63 lines
1.6 KiB
Rust
63 lines
1.6 KiB
Rust
use anyhow::Result;
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use std::time::Duration;
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use m::vfd::VfdConfig;
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use m::worker::VfdWorker;
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fn spaces(n: usize) -> String {
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" ".repeat(n)
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}
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fn main() -> Result<()> {
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// args:
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// 1) port (default: /dev/cu.usbmodem101)
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// 2) width (default: 20)
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// 3) delay_ms (default: 400)
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// 4) x (default: 1) 1-based
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// 5) y (default: 1) 1-based line
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// 6) text (default: "BLINK")
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let mut args = std::env::args().skip(1);
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let port_name = args.next().unwrap_or("/dev/cu.usbmodem101".into());
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let width: usize = args.next().as_deref().unwrap_or("20").parse().unwrap_or(20);
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let delay_ms: u64 = args
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.next()
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.as_deref()
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.unwrap_or("400")
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.parse()
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.unwrap_or(400);
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let x: u8 = args.next().as_deref().unwrap_or("1").parse().unwrap_or(1);
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let y: u8 = args.next().as_deref().unwrap_or("1").parse().unwrap_or(1);
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let text = args.next().unwrap_or("BLINK".into());
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let text_len = text.chars().count();
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let cfg = VfdConfig::new(port_name).with_width(width);
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let worker = VfdWorker::start(cfg)?;
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let vfd = worker.handle();
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vfd.clear();
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let _ = vfd.print_line_diff(1, "blink demo (print_at)");
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if y != 1 {
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let _ = vfd.print_at(1, y, ""); // просто чтобы “активировать” строку у некоторых дисплеев
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}
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let blank = spaces(text_len);
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let mut on = false;
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loop {
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if on {
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let _ = vfd.print_at(x, y, &blank);
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} else {
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let _ = vfd.print_at(x, y, &text);
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}
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on = !on;
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std::thread::sleep(Duration::from_millis(delay_ms));
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}
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}
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