main.rs

#![no_std]
#![no_main]

extern crate panic_halt;
extern crate riscv_rt;

use core::arch::asm;
use riscv_rt::entry;

// simple delay look using inline asm so it doesn't get optimized away
fn delay(cycles: u32) {
    for _ in 0..cycles {
        unsafe {
            asm!("nop");
        }
    }
}

#[entry]
fn main() -> ! {
    //let mut mask = 0x00;
    unsafe {
        *(0xb1000004 as *mut u32) = 1;
        *(0xb1000000 as *mut u32) = 0;
    }
    loop {
        unsafe {
            *(0xb1000000 as *mut u32) +=  1;
        }
        
        // set_leds(mask);
        delay(300000);
    }
}