Use thread::sleep for better efficency

README.adoc

@@ -1,7 +1,9 @@
-# aw-lights
+= aw-lights
 
+== Setup
+
+[source,bash]
 ----
-# Install packages
 xbps-install fake-hwclock
 ln -s /etc/sv/fake-hwclock/ /var/service/
 
@@ -11,3 +13,19 @@ echo 'dtparam=spi=on' >>/boot/config.txt
 # Allow big buf for SPI
 echo 'options spidev bufsiz=65536' > /etc/modprobe.d/spidev.conf
 ----
+
+Set CPU clock
+
+* RPI3
++
+[title='/boot/config.txt']
+----
+core_freq=250
+----
+* RPI4
++
+[title='/boot/config.txt']
+----
+core_freq=500
+core_freq_min=500
+----

src/strip.rs

@@ -180,11 +180,15 @@ impl LedStrip {
                 process::exit(0);
             }
 
-            loop {
-                if Instant::now() >= target_time {
-                    break;
-                }
-            }
+            // Wait out the rest of the time
+            thread::sleep(target_time.saturating_duration_since(Instant::now()));
+
+            // Required if clock is not set up properly
+            // loop {
+            //     if Instant::now() >= target_time {
+            //         break;
+            //     }
+            // }
         }
     }
 }