From 17e78175a69dc96ea8f71c41949cbc705d82b51a Mon Sep 17 00:00:00 2001
From: pennae <github@quasiparticle.net>
Date: Wed, 3 May 2023 11:21:58 +0200
Subject: [PATCH] rp/pio: disable state machines on drop

---
 embassy-rp/src/pio.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/embassy-rp/src/pio.rs b/embassy-rp/src/pio.rs
index 32e9be74..d05eef04 100644
--- a/embassy-rp/src/pio.rs
+++ b/embassy-rp/src/pio.rs
@@ -324,6 +324,9 @@ pub struct PioStateMachineInstance<'d, PIO: PioInstance, const SM: usize> {
 
 impl<'d, PIO: PioInstance, const SM: usize> Drop for PioStateMachineInstance<'d, PIO, SM> {
     fn drop(&mut self) {
+        unsafe {
+            PIO::PIO.ctrl().write_clear(|w| w.set_sm_enable(1 << SM));
+        }
         on_pio_drop::<PIO>();
     }
 }