2 files changed, 14 insertions, 5 deletions

diff --git a/tests/stm32/Cargo.toml b/tests/stm32/Cargo.toml
index e11e585dd..ef835eed8 100644
--- a/tests/stm32/Cargo.toml
+++ b/tests/stm32/Cargo.toml
@@ -11,7 +11,7 @@ stm32f429zi = ["embassy-stm32/stm32f429zi", "chrono", "eth", "stop", "can", "not
 stm32g071rb = ["embassy-stm32/stm32g071rb", "not-gpdma", "dac-adc-pin"]     # Nucleo
 stm32c031c6 = ["embassy-stm32/stm32c031c6", "not-gpdma"]     # Nucleo
 stm32g491re = ["embassy-stm32/stm32g491re", "not-gpdma"]     # Nucleo
-stm32h755zi = ["embassy-stm32/stm32h755zi-cm7", "not-gpdma", "eth", "dac-adc-pin"] # Nucleo
+stm32h755zi = ["embassy-stm32/stm32h755zi-cm7", "chrono", "not-gpdma", "eth", "dac-adc-pin"] # Nucleo
 stm32wb55rg = ["embassy-stm32/stm32wb55rg", "not-gpdma", "ble", "mac" ]     # Nucleo
 stm32h563zi = ["embassy-stm32/stm32h563zi", "eth"]     # Nucleo
 stm32u585ai = ["embassy-stm32/stm32u585ai"]     # IoT board
diff --git a/tests/stm32/src/bin/rtc.rs b/tests/stm32/src/bin/rtc.rs
index 22be6fac5..1f0d630c9 100644
--- a/tests/stm32/src/bin/rtc.rs
+++ b/tests/stm32/src/bin/rtc.rs
@@ -12,15 +12,24 @@ use defmt::assert;
 use embassy_executor::Spawner;
 use embassy_stm32::rcc::RtcClockSource;
 use embassy_stm32::rtc::{Rtc, RtcConfig};
-use embassy_stm32::time::Hertz;
 use embassy_time::{Duration, Timer};
 
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let mut config = config();
 
-    config.rcc.lse = Some(Hertz(32_768));
-    config.rcc.rtc = Some(RtcClockSource::LSE);
+    #[cfg(feature = "stm32h755zi")]
+    {
+        use embassy_stm32::rcc::Lse;
+        config.rcc.lse = Some(Lse::Oscillator);
+        config.rcc.rtc_mux = Some(RtcClockSource::LSE);
+    }
+    #[cfg(not(feature = "stm32h755zi"))]
+    {
+        use embassy_stm32::time::Hertz;
+        config.rcc.lse = Some(Hertz(32_768));
+        config.rcc.rtc = Some(RtcClockSource::LSE);
+    }
 
     let p = embassy_stm32::init(config);
     info!("Hello World!");
@@ -40,7 +49,7 @@ async fn main(_spawner: Spawner) {
     let then: NaiveDateTime = rtc.now().unwrap().into();
     let seconds = (then - now).num_seconds();
 
-    defmt::info!("measured = {}", seconds);
+    info!("measured = {}", seconds);
 
     assert!(seconds > 3 && seconds < 7);