Fix warnings for embassy-stm32 and embassy-stm32-examples

embassy-stm32/src/spi/mod.rs

@@ -7,6 +7,7 @@ pub use _version::*;
 
 use crate::gpio::Pin;
 
+#[cfg_attr(feature = "defmt", derive(defmt::Format))]
 pub enum Error {
     Framing,
     Crc,

embassy-stm32/src/spi/v1.rs

@@ -19,7 +19,6 @@ impl WordSize {
 }
 
 pub struct Spi<'d, T: Instance> {
-    //peri: T,
     sck: AnyPin,
     mosi: AnyPin,
     miso: AnyPin,
@@ -30,7 +29,7 @@ pub struct Spi<'d, T: Instance> {
 impl<'d, T: Instance> Spi<'d, T> {
     pub fn new<F>(
         pclk: Hertz,
-        peri: impl Unborrow<Target = T> + 'd,
+        _peri: impl Unborrow<Target = T> + 'd,
         sck: impl Unborrow<Target = impl SckPin<T>>,
         mosi: impl Unborrow<Target = impl MosiPin<T>>,
         miso: impl Unborrow<Target = impl MisoPin<T>>,
@@ -40,7 +39,7 @@ impl<'d, T: Instance> Spi<'d, T> {
     where
         F: Into<Hertz>,
     {
-        unborrow!(peri, sck, mosi, miso);
+        unborrow!(sck, mosi, miso);
 
         unsafe {
             sck.set_as_af(sck.af_num());
@@ -89,7 +88,6 @@ impl<'d, T: Instance> Spi<'d, T> {
         }
 
         Self {
-            //peri,
             sck,
             mosi,
             miso,