Struct prusst::IntcConfig

pub struct IntcConfig { /* fields omitted */ }

PRU interrupt controller configuration.

A call to the new_populated method automatically initializes the data with the same defaults as the PRUSS_INTC_INITDATA macro of the C prussdrv library. Alternatively, a blank-state initialization data structure can be created with new_empty and then populated with the dedicated methods.

Methods

impl IntcConfig

fn new_empty() -> IntcConfig

Constructs an empty PRU interrupt controller configuration.

fn new_populated() -> IntcConfig

Constructs a PRU interrupt controller configuration with a default mapping.

The mapping reflects the one defined in the PRUSS_INTC_INITDATA C macro of the C prussdrv library, namely:

• it maps:

  • Sysevt::S17 to Channel::C1,
  • Sysevt::S18 to Channel::C0,
  • Sysevt::S19 to Channel::C2,
  • Sysevt::S20 to Channel::C3,
  • Sysevt::S21 to Channel::C0,
  • Sysevt::S22 to Channel::C1,

• it maps:

  • Channel::C0 to Host::Pru0,
  • Channel::C1 to Host::Pru1,
  • Channel::C2 to Host::Evtout0,
  • Channel::C3 to Host::Evtout1,

• it enables:

  • Sysevt::S17,
  • Sysevt::S18,
  • Sysevt::S19,
  • Sysevt::S20,
  • Sysevt::S21,
  • Sysevt::S22,

• it enables:

  • Host::Pru0,
  • Host::Pru1,
  • Host::Evtout0,
  • Host::Evtout1

fn enable_sysevts(&mut self, sysevts: &[Sysevt])

Enables the specified system events.

Panics

This will panic if a system event is enabled several times.

fn enable_hosts(&mut self, hosts: &[Host])

Enables the specified host interrupts.

Panics

This will panic if a host interrupt is enabled several times.

fn auto_enable_sysevts(&mut self)

Automatically enables system events that are already assigned to a channel.

fn auto_enable_hosts(&mut self)

Automatically enables host interrupts that are already mapped to a channel.

fn map_sysevts_to_channels(&mut self, scmap: &[(Sysevt, Channel)])

Assigns system events to channels.

A channel can be targeted by several events but an event can be mapped to only one channel.

Panics

This will panic if a system event is mapped to several channels simultaneously.

fn map_channels_to_hosts(&mut self, chmap: &[(Channel, Host)])

Assigns channel numbers to host interrupts.

A host interrupt can be targeted by several channels but a channel can be mapped to only one host.

Panics

This will panic if a channel is mapped to several hosts.

Trait Implementations

impl Clone for IntcConfig

fn clone(&self) -> IntcConfig

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.