Add RegisterBlock trait

Author: burrbull

CHANGELOG.md

@@ -9,6 +9,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Added
 
+- RegisterBlock trait (like `Deref`, but don't require `self` instance,
+  only for memory fixed peripherals)
+
 - New `-m` switch generates a `mod.rs` file instead of `lib.rs`, which can
   be used as a module inside a crate without further modification.
 

src/generate/generic.rs

@@ -1,5 +1,14 @@
 use core::marker;
 
+///This trait allows to get raw pointer on derived peripheral
+///as block of registers of base peripheral (like unsafe `Deref`)
+pub trait RegisterBlock {
+    ///Type of RegisterBlock of base peripheral
+    type RB;
+    ///Take peripheral address as raw pointer
+    fn rb() -> *const Self::RB;
+}
+
 /// Raw register type
 pub trait RegisterSpec {
     /// Raw register type (`u8`, `u16`, `u32`, ...).

src/generate/peripheral.rs

@@ -79,6 +79,15 @@ pub fn render(
             }
         }
 
+        impl crate::RegisterBlock for #name_pc {
+            type RB = #base::RegisterBlock;
+
+            #[inline(always)]
+            fn rb() -> *const Self::RB {
+                #name_pc::ptr()
+            }
+        }
+
         impl core::fmt::Debug for #name_pc {
             fn fmt(&self, f: &mut core::fmt::Formatter) -> core::fmt::Result {
                 f.debug_struct(#name_str).finish()