Merge pull request #4121 from sebgab/reset_spi_when_applying_config_stm32

Fix STM32H7 SpiDeviceWithConfig does not properly apply the config

1 files changed, 8 insertions, 0 deletions

diff --git a/embassy-stm32/src/spi/mod.rs b/embassy-stm32/src/spi/mod.rs
index 6578aa1aa..9e2ba093a 100644
--- a/embassy-stm32/src/spi/mod.rs
+++ b/embassy-stm32/src/spi/mod.rs
@@ -284,6 +284,10 @@ impl<'d, M: PeriMode> Spi<'d, M> {
 
         #[cfg(any(spi_v3, spi_v4, spi_v5))]
         {
+            self.info.regs.cr1().modify(|w| {
+                w.set_spe(false);
+            });
+
             self.info.regs.cfg2().modify(|w| {
                 w.set_cpha(cpha);
                 w.set_cpol(cpol);
@@ -292,6 +296,10 @@ impl<'d, M: PeriMode> Spi<'d, M> {
             self.info.regs.cfg1().modify(|w| {
                 w.set_mbr(br);
             });
+
+            self.info.regs.cr1().modify(|w| {
+                w.set_spe(true);
+            });
         }
         Ok(())
     }