Struct cortex_m::peripheral::NVIC

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pub struct NVIC { /* private fields */ }
Expand description

Nested Vector Interrupt Controller

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impl NVIC

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pub fn request<I>(&mut self, interrupt: I)
where I: InterruptNumber,

Request an IRQ in software

Writing a value to the INTID field is the same as manually pending an interrupt by setting the corresponding interrupt bit in an Interrupt Set Pending Register. This is similar to NVIC::pend.

This method is not available on ARMv6-M chips.

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pub fn mask<I>(interrupt: I)
where I: InterruptNumber,

Disables interrupt

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pub unsafe fn unmask<I>(interrupt: I)
where I: InterruptNumber,

Enables interrupt

This function is unsafe because it can break mask-based critical sections

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pub fn get_priority<I>(interrupt: I) -> u8
where I: InterruptNumber,

Returns the NVIC priority of interrupt

NOTE NVIC encodes priority in the highest bits of a byte so values like 1 and 2 map to the same priority. Also for NVIC priorities, a lower value (e.g. 16) has higher priority (urgency) than a larger value (e.g. 32).

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pub fn is_active<I>(interrupt: I) -> bool
where I: InterruptNumber,

Is interrupt active or pre-empted and stacked

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pub fn is_enabled<I>(interrupt: I) -> bool
where I: InterruptNumber,

Checks if interrupt is enabled

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pub fn is_pending<I>(interrupt: I) -> bool
where I: InterruptNumber,

Checks if interrupt is pending

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pub fn pend<I>(interrupt: I)
where I: InterruptNumber,

Forces interrupt into pending state

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pub unsafe fn set_priority<I>(&mut self, interrupt: I, prio: u8)
where I: InterruptNumber,

Sets the “priority” of interrupt to prio

NOTE See get_priority method for an explanation of how NVIC priorities work.

On ARMv6-M, updating an interrupt priority requires a read-modify-write operation. On ARMv7-M, the operation is performed in a single atomic write operation.

§Unsafety

Changing priority levels can break priority-based critical sections (see register::basepri) and compromise memory safety.

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pub fn unpend<I>(interrupt: I)
where I: InterruptNumber,

Clears interrupt’s pending state

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impl NVIC

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pub const PTR: *const RegisterBlock = {0xe000e100 as *const peripheral::nvic::RegisterBlock}

Pointer to the register block

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pub const fn ptr() -> *const RegisterBlock

👎Deprecated since 0.7.5: Use the associated constant PTR instead

Returns a pointer to the register block

Trait Implementations§

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impl Deref for NVIC

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type Target = RegisterBlock

The resulting type after dereferencing.
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fn deref(&self) -> &Self::Target

Dereferences the value.
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impl Send for NVIC

Auto Trait Implementations§

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impl Freeze for NVIC

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impl RefUnwindSafe for NVIC

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impl !Sync for NVIC

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impl Unpin for NVIC

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impl UnwindSafe for NVIC

Blanket Implementations§

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.