swaitsandClaude Opus 4.6
3102fc747a
Implement full SSD1306 OLED display support: - Splash screen on boot (1.5s) with project name, version, board - Dashboard showing radio state, config, counters, RSSI/SNR - RSSI history sparkline (64-sample ring buffer, 2px-wide bars) - DisplayOn/DisplayOff host commands routed via dedicated channel - Pure render functions against generic DrawTarget (no hardware coupling) - Display on/off control bypasses radio task entirely Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
114 lines
2.9 KiB
Rust
114 lines
2.9 KiB
Rust
//! # Delay
|
|
//!
|
|
//! ## Overview
|
|
//!
|
|
//! The Delay driver provides blocking delay functionalities using the
|
|
//! [now] function.
|
|
//!
|
|
//! ## Configuration
|
|
//!
|
|
//! The delays are implemented in a "best-effort" way, meaning that the CPU will
|
|
//! block for at least the amount of time specified, but accuracy can be
|
|
//! affected by many factors, including interrupt usage.
|
|
//!
|
|
//! ## Usage
|
|
//!
|
|
//! This module implements the blocking [DelayMs] and [DelayUs] traits from
|
|
//! [embedded-hal], both 0.2.x and 1.x.x.
|
|
//!
|
|
//! ## Examples
|
|
//! ### Delay for 1 second
|
|
//! ```rust, no_run
|
|
#![doc = crate::before_snippet!()]
|
|
//! # use esp_hal::delay::Delay;
|
|
//! # use embedded_hal::delay::DelayNs;
|
|
//! let mut delay = Delay::new();
|
|
//!
|
|
//! delay.delay_ms(1000 as u32);
|
|
//! # }
|
|
//! ```
|
|
//!
|
|
//! [DelayMs]: embedded_hal_02::blocking::delay::DelayMs
|
|
//! [DelayUs]: embedded_hal_02::blocking::delay::DelayUs
|
|
//! [embedded-hal]: https://docs.rs/embedded-hal/1.0.0/embedded_hal/delay/index.html
|
|
//! [now]: crate::time::now
|
|
|
|
pub use fugit::MicrosDurationU64;
|
|
|
|
/// Delay driver
|
|
///
|
|
/// Uses the `SYSTIMER` peripheral internally for RISC-V devices, and the
|
|
/// built-in Xtensa timer for Xtensa devices.
|
|
#[derive(Clone, Copy, Default)]
|
|
#[non_exhaustive]
|
|
pub struct Delay;
|
|
|
|
impl<T> embedded_hal_02::blocking::delay::DelayMs<T> for Delay
|
|
where
|
|
T: Into<u32>,
|
|
{
|
|
fn delay_ms(&mut self, ms: T) {
|
|
self.delay_millis(ms.into());
|
|
}
|
|
}
|
|
|
|
impl<T> embedded_hal_02::blocking::delay::DelayUs<T> for Delay
|
|
where
|
|
T: Into<u32>,
|
|
{
|
|
fn delay_us(&mut self, us: T) {
|
|
self.delay_micros(us.into());
|
|
}
|
|
}
|
|
|
|
impl embedded_hal::delay::DelayNs for Delay {
|
|
fn delay_ns(&mut self, ns: u32) {
|
|
self.delay_nanos(ns);
|
|
}
|
|
}
|
|
|
|
impl Delay {
|
|
/// Creates a new `Delay` instance.
|
|
pub const fn new() -> Self {
|
|
Self {}
|
|
}
|
|
|
|
/// Delay for the specified time
|
|
pub fn delay(&self, delay: MicrosDurationU64) {
|
|
let start = crate::time::now();
|
|
|
|
while elapsed_since(start) < delay {}
|
|
}
|
|
|
|
/// Delay for the specified number of milliseconds
|
|
pub fn delay_millis(&self, ms: u32) {
|
|
for _ in 0..ms {
|
|
self.delay_micros(1000);
|
|
}
|
|
}
|
|
|
|
/// Delay for the specified number of microseconds
|
|
pub fn delay_micros(&self, us: u32) {
|
|
let delay = MicrosDurationU64::micros(us as u64);
|
|
self.delay(delay);
|
|
}
|
|
|
|
/// Delay for the specified number of nanoseconds
|
|
pub fn delay_nanos(&self, ns: u32) {
|
|
let delay = MicrosDurationU64::nanos(ns as u64);
|
|
self.delay(delay);
|
|
}
|
|
}
|
|
|
|
fn elapsed_since(start: fugit::Instant<u64, 1, 1_000_000>) -> MicrosDurationU64 {
|
|
let now = crate::time::now();
|
|
|
|
if start.ticks() <= now.ticks() {
|
|
now - start
|
|
} else {
|
|
// now specifies at least 7 happy years, let's ignore this issue for
|
|
// now.
|
|
panic!("Time has wrapped around, which we currently don't handle");
|
|
}
|
|
}
|