Memory IO

src/main.rs

@@ -1,7 +1,7 @@
 #![no_std]
 #![no_main]
 
-use core::{panic::PanicInfo, ptr::{read_volatile, write_volatile}};
+use core::panic::PanicInfo;
 use riscv_rt::entry;
 
 #[panic_handler]
@@ -14,22 +14,12 @@ static TEXT: &str = "lmao YEET";
 
 #[entry]
 fn main() -> ! {
+    let output = 0x2000_0000 as *mut u32;
+    let mut n: u32 = 6814;
     loop {
         unsafe {
-            let ptr32 = 0x8000_0000 as *mut u32;
+            output.write_volatile(n);
-            let ptr16 = 0x8000_0000 as *mut u16;
-            let ptr8 = 0x8000_0000 as *mut u8;
-
-            write_volatile(ptr32, 0xffeeddcc);
-            write_volatile(ptr8.offset(0), 0x00);
-            write_volatile(ptr8.offset(1), 0x01);
-            write_volatile(ptr8.offset(2), 0x02);
-            write_volatile(ptr8.offset(3), 0x03);
-            let _ = read_volatile(ptr32);
-
-            write_volatile(ptr16.offset(1), 0x55);
-            write_volatile(ptr16.offset(0), 0x44);
-            let _ = read_volatile(ptr32);
         }
+        n += 1;
     }
 }