From 971bc1109d7e78aa65c5744dfe0c36c437a35bf3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Robert=20J=C3=B6rdens?= <rj@quartiq.de>
Date: Thu, 3 Jun 2021 15:33:09 +0000
Subject: [PATCH] pll: add advance()

---
 dsp/src/pll.rs | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/dsp/src/pll.rs b/dsp/src/pll.rs
index 8df750f..989facd 100644
--- a/dsp/src/pll.rs
+++ b/dsp/src/pll.rs
@@ -78,6 +78,13 @@ impl PLL {
         self.y = self.y.wrapping_add(f);
         (self.y, f)
     }
+
+    /// Advance the PLL without providing a new timestamp.
+    pub fn advance(&mut self) -> (i32, i32) {
+        self.x = self.x.wrapping_add(self.f);
+        self.y = self.y.wrapping_add(self.f);
+        (self.y, self.f)
+    }
 }
 
 #[cfg(test)]