flipperzero_rt/
panic_handler.rs

1//! Panic handler for Furi applications.
2//! This will print the panic info to stdout and then trigger a crash.
3
4use core::panic::PanicInfo;
5
6use flipperzero_sys as sys;
7
8#[panic_handler]
9pub fn panic(panic_info: &PanicInfo<'_>) -> ! {
10    // Format: "thread: 'App Name' panicked at 'panic!', panic.rs:5"
11    // Note: Don't use `format!` as it pulls in 10 KiB+ of formatting code.
12    unsafe {
13        let thread_id = sys::furi_thread_get_current_id();
14        let thread_name = if !thread_id.is_null() {
15            sys::furi_thread_get_name(thread_id)
16        } else {
17            c"unknown".as_ptr()
18        };
19
20        sys::__wrap_printf(c"\x1b[0;31mthread: '%s' paniced".as_ptr(), thread_name);
21
22        if let Some(s) = panic_info.message().as_str() {
23            sys::__wrap_printf(c" at '%.*s'".as_ptr(), s.len(), s.as_ptr());
24        }
25
26        if let Some(location) = panic_info.location() {
27            let file = location.file();
28            let line = location.line();
29
30            sys::__wrap_printf(c", %.*s:%u".as_ptr(), file.len(), file.as_ptr(), line);
31        }
32
33        sys::__wrap_printf(c"\x1b[0m\r\n".as_ptr());
34        sys::furi_thread_stdout_flush();
35
36        // Ensure there's plenty of time to fully flush the console
37        sys::furi_delay_ms(500);
38
39        sys::crash!("Rust panic")
40    }
41}
flipperzero_rt/panic_handler.rs

flipperzero_rt/
panic_handler.rs
