106 lines
2.3 KiB
Rust
106 lines
2.3 KiB
Rust
use hal::gpio::{Output, PushPull};
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use hal::prelude::*;
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pub type Led = hal::gpio::gpiod::PD<Output<PushPull>>;
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#[derive(Debug, Eq, PartialEq)]
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pub enum Direction {
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Clockwise,
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CounterClockwise,
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}
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impl Direction {
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fn flip(&self) -> Direction {
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match self {
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Direction::Clockwise => Direction::CounterClockwise,
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Direction::CounterClockwise => Direction::Clockwise,
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}
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}
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}
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#[derive(Debug, Eq, PartialEq)]
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pub enum Mode {
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Off,
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Cycle,
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Accelerometer,
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}
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pub struct LedRing {
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pub direction: Direction,
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pub mode: Mode,
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pub index: usize,
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pub leds: [crate::Led; 4],
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}
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impl LedRing {
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pub const PERIOD: u32 = 8_000_000;
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pub fn from(leds: [crate::Led; 4]) -> LedRing {
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LedRing {
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direction: Direction::Clockwise,
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mode: Mode::Cycle,
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index: 0,
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leds,
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}
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}
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pub fn enable_cycle(&mut self) {
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self.mode = Mode::Cycle;
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}
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pub fn enable_accel(&mut self) {
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self.mode = Mode::Accelerometer;
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}
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pub fn disable(&mut self) {
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self.mode = Mode::Off;
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}
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pub fn is_mode_cycle(&self) -> bool {
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self.mode == Mode::Cycle
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}
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pub fn is_mode_accel(&self) -> bool {
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self.mode == Mode::Accelerometer
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}
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pub fn reverse(&mut self) {
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self.direction = self.direction.flip();
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}
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pub fn advance(&mut self) {
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let num_leds = self.leds.len();
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self.leds[self.index].set_high();
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self.leds[(self.index + 2) % num_leds].set_low();
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self.index = match self.direction {
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Direction::Clockwise => (self.index + 1) % num_leds,
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Direction::CounterClockwise => (self.index + 3) % num_leds,
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};
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}
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pub fn all_on(&mut self) {
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for led in self.leds.iter_mut() {
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led.set_high();
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}
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}
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pub fn all_off(&mut self) {
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for led in self.leds.iter_mut() {
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led.set_low();
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}
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}
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pub fn set_directions(&mut self, directions: [bool; 4]) {
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for setting in self.leds.iter_mut().zip(directions.iter()) {
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let (led, on_off) = setting;
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if *on_off {
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led.set_high();
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} else {
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led.set_low();
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}
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}
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}
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}
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