timers 2, 3, 4, 5, 9 and 12. Timers 9 and 12 only have one alarm available,
|
||||
/// while the others have three each.
|
||||
/// This timer works internally with a unit of 2^15 ticks, which means that if a call to
|
||||
/// [`embassy::time::Clock::now`] is blocked for that amount of ticks the returned value will be
|
||||
/// wrong (an old value). The current default tick rate is 32768 ticks per second.
|
||||
pub struct RTC<T: Instance> {
|
||||
rtc: T,
|
||||
irq: T::Interrupt,
|
||||
@ -240,6 +246,7 @@ pub trait Instance: sealed::Sealed + Sized + 'static {
|
||||
fn compare_clear_flag(&self, n: usize);
|
||||
fn overflow_interrupt_status(&self) -> bool;
|
||||
fn overflow_clear_flag(&self);
|
||||
// This method should ensure that the values are really updated before returning
|
||||
fn set_psc_arr(&self, psc: u16, arr: u16);
|
||||
fn stop_and_reset(&self);
|
||||
fn start(&self);
|
||||
@ -248,14 +255,17 @@ pub trait Instance: sealed::Sealed + Sized + 'static {
|
||||
fn pclk(clocks: &Clocks) -> u32;
|
||||
}
|
||||
|
||||
mod tim2 {
|
||||
#[allow(unused_macros)]
|
||||
macro_rules! impl_timer {
|
||||
($module:ident: ($TYPE:ident, $INT:ident, $apbenr:ident, $enrbit:expr, $apbrstr:ident, $rstrbit:expr, $ppre:ident, $pclk: ident), 3) => {
|
||||
mod $module {
|
||||
use super::*;
|
||||
use stm32f4xx_hal::pac::{RCC, TIM2};
|
||||
use stm32f4xx_hal::pac::{$TYPE, RCC};
|
||||
|
||||
impl sealed::Sealed for TIM2 {}
|
||||
impl sealed::Sealed for $TYPE {}
|
||||
|
||||
impl Instance for TIM2 {
|
||||
type Interrupt = interrupt::TIM2Interrupt;
|
||||
impl Instance for $TYPE {
|
||||
type Interrupt = interrupt::$INT;
|
||||
const REAL_ALARM_COUNT: usize = 3;
|
||||
|
||||
fn enable_clock(&self) {
|
||||
@ -263,9 +273,9 @@ mod tim2 {
|
||||
unsafe {
|
||||
let rcc = &*RCC::ptr();
|
||||
|
||||
bb::set(&rcc.apb1enr, 0);
|
||||
bb::set(&rcc.apb1rstr, 0);
|
||||
bb::clear(&rcc.apb1rstr, 0);
|
||||
bb::set(&rcc.$apbenr, $enrbit);
|
||||
bb::set(&rcc.$apbrstr, $rstrbit);
|
||||
bb::clear(&rcc.$apbrstr, $rstrbit);
|
||||
}
|
||||
}
|
||||
|
||||
@ -354,11 +364,142 @@ mod tim2 {
|
||||
}
|
||||
|
||||
fn ppre(clocks: &Clocks) -> u8 {
|
||||
clocks.ppre1()
|
||||
clocks.$ppre()
|
||||
}
|
||||
|
||||
fn pclk(clocks: &Clocks) -> u32 {
|
||||
clocks.pclk1().0
|
||||
clocks.$pclk().0
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
|
||||
($module:ident: ($TYPE:ident, $INT:ident, $apbenr:ident, $enrbit:expr, $apbrstr:ident, $rstrbit:expr, $ppre:ident, $pclk: ident), 1) => {
|
||||
mod $module {
|
||||
use super::*;
|
||||
use stm32f4xx_hal::pac::{$TYPE, RCC};
|
||||
|
||||
impl sealed::Sealed for $TYPE {}
|
||||
|
||||
impl Instance for $TYPE {
|
||||
type Interrupt = interrupt::$INT;
|
||||
const REAL_ALARM_COUNT: usize = 1;
|
||||
|
||||
fn enable_clock(&self) {
|
||||
// NOTE(unsafe) It will only be used for atomic operations
|
||||
unsafe {
|
||||
let rcc = &*RCC::ptr();
|
||||
|
||||
bb::set(&rcc.$apbenr, $enrbit);
|
||||
bb::set(&rcc.$apbrstr, $rstrbit);
|
||||
bb::clear(&rcc.$apbrstr, $rstrbit);
|
||||
}
|
||||
}
|
||||
|
||||
fn set_compare(&self, n: usize, value: u16) {
|
||||
// NOTE(unsafe) these registers accept all the range of u16 values
|
||||
match n {
|
||||
0 => self.ccr1.write(|w| unsafe { w.bits(value.into()) }),
|
||||
1 => self.ccr2.write(|w| unsafe { w.bits(value.into()) }),
|
||||
_ => {}
|
||||
}
|
||||
}
|
||||
|
||||
fn set_compare_interrupt(&self, n: usize, enable: bool) {
|
||||
if n > 1 {
|
||||
return;
|
||||
}
|
||||
let bit = n as u8 + 1;
|
||||
unsafe {
|
||||
if enable {
|
||||
bb::set(&self.dier, bit);
|
||||
} else {
|
||||
bb::clear(&self.dier, bit);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
fn compare_interrupt_status(&self, n: usize) -> bool {
|
||||
let status = self.sr.read();
|
||||
match n {
|
||||
0 => status.cc1if().bit_is_set(),
|
||||
1 => status.cc2if().bit_is_set(),
|
||||
_ => false,
|
||||
}
|
||||
}
|
||||
|
||||
fn compare_clear_flag(&self, n: usize) {
|
||||
if n > 1 {
|
||||
return;
|
||||
}
|
||||
let bit = n as u8 + 1;
|
||||
unsafe {
|
||||
bb::clear(&self.sr, bit);
|
||||
}
|
||||
}
|
||||
|
||||
fn overflow_interrupt_status(&self) -> bool {
|
||||
self.sr.read().uif().bit_is_set()
|
||||
}
|
||||
|
||||
fn overflow_clear_flag(&self) {
|
||||
unsafe {
|
||||
bb::clear(&self.sr, 0);
|
||||
}
|
||||
}
|
||||
|
||||
fn set_psc_arr(&self, psc: u16, arr: u16) {
|
||||
// NOTE(unsafe) All u16 values are valid
|
||||
self.psc.write(|w| unsafe { w.bits(psc.into()) });
|
||||
self.arr.write(|w| unsafe { w.bits(arr.into()) });
|
||||
|
||||
unsafe {
|
||||
// Set URS, generate update, clear URS
|
||||
bb::set(&self.cr1, 2);
|
||||
self.egr.write(|w| w.ug().set_bit());
|
||||
bb::clear(&self.cr1, 2);
|
||||
}
|
||||
}
|
||||
|
||||
fn stop_and_reset(&self) {
|
||||
unsafe {
|
||||
bb::clear(&self.cr1, 0);
|
||||
}
|
||||
self.cnt.reset();
|
||||
}
|
||||
|
||||
fn start(&self) {
|
||||
unsafe { bb::set(&self.cr1, 0) }
|
||||
}
|
||||
|
||||
fn counter(&self) -> u16 {
|
||||
self.cnt.read().bits() as u16
|
||||
}
|
||||
|
||||
fn ppre(clocks: &Clocks) -> u8 {
|
||||
clocks.$ppre()
|
||||
}
|
||||
|
||||
fn pclk(clocks: &Clocks) -> u32 {
|
||||
clocks.$pclk().0
|
||||
}
|
||||
}
|
||||
}
|
||||
};
|
||||
}
|
||||
|
||||
#[cfg(not(feature = "stm32f410"))]
|
||||
impl_timer!(tim2: (TIM2, TIM2Interrupt, apb1enr, 0, apb1rstr, 0, ppre1, pclk1), 3);
|
||||
|
||||
#[cfg(not(feature = "stm32f410"))]
|
||||
impl_timer!(tim3: (TIM3, TIM3Interrupt, apb1enr, 1, apb1rstr, 1, ppre1, pclk1), 3);
|
||||
|
||||
#[cfg(not(feature = "stm32f410"))]
|
||||
impl_timer!(tim4: (TIM4, TIM4Interrupt, apb1enr, 2, apb1rstr, 2, ppre1, pclk1), 3);
|
||||
|
||||
impl_timer!(tim5: (TIM5, TIM5Interrupt, apb1enr, 3, apb1rstr, 3, ppre1, pclk1), 3);
|
||||
|
||||
impl_timer!(tim9: (TIM9, TIM1_BRK_TIM9Interrupt, apb2enr, 16, apb2rstr, 16, ppre2, pclk2), 1);
|
||||
|
||||
#[cfg(not(any(feature = "stm32f401", feature = "stm32f410", feature = "stm32f411")))]
|
||||
impl_timer!(tim12: (TIM12, TIM8_BRK_TIM12Interrupt, apb1enr, 6, apb1rstr, 6, ppre1, pclk1), 1);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user