Cortex_M.NVIC

Entities

Simple Types

• Interrupt_ID
• Interrupt_Priority

Constants

• NVIC_PRIO_BITS

Subprograms

• Clear_Pending
• Disable_Interrupt
• Enable_Interrupt
• Enabled
• Pending
• Set_Pending
• Set_Priority

Description

the Nested Vectored Interrupt Controller

Clear_Pending

procedure Clear_Pending (IRQn : Interrupt_ID)

Parameters

IRQn

Disable_Interrupt

procedure Disable_Interrupt (IRQn : Interrupt_ID)

Parameters

IRQn

Enable_Interrupt

procedure Enable_Interrupt (IRQn : Interrupt_ID)

Parameters

IRQn

Enabled

function Enabled (IRQn : Interrupt_ID) return Boolean

Parameters

IRQn

Return Value

Interrupt_ID

type Interrupt_ID is new Natural range 0 .. 31;

Interrupt_Priority

type Interrupt_Priority is new UInt8 range 0 .. (2**NVIC_PRIO_BITS - 1);

NVIC_PRIO_BITS

NVIC_PRIO_BITS : constant := 2;

All Cortex M0 parts have 2 bit priority mask

Pending

function Pending (IRQn : Interrupt_ID) return Boolean

Parameters

IRQn

Return Value

Set_Pending

procedure Set_Pending (IRQn : Interrupt_ID)

Parameters

IRQn

Set_Priority

procedure Set_Priority
  (IRQn     : Interrupt_ID;
   Priority : Interrupt_Priority)

Parameters

IRQn

Priority