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refactor: flatten radio.rs and display.rs, zero warnings

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- Flattened radio/ directory to radio.rs (was just one file)
- Flattened display/ to display.rs (combined task + rendering as inline module)
- Moved SH1106 display driver reference from display/ to driver/ (done in Phase 2)
- Suppressed dead_code warnings for conditional USB/UART types in hal
- All boards: zero warnings, zero cfg in application code
This commit is contained in:
swaits committed 2026-04-07 09:43:46 -06:00
1 parent 2c852b9f45
commit 622684cdde
9 files changed
+655 -651
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src/board/esp32s3.rs
+1
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@@ -15,6 +15,7 @@ use crate::hal::esp32s3 as mcu;
// ── Re-export MCU types ─────────────────────────────────────────────
#[allow(unused_imports)] // Each board uses one of USB/UART, not both
pub use mcu::{I2cBus as DisplayI2c, SpiBus, UartDriver, UsbOtgDriver as UsbDriver};
// ── Concrete peripheral types ───────────────────────────────────────
src/channel.rs
+2 -1
View File
@@ -12,8 +12,9 @@ use embassy_sync::watch::Watch;
use crate::protocol::{Command, RadioConfig, Response};
/// Display commands routed from usb_task to display_task.
/// Display commands routed from host_task to display_task.
#[derive(Debug, Clone, Copy, defmt::Format)]
#[allow(dead_code)] // Reset is only used by USB boards (DTR disconnect detection)
pub enum DisplayCommand {
On,
Off,
src/display.rs
+648
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@@ -0,0 +1,648 @@
//! OLED display dashboard: radio status, sparkline, splash screen.
use embassy_executor::task;
use embassy_futures::select::{select3, Either3};
use embassy_time::Timer;
use embedded_graphics::draw_target::DrawTarget;
use embedded_graphics::pixelcolor::BinaryColor;
use crate::board::DisplayParts;
use crate::channel::{DisplayCommand, DisplayCommandChannel, RadioState, RadioStatus, StatusWatch};
use crate::board::{Board, LoRaBoard};
use render::RSSI_HISTORY_LEN;
const BOARD_NAME: &str = Board::NAME;
/// Duration per sparkline slot. 128 slots * 1s = ~2 minutes of history.
const SPARK_SLOT_MS: u64 = 1000;
/// Sentinel: no packet received in this slot. Below SX1262 sensitivity
/// floor (-120 dBm), so it cannot be confused with a real RSSI value.
const NO_SIGNAL: i16 = -121;
struct DisplayState {
rssi_history: [i16; RSSI_HISTORY_LEN],
tx_history: [bool; RSSI_HISTORY_LEN],
rssi_count: usize,
current_slot_rssi: i16,
current_slot_tx: bool,
display_on: bool,
disconnected: bool,
last_status: RadioStatus,
}
impl DisplayState {
fn new() -> Self {
Self {
rssi_history: [NO_SIGNAL; RSSI_HISTORY_LEN],
tx_history: [false; RSSI_HISTORY_LEN],
rssi_count: 0,
current_slot_rssi: NO_SIGNAL,
current_slot_tx: false,
display_on: true,
disconnected: true,
last_status: RadioStatus::default(),
}
}
/// Record an RSSI sample in the current time slot (keep best).
fn record_rssi(&mut self, rssi: i16) {
if self.current_slot_rssi == NO_SIGNAL || rssi > self.current_slot_rssi {
self.current_slot_rssi = rssi;
}
}
/// Mark the current time slot as having a transmit.
fn record_tx(&mut self) {
self.current_slot_tx = true;
}
/// Advance to the next time slot, committing the current slot's data.
fn advance_slot(&mut self) {
let idx = self.rssi_count % RSSI_HISTORY_LEN;
self.rssi_history[idx] = self.current_slot_rssi;
self.tx_history[idx] = self.current_slot_tx;
self.rssi_count += 1;
self.current_slot_rssi = NO_SIGNAL;
self.current_slot_tx = false;
}
/// Whether the active dashboard should be shown (RX or TX mode).
fn is_active(&self) -> bool {
matches!(
self.last_status.state,
RadioState::Receiving | RadioState::Transmitting
)
}
}
/// Render the appropriate screen for the current state into the display buffer.
fn render_current(
display: &mut impl DrawTarget<Color = BinaryColor>,
state: &DisplayState,
board: &render::BoardInfo<'_>,
) {
if state.is_active() {
render::dashboard(
display,
&state.last_status,
&state.rssi_history,
&state.tx_history,
state.rssi_count,
state.current_slot_rssi,
state.current_slot_tx,
board,
);
} else {
render::splash(display, board);
}
}
#[task]
pub async fn display_task(
parts: DisplayParts,
status: &'static StatusWatch,
display_commands: &'static DisplayCommandChannel,
) {
// Format MAC address as "XX:XX:XX:XX:XX:XX"
let mut mac_str: heapless::String<18> = heapless::String::new();
let m = parts.mac;
let _ = core::fmt::Write::write_fmt(
&mut mac_str,
format_args!(
"{:02X}:{:02X}:{:02X}:{:02X}:{:02X}:{:02X}",
m[0], m[1], m[2], m[3], m[4], m[5]
),
);
let board_info = render::BoardInfo {
name: BOARD_NAME,
version: env!("CARGO_PKG_VERSION"),
mac: &mac_str,
};
cfg_if::cfg_if! {
if #[cfg(feature = "wio_tracker_l1")] {
let mut display = crate::driver::sh1106::Sh1106::new(parts.i2c, 0x3D);
Timer::after_millis(100).await;
if display.init().await.is_err() {
defmt::error!("SH1106 init failed — retrying");
Timer::after_millis(500).await;
if display.init().await.is_err() {
defmt::error!("SH1106 init failed twice, giving up");
return;
}
}
if display.set_brightness(0xFF).await.is_err() {
defmt::warn!("display brightness set failed");
}
} else {
use ssd1306::mode::DisplayConfigAsync;
use ssd1306::prelude::DisplayRotation;
use ssd1306::size::DisplaySize128x64;
use ssd1306::{I2CDisplayInterface, Ssd1306Async};
let interface = I2CDisplayInterface::new(parts.i2c);
let mut display = Ssd1306Async::new(interface, DisplaySize128x64, DisplayRotation::Rotate0)
.into_buffered_graphics_mode();
Timer::after_millis(100).await;
if display.init().await.is_err() {
defmt::error!("SSD1306 init failed — retrying");
Timer::after_millis(500).await;
if display.init().await.is_err() {
defmt::error!("SSD1306 init failed twice, giving up");
return;
}
}
if display
.set_brightness(ssd1306::prelude::Brightness::BRIGHTEST)
.await
.is_err()
{
defmt::warn!("display brightness set failed");
}
}
}
let mut state = DisplayState::new();
let Some(mut receiver) = status.receiver() else {
defmt::error!("no watch receiver available for display");
return;
};
// Show splash/waiting screen
render::splash(&mut display, &board_info);
let _ = display.flush().await;
loop {
match select3(
receiver.changed(),
display_commands.receive(),
Timer::after_millis(SPARK_SLOT_MS),
)
.await
{
Either3::First(radio_status) => {
if state.disconnected {
continue;
}
if let Some(rssi) = radio_status.last_rssi {
if radio_status.rx_count != state.last_status.rx_count {
state.record_rssi(rssi);
}
}
if radio_status.tx_count != state.last_status.tx_count {
state.record_tx();
}
state.last_status = radio_status;
if state.display_on {
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
}
Either3::Second(cmd) => match cmd {
DisplayCommand::Off => {
state.disconnected = false;
state.display_on = false;
render::blank(&mut display);
let _ = display.flush().await;
}
DisplayCommand::On => {
state.disconnected = false;
state.display_on = true;
if let Some(s) = receiver.try_get() {
state.last_status = s;
}
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
DisplayCommand::Reset => {
state = DisplayState::new();
render::splash(&mut display, &board_info);
let _ = display.flush().await;
}
},
Either3::Third(()) => {
// Timer tick: advance sparkline slot
state.advance_slot();
if state.display_on && state.is_active() {
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
}
}
}
}
// ── Rendering ───────────────────────────────────────────────────────
mod render {
use core::fmt::Write;
use embedded_graphics::mono_font::ascii::{FONT_6X10, FONT_9X15_BOLD};
use embedded_graphics::mono_font::MonoTextStyle;
use embedded_graphics::pixelcolor::BinaryColor;
use embedded_graphics::prelude::*;
use embedded_graphics::primitives::{Line, PrimitiveStyle, Rectangle};
use embedded_graphics::text::renderer::CharacterStyle;
use embedded_graphics::text::{Alignment, Text};
use heapless::String;
use crate::channel::{RadioState, RadioStatus};
use crate::protocol::Bandwidth;
/// RSSI ring buffer length — supports displays up to 256px wide (2px per bar).
pub const RSSI_HISTORY_LEN: usize = 128;
// Font metrics (FONT_6X10)
const CHAR_W: i32 = 6;
const FONT_H: i32 = 10;
// Mode box: 2 chars + 1px padding each side
const MODE_BOX_W: i32 = 2 * CHAR_W + 2; // 14px
// RSSI mapping range (dBm)
const RSSI_MIN: i16 = -120;
const RSSI_MAX: i16 = 0;
/// Static board identity info for display rendering.
pub struct BoardInfo<'a> {
pub name: &'a str,
pub version: &'a str,
pub mac: &'a str,
}
/// Render the active dashboard (shown when radio is in RX or TX mode).
#[allow(clippy::too_many_arguments)]
pub fn dashboard(
target: &mut impl DrawTarget<Color = BinaryColor>,
status: &RadioStatus,
rssi_history: &[i16; RSSI_HISTORY_LEN],
tx_history: &[bool; RSSI_HISTORY_LEN],
rssi_count: usize,
current_slot_rssi: i16,
current_slot_tx: bool,
board: &BoardInfo,
) {
let bb = target.bounding_box();
let w = bb.size.width as i32;
let h = bb.size.height as i32;
let title_x = MODE_BOX_W + 1;
let title_w = w - title_x;
let header_h = 2 * FONT_H;
let sep1_y = header_h + 3; // 3px gap below header text (clears descenders)
let info_y = sep1_y + 1; // 1px line, info text tight below separator
let sep2_y = info_y + 2 * FONT_H + 3; // 3px gap below info text (clears descenders)
let spark_top = sep2_y + 2; // 1px line + 1px gap above graph
let spark_h = h - spark_top;
let visible_bars = ((w / 2) as usize).min(RSSI_HISTORY_LEN);
let _ = target.clear(BinaryColor::Off);
let style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
let mut buf: String<32> = String::new();
// ── Mode box (left column, 2 rows tall) ─────────────────────────
let fill = PrimitiveStyle::with_fill(BinaryColor::On);
let mut inv_style = MonoTextStyle::new(&FONT_6X10, BinaryColor::Off);
inv_style.set_background_color(Some(BinaryColor::On));
match status.state {
RadioState::Receiving => {
// "RX" inverted on row 0
Rectangle::new(
Point::new(0, 0),
Size::new(MODE_BOX_W as u32, FONT_H as u32),
)
.into_styled(fill)
.draw(target)
.ok();
Text::new("RX", Point::new(1, FONT_H - 1), inv_style)
.draw(target)
.ok();
}
RadioState::Transmitting => {
// "TX" inverted on row 1
Rectangle::new(
Point::new(0, FONT_H),
Size::new(MODE_BOX_W as u32, FONT_H as u32),
)
.into_styled(fill)
.draw(target)
.ok();
Text::new("TX", Point::new(1, 2 * FONT_H - 1), inv_style)
.draw(target)
.ok();
}
RadioState::Idle => {} // Not shown on active screen
}
// Vertical separator between mode box and title box
Line::new(Point::new(MODE_BOX_W, 0), Point::new(MODE_BOX_W, sep1_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Title box (right of mode box) ───────────────────────────────
let title_center_x = title_x + title_w / 2;
// Row 0: "DongLoRa v{version}"
buf.clear();
let _ = write!(buf, "DongLoRa v{}", board.version);
Text::with_alignment(
&buf,
Point::new(title_center_x, FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 1: radio settings "{freq}/{bw}/{sf}/{cr}"
if let Some(cfg) = status.config {
buf.clear();
let freq_mhz = cfg.freq_hz / 1_000_000;
let freq_khz = (cfg.freq_hz % 1_000_000) / 1_000;
let bw_str = match cfg.bw {
Bandwidth::Khz7 => "7.8",
Bandwidth::Khz10 => "10.4",
Bandwidth::Khz15 => "15.6",
Bandwidth::Khz20 => "20.8",
Bandwidth::Khz31 => "31.2",
Bandwidth::Khz41 => "41.7",
Bandwidth::Khz62 => "62.5",
Bandwidth::Khz125 => "125",
Bandwidth::Khz250 => "250",
Bandwidth::Khz500 => "500",
};
let _ = write!(
buf,
"{}.{:03}/{}/{}/{}",
freq_mhz, freq_khz, bw_str, cfg.sf, cfg.cr
);
Text::with_alignment(
&buf,
Point::new(title_center_x, 2 * FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
}
// ── First separator line ────────────────────────────────────────
Line::new(Point::new(0, sep1_y), Point::new(w - 1, sep1_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Info rows (centered) ────────────────────────────────────────
let center_x = w / 2;
// Row 2: packet counters
buf.clear();
let _ = write!(
buf,
"RX:{} TX:{}",
compact_count(status.rx_count),
compact_count(status.tx_count)
);
Text::with_alignment(
&buf,
Point::new(center_x, info_y + FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 3: RSSI + SNR
buf.clear();
match (status.last_rssi, status.last_snr) {
(Some(rssi), Some(snr)) => {
let _ = write!(buf, "RSSI:{}dBm SNR:{}dB", rssi, snr);
}
(Some(rssi), None) => {
let _ = write!(buf, "RSSI:{}dBm", rssi);
}
_ => {
let _ = write!(buf, "No signal");
}
}
Text::with_alignment(
&buf,
Point::new(center_x, info_y + 2 * FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// ── Second separator line ───────────────────────────────────────
Line::new(Point::new(0, sep2_y), Point::new(w - 1, sep2_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Sparkline bar graph ─────────────────────────────────────────
if spark_h > 0 {
rssi_sparkline(
target,
rssi_history,
tx_history,
rssi_count,
current_slot_rssi,
current_slot_tx,
spark_top,
spark_h,
visible_bars,
);
}
}
/// Render the splash/waiting screen (shown when idle or no config).
pub fn splash(target: &mut impl DrawTarget<Color = BinaryColor>, board: &BoardInfo) {
let bb = target.bounding_box();
let w = bb.size.width as i32;
let _ = target.clear(BinaryColor::Off);
let style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
let title_style = MonoTextStyle::new(&FONT_9X15_BOLD, BinaryColor::On);
let mut buf: String<32> = String::new();
let center_x = w / 2;
// Row 1: "DongLoRa" bold left, version small right
Text::new("DongLoRa", Point::new(4, 15), title_style)
.draw(target)
.ok();
buf.clear();
let _ = write!(buf, "v{}", board.version);
Text::with_alignment(&buf, Point::new(w - 2, 15), style, Alignment::Right)
.draw(target)
.ok();
// Row 2: board name
Text::with_alignment(
board.name,
Point::new(center_x, 28),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 3: MAC address
Text::with_alignment(
board.mac,
Point::new(center_x, 41),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 4: status
Text::with_alignment(
"Waiting for host...",
Point::new(center_x, 54),
style,
Alignment::Center,
)
.draw(target)
.ok();
}
/// Format a u32 count compactly for display.
fn compact_count(n: u32) -> String<10> {
let mut s: String<10> = String::new();
if n > 9_999_999 {
let _ = write!(s, "{}M", n / 1_000_000);
} else if n > 999_999 {
let _ = write!(s, "{}k", n / 1_000);
} else {
let _ = write!(s, "{}", n);
}
s
}
/// Render the RSSI history as a bar-chart sparkline.
///
/// The current (uncommitted) slot is rendered at the rightmost position
/// so that incoming packets appear on the graph immediately.
#[allow(clippy::too_many_arguments)]
fn rssi_sparkline(
target: &mut impl DrawTarget<Color = BinaryColor>,
history: &[i16; RSSI_HISTORY_LEN],
tx_history: &[bool; RSSI_HISTORY_LEN],
count: usize,
current_rssi: i16,
current_tx: bool,
spark_top: i32,
spark_h: i32,
visible_bars: usize,
) {
let live = current_rssi > RSSI_MIN || current_tx;
let committed = count.min(RSSI_HISTORY_LEN);
let hist_slots = if live {
committed.min(visible_bars.saturating_sub(1))
} else {
committed.min(visible_bars)
};
let total = hist_slots + if live { 1 } else { 0 };
if total == 0 {
return;
}
let fill = PrimitiveStyle::with_fill(BinaryColor::On);
// Draw committed history
for i in 0..hist_slots {
let idx = if count <= RSSI_HISTORY_LEN {
// Buffer hasn't wrapped: slots occupy indices 0..committed-1.
// Skip oldest entries that don't fit on screen.
let effective_bars = if live { visible_bars - 1 } else { visible_bars };
i + committed.saturating_sub(effective_bars)
} else {
let start = count - RSSI_HISTORY_LEN;
let skip =
RSSI_HISTORY_LEN.saturating_sub(if live { visible_bars - 1 } else { visible_bars });
(start + skip + i) % RSSI_HISTORY_LEN
};
let is_tx = tx_history[idx];
let rssi = history[idx];
if let Some(bar_h) = bar_height(rssi, is_tx, spark_h) {
let x = (visible_bars - total + i) as i32 * 2;
draw_bar(target, x, bar_h, is_tx, spark_top, spark_h, &fill);
}
}
// Draw live (current) bar at the rightmost position
if live {
if let Some(bar_h) = bar_height(current_rssi, current_tx, spark_h) {
let x = (visible_bars - 1) as i32 * 2;
draw_bar(target, x, bar_h, current_tx, spark_top, spark_h, &fill);
}
}
}
/// Compute the pixel height for a sparkline bar, or None to skip.
fn bar_height(rssi: i16, is_tx: bool, spark_h: i32) -> Option<i32> {
let h = if rssi <= RSSI_MIN {
if is_tx {
spark_h / 3
} else {
return None;
}
} else {
let clamped = rssi.clamp(RSSI_MIN, RSSI_MAX);
((clamped - RSSI_MIN) as i32 * spark_h) / (RSSI_MAX - RSSI_MIN) as i32
};
if h == 0 {
None
} else {
Some(h)
}
}
/// Draw a single sparkline bar (solid for RX, dotted for TX).
fn draw_bar(
target: &mut impl DrawTarget<Color = BinaryColor>,
x: i32,
bar_h: i32,
is_tx: bool,
spark_top: i32,
spark_h: i32,
fill: &PrimitiveStyle<BinaryColor>,
) {
let y = spark_top + spark_h - bar_h;
if is_tx {
for row in 0..bar_h {
if row % 2 == 0 {
Rectangle::new(Point::new(x, y + row), Size::new(2, 1))
.into_styled(*fill)
.draw(target)
.ok();
}
}
} else {
Rectangle::new(Point::new(x, y), Size::new(2, bar_h as u32))
.into_styled(*fill)
.draw(target)
.ok();
}
}
/// Clear the display (display-off state).
pub fn blank(target: &mut impl DrawTarget<Color = BinaryColor>) {
let _ = target.clear(BinaryColor::Off);
}
}
src/display/mod.rs
-5
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@@ -1,5 +0,0 @@
//! OLED display dashboard: radio status, sparkline, splash screen.
mod render;
mod task;
pub use task::display_task;
src/display/render.rs
-401
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@@ -1,401 +0,0 @@
use core::fmt::Write;
use embedded_graphics::mono_font::ascii::{FONT_6X10, FONT_9X15_BOLD};
use embedded_graphics::mono_font::MonoTextStyle;
use embedded_graphics::pixelcolor::BinaryColor;
use embedded_graphics::prelude::*;
use embedded_graphics::primitives::{Line, PrimitiveStyle, Rectangle};
use embedded_graphics::text::renderer::CharacterStyle;
use embedded_graphics::text::{Alignment, Text};
use heapless::String;
use crate::channel::{RadioState, RadioStatus};
use crate::protocol::Bandwidth;
/// RSSI ring buffer length — supports displays up to 256px wide (2px per bar).
pub const RSSI_HISTORY_LEN: usize = 128;
// Font metrics (FONT_6X10)
const CHAR_W: i32 = 6;
const FONT_H: i32 = 10;
// Mode box: 2 chars + 1px padding each side
const MODE_BOX_W: i32 = 2 * CHAR_W + 2; // 14px
// RSSI mapping range (dBm)
const RSSI_MIN: i16 = -120;
const RSSI_MAX: i16 = 0;
/// Static board identity info for display rendering.
pub struct BoardInfo<'a> {
pub name: &'a str,
pub version: &'a str,
pub mac: &'a str,
}
/// Render the active dashboard (shown when radio is in RX or TX mode).
#[allow(clippy::too_many_arguments)]
pub fn dashboard(
target: &mut impl DrawTarget<Color = BinaryColor>,
status: &RadioStatus,
rssi_history: &[i16; RSSI_HISTORY_LEN],
tx_history: &[bool; RSSI_HISTORY_LEN],
rssi_count: usize,
current_slot_rssi: i16,
current_slot_tx: bool,
board: &BoardInfo,
) {
let bb = target.bounding_box();
let w = bb.size.width as i32;
let h = bb.size.height as i32;
let title_x = MODE_BOX_W + 1;
let title_w = w - title_x;
let header_h = 2 * FONT_H;
let sep1_y = header_h + 3; // 3px gap below header text (clears descenders)
let info_y = sep1_y + 1; // 1px line, info text tight below separator
let sep2_y = info_y + 2 * FONT_H + 3; // 3px gap below info text (clears descenders)
let spark_top = sep2_y + 2; // 1px line + 1px gap above graph
let spark_h = h - spark_top;
let visible_bars = ((w / 2) as usize).min(RSSI_HISTORY_LEN);
let _ = target.clear(BinaryColor::Off);
let style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
let mut buf: String<32> = String::new();
// ── Mode box (left column, 2 rows tall) ─────────────────────────
let fill = PrimitiveStyle::with_fill(BinaryColor::On);
let mut inv_style = MonoTextStyle::new(&FONT_6X10, BinaryColor::Off);
inv_style.set_background_color(Some(BinaryColor::On));
match status.state {
RadioState::Receiving => {
// "RX" inverted on row 0
Rectangle::new(
Point::new(0, 0),
Size::new(MODE_BOX_W as u32, FONT_H as u32),
)
.into_styled(fill)
.draw(target)
.ok();
Text::new("RX", Point::new(1, FONT_H - 1), inv_style)
.draw(target)
.ok();
}
RadioState::Transmitting => {
// "TX" inverted on row 1
Rectangle::new(
Point::new(0, FONT_H),
Size::new(MODE_BOX_W as u32, FONT_H as u32),
)
.into_styled(fill)
.draw(target)
.ok();
Text::new("TX", Point::new(1, 2 * FONT_H - 1), inv_style)
.draw(target)
.ok();
}
RadioState::Idle => {} // Not shown on active screen
}
// Vertical separator between mode box and title box
Line::new(Point::new(MODE_BOX_W, 0), Point::new(MODE_BOX_W, sep1_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Title box (right of mode box) ───────────────────────────────
let title_center_x = title_x + title_w / 2;
// Row 0: "DongLoRa v{version}"
buf.clear();
let _ = write!(buf, "DongLoRa v{}", board.version);
Text::with_alignment(
&buf,
Point::new(title_center_x, FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 1: radio settings "{freq}/{bw}/{sf}/{cr}"
if let Some(cfg) = status.config {
buf.clear();
let freq_mhz = cfg.freq_hz / 1_000_000;
let freq_khz = (cfg.freq_hz % 1_000_000) / 1_000;
let bw_str = match cfg.bw {
Bandwidth::Khz7 => "7.8",
Bandwidth::Khz10 => "10.4",
Bandwidth::Khz15 => "15.6",
Bandwidth::Khz20 => "20.8",
Bandwidth::Khz31 => "31.2",
Bandwidth::Khz41 => "41.7",
Bandwidth::Khz62 => "62.5",
Bandwidth::Khz125 => "125",
Bandwidth::Khz250 => "250",
Bandwidth::Khz500 => "500",
};
let _ = write!(
buf,
"{}.{:03}/{}/{}/{}",
freq_mhz, freq_khz, bw_str, cfg.sf, cfg.cr
);
Text::with_alignment(
&buf,
Point::new(title_center_x, 2 * FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
}
// ── First separator line ────────────────────────────────────────
Line::new(Point::new(0, sep1_y), Point::new(w - 1, sep1_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Info rows (centered) ────────────────────────────────────────
let center_x = w / 2;
// Row 2: packet counters
buf.clear();
let _ = write!(
buf,
"RX:{} TX:{}",
compact_count(status.rx_count),
compact_count(status.tx_count)
);
Text::with_alignment(
&buf,
Point::new(center_x, info_y + FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 3: RSSI + SNR
buf.clear();
match (status.last_rssi, status.last_snr) {
(Some(rssi), Some(snr)) => {
let _ = write!(buf, "RSSI:{}dBm SNR:{}dB", rssi, snr);
}
(Some(rssi), None) => {
let _ = write!(buf, "RSSI:{}dBm", rssi);
}
_ => {
let _ = write!(buf, "No signal");
}
}
Text::with_alignment(
&buf,
Point::new(center_x, info_y + 2 * FONT_H - 1),
style,
Alignment::Center,
)
.draw(target)
.ok();
// ── Second separator line ───────────────────────────────────────
Line::new(Point::new(0, sep2_y), Point::new(w - 1, sep2_y))
.into_styled(PrimitiveStyle::with_stroke(BinaryColor::On, 1))
.draw(target)
.ok();
// ── Sparkline bar graph ─────────────────────────────────────────
if spark_h > 0 {
rssi_sparkline(
target,
rssi_history,
tx_history,
rssi_count,
current_slot_rssi,
current_slot_tx,
spark_top,
spark_h,
visible_bars,
);
}
}
/// Render the splash/waiting screen (shown when idle or no config).
pub fn splash(target: &mut impl DrawTarget<Color = BinaryColor>, board: &BoardInfo) {
let bb = target.bounding_box();
let w = bb.size.width as i32;
let _ = target.clear(BinaryColor::Off);
let style = MonoTextStyle::new(&FONT_6X10, BinaryColor::On);
let title_style = MonoTextStyle::new(&FONT_9X15_BOLD, BinaryColor::On);
let mut buf: String<32> = String::new();
let center_x = w / 2;
// Row 1: "DongLoRa" bold left, version small right
Text::new("DongLoRa", Point::new(4, 15), title_style)
.draw(target)
.ok();
buf.clear();
let _ = write!(buf, "v{}", board.version);
Text::with_alignment(&buf, Point::new(w - 2, 15), style, Alignment::Right)
.draw(target)
.ok();
// Row 2: board name
Text::with_alignment(
board.name,
Point::new(center_x, 28),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 3: MAC address
Text::with_alignment(
board.mac,
Point::new(center_x, 41),
style,
Alignment::Center,
)
.draw(target)
.ok();
// Row 4: status
Text::with_alignment(
"Waiting for host...",
Point::new(center_x, 54),
style,
Alignment::Center,
)
.draw(target)
.ok();
}
/// Format a u32 count compactly for display.
fn compact_count(n: u32) -> String<10> {
let mut s: String<10> = String::new();
if n > 9_999_999 {
let _ = write!(s, "{}M", n / 1_000_000);
} else if n > 999_999 {
let _ = write!(s, "{}k", n / 1_000);
} else {
let _ = write!(s, "{}", n);
}
s
}
/// Render the RSSI history as a bar-chart sparkline.
///
/// The current (uncommitted) slot is rendered at the rightmost position
/// so that incoming packets appear on the graph immediately.
#[allow(clippy::too_many_arguments)]
fn rssi_sparkline(
target: &mut impl DrawTarget<Color = BinaryColor>,
history: &[i16; RSSI_HISTORY_LEN],
tx_history: &[bool; RSSI_HISTORY_LEN],
count: usize,
current_rssi: i16,
current_tx: bool,
spark_top: i32,
spark_h: i32,
visible_bars: usize,
) {
let live = current_rssi > RSSI_MIN || current_tx;
let committed = count.min(RSSI_HISTORY_LEN);
let hist_slots = if live {
committed.min(visible_bars.saturating_sub(1))
} else {
committed.min(visible_bars)
};
let total = hist_slots + if live { 1 } else { 0 };
if total == 0 {
return;
}
let fill = PrimitiveStyle::with_fill(BinaryColor::On);
// Draw committed history
for i in 0..hist_slots {
let idx = if count <= RSSI_HISTORY_LEN {
// Buffer hasn't wrapped: slots occupy indices 0..committed-1.
// Skip oldest entries that don't fit on screen.
let effective_bars = if live { visible_bars - 1 } else { visible_bars };
i + committed.saturating_sub(effective_bars)
} else {
let start = count - RSSI_HISTORY_LEN;
let skip =
RSSI_HISTORY_LEN.saturating_sub(if live { visible_bars - 1 } else { visible_bars });
(start + skip + i) % RSSI_HISTORY_LEN
};
let is_tx = tx_history[idx];
let rssi = history[idx];
if let Some(bar_h) = bar_height(rssi, is_tx, spark_h) {
let x = (visible_bars - total + i) as i32 * 2;
draw_bar(target, x, bar_h, is_tx, spark_top, spark_h, &fill);
}
}
// Draw live (current) bar at the rightmost position
if live {
if let Some(bar_h) = bar_height(current_rssi, current_tx, spark_h) {
let x = (visible_bars - 1) as i32 * 2;
draw_bar(target, x, bar_h, current_tx, spark_top, spark_h, &fill);
}
}
}
/// Compute the pixel height for a sparkline bar, or None to skip.
fn bar_height(rssi: i16, is_tx: bool, spark_h: i32) -> Option<i32> {
let h = if rssi <= RSSI_MIN {
if is_tx {
spark_h / 3
} else {
return None;
}
} else {
let clamped = rssi.clamp(RSSI_MIN, RSSI_MAX);
((clamped - RSSI_MIN) as i32 * spark_h) / (RSSI_MAX - RSSI_MIN) as i32
};
if h == 0 {
None
} else {
Some(h)
}
}
/// Draw a single sparkline bar (solid for RX, dotted for TX).
fn draw_bar(
target: &mut impl DrawTarget<Color = BinaryColor>,
x: i32,
bar_h: i32,
is_tx: bool,
spark_top: i32,
spark_h: i32,
fill: &PrimitiveStyle<BinaryColor>,
) {
let y = spark_top + spark_h - bar_h;
if is_tx {
for row in 0..bar_h {
if row % 2 == 0 {
Rectangle::new(Point::new(x, y + row), Size::new(2, 1))
.into_styled(*fill)
.draw(target)
.ok();
}
}
} else {
Rectangle::new(Point::new(x, y), Size::new(2, bar_h as u32))
.into_styled(*fill)
.draw(target)
.ok();
}
}
/// Clear the display (display-off state).
pub fn blank(target: &mut impl DrawTarget<Color = BinaryColor>) {
let _ = target.clear(BinaryColor::Off);
}
src/display/task.rs
-240
View File
@@ -1,240 +0,0 @@
use embassy_executor::task;
use embassy_futures::select::{select3, Either3};
use embassy_time::Timer;
use embedded_graphics::draw_target::DrawTarget;
use embedded_graphics::pixelcolor::BinaryColor;
use crate::board::DisplayParts;
use crate::channel::{DisplayCommand, DisplayCommandChannel, RadioState, RadioStatus, StatusWatch};
use crate::board::{Board, LoRaBoard};
use super::render::{self, RSSI_HISTORY_LEN};
const BOARD_NAME: &str = Board::NAME;
/// Duration per sparkline slot. 128 slots * 1s = ~2 minutes of history.
const SPARK_SLOT_MS: u64 = 1000;
/// Sentinel: no packet received in this slot. Below SX1262 sensitivity
/// floor (-120 dBm), so it cannot be confused with a real RSSI value.
const NO_SIGNAL: i16 = -121;
struct DisplayState {
rssi_history: [i16; RSSI_HISTORY_LEN],
tx_history: [bool; RSSI_HISTORY_LEN],
rssi_count: usize,
current_slot_rssi: i16,
current_slot_tx: bool,
display_on: bool,
disconnected: bool,
last_status: RadioStatus,
}
impl DisplayState {
fn new() -> Self {
Self {
rssi_history: [NO_SIGNAL; RSSI_HISTORY_LEN],
tx_history: [false; RSSI_HISTORY_LEN],
rssi_count: 0,
current_slot_rssi: NO_SIGNAL,
current_slot_tx: false,
display_on: true,
disconnected: true,
last_status: RadioStatus::default(),
}
}
/// Record an RSSI sample in the current time slot (keep best).
fn record_rssi(&mut self, rssi: i16) {
if self.current_slot_rssi == NO_SIGNAL || rssi > self.current_slot_rssi {
self.current_slot_rssi = rssi;
}
}
/// Mark the current time slot as having a transmit.
fn record_tx(&mut self) {
self.current_slot_tx = true;
}
/// Advance to the next time slot, committing the current slot's data.
fn advance_slot(&mut self) {
let idx = self.rssi_count % RSSI_HISTORY_LEN;
self.rssi_history[idx] = self.current_slot_rssi;
self.tx_history[idx] = self.current_slot_tx;
self.rssi_count += 1;
self.current_slot_rssi = NO_SIGNAL;
self.current_slot_tx = false;
}
/// Whether the active dashboard should be shown (RX or TX mode).
fn is_active(&self) -> bool {
matches!(
self.last_status.state,
RadioState::Receiving | RadioState::Transmitting
)
}
}
/// Render the appropriate screen for the current state into the display buffer.
fn render_current(
display: &mut impl DrawTarget<Color = BinaryColor>,
state: &DisplayState,
board: &render::BoardInfo<'_>,
) {
if state.is_active() {
render::dashboard(
display,
&state.last_status,
&state.rssi_history,
&state.tx_history,
state.rssi_count,
state.current_slot_rssi,
state.current_slot_tx,
board,
);
} else {
render::splash(display, board);
}
}
#[task]
pub async fn display_task(
parts: DisplayParts,
status: &'static StatusWatch,
display_commands: &'static DisplayCommandChannel,
) {
// Format MAC address as "XX:XX:XX:XX:XX:XX"
let mut mac_str: heapless::String<18> = heapless::String::new();
let m = parts.mac;
let _ = core::fmt::Write::write_fmt(
&mut mac_str,
format_args!(
"{:02X}:{:02X}:{:02X}:{:02X}:{:02X}:{:02X}",
m[0], m[1], m[2], m[3], m[4], m[5]
),
);
let board_info = render::BoardInfo {
name: BOARD_NAME,
version: env!("CARGO_PKG_VERSION"),
mac: &mac_str,
};
cfg_if::cfg_if! {
if #[cfg(feature = "wio_tracker_l1")] {
let mut display = crate::driver::sh1106::Sh1106::new(parts.i2c, 0x3D);
Timer::after_millis(100).await;
if display.init().await.is_err() {
defmt::error!("SH1106 init failed — retrying");
Timer::after_millis(500).await;
if display.init().await.is_err() {
defmt::error!("SH1106 init failed twice, giving up");
return;
}
}
if display.set_brightness(0xFF).await.is_err() {
defmt::warn!("display brightness set failed");
}
} else {
use ssd1306::mode::DisplayConfigAsync;
use ssd1306::prelude::DisplayRotation;
use ssd1306::size::DisplaySize128x64;
use ssd1306::{I2CDisplayInterface, Ssd1306Async};
let interface = I2CDisplayInterface::new(parts.i2c);
let mut display = Ssd1306Async::new(interface, DisplaySize128x64, DisplayRotation::Rotate0)
.into_buffered_graphics_mode();
Timer::after_millis(100).await;
if display.init().await.is_err() {
defmt::error!("SSD1306 init failed — retrying");
Timer::after_millis(500).await;
if display.init().await.is_err() {
defmt::error!("SSD1306 init failed twice, giving up");
return;
}
}
if display
.set_brightness(ssd1306::prelude::Brightness::BRIGHTEST)
.await
.is_err()
{
defmt::warn!("display brightness set failed");
}
}
}
let mut state = DisplayState::new();
let Some(mut receiver) = status.receiver() else {
defmt::error!("no watch receiver available for display");
return;
};
// Show splash/waiting screen
render::splash(&mut display, &board_info);
let _ = display.flush().await;
loop {
match select3(
receiver.changed(),
display_commands.receive(),
Timer::after_millis(SPARK_SLOT_MS),
)
.await
{
Either3::First(radio_status) => {
if state.disconnected {
continue;
}
if let Some(rssi) = radio_status.last_rssi {
if radio_status.rx_count != state.last_status.rx_count {
state.record_rssi(rssi);
}
}
if radio_status.tx_count != state.last_status.tx_count {
state.record_tx();
}
state.last_status = radio_status;
if state.display_on {
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
}
Either3::Second(cmd) => match cmd {
DisplayCommand::Off => {
state.disconnected = false;
state.display_on = false;
render::blank(&mut display);
let _ = display.flush().await;
}
DisplayCommand::On => {
state.disconnected = false;
state.display_on = true;
if let Some(s) = receiver.try_get() {
state.last_status = s;
}
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
DisplayCommand::Reset => {
state = DisplayState::new();
render::splash(&mut display, &board_info);
let _ = display.flush().await;
}
},
Either3::Third(()) => {
// Timer tick: advance sparkline slot
state.advance_slot();
if state.display_on && state.is_active() {
render_current(&mut display, &state, &board_info);
let _ = display.flush().await;
}
}
}
}
}
src/hal/esp32s3.rs
+4
View File
@@ -17,7 +17,9 @@ use static_cell::StaticCell;
pub type SpiBus = SpiDmaBus<'static, esp_hal::Async>;
pub type I2cBus = I2c<'static, esp_hal::Async>;
#[allow(dead_code)] // Used by USB boards, not UART boards
pub type UsbOtgDriver = esp_hal::otg_fs::asynch::Driver<'static>;
#[allow(dead_code)] // Used by UART boards, not USB boards
pub type UartDriver = esp_hal::uart::Uart<'static, esp_hal::Async>;
// ── Timer ───────────────────────────────────────────────────────────
@@ -81,6 +83,7 @@ pub fn init_i2c(
// ── USB OTG ─────────────────────────────────────────────────────────
/// Initialize USB OTG FS driver for CDC-ACM.
#[allow(dead_code)] // Used by USB boards, not UART boards
pub fn init_usb(
usb0: esp_hal::peripherals::USB0<'static>,
dp: esp_hal::peripherals::GPIO20<'static>,
@@ -99,6 +102,7 @@ pub fn init_usb(
// ── UART ────────────────────────────────────────────────────────────
/// Initialize UART0 for boards with USB-UART bridge chips (e.g. CP2102).
#[allow(dead_code)] // Used by UART boards, not USB boards
pub fn init_uart(
uart0: esp_hal::peripherals::UART0<'static>,
tx: esp_hal::peripherals::GPIO43<'static>,
src/radio/task.rs → src/radio.rs
View File
File renamed without changes.
src/radio/mod.rs
-4
View File
@@ -1,4 +0,0 @@
//! LoRa radio control via SX1262.
mod task;
pub use task::radio_task;