From 71e46d7efdcf903a1493f02ef03d1376fc6bc6df Mon Sep 17 00:00:00 2001
From: Dario Nieuwenhuis <dirbaio@dirbaio.net>
Date: Tue, 3 May 2022 00:44:27 +0200
Subject: [PATCH] stm32/gpio: add EH1.0 trait impls.

---
 embassy-stm32/src/gpio.rs | 101 +++++++++++++++++++++++++++++++++++++-
 1 file changed, 100 insertions(+), 1 deletion(-)

diff --git a/embassy-stm32/src/gpio.rs b/embassy-stm32/src/gpio.rs
index 1ac6f395..30f90031 100644
--- a/embassy-stm32/src/gpio.rs
+++ b/embassy-stm32/src/gpio.rs
@@ -3,7 +3,6 @@ use core::convert::Infallible;
 use core::marker::PhantomData;
 use embassy::util::Unborrow;
 use embassy_hal_common::{unborrow, unsafe_impl_unborrow};
-use embedded_hal_02::digital::v2::{InputPin, OutputPin, StatefulOutputPin, ToggleableOutputPin};
 
 use crate::pac;
 use crate::pac::gpio::{self, vals};
@@ -605,6 +604,9 @@ pub(crate) unsafe fn init() {
 
 mod eh02 {
     use super::*;
+    use embedded_hal_02::digital::v2::{
+        InputPin, OutputPin, StatefulOutputPin, ToggleableOutputPin,
+    };
 
     impl<'d, T: Pin> InputPin for Input<'d, T> {
         type Error = Infallible;
@@ -691,6 +693,103 @@ mod eh02 {
     }
 }
 
+#[cfg(feature = "unstable-traits")]
+mod eh1 {
+    use super::*;
+    use embedded_hal_1::digital::blocking::{
+        InputPin, OutputPin, StatefulOutputPin, ToggleableOutputPin,
+    };
+    use embedded_hal_1::digital::ErrorType;
+
+    impl<'d, T: Pin> ErrorType for Input<'d, T> {
+        type Error = Infallible;
+    }
+
+    impl<'d, T: Pin> InputPin for Input<'d, T> {
+        #[inline]
+        fn is_high(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_high())
+        }
+
+        #[inline]
+        fn is_low(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_low())
+        }
+    }
+
+    impl<'d, T: Pin> ErrorType for Output<'d, T> {
+        type Error = Infallible;
+    }
+
+    impl<'d, T: Pin> OutputPin for Output<'d, T> {
+        #[inline]
+        fn set_high(&mut self) -> Result<(), Self::Error> {
+            Ok(self.set_high())
+        }
+
+        #[inline]
+        fn set_low(&mut self) -> Result<(), Self::Error> {
+            Ok(self.set_low())
+        }
+    }
+
+    impl<'d, T: Pin> StatefulOutputPin for Output<'d, T> {
+        #[inline]
+        fn is_set_high(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_set_high())
+        }
+
+        /// Is the output pin set as low?
+        #[inline]
+        fn is_set_low(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_set_low())
+        }
+    }
+
+    impl<'d, T: Pin> ToggleableOutputPin for Output<'d, T> {
+        #[inline]
+        fn toggle(&mut self) -> Result<(), Self::Error> {
+            Ok(self.toggle())
+        }
+    }
+
+    impl<'d, T: Pin> ErrorType for OutputOpenDrain<'d, T> {
+        type Error = Infallible;
+    }
+
+    impl<'d, T: Pin> OutputPin for OutputOpenDrain<'d, T> {
+        #[inline]
+        fn set_high(&mut self) -> Result<(), Self::Error> {
+            Ok(self.set_high())
+        }
+
+        #[inline]
+        fn set_low(&mut self) -> Result<(), Self::Error> {
+            Ok(self.set_low())
+        }
+    }
+
+    impl<'d, T: Pin> StatefulOutputPin for OutputOpenDrain<'d, T> {
+        #[inline]
+        fn is_set_high(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_set_high())
+        }
+
+        /// Is the output pin set as low?
+        #[inline]
+        fn is_set_low(&self) -> Result<bool, Self::Error> {
+            Ok(self.is_set_low())
+        }
+    }
+
+    impl<'d, T: Pin> ToggleableOutputPin for OutputOpenDrain<'d, T> {
+        #[inline]
+        fn toggle(&mut self) -> Result<(), Self::Error> {
+            Ok(self.toggle())
+        }
+    }
+}
+
 #[cfg(feature = "unstable-pac")]
 pub mod low_level {
     pub use super::sealed::*;