From 87e97fb69d31606456ddbf9e3308364773648929 Mon Sep 17 00:00:00 2001
From: elagil <elagil@takanome.de>
Date: Sat, 24 Aug 2024 20:16:00 +0200
Subject: [PATCH] feat: add function to check if SAI is muted

---
 embassy-stm32/src/sai/mod.rs | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/embassy-stm32/src/sai/mod.rs b/embassy-stm32/src/sai/mod.rs
index c48d81b5f..6bf184dd8 100644
--- a/embassy-stm32/src/sai/mod.rs
+++ b/embassy-stm32/src/sai/mod.rs
@@ -987,6 +987,21 @@ impl<'d, T: Instance, W: word::Word> Sai<'d, T, W> {
         ch.cr2().modify(|w| w.set_mute(value));
     }
 
+    /// Determine the mute state of the receiver.
+    ///
+    /// Clears the mute state flag in the status register.
+    pub fn is_muted(&self) -> Result<bool, Error> {
+        match &self.ring_buffer {
+            RingBuffer::Readable(_) => {
+                let ch = T::REGS.ch(self.sub_block as usize);
+                let mute_state = ch.sr().read().mutedet();
+                ch.clrfr().write(|w| w.set_cmutedet(true));
+                Ok(mute_state)
+            }
+            _ => Err(Error::NotAReceiver),
+        }
+    }
+
     /// Write data to the SAI ringbuffer.
     ///
     /// This appends the data to the buffer and returns immediately. The