Add set_0_* to rw1c! macro (#148)

* Add set_0_* to rw1c! macro

This is necessary to avoid clearing certains bits, such as Port
Enable/Disable.

Supersedes #146

* Update CHANGELOG

Co-authored-by: Hiroki Tokunaga <[email protected]>

Author: Demindiro

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 ## Unreleased - ReleaseDate
 ### Added
+- `set_0_*` for all RW1C bits, which sets the bit to 0. This prevents the bit from being cleared on write.
 - `Default` implementations for registers without RsvdP bits, which allows avoiding a redundant read.
 
 ## 0.9.0 - 2022-08-23

src/macros.rs

@@ -121,6 +121,15 @@ macro_rules! rw1c_bit {
                 self.0[$offset].set_bit($bit,true);
                 self
             }
+
+            #[doc = "Set the "]
+            #[doc = $name]
+            #[doc = " bit to 0, preventing the bit from being cleared on write."]
+            pub fn [<set_0_ $method>](&mut self) -> &mut Self {
+                use bit_field::BitField;
+                self.0[$offset].set_bit($bit,false);
+                self
+            }
         }
     };
     ($bit:literal,$method:ident,$name:literal) => {
@@ -134,6 +143,15 @@ macro_rules! rw1c_bit {
                 self.0.set_bit($bit,true);
                 self
             }
+
+            #[doc = "Set the "]
+            #[doc = $name]
+            #[doc = " bit to 0, preventing the bit from being cleared on write."]
+            pub fn [<set_0_ $method>](&mut self) -> &mut Self {
+                use bit_field::BitField;
+                self.0.set_bit($bit,false);
+                self
+            }
         }
     };
 }