add debounce

src/counter.rs

@@ -1,5 +1,5 @@
 use crossbeam::atomic::AtomicCell;
-use std::sync::Arc;
+use std::{sync::Arc, time::Duration};
 use rppal::gpio::{Gpio, Trigger};
 use std::time::{SystemTime, UNIX_EPOCH};
 
@@ -8,7 +8,7 @@ pub fn pulse_counter(pulses: Arc<AtomicCell<u32>>, last_time: Arc<AtomicCell<Opt
     let mut pulse_gpio = gpio.get(23)
                          .expect("failt to get gpio pin")
                          .into_input_pullup();
-    pulse_gpio.set_interrupt(Trigger::FallingEdge, None)
+    pulse_gpio.set_interrupt(Trigger::FallingEdge, Some(Duration::from_millis(100)))
         .expect("failt to set inerupt");
 
     loop {