Merge pull request #170 from JanekGraff/compile-fix

Fix compilation error in spi.rs for rust Version 1.73+

Author: therealprof

CHANGELOG.md

@@ -21,6 +21,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Wrong mode when using PWM channel 2 of a two-channel timer
 - `adc_values` example conversion error
+- `invalid_reference_casting` Compilation error in spi.rs for Rust version 1.73+ (
+  See [PR#112431](https://github.com/rust-lang/rust/pull/112431) for more info)
+- `unused_doc_comments` Warning in rcc.rs
 
 ## [v0.18.0] - 2021-11-14
 

src/rcc.rs

@@ -14,7 +14,7 @@ impl RccExt for RCC {
             pclk: None,
             sysclk: None,
             clock_src: SysClkSource::HSI,
-            /// CRS is only available on devices with HSI48
+            // CRS is only available on devices with HSI48
             #[cfg(any(
                 feature = "stm32f042",
                 feature = "stm32f048",

src/spi.rs

@@ -413,7 +413,7 @@ where
 
     fn send_u8(&mut self, byte: u8) {
         // NOTE(write_volatile) see note above
-        unsafe { ptr::write_volatile(&self.spi.dr as *const _ as *mut u8, byte) }
+        unsafe { ptr::write_volatile(ptr::addr_of!(self.spi.dr) as *mut u8, byte) }
     }
 
     fn read_u16(&mut self) -> u16 {
@@ -423,7 +423,7 @@ where
 
     fn send_u16(&mut self, byte: u16) {
         // NOTE(write_volatile) see note above
-        unsafe { ptr::write_volatile(&self.spi.dr as *const _ as *mut u16, byte) }
+        unsafe { ptr::write_volatile(ptr::addr_of!(self.spi.dr) as *mut u16, byte) }
     }
 
     pub fn release(self) -> (SPI, (SCKPIN, MISOPIN, MOSIPIN)) {