1 files changed, 8 insertions, 1 deletions

diff --git a/embassy-stm32/src/macros.rs b/embassy-stm32/src/macros.rs
index 7f8076043..dcd25cbe9 100644
--- a/embassy-stm32/src/macros.rs
+++ b/embassy-stm32/src/macros.rs
@@ -106,7 +106,14 @@ macro_rules! new_pin {
     ($name:ident, $aftype:expr, $speed:expr, $pull:expr) => {{
         let pin = $name.into_ref();
         pin.set_as_af_pull(pin.af_num(), $aftype, $pull);
-        pin.set_speed($speed);
+        // Do not call set_speed on AFType::Input, as MODE and CNF bits are not independent
+        // for gpio_v1
+        match $aftype {
+            crate::gpio::AFType::Input => {}
+            _ => {
+                pin.set_speed($speed);
+            }
+        };
         Some(pin.map_into())
     }};
 }