Merge pull request #98 from xoviat/stm32

consolidate exti mod

5 files changed, 295 insertions, 323 deletions

diff --git a/embassy-stm32f4/src/exti.rs b/embassy-stm32/src/exti.rs
index 154ca45c1..a00079450 100644
--- a/embassy-stm32f4/src/exti.rs
+++ b/embassy-stm32/src/exti.rs
@@ -3,35 +3,33 @@ use core::mem;
 use core::pin::Pin;
 use cortex_m;
 
-use embassy::traits::gpio::{WaitForFallingEdge, WaitForRisingEdge};
+use crate::hal::gpio;
+
+use embassy::traits::gpio::{
+    WaitForAnyEdge, WaitForFallingEdge, WaitForHigh, WaitForLow, WaitForRisingEdge,
+};
 use embassy::util::InterruptFuture;
 
-use crate::hal::gpio;
-use crate::hal::gpio::Edge;
-use crate::hal::syscfg::SysCfg;
-use crate::pac::EXTI;
 use embedded_hal::digital::v2 as digital;
 
 use crate::interrupt;
 
-pub struct ExtiPin<T: gpio::ExtiPin + WithInterrupt> {
+pub struct ExtiPin<T: Instance> {
     pin: T,
     interrupt: T::Interrupt,
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt> ExtiPin<T> {
+impl<T: Instance> ExtiPin<T> {
     pub fn new(mut pin: T, interrupt: T::Interrupt) -> Self {
-        let mut syscfg: SysCfg = unsafe { mem::transmute(()) };
-
         cortex_m::interrupt::free(|_| {
-            pin.make_interrupt_source(&mut syscfg);
+            pin.make_source();
         });
 
         Self { pin, interrupt }
     }
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt + digital::OutputPin> digital::OutputPin for ExtiPin<T> {
+impl<T: Instance + digital::OutputPin> digital::OutputPin for ExtiPin<T> {
     type Error = T::Error;
 
     fn set_low(&mut self) -> Result<(), Self::Error> {
@@ -43,9 +41,7 @@ impl<T: gpio::ExtiPin + WithInterrupt + digital::OutputPin> digital::OutputPin f
     }
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt + digital::StatefulOutputPin> digital::StatefulOutputPin
-    for ExtiPin<T>
-{
+impl<T: Instance + digital::StatefulOutputPin> digital::StatefulOutputPin for ExtiPin<T> {
     fn is_set_low(&self) -> Result<bool, Self::Error> {
         self.pin.is_set_low()
     }
@@ -55,9 +51,7 @@ impl<T: gpio::ExtiPin + WithInterrupt + digital::StatefulOutputPin> digital::Sta
     }
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt + digital::ToggleableOutputPin> digital::ToggleableOutputPin
-    for ExtiPin<T>
-{
+impl<T: Instance + digital::ToggleableOutputPin> digital::ToggleableOutputPin for ExtiPin<T> {
     type Error = T::Error;
 
     fn toggle(&mut self) -> Result<(), Self::Error> {
@@ -65,7 +59,7 @@ impl<T: gpio::ExtiPin + WithInterrupt + digital::ToggleableOutputPin> digital::T
     }
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt + digital::InputPin> digital::InputPin for ExtiPin<T> {
+impl<T: Instance + digital::InputPin> digital::InputPin for ExtiPin<T> {
     type Error = T::Error;
 
     fn is_high(&self) -> Result<bool, Self::Error> {
@@ -77,71 +71,129 @@ impl<T: gpio::ExtiPin + WithInterrupt + digital::InputPin> digital::InputPin for
     }
 }
 
-/*
-    Irq Handler Description
-    EXTI0_IRQn  EXTI0_IRQHandler        Handler for pins connected to line 0
-    EXTI1_IRQn  EXTI1_IRQHandler        Handler for pins connected to line 1
-    EXTI2_IRQn  EXTI2_IRQHandler        Handler for pins connected to line 2
-    EXTI3_IRQn  EXTI3_IRQHandler        Handler for pins connected to line 3
-    EXTI4_IRQn  EXTI4_IRQHandler        Handler for pins connected to line 4
-    EXTI9_5_IRQn        EXTI9_5_IRQHandler      Handler for pins connected to line 5 to 9
-    EXTI15_10_IRQn      EXTI15_10_IRQHandler    Handler for pins connected to line 10 to 15
-*/
-
-impl<T: gpio::ExtiPin + WithInterrupt + 'static> WaitForRisingEdge for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_rising_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+impl<T: Instance + digital::InputPin + 'static> ExtiPin<T> {
+    fn wait_for_state<'a>(self: Pin<&'a mut Self>, state: bool) -> impl Future<Output = ()> + 'a {
         let s = unsafe { self.get_unchecked_mut() };
 
-        s.pin.clear_interrupt_pending_bit();
+        s.pin.clear_pending_bit();
         async move {
             let fut = InterruptFuture::new(&mut s.interrupt);
             let pin = &mut s.pin;
             cortex_m::interrupt::free(|_| {
-                let mut exti: EXTI = unsafe { mem::transmute(()) };
-
-                pin.trigger_on_edge(&mut exti, Edge::RISING);
-                pin.enable_interrupt(&mut exti);
+                pin.trigger_edge(if state {
+                    EdgeOption::Rising
+                } else {
+                    EdgeOption::Falling
+                });
             });
+
+            if (state && s.pin.is_high().unwrap_or(false))
+                || (!state && s.pin.is_low().unwrap_or(false))
+            {
+                return;
+            }
+
             fut.await;
 
-            s.pin.clear_interrupt_pending_bit();
+            s.pin.clear_pending_bit();
         }
     }
 }
 
-impl<T: gpio::ExtiPin + WithInterrupt + 'static> WaitForFallingEdge for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_falling_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+impl<T: Instance + 'static> ExtiPin<T> {
+    fn wait_for_edge<'a>(
+        self: Pin<&'a mut Self>,
+        state: EdgeOption,
+    ) -> impl Future<Output = ()> + 'a {
         let s = unsafe { self.get_unchecked_mut() };
 
-        s.pin.clear_interrupt_pending_bit();
+        s.pin.clear_pending_bit();
         async move {
             let fut = InterruptFuture::new(&mut s.interrupt);
             let pin = &mut s.pin;
             cortex_m::interrupt::free(|_| {
-                let mut exti: EXTI = unsafe { mem::transmute(()) };
-
-                pin.trigger_on_edge(&mut exti, Edge::FALLING);
-                pin.enable_interrupt(&mut exti);
+                pin.trigger_edge(state);
             });
+
             fut.await;
 
-            s.pin.clear_interrupt_pending_bit();
+            s.pin.clear_pending_bit();
         }
     }
 }
 
+impl<T: Instance + digital::InputPin + 'static> WaitForHigh for ExtiPin<T> {
+    type Future<'a> = impl Future<Output = ()> + 'a;
+
+    fn wait_for_high<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+        self.wait_for_state(true)
+    }
+}
+
+impl<T: Instance + digital::InputPin + 'static> WaitForLow for ExtiPin<T> {
+    type Future<'a> = impl Future<Output = ()> + 'a;
+
+    fn wait_for_low<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+        self.wait_for_state(false)
+    }
+}
+
+/*
+    Irq Handler Description
+    EXTI0_IRQn  EXTI0_IRQHandler        Handler for pins connected to line 0
+    EXTI1_IRQn  EXTI1_IRQHandler        Handler for pins connected to line 1
+    EXTI2_IRQn  EXTI2_IRQHandler        Handler for pins connected to line 2
+    EXTI3_IRQn  EXTI3_IRQHandler        Handler for pins connected to line 3
+    EXTI4_IRQn  EXTI4_IRQHandler        Handler for pins connected to line 4
+    EXTI9_5_IRQn        EXTI9_5_IRQHandler      Handler for pins connected to line 5 to 9
+    EXTI15_10_IRQn      EXTI15_10_IRQHandler    Handler for pins connected to line 10 to 15
+*/
+
+impl<T: Instance + 'static> WaitForRisingEdge for ExtiPin<T> {
+    type Future<'a> = impl Future<Output = ()> + 'a;
+
+    fn wait_for_rising_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+        self.wait_for_edge(EdgeOption::Rising)
+    }
+}
+
+impl<T: Instance + 'static> WaitForFallingEdge for ExtiPin<T> {
+    type Future<'a> = impl Future<Output = ()> + 'a;
+
+    fn wait_for_falling_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+        self.wait_for_edge(EdgeOption::Falling)
+    }
+}
+
+impl<T: Instance + 'static> WaitForAnyEdge for ExtiPin<T> {
+    type Future<'a> = impl Future<Output = ()> + 'a;
+
+    fn wait_for_any_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
+        self.wait_for_edge(EdgeOption::RisingFalling)
+    }
+}
+
 mod private {
     pub trait Sealed {}
 }
 
+#[derive(Copy, Clone)]
+pub enum EdgeOption {
+    Rising,
+    Falling,
+    RisingFalling,
+}
+
 pub trait WithInterrupt: private::Sealed {
     type Interrupt: interrupt::Interrupt;
 }
 
+pub trait Instance: WithInterrupt {
+    fn make_source(&mut self);
+    fn clear_pending_bit(&mut self);
+    fn trigger_edge(&mut self, edge: EdgeOption);
+}
+
 macro_rules! exti {
     ($set:ident, [
         $($INT:ident => $pin:ident,)+
@@ -151,8 +203,90 @@ macro_rules! exti {
             impl<T> WithInterrupt for gpio::$set::$pin<T> {
                 type Interrupt = interrupt::$INT;
             }
-        )+
 
+            #[cfg(any(
+                feature = "stm32f401",
+                feature = "stm32f405",
+                feature = "stm32f407",
+                feature = "stm32f410",
+                feature = "stm32f411",
+                feature = "stm32f412",
+                feature = "stm32f413",
+                feature = "stm32f415",
+                feature = "stm32f417",
+                feature = "stm32f423",
+                feature = "stm32f427",
+                feature = "stm32f429",
+                feature = "stm32f437",
+                feature = "stm32f439",
+                feature = "stm32f446",
+                feature = "stm32f469",
+                feature = "stm32f479",
+            ))]
+            impl<T> Instance for gpio::$set::$pin<gpio::Input<T>> {
+                fn make_source(&mut self) {
+                    use crate::hal::{gpio::Edge, gpio::ExtiPin, syscfg::SysCfg};
+                    use crate::pac::EXTI;
+                    let mut syscfg: SysCfg = unsafe { mem::transmute(()) };
+                    self.make_interrupt_source(&mut syscfg);
+                }
+
+                fn clear_pending_bit(&mut self) {
+                    use crate::hal::{gpio::Edge, gpio::ExtiPin, syscfg::SysCfg};
+
+                    self.clear_interrupt_pending_bit();
+                }
+
+                fn trigger_edge(&mut self, edge: EdgeOption) {
+                    use crate::hal::{gpio::Edge, gpio::ExtiPin, syscfg::SysCfg};
+                    use crate::pac::EXTI;
+                    let mut exti: EXTI = unsafe { mem::transmute(()) };
+                    let edge = match edge {
+                        EdgeOption::Falling => Edge::FALLING,
+                        EdgeOption::Rising => Edge::RISING,
+                        EdgeOption::RisingFalling => Edge::RISING_FALLING,
+                    };
+                    self.trigger_on_edge(&mut exti, edge);
+                    self.enable_interrupt(&mut exti);
+                }
+            }
+
+            #[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+            impl<T> Instance for gpio::$set::$pin<T> {
+                fn make_source(&mut self) {}
+
+                fn clear_pending_bit(&mut self) {
+                    use crate::hal::{
+                        exti::{Exti, ExtiLine, GpioLine, TriggerEdge},
+                        syscfg::SYSCFG,
+                    };
+
+                    Exti::unpend(GpioLine::from_raw_line(self.pin_number()).unwrap());
+                }
+
+                fn trigger_edge(&mut self, edge: EdgeOption) {
+                    use crate::hal::{
+                        exti::{Exti, ExtiLine, GpioLine, TriggerEdge},
+                        syscfg::SYSCFG,
+                    };
+
+                    use crate::pac::EXTI;
+
+                    let edge = match edge {
+                        EdgeOption::Falling => TriggerEdge::Falling,
+                        EdgeOption::Rising => TriggerEdge::Rising,
+                        EdgeOption::RisingFalling => TriggerEdge::Both,
+                    };
+
+                    let exti: EXTI = unsafe { mem::transmute(()) };
+                    let mut exti = Exti::new(exti);
+                    let port = self.port();
+                    let mut syscfg: SYSCFG = unsafe { mem::transmute(()) };
+                    let line = GpioLine::from_raw_line(self.pin_number()).unwrap();
+                    exti.listen_gpio(&mut syscfg, port, line, edge);
+                }
+            }
+        )+
     };
 }
 
@@ -533,3 +667,111 @@ exti!(gpiok, [
     EXTI9_5 => PK6,
     EXTI9_5 => PK7,
 ]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpioa, [
+    EXTI0_1 => PA0,
+    EXTI0_1 => PA1,
+    EXTI2_3 => PA2,
+    EXTI2_3 => PA3,
+    EXTI4_15 => PA4,
+    EXTI4_15 => PA5,
+    EXTI4_15 => PA6,
+    EXTI4_15 => PA7,
+    EXTI4_15 => PA8,
+    EXTI4_15 => PA9,
+    EXTI4_15 => PA10,
+    EXTI4_15 => PA11,
+    EXTI4_15 => PA12,
+    EXTI4_15 => PA13,
+    EXTI4_15 => PA14,
+    EXTI4_15 => PA15,
+]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpiob, [
+    EXTI0_1 => PB0,
+    EXTI0_1 => PB1,
+    EXTI2_3 => PB2,
+    EXTI2_3 => PB3,
+    EXTI4_15 => PB4,
+    EXTI4_15 => PB5,
+    EXTI4_15 => PB6,
+    EXTI4_15 => PB7,
+    EXTI4_15 => PB8,
+    EXTI4_15 => PB9,
+    EXTI4_15 => PB10,
+    EXTI4_15 => PB11,
+    EXTI4_15 => PB12,
+    EXTI4_15 => PB13,
+    EXTI4_15 => PB14,
+    EXTI4_15 => PB15,
+]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpioc, [
+    EXTI0_1 => PC0,
+    EXTI0_1 => PC1,
+    EXTI2_3 => PC2,
+    EXTI2_3 => PC3,
+    EXTI4_15 => PC4,
+    EXTI4_15 => PC5,
+    EXTI4_15 => PC6,
+    EXTI4_15 => PC7,
+    EXTI4_15 => PC8,
+    EXTI4_15 => PC9,
+    EXTI4_15 => PC10,
+    EXTI4_15 => PC11,
+    EXTI4_15 => PC12,
+    EXTI4_15 => PC13,
+    EXTI4_15 => PC14,
+    EXTI4_15 => PC15,
+]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpiod, [
+    EXTI0_1 => PD0,
+    EXTI0_1 => PD1,
+    EXTI2_3 => PD2,
+    EXTI2_3 => PD3,
+    EXTI4_15 => PD4,
+    EXTI4_15 => PD5,
+    EXTI4_15 => PD6,
+    EXTI4_15 => PD7,
+    EXTI4_15 => PD8,
+    EXTI4_15 => PD9,
+    EXTI4_15 => PD10,
+    EXTI4_15 => PD11,
+    EXTI4_15 => PD12,
+    EXTI4_15 => PD13,
+    EXTI4_15 => PD14,
+    EXTI4_15 => PD15,
+]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpioe, [
+    EXTI0_1 => PE0,
+    EXTI0_1 => PE1,
+    EXTI2_3 => PE2,
+    EXTI2_3 => PE3,
+    EXTI4_15 => PE4,
+    EXTI4_15 => PE5,
+    EXTI4_15 => PE6,
+    EXTI4_15 => PE7,
+    EXTI4_15 => PE8,
+    EXTI4_15 => PE9,
+    EXTI4_15 => PE10,
+    EXTI4_15 => PE11,
+    EXTI4_15 => PE12,
+    EXTI4_15 => PE13,
+    EXTI4_15 => PE14,
+    EXTI4_15 => PE15,
+]);
+
+#[cfg(any(feature = "stm32l0x1", feature = "stm32l0x2", feature = "stm32l0x3",))]
+exti!(gpioh, [
+    EXTI0_1 => PH0,
+    EXTI0_1 => PH1,
+    EXTI4_15 => PH9,
+    EXTI4_15 => PH10,
+]);
diff --git a/embassy-stm32/src/lib.rs b/embassy-stm32/src/lib.rs
index a1f40b2c7..954067f32 100644
--- a/embassy-stm32/src/lib.rs
+++ b/embassy-stm32/src/lib.rs
@@ -32,4 +32,5 @@ pub use {stm32l0xx_hal as hal, stm32l0xx_hal::pac};
 
 pub mod fmt;
 
+pub mod exti;
 pub mod interrupt;
diff --git a/embassy-stm32f4/src/lib.rs b/embassy-stm32f4/src/lib.rs
index 0d490525c..bdd4d0fda 100644
--- a/embassy-stm32f4/src/lib.rs
+++ b/embassy-stm32f4/src/lib.rs
@@ -307,11 +307,10 @@ compile_error!(
     "Multile chip features activated. You must activate exactly one of the following features: "
 );
 
-pub use embassy_stm32::{fmt, hal, interrupt, pac};
+pub use embassy_stm32::{exti, fmt, hal, interrupt, pac};
 
 #[cfg(not(any(feature = "stm32f401", feature = "stm32f410", feature = "stm32f411",)))]
 pub mod can;
-pub mod exti;
 #[cfg(not(feature = "stm32f410"))]
 pub mod qei;
 pub mod rtc;
diff --git a/embassy-stm32l0/src/exti.rs b/embassy-stm32l0/src/exti.rs
deleted file mode 100644
index f50c3ae8e..000000000
--- a/embassy-stm32l0/src/exti.rs
+++ /dev/null
@@ -1,268 +0,0 @@
-use core::future::Future;
-use core::mem;
-use core::pin::Pin;
-
-use embassy::traits::gpio::{
-    WaitForAnyEdge, WaitForFallingEdge, WaitForHigh, WaitForLow, WaitForRisingEdge,
-};
-use embassy::util::InterruptFuture;
-
-use crate::hal::{
-    exti::{Exti, ExtiLine, GpioLine, TriggerEdge},
-    gpio,
-    syscfg::SYSCFG,
-};
-use crate::interrupt;
-use crate::pac::EXTI;
-use embedded_hal::digital::v2::InputPin;
-
-pub struct ExtiPin<T: PinWithInterrupt> {
-    pin: T,
-    interrupt: T::Interrupt,
-}
-
-impl<T: PinWithInterrupt + 'static> ExtiPin<T> {
-    pub fn new(pin: T, interrupt: T::Interrupt) -> ExtiPin<T> {
-        ExtiPin { pin, interrupt }
-    }
-
-    fn wait_for_edge<'a>(
-        self: Pin<&'a mut Self>,
-        edge: TriggerEdge,
-    ) -> impl Future<Output = ()> + 'a {
-        let line = self.pin.line();
-        let s = unsafe { self.get_unchecked_mut() };
-
-        Exti::unpend(line);
-
-        async move {
-            let exti: EXTI = unsafe { mem::transmute(()) };
-            let mut exti = Exti::new(exti);
-
-            let fut = InterruptFuture::new(&mut s.interrupt);
-
-            let port = s.pin.port();
-            cortex_m::interrupt::free(|_| {
-                let mut syscfg: SYSCFG = unsafe { mem::transmute(()) };
-                exti.listen_gpio(&mut syscfg, port, line, edge);
-            });
-
-            fut.await;
-
-            Exti::unpend(line);
-        }
-    }
-}
-
-impl<T: InputPin + PinWithInterrupt + 'static> ExtiPin<T> {
-    fn wait_for_state<'a>(self: Pin<&'a mut Self>, state: bool) -> impl Future<Output = ()> + 'a {
-        let line = self.pin.line();
-        let s = unsafe { self.get_unchecked_mut() };
-
-        Exti::unpend(line);
-
-        async move {
-            let exti: EXTI = unsafe { mem::transmute(()) };
-            let mut exti = Exti::new(exti);
-
-            let fut = InterruptFuture::new(&mut s.interrupt);
-
-            let port = s.pin.port();
-            cortex_m::interrupt::free(|_| {
-                let mut syscfg: SYSCFG = unsafe { mem::transmute(()) };
-                let edge = if state {
-                    TriggerEdge::Rising
-                } else {
-                    TriggerEdge::Falling
-                };
-                exti.listen_gpio(&mut syscfg, port, line, edge);
-            });
-
-            let pin_has_state = if state {
-                s.pin.is_high()
-            } else {
-                s.pin.is_low()
-            }
-            .unwrap_or(false);
-            if pin_has_state {
-                return ();
-            }
-
-            fut.await;
-
-            Exti::unpend(line);
-        }
-    }
-}
-
-impl<T: PinWithInterrupt + 'static> WaitForRisingEdge for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_rising_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
-        self.wait_for_edge(TriggerEdge::Rising)
-    }
-}
-
-impl<T: PinWithInterrupt + 'static> WaitForFallingEdge for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_falling_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
-        self.wait_for_edge(TriggerEdge::Falling)
-    }
-}
-
-impl<T: PinWithInterrupt + 'static> WaitForAnyEdge for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_any_edge<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
-        self.wait_for_edge(TriggerEdge::Both)
-    }
-}
-
-impl<T: InputPin + PinWithInterrupt + 'static> WaitForHigh for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_high<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
-        self.wait_for_state(true)
-    }
-}
-
-impl<T: InputPin + PinWithInterrupt + 'static> WaitForLow for ExtiPin<T> {
-    type Future<'a> = impl Future<Output = ()> + 'a;
-
-    fn wait_for_low<'a>(self: Pin<&'a mut Self>) -> Self::Future<'a> {
-        self.wait_for_state(false)
-    }
-}
-
-mod private {
-    pub trait Sealed {}
-}
-
-pub trait PinWithInterrupt: private::Sealed {
-    type Interrupt: interrupt::Interrupt;
-    fn port(&self) -> gpio::Port;
-    fn line(&self) -> GpioLine;
-}
-
-macro_rules! exti {
-    ($set:ident, [
-        $($INT:ident => $pin:ident,)+
-    ]) => {
-        $(
-            impl<T> private::Sealed for gpio::$set::$pin<T> {}
-            impl<T> PinWithInterrupt for gpio::$set::$pin<T> {
-                type Interrupt = interrupt::$INT;
-                fn port(&self) -> gpio::Port {
-                    self.port()
-                }
-                fn line(&self) -> GpioLine {
-                    GpioLine::from_raw_line(self.pin_number()).unwrap()
-                }
-            }
-        )+
-
-    };
-}
-
-exti!(gpioa, [
-    EXTI0_1 => PA0,
-    EXTI0_1 => PA1,
-    EXTI2_3 => PA2,
-    EXTI2_3 => PA3,
-    EXTI4_15 => PA4,
-    EXTI4_15 => PA5,
-    EXTI4_15 => PA6,
-    EXTI4_15 => PA7,
-    EXTI4_15 => PA8,
-    EXTI4_15 => PA9,
-    EXTI4_15 => PA10,
-    EXTI4_15 => PA11,
-    EXTI4_15 => PA12,
-    EXTI4_15 => PA13,
-    EXTI4_15 => PA14,
-    EXTI4_15 => PA15,
-]);
-
-exti!(gpiob, [
-    EXTI0_1 => PB0,
-    EXTI0_1 => PB1,
-    EXTI2_3 => PB2,
-    EXTI2_3 => PB3,
-    EXTI4_15 => PB4,
-    EXTI4_15 => PB5,
-    EXTI4_15 => PB6,
-    EXTI4_15 => PB7,
-    EXTI4_15 => PB8,
-    EXTI4_15 => PB9,
-    EXTI4_15 => PB10,
-    EXTI4_15 => PB11,
-    EXTI4_15 => PB12,
-    EXTI4_15 => PB13,
-    EXTI4_15 => PB14,
-    EXTI4_15 => PB15,
-]);
-
-exti!(gpioc, [
-    EXTI0_1 => PC0,
-    EXTI0_1 => PC1,
-    EXTI2_3 => PC2,
-    EXTI2_3 => PC3,
-    EXTI4_15 => PC4,
-    EXTI4_15 => PC5,
-    EXTI4_15 => PC6,
-    EXTI4_15 => PC7,
-    EXTI4_15 => PC8,
-    EXTI4_15 => PC9,
-    EXTI4_15 => PC10,
-    EXTI4_15 => PC11,
-    EXTI4_15 => PC12,
-    EXTI4_15 => PC13,
-    EXTI4_15 => PC14,
-    EXTI4_15 => PC15,
-]);
-
-exti!(gpiod, [
-    EXTI0_1 => PD0,
-    EXTI0_1 => PD1,
-    EXTI2_3 => PD2,
-    EXTI2_3 => PD3,
-    EXTI4_15 => PD4,
-    EXTI4_15 => PD5,
-    EXTI4_15 => PD6,
-    EXTI4_15 => PD7,
-    EXTI4_15 => PD8,
-    EXTI4_15 => PD9,
-    EXTI4_15 => PD10,
-    EXTI4_15 => PD11,
-    EXTI4_15 => PD12,
-    EXTI4_15 => PD13,
-    EXTI4_15 => PD14,
-    EXTI4_15 => PD15,
-]);
-
-exti!(gpioe, [
-    EXTI0_1 => PE0,
-    EXTI0_1 => PE1,
-    EXTI2_3 => PE2,
-    EXTI2_3 => PE3,
-    EXTI4_15 => PE4,
-    EXTI4_15 => PE5,
-    EXTI4_15 => PE6,
-    EXTI4_15 => PE7,
-    EXTI4_15 => PE8,
-    EXTI4_15 => PE9,
-    EXTI4_15 => PE10,
-    EXTI4_15 => PE11,
-    EXTI4_15 => PE12,
-    EXTI4_15 => PE13,
-    EXTI4_15 => PE14,
-    EXTI4_15 => PE15,
-]);
-
-exti!(gpioh, [
-    EXTI0_1 => PH0,
-    EXTI0_1 => PH1,
-    EXTI4_15 => PH9,
-    EXTI4_15 => PH10,
-]);
diff --git a/embassy-stm32l0/src/lib.rs b/embassy-stm32l0/src/lib.rs
index e80fe6cb4..a684c4e3e 100644
--- a/embassy-stm32l0/src/lib.rs
+++ b/embassy-stm32l0/src/lib.rs
@@ -19,6 +19,4 @@ compile_error!(
     "Multile chip features activated. You must activate exactly one of the following features: "
 );
 
-pub use embassy_stm32::{fmt, hal, interrupt, pac};
-
-pub mod exti;
+pub use embassy_stm32::{exti, fmt, hal, interrupt, pac};