Struct Triangle 

pub struct Triangle {
    pub length: LengthCounter,
    /* private fields */
}

Triangle channel state.

Fields

length: LengthCounter

Length counter (uses control bit $4008 bit 7 as halt-flag too).

Implementations

impl Triangle

pub const fn new() -> Self

New triangle channel.

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

$4008 write: control bit + linear counter reload value.

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

$400A write: timer low.

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

$400B write: length load + timer high. Sets the linear reload flag.

pub fn clock_timer(&mut self)

One CPU clock.

pub fn clock_quarter_frame(&mut self)

Quarter-frame clock: linear counter.

pub fn clock_half_frame(&mut self)

Half-frame clock: length counter.

pub fn output(&self) -> u8

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

The ultrasonic-silence behavior is implemented in Self::clock_timer by freezing the sequencer when timer_period < 2; the output simply holds the current step (so it does not pop), matching hardware.

Trait Implementations

impl Clone for Triangle

fn clone(&self) -> Triangle

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Triangle

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

Formats the value using the given formatter.

impl Default for Triangle

fn default() -> Self

Returns the “default value” for a type.

impl Copy for Triangle