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>
24 lines
638 B
Rust
24 lines
638 B
Rust
#![allow(dead_code)]
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const SRAM_LOWER: usize = 0x2000_0000;
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const SRAM_UPPER: usize = 0x3000_0000;
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/// Does this slice reside entirely within RAM?
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pub(crate) fn slice_in_ram<T>(slice: *const [T]) -> bool {
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if slice.is_empty() {
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return true;
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}
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let ptr = slice as *const T as usize;
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ptr >= SRAM_LOWER && (ptr + slice.len() * core::mem::size_of::<T>()) < SRAM_UPPER
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}
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/// Return an error if slice is not in RAM. Skips check if slice is zero-length.
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pub(crate) fn slice_in_ram_or<T, E>(slice: *const [T], err: E) -> Result<(), E> {
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if slice_in_ram(slice) {
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Ok(())
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} else {
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Err(err)
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}
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}
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