Merge pull request #4735 from charlesbmi/mspm0-open-drain

[mspm0] fix open-drain config

1 files changed, 6 insertions, 1 deletions

diff --git a/embassy-mspm0/src/gpio.rs b/embassy-mspm0/src/gpio.rs
index a4d41aa71..13da4f30b 100644
--- a/embassy-mspm0/src/gpio.rs
+++ b/embassy-mspm0/src/gpio.rs
@@ -156,7 +156,12 @@ impl<'d> Flex<'d> {
             w.set_pf(GPIO_PF);
             w.set_hiz1(true);
             w.set_pc(true);
-            w.set_inena(false);
+            w.set_inena(true);
+        });
+
+        // Enable output driver (DOE) - required for open-drain to drive low
+        self.pin.block().doeset31_0().write(|w| {
+            w.set_dio(self.pin.bit_index(), true);
         });
 
         self.set_pull(Pull::None);