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>
54 lines
1.8 KiB
Rust
54 lines
1.8 KiB
Rust
//! Display brightness
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/// Struct that holds display brightness
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#[derive(Debug, Copy, Clone, PartialEq, Eq)]
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pub struct Brightness {
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pub(crate) precharge: u8,
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pub(crate) contrast: u8,
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}
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impl Default for Brightness {
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fn default() -> Self {
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Brightness::NORMAL
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}
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}
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impl Brightness {
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/// The dimmest predefined brightness level
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pub const DIMMEST: Brightness = Brightness::custom(0x1, 0x00);
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/// A dim predefined brightness level
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pub const DIM: Brightness = Brightness::custom(0x2, 0x2F);
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/// A medium predefined brightness level
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pub const NORMAL: Brightness = Brightness::custom(0x2, 0x5F);
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/// A bright predefined brightness level
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pub const BRIGHT: Brightness = Brightness::custom(0x2, 0x9F);
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/// The brightest predefined brightness level
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pub const BRIGHTEST: Brightness = Brightness::custom(0x2, 0xFF);
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/// Create a Brightness object from a precharge period and contrast pair.
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///
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/// `precharge` sets the `phase 2` argument of the `0xD9 Set Pre-Charge Period` command and must
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/// be must be between 1 and 15.
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/// The effects of this parameter are hardware dependent. For the common 128x64 displays, values
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/// 1 and 2 result in different brightness levels, values above 2 behave the same was as 2.
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/// See section 10.1.17 of the SSD1306 datasheet for more information.
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///
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/// `contrast` sets the value used in the `0x81 Set Contrast Control` command and must be
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/// between 0 and 255. See section 10.1.7 of the SSD1306 datasheet for more information.
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pub const fn custom(precharge: u8, contrast: u8) -> Self {
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debug_assert!(
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0 < precharge && precharge <= 15,
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"Precharge value must be between 1 and 15"
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);
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Self {
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precharge,
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contrast,
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}
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}
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}
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