cortex-m-quickstart 0.1.1

A template for building applications for ARM Cortex-M microcontrollers
//! Redirecting `panic!` messages
//! The `cortex-m-rt` crate provides two options to redirect `panic!` messages
//! through these two Cargo features:
//! - `panic-over-semihosting`. `panic!` messages will be printed to the OpenOCD
//!    console using semihosting. This is slow.
//! - `panic-over-itm`. `panic!` messages will be send through the ITM port 0.
//!   This is much faster but requires ITM support on the device.
//! If neither of these options is specified then the `panic!` message will be
//! lost. Note that all `panic!`s will trigger a debugger breakpoint.


extern crate cortex_m;
extern crate cortex_m_rt;

use cortex_m::asm;

fn main() {

// As we are not using interrupts, we just register a dummy catch all handler
#[link_section = ".rodata.interrupts"]
static INTERRUPTS: [extern "C" fn(); 240] = [default_handler; 240];

extern "C" fn default_handler() {