45 lines
1.2 KiB
Rust
45 lines
1.2 KiB
Rust
//! Sends "Hello, world!" through the ITM port 0
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//!
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//! **IMPORTANT** Not all Cortex-M chips support ITM. You'll have to connect the
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//! microcontroller's SWO pin to the SWD interface. Note that some development
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//! boards don't provide this option.
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//!
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//! ITM is much faster than semihosting. Like 4 orders of magnitude or so.
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//!
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//! You'll need [`itmdump`] to receive the message on the host plus you'll need
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//! to uncomment the `monitor` commands in the `.gdbinit` file.
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//!
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//! [`itmdump`]: https://docs.rs/itm/0.1.1/itm/
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//!
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//! ---
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//!
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//! ```
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//!
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//! #![feature(used)]
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//! #![no_std]
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//!
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//! #[macro_use]
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//! extern crate cortex_m;
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//! extern crate cortex_m_rt;
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//!
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//! use cortex_m::{asm, interrupt, peripheral};
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//!
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//! fn main() {
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//! interrupt::free(|cs| {
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//! let itm = peripheral::ITM.borrow(&cs);
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//!
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//! iprintln!(&itm.stim[0], "Hello, world!");
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//! });
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//! }
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//!
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//! // As we are not using interrupts, we just register a dummy catch all handler
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//! #[link_section = ".vector_table.interrupts"]
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//! #[used]
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//! static INTERRUPTS: [extern "C" fn(); 240] = [default_handler; 240];
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//!
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//! extern "C" fn default_handler() {
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//! asm::bkpt();
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//! }
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//! ```
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// Auto-generated. Do not modify.
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