diff --git a/2sem_sem2/src/lib.rs b/2sem_sem2/src/lib.rs
index 305d2a1..b80f6a6 100644
--- a/2sem_sem2/src/lib.rs
+++ b/2sem_sem2/src/lib.rs
@@ -10,12 +10,20 @@ pub enum Encoding {
     Manchester,
 }
 
-pub const LOGIC_ONE_HIGH: bool = true;
+#[derive(Copy, Clone, PartialEq)]
+pub enum LogicLevel {
+    Low,
+    High,
+}
+
+pub const LOGIC_ZERO: LogicLevel = LogicLevel::Low;
+pub const LOGIC_ONE: LogicLevel = LogicLevel::High;
 
 pub fn level_for_bit(bit: u8) -> bool {
-    (bit != 0) == LOGIC_ONE_HIGH
+    let level = if bit == 0 { LOGIC_ZERO } else { LOGIC_ONE };
+    level == LogicLevel::High
 }
 
 pub fn bit_for_level(level: bool) -> u8 {
-    if level == LOGIC_ONE_HIGH { 1 } else { 0 }
+    if level_for_bit(1) == level { 1 } else { 0 }
 }