Merge pull request #3213 from embedded-rust-iml/stm32l4-low-power

Implement low-power feature for STM32L4 MCUs

2 files changed, 6 insertions, 3 deletions

diff --git a/embassy-stm32/src/rtc/low_power.rs b/embassy-stm32/src/rtc/low_power.rs
index b9aaa63b9..875eaa639 100644
--- a/embassy-stm32/src/rtc/low_power.rs
+++ b/embassy-stm32/src/rtc/low_power.rs
@@ -65,7 +65,7 @@ pub(crate) enum WakeupPrescaler {
     Div16 = 16,
 }
 
-#[cfg(any(stm32f4, stm32l0, stm32g4, stm32l5, stm32wb, stm32h5, stm32g0))]
+#[cfg(any(stm32f4, stm32l0, stm32g4, stm32l4, stm32l5, stm32wb, stm32h5, stm32g0))]
 impl From<WakeupPrescaler> for crate::pac::rtc::vals::Wucksel {
     fn from(val: WakeupPrescaler) -> Self {
         use crate::pac::rtc::vals::Wucksel;
@@ -79,7 +79,7 @@ impl From<WakeupPrescaler> for crate::pac::rtc::vals::Wucksel {
     }
 }
 
-#[cfg(any(stm32f4, stm32l0, stm32g4, stm32l5, stm32wb, stm32h5, stm32g0))]
+#[cfg(any(stm32f4, stm32l0, stm32g4, stm32l4, stm32l5, stm32wb, stm32h5, stm32g0))]
 impl From<crate::pac::rtc::vals::Wucksel> for WakeupPrescaler {
     fn from(val: crate::pac::rtc::vals::Wucksel) -> Self {
         use crate::pac::rtc::vals::Wucksel;
diff --git a/embassy-stm32/src/rtc/v2.rs b/embassy-stm32/src/rtc/v2.rs
index cdc1cb299..5d9025bbe 100644
--- a/embassy-stm32/src/rtc/v2.rs
+++ b/embassy-stm32/src/rtc/v2.rs
@@ -131,10 +131,13 @@ impl SealedInstance for crate::peripherals::RTC {
     #[cfg(all(feature = "low-power", stm32f4))]
     const EXTI_WAKEUP_LINE: usize = 22;
 
+    #[cfg(all(feature = "low-power", stm32l4))]
+    const EXTI_WAKEUP_LINE: usize = 20;
+
     #[cfg(all(feature = "low-power", stm32l0))]
     const EXTI_WAKEUP_LINE: usize = 20;
 
-    #[cfg(all(feature = "low-power", stm32f4))]
+    #[cfg(all(feature = "low-power", any(stm32f4, stm32l4)))]
     type WakeupInterrupt = crate::interrupt::typelevel::RTC_WKUP;
 
     #[cfg(all(feature = "low-power", stm32l0))]