Refactor

src/timer.rs

@@ -4,13 +4,25 @@ fn read_clo() -> u32 {
     unsafe { return core::ptr::read_volatile(TIMER_CLO as *const u32) }
 }
 
-pub fn sleep(microseconds: u32) {
+/// Sleep for `us` microseconds
+pub fn sleep_us(us: u32) {
     let start = read_clo();
-    while read_clo() - start < microseconds {
+    while read_clo() - start < us {
         unsafe { core::arch::asm!("nop") }
     }
 }
 
+/// Sleep for `ms` milliseconds
+pub fn sleep_ms(ms: u32) {
+    sleep_us(ms * 1000);
+}
+
+/// Sleep for `s` seconds
+pub fn sleep_s(s: u32) {
+    sleep_us(s * 1000);
+}
+
+/// Wait for `count` operations to pass
 pub fn delay_nops(count: u32) {
     for _ in 0..count {
         unsafe { core::arch::asm!("nop") }