Merge #372

372: Fix, enable PWR clock before accessing the PWR_CR r=burrbull a=apeng2012 dbp can't be written to unless PWRen has been set. Co-authored-by: apeng2012 <[email protected]>
stm32-rs · Nov 15, 2021 · 127ab14 · 127ab14
2 parents f101160 + e0acb5e
commit 127ab14
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -37,6 +37,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 ### Fixed
 
+- RTC not enable PWR clock
 - USART2 remap
 - Fix > 2 byte i2c reads
 - Send stop after acknowledge errors on i2c

diff --git a/src/rcc.rs b/src/rcc.rs
@@ -327,6 +327,7 @@ impl BKP {
         // Enable the backup interface by setting PWREN and BKPEN
         let rcc = unsafe { &(*RCC::ptr()) };
         crate::pac::BKP::enable(rcc);
+        crate::pac::PWR::enable(rcc);
 
         // Enable access to the backup registers
         pwr.cr.modify(|_r, w| w.dbp().set_bit());