From 57938d1174a2c8f29448b4fffaea33dba06ae653 Mon Sep 17 00:00:00 2001
From: vinsynth <1.5vhunt@gmail.com>
Date: Mon, 5 May 2025 17:32:38 -0400
Subject: [PATCH] fix h7 sai example start sequence

---
 examples/stm32h7/src/bin/sai.rs | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/examples/stm32h7/src/bin/sai.rs b/examples/stm32h7/src/bin/sai.rs
index 95ffe257a..79a856b3b 100644
--- a/examples/stm32h7/src/bin/sai.rs
+++ b/examples/stm32h7/src/bin/sai.rs
@@ -112,8 +112,10 @@ async fn main(_spawner: Spawner) {
     let mut buf = [0u32; HALF_DMA_BUFFER_LENGTH];
 
     loop {
-        sai_receiver.read(&mut buf).await.unwrap();
+        // write() must be called before read() to start the master (transmitter)
+        // clock used by the receiver
         sai_transmitter.write(&buf).await.unwrap();
+        sai_receiver.read(&mut buf).await.unwrap();
     }
 }