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>
32 lines
889 B
Rust
32 lines
889 B
Rust
//! This is not an example; this is a linker test that ensures
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//! that the jump from HardFault to _HardFault doesn't exceed
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//! the 2kB limit of the branch instruction.
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#![deny(warnings)]
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#![no_main]
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#![no_std]
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extern crate cortex_m_rt;
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extern crate panic_halt;
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use core::arch::asm;
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use cortex_m_rt::{entry, exception, ExceptionFrame};
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// This defines both `HardFault` and `_HardFault`. Both should have
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// link_section attributes placing them at the end of the .text section,
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// close to each other. If one of them is missing that attribute, they
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// will end up separated by `foo`, which will make the linker fail.
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#[exception(trampoline = true)]
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unsafe fn HardFault(_ef: &ExceptionFrame) -> ! {
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loop {}
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}
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#[entry]
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fn foo() -> ! {
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unsafe {
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// 2kB of NOP instructions to make the function artificially larger
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asm!(".fill 1024,2,0xbf00",);
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}
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loop {}
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}
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