fix low-power: APB1 needed for LSE

2023-09-21 17:17:58 +02:00
parent 5626a28af2
commit ad64d7b20b
2 changed files with 5 additions and 2 deletions
--- a/embassy-stm32/src/rcc/bd.rs
+++ b/embassy-stm32/src/rcc/bd.rs
@ -88,6 +88,11 @@ impl BackupDomain {
    ))]
    #[allow(dead_code, unused_variables)]
    pub fn configure_ls(clock_source: RtcClockSource, lsi: bool, lse: Option<LseDrive>) {
+        if lsi || lse.is_some() {
+            use crate::rtc::sealed::Instance;
+            crate::peripherals::RTC::enable_peripheral_clk();
+        }
+
        if lsi {
            #[cfg(rtc_v3u5)]
            let csr = crate::pac::RCC.bdcr();