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feat: add display UI with splash screen, dashboard, and RSSI sparkline

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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>
This commit is contained in:
swaitsandClaude Opus 4.6 committed 2026-03-29 20:42:54 -06:00
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commit 3102fc747a
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+4564928 -38
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vendor/serde_spanned/LICENSE-APACHE
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vendor/serde_spanned/LICENSE-MIT
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Copyright (c) Individual contributors
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vendor/serde_spanned/README.md
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# serde_spanned
[![Latest Version](https://img.shields.io/crates/v/serde_spanned.svg)](https://crates.io/crates/serde_spanned)
[![Documentation](https://docs.rs/serde_spanned/badge.svg)](https://docs.rs/serde_spanned)
A [serde]-compatible spanned Value
This allows capturing the location, in bytes, for a value in the original parsed document for
compatible deserializers.
[serde]: https://serde.rs/
## License
Licensed under either of
* Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or <http://www.apache.org/licenses/LICENSE-2.0>)
* MIT license ([LICENSE-MIT](LICENSE-MIT) or <http://opensource.org/licenses/MIT>)
at your option.
### Contribution
Unless you explicitly state otherwise, any contribution intentionally
submitted for inclusion in the work by you, as defined in the Apache-2.0
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vendor/serde_spanned/src/lib.rs
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//! A [serde]-compatible spanned Value
//!
//! This allows capturing the location, in bytes, for a value in the original parsed document for
//! compatible deserializers.
//!
//! [serde]: https://serde.rs/
#![cfg_attr(docsrs, feature(doc_auto_cfg))]
#![warn(missing_docs)]
// Makes rustc abort compilation if there are any unsafe blocks in the crate.
// Presence of this annotation is picked up by tools such as cargo-geiger
// and lets them ensure that there is indeed no unsafe code as opposed to
// something they couldn't detect (e.g. unsafe added via macro expansion, etc).
#![forbid(unsafe_code)]
#![warn(clippy::print_stderr)]
#![warn(clippy::print_stdout)]
mod spanned;
pub use crate::spanned::Spanned;
#[doc(hidden)]
#[cfg(feature = "serde")]
pub mod __unstable {
pub use crate::spanned::is_spanned;
pub use crate::spanned::END_FIELD;
pub use crate::spanned::NAME;
pub use crate::spanned::START_FIELD;
pub use crate::spanned::VALUE_FIELD;
}
#[doc = include_str!("../README.md")]
#[cfg(doctest)]
pub struct ReadmeDoctests;
vendor/serde_spanned/src/spanned.rs
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use std::cmp::Ordering;
use std::hash::{Hash, Hasher};
// Currently serde itself doesn't have a spanned type, so we map our `Spanned`
// to a special value in the serde data model. Namely one with these special
// fields/struct names.
//
// In general, supported deserializers should catch this and not literally emit
// these strings but rather emit `Spanned` as they're intended.
#[doc(hidden)]
#[cfg(feature = "serde")]
pub const NAME: &str = "$__serde_spanned_private_Spanned";
#[doc(hidden)]
#[cfg(feature = "serde")]
pub const START_FIELD: &str = "$__serde_spanned_private_start";
#[doc(hidden)]
#[cfg(feature = "serde")]
pub const END_FIELD: &str = "$__serde_spanned_private_end";
#[doc(hidden)]
#[cfg(feature = "serde")]
pub const VALUE_FIELD: &str = "$__serde_spanned_private_value";
#[doc(hidden)]
#[cfg(feature = "serde")]
pub fn is_spanned(name: &'static str, fields: &'static [&'static str]) -> bool {
name == NAME && fields == [START_FIELD, END_FIELD, VALUE_FIELD]
}
/// A spanned value, indicating the range at which it is defined in the source.
#[derive(Clone, Debug)]
pub struct Spanned<T> {
/// Byte range
span: std::ops::Range<usize>,
/// The spanned value.
value: T,
}
impl<T> Spanned<T> {
/// Create a spanned value encompassing the given byte range.
///
/// # Example
///
/// Transposing a `Spanned<Enum<T>>` into `Enum<Spanned<T>>`:
///
/// ```
/// use serde::de::{Deserialize, Deserializer};
/// use serde_untagged::UntaggedEnumVisitor;
/// use toml::Spanned;
///
/// pub enum Dependency {
/// Simple(Spanned<String>),
/// Detailed(Spanned<DetailedDependency>),
/// }
///
/// impl<'de> Deserialize<'de> for Dependency {
/// fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
/// where
/// D: Deserializer<'de>,
/// {
/// enum DependencyKind {
/// Simple(String),
/// Detailed(DetailedDependency),
/// }
///
/// impl<'de> Deserialize<'de> for DependencyKind {
/// fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
/// where
/// D: Deserializer<'de>,
/// {
/// UntaggedEnumVisitor::new()
/// .expecting(
/// "a version string like \"0.9.8\" or a \
/// detailed dependency like { version = \"0.9.8\" }",
/// )
/// .string(|value| Ok(DependencyKind::Simple(value.to_owned())))
/// .map(|value| value.deserialize().map(DependencyKind::Detailed))
/// .deserialize(deserializer)
/// }
/// }
///
/// let spanned: Spanned<DependencyKind> = Deserialize::deserialize(deserializer)?;
/// let range = spanned.span();
/// Ok(match spanned.into_inner() {
/// DependencyKind::Simple(simple) => Dependency::Simple(Spanned::new(range, simple)),
/// DependencyKind::Detailed(detailed) => Dependency::Detailed(Spanned::new(range, detailed)),
/// })
/// }
/// }
/// #
/// # type DetailedDependency = std::collections::BTreeMap<String, String>;
/// ```
pub fn new(range: std::ops::Range<usize>, value: T) -> Self {
Spanned { span: range, value }
}
/// Byte range
pub fn span(&self) -> std::ops::Range<usize> {
self.span.clone()
}
/// Consumes the spanned value and returns the contained value.
pub fn into_inner(self) -> T {
self.value
}
/// Returns a reference to the contained value.
pub fn get_ref(&self) -> &T {
&self.value
}
/// Returns a mutable reference to the contained value.
pub fn get_mut(&mut self) -> &mut T {
&mut self.value
}
}
impl std::borrow::Borrow<str> for Spanned<String> {
fn borrow(&self) -> &str {
self.get_ref()
}
}
impl<T> AsRef<T> for Spanned<T> {
fn as_ref(&self) -> &T {
self.get_ref()
}
}
impl<T> AsMut<T> for Spanned<T> {
fn as_mut(&mut self) -> &mut T {
self.get_mut()
}
}
impl<T: PartialEq> PartialEq for Spanned<T> {
fn eq(&self, other: &Self) -> bool {
self.value.eq(&other.value)
}
}
impl<T: Eq> Eq for Spanned<T> {}
impl<T: Hash> Hash for Spanned<T> {
fn hash<H: Hasher>(&self, state: &mut H) {
self.value.hash(state);
}
}
impl<T: PartialOrd> PartialOrd for Spanned<T> {
fn partial_cmp(&self, other: &Self) -> Option<Ordering> {
self.value.partial_cmp(&other.value)
}
}
impl<T: Ord> Ord for Spanned<T> {
fn cmp(&self, other: &Self) -> Ordering {
self.value.cmp(&other.value)
}
}
#[cfg(feature = "serde")]
impl<'de, T> serde::de::Deserialize<'de> for Spanned<T>
where
T: serde::de::Deserialize<'de>,
{
fn deserialize<D>(deserializer: D) -> Result<Spanned<T>, D::Error>
where
D: serde::de::Deserializer<'de>,
{
struct SpannedVisitor<T>(::std::marker::PhantomData<T>);
impl<'de, T> serde::de::Visitor<'de> for SpannedVisitor<T>
where
T: serde::de::Deserialize<'de>,
{
type Value = Spanned<T>;
fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
formatter.write_str("a spanned value")
}
fn visit_map<V>(self, mut visitor: V) -> Result<Spanned<T>, V::Error>
where
V: serde::de::MapAccess<'de>,
{
let mut start: Option<usize> = None;
let mut end: Option<usize> = None;
let mut value: Option<T> = None;
while let Some(key) = visitor.next_key()? {
match key {
START_FIELD => {
if start.is_some() {
return Err(serde::de::Error::duplicate_field(START_FIELD));
}
start = Some(visitor.next_value()?);
}
END_FIELD => {
if end.is_some() {
return Err(serde::de::Error::duplicate_field(END_FIELD));
}
end = Some(visitor.next_value()?);
}
VALUE_FIELD => {
if value.is_some() {
return Err(serde::de::Error::duplicate_field(VALUE_FIELD));
}
value = Some(visitor.next_value()?);
}
field => {
return Err(serde::de::Error::unknown_field(
field,
&[START_FIELD, END_FIELD, VALUE_FIELD],
));
}
}
}
match (start, end, value) {
(Some(start), Some(end), Some(value)) => Ok(Spanned {
span: start..end,
value,
}),
(None, _, _) => Err(serde::de::Error::missing_field(START_FIELD)),
(_, None, _) => Err(serde::de::Error::missing_field(END_FIELD)),
(_, _, None) => Err(serde::de::Error::missing_field(VALUE_FIELD)),
}
}
}
static FIELDS: [&str; 3] = [START_FIELD, END_FIELD, VALUE_FIELD];
let visitor = SpannedVisitor(::std::marker::PhantomData);
deserializer.deserialize_struct(NAME, &FIELDS, visitor)
}
}
#[cfg(feature = "serde")]
impl<T: serde::ser::Serialize> serde::ser::Serialize for Spanned<T> {
fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error>
where
S: serde::ser::Serializer,
{
self.value.serialize(serializer)
}
}