Support for embedded_hal 1.0.0-alpha.8 in addition to 0.2.4

Co-authored-by: Chris Sidebottom <[email protected]>

Author: Ashutosh Parkhi

Cargo.toml

@@ -21,6 +21,8 @@ bare-metal = "1"
 volatile-register = "0.2.0"
 bitfield = "0.13.2"
 embedded-hal = "0.2.4"
+eh1_0_alpha = { version = "=1.0.0-alpha.8", package="embedded-hal", optional=true }
+
 
 [dependencies.serde]
 version = "1"

src/delay.rs

@@ -1,6 +1,11 @@
 //! A delay driver based on SysTick.
 
 use crate::peripheral::{syst::SystClkSource, SYST};
+#[cfg(feature = "eh1_0_alpha")]
+use core::convert::Infallible;
+
+#[cfg(feature = "eh1_0_alpha")]
+use eh1_0_alpha::delay::blocking::DelayUs as EH1DelayUs;
 use embedded_hal::blocking::delay::{DelayMs, DelayUs};
 
 /// System timer (SysTick) as a delay provider.
@@ -75,6 +80,22 @@ impl Delay {
     }
 }
 
+#[cfg(feature = "eh1_0_alpha")]
+impl EH1DelayUs for Delay {
+    type Error = Infallible;
+
+    #[inline]
+    fn delay_us(&mut self, us: u32) -> Result<(), Self::Error> {
+        Delay::delay_us(self, us);
+        Ok(())
+    }
+
+    fn delay_ms(&mut self, us: u32) -> Result<(), Self::Error> {
+        Delay::delay_ms(self, us);
+        Ok(())
+    }
+}
+
 impl DelayMs<u32> for Delay {
     #[inline]
     fn delay_ms(&mut self, ms: u32) {