Add low-power support for stm32l5

1 files changed, 13 insertions, 7 deletions

diff --git a/embassy-stm32/src/rtc/mod.rs b/embassy-stm32/src/rtc/mod.rs
index 65e8713f0..1ffb567b3 100644
--- a/embassy-stm32/src/rtc/mod.rs
+++ b/embassy-stm32/src/rtc/mod.rs
@@ -24,7 +24,7 @@ use crate::time::Hertz;
     ),
     path = "v2.rs"
 )]
-#[cfg_attr(any(rtc_v3, rtc_v3u5), path = "v3.rs")]
+#[cfg_attr(any(rtc_v3, rtc_v3u5, rtc_v3l5), path = "v3.rs")]
 mod _version;
 #[allow(unused_imports)]
 pub use _version::*;
@@ -43,7 +43,7 @@ pub(crate) enum WakeupPrescaler {
     Div16 = 16,
 }
 
-#[cfg(any(stm32wb, stm32f4, stm32l0, stm32g4))]
+#[cfg(any(stm32wb, stm32f4, stm32l0, stm32g4, stm32l5))]
 impl From<WakeupPrescaler> for crate::pac::rtc::vals::Wucksel {
     fn from(val: WakeupPrescaler) -> Self {
         use crate::pac::rtc::vals::Wucksel;
@@ -57,7 +57,7 @@ impl From<WakeupPrescaler> for crate::pac::rtc::vals::Wucksel {
     }
 }
 
-#[cfg(any(stm32wb, stm32f4, stm32l0, stm32g4))]
+#[cfg(any(stm32wb, stm32f4, stm32l0, stm32g4, stm32l5))]
 impl From<crate::pac::rtc::vals::Wucksel> for WakeupPrescaler {
     fn from(val: crate::pac::rtc::vals::Wucksel) -> Self {
         use crate::pac::rtc::vals::Wucksel;
@@ -348,7 +348,7 @@ impl Rtc {
     ) {
         use embassy_time::{Duration, TICK_HZ};
 
-        #[cfg(any(rtc_v3, rtc_v3u5))]
+        #[cfg(any(rtc_v3, rtc_v3u5, rtc_v3l5))]
         use crate::pac::rtc::vals::Calrf;
 
         // Panic if the rcc mod knows we're not using low-power rtc
@@ -375,7 +375,7 @@ impl Rtc {
                 while !regs.isr().read().wutwf() {}
             }
 
-            #[cfg(any(rtc_v3, rtc_v3u5))]
+            #[cfg(any(rtc_v3, rtc_v3u5, rtc_v3l5))]
             {
                 regs.scr().write(|w| w.set_cwutf(Calrf::CLEAR));
                 while !regs.icsr().read().wutwf() {}
@@ -404,7 +404,7 @@ impl Rtc {
     /// was called, otherwise none
     pub(crate) fn stop_wakeup_alarm(&self, cs: critical_section::CriticalSection) -> Option<embassy_time::Duration> {
         use crate::interrupt::typelevel::Interrupt;
-        #[cfg(any(rtc_v3, rtc_v3u5))]
+        #[cfg(any(rtc_v3, rtc_v3u5, rtc_v3l5))]
         use crate::pac::rtc::vals::Calrf;
 
         let instant = self.instant().unwrap();
@@ -420,13 +420,19 @@ impl Rtc {
                 ))]
                 regs.isr().modify(|w| w.set_wutf(false));
 
-                #[cfg(any(rtc_v3, rtc_v3u5))]
+                #[cfg(any(rtc_v3, rtc_v3u5, rtc_v3l5))]
                 regs.scr().write(|w| w.set_cwutf(Calrf::CLEAR));
 
+                #[cfg(not(stm32l5))]
                 crate::pac::EXTI
                     .pr(0)
                     .modify(|w| w.set_line(RTC::EXTI_WAKEUP_LINE, true));
 
+                #[cfg(stm32l5)]
+                crate::pac::EXTI
+                    .fpr(0)
+                    .modify(|w| w.set_line(RTC::EXTI_WAKEUP_LINE, true));
+
                 <RTC as crate::rtc::sealed::Instance>::WakeupInterrupt::unpend();
             });
         }