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>
63 lines
1.7 KiB
Rust
63 lines
1.7 KiB
Rust
//! Delays.
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/// Nanoseconds per microsecond
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const NANOS_PER_MICRO: u32 = 1_000;
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/// Nanoseconds per millisecond
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const NANOS_PER_MILLI: u32 = 1_000_000;
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/// Delay with up to nanosecond precision.
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pub trait DelayNs {
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/// Pauses execution for at minimum `ns` nanoseconds. Pause can be longer
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/// if the implementation requires it due to precision/timing issues.
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fn delay_ns(&mut self, ns: u32);
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/// Pauses execution for at minimum `us` microseconds. Pause can be longer
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/// if the implementation requires it due to precision/timing issues.
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fn delay_us(&mut self, mut us: u32) {
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const MAX_MICROS: u32 = u32::MAX / NANOS_PER_MICRO;
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// Avoid potential overflow if micro -> nano conversion is too large
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while us > MAX_MICROS {
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us -= MAX_MICROS;
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self.delay_ns(MAX_MICROS * NANOS_PER_MICRO);
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}
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self.delay_ns(us * NANOS_PER_MICRO);
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}
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/// Pauses execution for at minimum `ms` milliseconds. Pause can be longer
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/// if the implementation requires it due to precision/timing issues.
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#[inline]
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fn delay_ms(&mut self, mut ms: u32) {
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const MAX_MILLIS: u32 = u32::MAX / NANOS_PER_MILLI;
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// Avoid potential overflow if milli -> nano conversion is too large
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while ms > MAX_MILLIS {
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ms -= MAX_MILLIS;
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self.delay_ns(MAX_MILLIS * NANOS_PER_MILLI);
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}
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self.delay_ns(ms * NANOS_PER_MILLI);
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}
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}
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impl<T> DelayNs for &mut T
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where
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T: DelayNs + ?Sized,
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{
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#[inline]
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fn delay_ns(&mut self, ns: u32) {
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T::delay_ns(self, ns);
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}
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#[inline]
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fn delay_us(&mut self, us: u32) {
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T::delay_us(self, us);
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}
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#[inline]
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fn delay_ms(&mut self, ms: u32) {
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T::delay_ms(self, ms);
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}
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}
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