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>
38 lines
1023 B
Rust
38 lines
1023 B
Rust
use crate::{BufRead, Read};
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/// Read is implemented for `&[u8]` by copying from the slice.
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///
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/// Note that reading updates the slice to point to the yet unread part.
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/// The slice will be empty when EOF is reached.
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impl Read for &[u8] {
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#[inline]
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async fn read(&mut self, buf: &mut [u8]) -> Result<usize, Self::Error> {
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let amt = core::cmp::min(buf.len(), self.len());
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let (a, b) = self.split_at(amt);
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// First check if the amount of bytes we want to read is small:
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// `copy_from_slice` will generally expand to a call to `memcpy`, and
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// for a single byte the overhead is significant.
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if amt == 1 {
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buf[0] = a[0];
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} else {
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buf[..amt].copy_from_slice(a);
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}
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*self = b;
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Ok(amt)
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}
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}
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impl BufRead for &[u8] {
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#[inline]
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async fn fill_buf(&mut self) -> Result<&[u8], Self::Error> {
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Ok(*self)
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}
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#[inline]
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fn consume(&mut self, amt: usize) {
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*self = &self[amt..];
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}
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}
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