From c7f6c19e75b0b884bec3692ace80d4870e05916f Mon Sep 17 00:00:00 2001
From: Paul van Tilburg <paul@luon.net>
Date: Wed, 6 Mar 2019 23:02:05 +0100
Subject: [PATCH] Add a UserButton type alias

---
 src/main.rs | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/main.rs b/src/main.rs
index 4aeaec4..1227f19 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -11,6 +11,7 @@ use hal::prelude::*;
 use rtfm::app;
 
 type Led = hal::gpio::gpiod::PD<Output<PushPull>>;
+type UserButton = hal::gpio::gpioa::PA0<Input<Floating>>;
 
 const PERIOD: u32 = 8_000_000;
 
@@ -21,7 +22,7 @@ pub enum LedDirection {
 
 #[app(device = hal::stm32)]
 const APP: () = {
-    static mut button: hal::gpio::gpioa::PA0<Input<Floating>> = ();
+    static mut button: UserButton = ();
     static mut leds: [Led; 4] = ();
     static mut led_cycle_direction: LedDirection = LedDirection::Clockwise;
     static mut led_index: usize = 0;