diff --git a/embassy-stm32/src/gpio.rs b/embassy-stm32/src/gpio.rs
index c3ae96f3..fd0bdb7b 100644
--- a/embassy-stm32/src/gpio.rs
+++ b/embassy-stm32/src/gpio.rs
@@ -23,7 +23,7 @@ impl<'d, T: Pin> Flex<'d, T> {
     /// The pin remains disconnected. The initial output level is unspecified, but can be changed
     /// before the pin is put into output mode.
     ///
-    #[inline] 
+    #[inline]
     pub fn new(pin: impl Unborrow<Target = T> + 'd) -> Self {
         unborrow!(pin);
         // Pin will be in disconnected state.
@@ -32,9 +32,9 @@ impl<'d, T: Pin> Flex<'d, T> {
             phantom: PhantomData,
         }
     }
-    
+
     /// Put the pin into input mode.
-    #[inline] 
+    #[inline]
     pub fn set_as_input(&mut self, pull: Pull) {
         critical_section::with(|_| unsafe {
             let r = self.pin.block();
@@ -74,7 +74,6 @@ impl<'d, T: Pin> Flex<'d, T> {
     /// at a specific level, call `set_high`/`set_low` on the pin first.
     #[inline]
     pub fn set_as_output(&mut self, speed: Speed) {
-
         critical_section::with(|_| unsafe {
             let r = self.pin.block();
             let n = self.pin.pin() as usize;
@@ -95,7 +94,7 @@ impl<'d, T: Pin> Flex<'d, T> {
             }
         });
     }
-    
+
     /// Put the pin into input + output mode.
     ///
     /// This is commonly used for "open drain" mode.
@@ -106,7 +105,7 @@ impl<'d, T: Pin> Flex<'d, T> {
     /// The pin level will be whatever was set before (or low by default). If you want it to begin
     /// at a specific level, call `set_high`/`set_low` on the pin first.
     #[inline]
-    pub fn set_as_input_output(&mut self,speed: Speed, pull : Pull) {
+    pub fn set_as_input_output(&mut self, speed: Speed, pull: Pull) {
         critical_section::with(|_| unsafe {
             let r = self.pin.block();
             let n = self.pin.pin() as usize;
@@ -164,7 +163,7 @@ impl<'d, T: Pin> Flex<'d, T> {
     pub fn set_low(&mut self) {
         self.pin.set_low();
     }
-    
+
     /// Toggle pin output
     #[inline]
     pub fn toggle(&mut self) {
@@ -262,7 +261,7 @@ impl From<Speed> for vals::Ospeedr {
 
 /// GPIO input driver.
 pub struct Input<'d, T: Pin> {
-    pub(crate) pin: Flex<'d, T>
+    pub(crate) pin: Flex<'d, T>,
 }
 
 impl<'d, T: Pin> Input<'d, T> {
@@ -340,10 +339,9 @@ impl<'d, T: Pin> Output<'d, T> {
     }
 }
 
-
 /// GPIO output open-drain driver.
 pub struct OutputOpenDrain<'d, T: Pin> {
-    pub(crate) pin: Flex<'d, T>
+    pub(crate) pin: Flex<'d, T>,
 }
 
 impl<'d, T: Pin> OutputOpenDrain<'d, T> {
@@ -925,10 +923,9 @@ mod eh1 {
             Ok(self.is_set_low())
         }
     }
-
 }
 
 #[cfg(feature = "unstable-pac")]
 pub mod low_level {
     pub use super::sealed::*;
-}
\ No newline at end of file
+}
diff --git a/tests/stm32/src/bin/gpio.rs b/tests/stm32/src/bin/gpio.rs
index a26daab4..37cfe7cf 100644
--- a/tests/stm32/src/bin/gpio.rs
+++ b/tests/stm32/src/bin/gpio.rs
@@ -6,7 +6,7 @@
 mod example_common;
 use defmt::assert;
 use embassy::executor::Spawner;
-use embassy_stm32::gpio::{Input, Level, Output, OutputOpenDrain, Flex, Pull, Speed};
+use embassy_stm32::gpio::{Flex, Input, Level, Output, OutputOpenDrain, Pull, Speed};
 use embassy_stm32::Peripherals;
 use example_common::*;
 
@@ -104,21 +104,21 @@ async fn main(_spawner: Spawner, p: Peripherals) {
     // FLEX
     // Test initial output
     {
-        //Flex pin configured as input  
-        let mut b = Flex::new(&mut b); 
+        //Flex pin configured as input
+        let mut b = Flex::new(&mut b);
         b.set_as_input(Pull::None);
 
         {
-            //Flex pin configured as output  
-            let mut a = Flex::new(&mut a); //Flex pin configured as output  
+            //Flex pin configured as output
+            let mut a = Flex::new(&mut a); //Flex pin configured as output
             a.set_low(); // Pin state must be set before configuring the pin, thus we avoid unknown state
             a.set_as_output(Speed::Low);
             delay();
             assert!(b.is_low());
         }
         {
-            //Flex pin configured as output  
-            let mut a = Flex::new(&mut a); 
+            //Flex pin configured as output
+            let mut a = Flex::new(&mut a);
             a.set_high();
             a.set_as_output(Speed::Low);
 
@@ -129,12 +129,12 @@ async fn main(_spawner: Spawner, p: Peripherals) {
 
     // Test input no pull
     {
-        let mut b = Flex::new(&mut b); 
-        b.set_as_input(Pull::None);        // no pull, the status is undefined
+        let mut b = Flex::new(&mut b);
+        b.set_as_input(Pull::None); // no pull, the status is undefined
 
         let mut a = Flex::new(&mut a);
         a.set_low();
-        a.set_as_output(Speed::Low); 
+        a.set_as_output(Speed::Low);
 
         delay();
         assert!(b.is_low());
@@ -143,11 +143,10 @@ async fn main(_spawner: Spawner, p: Peripherals) {
         assert!(b.is_high());
     }
 
-
     // Test input pulldown
     {
         let mut b = Flex::new(&mut b);
-        b.set_as_input(Pull::Down);      
+        b.set_as_input(Pull::Down);
         delay();
         assert!(b.is_low());
 
@@ -164,7 +163,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
     // Test input pullup
     {
         let mut b = Flex::new(&mut b);
-        b.set_as_input(Pull::Up);        
+        b.set_as_input(Pull::Up);
         delay();
         assert!(b.is_high());
 
@@ -185,7 +184,7 @@ async fn main(_spawner: Spawner, p: Peripherals) {
 
         let mut a = Flex::new(&mut a);
         a.set_low();
-        a.set_as_input_output(Speed::Low, Pull::None);  
+        a.set_as_input_output(Speed::Low, Pull::None);
         delay();
         assert!(b.is_low());
         a.set_high(); // High-Z output