For this panic: https://github.com/jackwilsdon/rp2040-panic-issue/blob/abb78852f919666208f31186bd870636437030c9/src/main.rs#L74

I get this output from `cargo run -- --catch-hardfault` (which is running `probe-rs run --chip RP2040 --protocol swd --catch-hardfault`):

```
    Finished `dev` profile [optimized + debuginfo] target(s) in 0.02s
     Running `probe-rs run --chip RP2040 --protocol swd target/thumbv6m-none-eabi/debug/rp2040-project-template --catch-hardfault`
      Erasing ✔ 100% [####################]  12.00 KiB @  46.51 KiB/s (took 0s)
  Programming ✔ 100% [####################]  12.00 KiB @  31.14 KiB/s (took 0s)                                                                                                                                                                       Finished in 0.65s
INFO  Program start
└─ rp2040_project_template::__cortex_m_rt_main @ src/main.rs:27  
INFO  on!
└─ rp2040_project_template::__cortex_m_rt_main @ src/main.rs:68  
INFO  off!
└─ rp2040_project_template::__cortex_m_rt_main @ src/main.rs:71  
ERROR panicked at src/main.rs:74:9:
at the disco
└─ panic_probe::print_defmt::print @ /home/jack/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/panic-probe-1.0.0/src/lib.rs:104 
Frame 0: HardFault_ @ 0x10002684
       /home/jack/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-rt-0.7.5/src/lib.rs:1105:5
Frame 1: HardFault @ 0x10000e5c
Frame 2: __udf @ 0x10000e5c inline
       ./asm/lib.rs:48:1
Frame 3: __udf @ 0x0000000010000e5c
       ./asm/lib.rs:51:17
Frame 4: delay_us @ 0x10000d74
       /home/jack/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/cortex-m-0.7.7/src/delay.rs:40:1
Error: CPU halted unexpectedly.
```