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>
79 lines
2.0 KiB
Rust
79 lines
2.0 KiB
Rust
//! Serial Peripheral Interface
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use nb;
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/// Full duplex (master mode)
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///
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/// # Notes
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///
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/// - It's the task of the user of this interface to manage the slave select lines
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///
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/// - Due to how full duplex SPI works each `read` call must be preceded by a `send` call.
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///
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/// - Some SPIs can work with 8-bit *and* 16-bit words. You can overload this trait with different
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/// `Word` types to allow operation in both modes.
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pub trait FullDuplex<Word> {
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/// An enumeration of SPI errors
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type Error;
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/// Reads the word stored in the shift register
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///
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/// **NOTE** A word must be sent to the slave before attempting to call this
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/// method.
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fn read(&mut self) -> nb::Result<Word, Self::Error>;
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/// Sends a word to the slave
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fn send(&mut self, word: Word) -> nb::Result<(), Self::Error>;
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}
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/// Clock polarity
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#[derive(Clone, Copy, PartialEq, Eq)]
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pub enum Polarity {
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/// Clock signal low when idle
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IdleLow,
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/// Clock signal high when idle
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IdleHigh,
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}
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/// Clock phase
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#[derive(Clone, Copy, PartialEq, Eq)]
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pub enum Phase {
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/// Data in "captured" on the first clock transition
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CaptureOnFirstTransition,
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/// Data in "captured" on the second clock transition
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CaptureOnSecondTransition,
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}
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/// SPI mode
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#[derive(Clone, Copy, PartialEq, Eq)]
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pub struct Mode {
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/// Clock polarity
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pub polarity: Polarity,
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/// Clock phase
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pub phase: Phase,
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}
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/// Helper for CPOL = 0, CPHA = 0
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pub const MODE_0: Mode = Mode {
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polarity: Polarity::IdleLow,
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phase: Phase::CaptureOnFirstTransition,
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};
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/// Helper for CPOL = 0, CPHA = 1
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pub const MODE_1: Mode = Mode {
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polarity: Polarity::IdleLow,
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phase: Phase::CaptureOnSecondTransition,
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};
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/// Helper for CPOL = 1, CPHA = 0
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pub const MODE_2: Mode = Mode {
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polarity: Polarity::IdleHigh,
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phase: Phase::CaptureOnFirstTransition,
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};
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/// Helper for CPOL = 1, CPHA = 1
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pub const MODE_3: Mode = Mode {
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polarity: Polarity::IdleHigh,
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phase: Phase::CaptureOnSecondTransition,
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};
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