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#![allow(non_snake_case, non_upper_case_globals)]
#![allow(non_camel_case_types)]
//! Real-time clock
//!
//! Used by: stm32f405, stm32f407, stm32f427, stm32f429, stm32f446, stm32f469
#[cfg(not(feature = "nosync"))]
pub use crate::stm32f4::peripherals::rtc_v2::Instance;
pub use crate::stm32f4::peripherals::rtc_v2::{RegisterBlock, ResetValues};
pub use crate::stm32f4::peripherals::rtc_v2::{
ALRMAR, ALRMASSR, ALRMBR, ALRMBSSR, BKP0R, BKP10R, BKP11R, BKP12R, BKP13R, BKP14R, BKP15R,
BKP16R, BKP17R, BKP18R, BKP19R, BKP1R, BKP2R, BKP3R, BKP4R, BKP5R, BKP6R, BKP7R, BKP8R, BKP9R,
CALIBR, CALR, CR, DR, ISR, PRER, SHIFTR, SSR, TAFCR, TR, TSDR, TSSSR, TSTR, WPR, WUTR,
};
/// Access functions for the RTC peripheral instance
pub mod RTC {
use super::ResetValues;
#[cfg(not(feature = "nosync"))]
use super::Instance;
#[cfg(not(feature = "nosync"))]
const INSTANCE: Instance = Instance {
addr: 0x40002800,
_marker: ::core::marker::PhantomData,
};
/// Reset values for each field in RTC
pub const reset: ResetValues = ResetValues {
TR: 0x00000000,
DR: 0x00002101,
CR: 0x00000000,
ISR: 0x00000007,
PRER: 0x007F00FF,
WUTR: 0x0000FFFF,
CALIBR: 0x00000000,
ALRMAR: 0x00000000,
ALRMBR: 0x00000000,
WPR: 0x00000000,
SSR: 0x00000000,
SHIFTR: 0x00000000,
TSTR: 0x00000000,
TSDR: 0x00000000,
TSSSR: 0x00000000,
CALR: 0x00000000,
TAFCR: 0x00000000,
ALRMASSR: 0x00000000,
ALRMBSSR: 0x00000000,
BKP0R: 0x00000000,
BKP1R: 0x00000000,
BKP2R: 0x00000000,
BKP3R: 0x00000000,
BKP4R: 0x00000000,
BKP5R: 0x00000000,
BKP6R: 0x00000000,
BKP7R: 0x00000000,
BKP8R: 0x00000000,
BKP9R: 0x00000000,
BKP10R: 0x00000000,
BKP11R: 0x00000000,
BKP12R: 0x00000000,
BKP13R: 0x00000000,
BKP14R: 0x00000000,
BKP15R: 0x00000000,
BKP16R: 0x00000000,
BKP17R: 0x00000000,
BKP18R: 0x00000000,
BKP19R: 0x00000000,
};
#[cfg(not(feature = "nosync"))]
#[allow(renamed_and_removed_lints)]
#[allow(private_no_mangle_statics)]
#[no_mangle]
static mut RTC_TAKEN: bool = false;
/// Safe access to RTC
///
/// This function returns `Some(Instance)` if this instance is not
/// currently taken, and `None` if it is. This ensures that if you
/// do get `Some(Instance)`, you are ensured unique access to
/// the peripheral and there cannot be data races (unless other
/// code uses `unsafe`, of course). You can then pass the
/// `Instance` around to other functions as required. When you're
/// done with it, you can call `release(instance)` to return it.
///
/// `Instance` itself dereferences to a `RegisterBlock`, which
/// provides access to the peripheral's registers.
#[cfg(not(feature = "nosync"))]
#[inline]
pub fn take() -> Option<Instance> {
external_cortex_m::interrupt::free(|_| unsafe {
if RTC_TAKEN {
None
} else {
RTC_TAKEN = true;
Some(INSTANCE)
}
})
}
/// Release exclusive access to RTC
///
/// This function allows you to return an `Instance` so that it
/// is available to `take()` again. This function will panic if
/// you return a different `Instance` or if this instance is not
/// already taken.
#[cfg(not(feature = "nosync"))]
#[inline]
pub fn release(inst: Instance) {
external_cortex_m::interrupt::free(|_| unsafe {
if RTC_TAKEN && inst.addr == INSTANCE.addr {
RTC_TAKEN = false;
} else {
panic!("Released a peripheral which was not taken");
}
});
}
/// Unsafely steal RTC
///
/// This function is similar to take() but forcibly takes the
/// Instance, marking it as taken irregardless of its previous
/// state.
#[cfg(not(feature = "nosync"))]
#[inline]
pub unsafe fn steal() -> Instance {
RTC_TAKEN = true;
INSTANCE
}
}
/// Raw pointer to RTC
///
/// Dereferencing this is unsafe because you are not ensured unique
/// access to the peripheral, so you may encounter data races with
/// other users of this peripheral. It is up to you to ensure you
/// will not cause data races.
///
/// This constant is provided for ease of use in unsafe code: you can
/// simply call for example `write_reg!(gpio, GPIOA, ODR, 1);`.
pub const RTC: *const RegisterBlock = 0x40002800 as *const _;