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#![allow(non_snake_case, non_upper_case_globals)]
#![allow(non_camel_case_types)]
//! DMA controller
//!
//! Used by: stm32f401, stm32f410, stm32f411, stm32f412
#[cfg(not(feature = "nosync"))]
pub use crate::stm32f4::peripherals::dma_v1::Instance;
pub use crate::stm32f4::peripherals::dma_v1::{RegisterBlock, ResetValues};
pub use crate::stm32f4::peripherals::dma_v1::{
CR0, CR1, CR2, CR3, CR4, CR5, CR6, CR7, FCR0, FCR1, FCR2, FCR3, FCR4, FCR5, FCR6, FCR7, HIFCR,
HISR, LIFCR, LISR, M0AR0, M0AR1, M0AR2, M0AR3, M0AR4, M0AR5, M0AR6, M0AR7, M1AR0, M1AR1, M1AR2,
M1AR3, M1AR4, M1AR5, M1AR6, M1AR7, NDTR0, NDTR1, NDTR2, NDTR3, NDTR4, NDTR5, NDTR6, NDTR7,
PAR0, PAR1, PAR2, PAR3, PAR4, PAR5, PAR6, PAR7,
};
/// Access functions for the DMA1 peripheral instance
pub mod DMA1 {
use super::ResetValues;
#[cfg(not(feature = "nosync"))]
use super::Instance;
#[cfg(not(feature = "nosync"))]
const INSTANCE: Instance = Instance {
addr: 0x40026000,
_marker: ::core::marker::PhantomData,
};
/// Reset values for each field in DMA1
pub const reset: ResetValues = ResetValues {
LISR: 0x00000000,
HISR: 0x00000000,
LIFCR: 0x00000000,
HIFCR: 0x00000000,
CR0: 0x00000000,
NDTR0: 0x00000000,
PAR0: 0x00000000,
M0AR0: 0x00000000,
M1AR0: 0x00000000,
FCR0: 0x00000021,
CR1: 0x00000000,
NDTR1: 0x00000000,
PAR1: 0x00000000,
M0AR1: 0x00000000,
M1AR1: 0x00000000,
FCR1: 0x00000021,
CR2: 0x00000000,
NDTR2: 0x00000000,
PAR2: 0x00000000,
M0AR2: 0x00000000,
M1AR2: 0x00000000,
FCR2: 0x00000021,
CR3: 0x00000000,
NDTR3: 0x00000000,
PAR3: 0x00000000,
M0AR3: 0x00000000,
M1AR3: 0x00000000,
FCR3: 0x00000021,
CR4: 0x00000000,
NDTR4: 0x00000000,
PAR4: 0x00000000,
M0AR4: 0x00000000,
M1AR4: 0x00000000,
FCR4: 0x00000021,
CR5: 0x00000000,
NDTR5: 0x00000000,
PAR5: 0x00000000,
M0AR5: 0x00000000,
M1AR5: 0x00000000,
FCR5: 0x00000021,
CR6: 0x00000000,
NDTR6: 0x00000000,
PAR6: 0x00000000,
M0AR6: 0x00000000,
M1AR6: 0x00000000,
FCR6: 0x00000021,
CR7: 0x00000000,
NDTR7: 0x00000000,
PAR7: 0x00000000,
M0AR7: 0x00000000,
M1AR7: 0x00000000,
FCR7: 0x00000021,
};
#[cfg(not(feature = "nosync"))]
#[allow(renamed_and_removed_lints)]
#[allow(private_no_mangle_statics)]
#[no_mangle]
static mut DMA1_TAKEN: bool = false;
/// Safe access to DMA1
///
/// 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 DMA1_TAKEN {
None
} else {
DMA1_TAKEN = true;
Some(INSTANCE)
}
})
}
/// Release exclusive access to DMA1
///
/// 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 DMA1_TAKEN && inst.addr == INSTANCE.addr {
DMA1_TAKEN = false;
} else {
panic!("Released a peripheral which was not taken");
}
});
}
/// Unsafely steal DMA1
///
/// 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 {
DMA1_TAKEN = true;
INSTANCE
}
}
/// Raw pointer to DMA1
///
/// 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 DMA1: *const RegisterBlock = 0x40026000 as *const _;
/// Access functions for the DMA2 peripheral instance
pub mod DMA2 {
use super::ResetValues;
#[cfg(not(feature = "nosync"))]
use super::Instance;
#[cfg(not(feature = "nosync"))]
const INSTANCE: Instance = Instance {
addr: 0x40026400,
_marker: ::core::marker::PhantomData,
};
/// Reset values for each field in DMA2
pub const reset: ResetValues = ResetValues {
LISR: 0x00000000,
HISR: 0x00000000,
LIFCR: 0x00000000,
HIFCR: 0x00000000,
CR0: 0x00000000,
NDTR0: 0x00000000,
PAR0: 0x00000000,
M0AR0: 0x00000000,
M1AR0: 0x00000000,
FCR0: 0x00000021,
CR1: 0x00000000,
NDTR1: 0x00000000,
PAR1: 0x00000000,
M0AR1: 0x00000000,
M1AR1: 0x00000000,
FCR1: 0x00000021,
CR2: 0x00000000,
NDTR2: 0x00000000,
PAR2: 0x00000000,
M0AR2: 0x00000000,
M1AR2: 0x00000000,
FCR2: 0x00000021,
CR3: 0x00000000,
NDTR3: 0x00000000,
PAR3: 0x00000000,
M0AR3: 0x00000000,
M1AR3: 0x00000000,
FCR3: 0x00000021,
CR4: 0x00000000,
NDTR4: 0x00000000,
PAR4: 0x00000000,
M0AR4: 0x00000000,
M1AR4: 0x00000000,
FCR4: 0x00000021,
CR5: 0x00000000,
NDTR5: 0x00000000,
PAR5: 0x00000000,
M0AR5: 0x00000000,
M1AR5: 0x00000000,
FCR5: 0x00000021,
CR6: 0x00000000,
NDTR6: 0x00000000,
PAR6: 0x00000000,
M0AR6: 0x00000000,
M1AR6: 0x00000000,
FCR6: 0x00000021,
CR7: 0x00000000,
NDTR7: 0x00000000,
PAR7: 0x00000000,
M0AR7: 0x00000000,
M1AR7: 0x00000000,
FCR7: 0x00000021,
};
#[cfg(not(feature = "nosync"))]
#[allow(renamed_and_removed_lints)]
#[allow(private_no_mangle_statics)]
#[no_mangle]
static mut DMA2_TAKEN: bool = false;
/// Safe access to DMA2
///
/// 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 DMA2_TAKEN {
None
} else {
DMA2_TAKEN = true;
Some(INSTANCE)
}
})
}
/// Release exclusive access to DMA2
///
/// 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 DMA2_TAKEN && inst.addr == INSTANCE.addr {
DMA2_TAKEN = false;
} else {
panic!("Released a peripheral which was not taken");
}
});
}
/// Unsafely steal DMA2
///
/// 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 {
DMA2_TAKEN = true;
INSTANCE
}
}
/// Raw pointer to DMA2
///
/// 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 DMA2: *const RegisterBlock = 0x40026400 as *const _;