Struct Pulse 

pub struct Pulse {
    pub envelope: Envelope,
    pub length: LengthCounter,
    /* private fields */
}

Pulse channel state.

Fields

envelope: Envelope

Envelope generator.

length: LengthCounter

Length counter.

Implementations

impl Pulse

pub const fn new(is_pulse1: bool) -> Self

Construct a new pulse channel. is_pulse1=true for the pulse-1 sweep negation flavor (one’s complement).

pub fn write_ctrl(&mut self, value: u8)

$4000 / $4004 write: duty + length-halt + envelope.

pub fn write_sweep(&mut self, value: u8)

$4001 / $4005 write: sweep config.

pub fn write_timer_lo(&mut self, value: u8)

$4002 / $4006 write: timer low.

pub fn write_timer_hi(&mut self, value: u8)

$4003 / $4007 write: length load + timer high.

pub fn clock_timer(&mut self)

One APU clock (half CPU clock).

pub fn clock_half_frame(&mut self)

Half-frame clock: sweep + length.

pub fn clock_quarter_frame(&mut self)

Quarter-frame clock: envelope.

pub fn muted(&self) -> bool

Sweep mute: timer < 8 OR target > $7FF.

pub fn output(&self) -> u8

Per-cycle output volume (0..=15).

Trait Implementations

impl Clone for Pulse

fn clone(&self) -> Pulse

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Pulse

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Copy for Pulse