use ‘nb’ crate instead of custom type

1 files changed, 9 insertions, 6 deletions

diff --git a/src/blink.rs b/src/blink.rs
index 7c992d7..8e17b21 100644
--- a/src/blink.rs
+++ b/src/blink.rs
@@ -1,13 +1,16 @@
-use crate::{PollResult, led::LED};
-
 use gd32vf103xx_hal::prelude::_embedded_hal_timer_CountDown;
 
+use core::convert::Infallible;
+
 use gd32vf103xx_hal::{
     eclic::{self, EclicExt},
     pac::{self, Interrupt},
     time::Hertz,
     timer,
 };
+use nb;
+
+use crate::led::LED;
 
 enum State {
     WaitForTimer,
@@ -33,21 +36,21 @@ impl Task {
         Self { timer, frequency, led, state: State::ToggleLED }
     }
 
-    pub fn poll(&mut self) -> PollResult {
+    pub fn poll(&mut self) -> nb::Result<(), Infallible> {
         match self.state {
             State::WaitForTimer => {
                 if let Ok(_) = self.timer.wait() {
                     self.state = State::ToggleLED;
-                    PollResult::Ok
+                    Ok(())
                 } else {
-                    PollResult::WouldBlock
+                    Err(nb::Error::WouldBlock)
                 }
             },
             State::ToggleLED => {
                 self.led.toggle();
                 self.timer.start(self.frequency);
                 self.state = State::WaitForTimer;
-                PollResult::WouldBlock
+                Err(nb::Error::WouldBlock)
             }
         }
     }