From b8fa1d194238a3f45d5db01d1909ae00577b2af7 Mon Sep 17 00:00:00 2001
From: Jonathan 'theJPster' Pallant <github@thejpster.org.uk>
Date: Sat, 15 Oct 2016 18:48:19 +0100
Subject: [PATCH] Add modify method to RW.
---
Cargo.toml | 7 +++++--
src/lib.rs | 7 +++++++
2 files changed, 12 insertions(+), 2 deletions(-)
diff --git a/Cargo.toml b/Cargo.toml
index de5489f..04019d8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,9 +1,12 @@
[package]
-authors = ["Jorge Aparicio <japaricious@gmail.com>"]
+authors = [
+ "Jorge Aparicio <japaricious@gmail.com>",
+ "Jonathan 'theJPster' Pallant <github@thejpster.org.uk>"
+]
description = "Volatile access to memory mapped hardware registers"
documentation = "https://docs.rs/volatile-register"
keywords = ["volatile", "register"]
license = "MIT OR Apache-2.0"
name = "volatile-register"
repository = "https://github.com/japaric/volatile-register"
-version = "0.1.1"
+version = "0.1.2"
diff --git a/src/lib.rs b/src/lib.rs
index d170994..83274c3 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -78,6 +78,13 @@ impl<T> RW<T>
ptr::write_volatile(&mut self.register, value);
}
}
+
+ /// Perform a read-modify-write, using `func` to perform the modification.
+ pub fn modify<F>(&mut self, func: F) where F: FnOnce(T) -> T {
+ let mut t = self.read();
+ t = func(t);
+ self.write(t);
+ }
}
/// Write-Only register
--
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