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#![allow(non_snake_case, non_upper_case_globals)]
#![allow(non_camel_case_types)]
//! Cryptographic processor
//!
//! Used by: stm32f745, stm32f765, stm32f7x6, stm32f7x7, stm32f7x9
#[cfg(not(feature = "nosync"))]
pub use crate::stm32f7::peripherals::cryp::Instance;
pub use crate::stm32f7::peripherals::cryp::{RegisterBlock, ResetValues};
pub use crate::stm32f7::peripherals::cryp::{
CR, CSGCM0R, CSGCM1R, CSGCM2R, CSGCM3R, CSGCM4R, CSGCM5R, CSGCM6R, CSGCM7R, CSGCMCCM0R,
CSGCMCCM1R, CSGCMCCM2R, CSGCMCCM3R, CSGCMCCM4R, CSGCMCCM5R, CSGCMCCM6R, CSGCMCCM7R, DIN, DMACR,
DOUT, IMSCR, IVLR0, IVLR1, IVRR0, IVRR1, KLR0, KLR1, KLR2, KLR3, KRR0, KRR1, KRR2, KRR3, MISR,
RISR, SR,
};
/// Access functions for the CRYP peripheral instance
pub mod CRYP {
use super::ResetValues;
#[cfg(not(feature = "nosync"))]
use super::Instance;
#[cfg(not(feature = "nosync"))]
const INSTANCE: Instance = Instance {
addr: 0x50060000,
_marker: ::core::marker::PhantomData,
};
/// Reset values for each field in CRYP
pub const reset: ResetValues = ResetValues {
CR: 0x00000000,
SR: 0x00000003,
DIN: 0x00000000,
DOUT: 0x00000000,
DMACR: 0x00000000,
IMSCR: 0x00000000,
RISR: 0x00000001,
MISR: 0x00000000,
CSGCMCCM0R: 0x00000000,
CSGCMCCM1R: 0x00000000,
CSGCMCCM2R: 0x00000000,
CSGCMCCM3R: 0x00000000,
CSGCMCCM4R: 0x00000000,
CSGCMCCM5R: 0x00000000,
CSGCMCCM6R: 0x00000000,
CSGCMCCM7R: 0x00000000,
CSGCM0R: 0x00000000,
CSGCM1R: 0x00000000,
CSGCM2R: 0x00000000,
CSGCM3R: 0x00000000,
CSGCM4R: 0x00000000,
CSGCM5R: 0x00000000,
CSGCM6R: 0x00000000,
CSGCM7R: 0x00000000,
KLR0: 0x00000000,
KRR0: 0x00000000,
KLR1: 0x00000000,
KRR1: 0x00000000,
KLR2: 0x00000000,
KRR2: 0x00000000,
KLR3: 0x00000000,
KRR3: 0x00000000,
IVLR0: 0x00000000,
IVRR0: 0x00000000,
IVLR1: 0x00000000,
IVRR1: 0x00000000,
};
#[cfg(not(feature = "nosync"))]
#[allow(renamed_and_removed_lints)]
#[allow(private_no_mangle_statics)]
#[no_mangle]
static mut CRYP_TAKEN: bool = false;
/// Safe access to CRYP
///
/// 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 CRYP_TAKEN {
None
} else {
CRYP_TAKEN = true;
Some(INSTANCE)
}
})
}
/// Release exclusive access to CRYP
///
/// 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 CRYP_TAKEN && inst.addr == INSTANCE.addr {
CRYP_TAKEN = false;
} else {
panic!("Released a peripheral which was not taken");
}
});
}
/// Unsafely steal CRYP
///
/// 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 {
CRYP_TAKEN = true;
INSTANCE
}
}
/// Raw pointer to CRYP
///
/// 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 CRYP: *const RegisterBlock = 0x50060000 as *const _;