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donglora/vendor/zerocopy/tests/ui/transmute-ptr-to-usize.rs
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swaitsandClaude Opus 4.6 3102fc747a feat: add display UI with splash screen, dashboard, and RSSI sparkline
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>
2026-03-29 20:42:54 -06:00

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Rust

// Copyright 2022 The Fuchsia Authors
//
// Licensed under a BSD-style license <LICENSE-BSD>, Apache License, Version 2.0
// <LICENSE-APACHE or https://www.apache.org/licenses/LICENSE-2.0>, or the MIT
// license <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your option.
// This file may not be copied, modified, or distributed except according to
// those terms.
include!("../include.rs");
use zerocopy::transmute;
fn main() {}
// It is unclear whether we can or should support this transmutation, especially
// in a const context. This test ensures that even if such a transmutation
// becomes valid due to the requisite implementations of `FromBytes` being
// added, that we re-examine whether it should specifically be valid in a const
// context.
const POINTER_VALUE: usize = transmute!(&0usize as *const usize);
//~[msrv, stable, nightly]^ ERROR: the trait bound `*const usize: IntoBytes` is not satisfied