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feat: super rudimentary triggering

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əlemi 2022-12-27 19:03:11 +01:00
parent aed3598ef7
commit ffd14b2a36
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2 changed files with 25 additions and 1 deletions
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2
src/app.rs
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@ -47,6 +47,7 @@ pub struct AppConfig {
width: u32,
vectorscope: bool,
pub references: bool,
pub triggering: bool,
pub marker_type: symbols::Marker,
pub graph_type: GraphType,
@ -161,6 +162,7 @@ impl From::<&crate::Args> for App {
palette: vec![Color::Red, Color::Yellow],
scale: args.range,
width: args.buffer / 4, // TODO It's 4 because 2 channels and 2 bytes per sample!
triggering: args.triggering,
vectorscope: args.vectorscope,
references: !args.no_reference,
marker_type, graph_type,

24
src/main.rs
View file

@ -61,6 +61,10 @@ struct Args {
#[arg(long, value_name = "N", default_value_t = 32)]
server_buffer: u32,
/// Start drawing at first rising edge
#[arg(long, default_value_t = false)]
triggering: bool,
/// Don't draw reference line
#[arg(long, default_value_t = false)]
no_reference: bool,
@ -171,6 +175,20 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
channels = fmt.oscilloscope(&mut buffer, 2);
}
if app.cfg.triggering {
// TODO allow to customize channel to use for triggering and threshold
if let Some(ch) = channels.get(0) {
let mut discard = 0;
for i in 0..ch.len() { // seek to first sample rising through threshold
if i + 1 < ch.len() && ch[i] <= 0.0 && ch[i+1] > 0.0 { // triggered
break;
} else {
discard += 1;
}
}
for ch in channels.iter_mut() {
*ch = ch[discard..].to_vec();
}
}
}
@ -246,6 +264,9 @@ fn run_app<T : Backend>(args: Args, terminal: &mut Terminal<T>) -> Result<(), io
KeyCode::Char('v') => app.set_vectorscope(!app.vectorscope()),
KeyCode::Char('s') => app.set_scatter(!app.scatter()),
KeyCode::Char('h') => app.cfg.references = !app.cfg.references,
KeyCode::Char('t') => app.cfg.triggering = !app.cfg.triggering,
KeyCode::Up => {},
KeyCode::Down => {},
_ => {},
}
}
@ -298,8 +319,9 @@ fn block(app: &App, sample_rate: f32, framerate: u32) -> Block {
b = b.title(
Span::styled(
format!(
"TUI {} -- {} mode -- range {} -- {} samples -- {:.1} kHz -- {} fps",
"TUI {} -- {}{} mode -- range {} -- {} samples -- {:.1} kHz -- {} fps",
if app.vectorscope() { "Vectorscope" } else { "Oscilloscope" },
if app.cfg.triggering { "triggered " } else { "" },
if app.scatter() { "scatter" } else { "line" },
app.scale(), app.width(), sample_rate / 1000.0, framerate,
),