Merge pull request #4541 from mbrieske/fix_blocking_i2c

fix stm32 i2c: wait for STOP flag in blocking read to terminate read transaction

1 files changed, 5 insertions, 2 deletions

diff --git a/embassy-stm32/src/i2c/v2.rs b/embassy-stm32/src/i2c/v2.rs
index 4d341bab1..aeb4c1c00 100644
--- a/embassy-stm32/src/i2c/v2.rs
+++ b/embassy-stm32/src/i2c/v2.rs
@@ -408,6 +408,7 @@ impl<'d, M: Mode, IM: MasterMode> I2c<'d, M, IM> {
                 *byte = self.info.regs.rxdr().read().rxdata();
             }
         }
+        self.wait_stop(timeout)?;
         Ok(())
     }
 
@@ -463,11 +464,13 @@ impl<'d, M: Mode, IM: MasterMode> I2c<'d, M, IM> {
             }
         }
         // Wait until the write finishes
-        let result = self.wait_tc(timeout);
+        self.wait_tc(timeout)?;
         if send_stop {
             self.master_stop();
+            self.wait_stop(timeout)?;
         }
-        result
+
+        Ok(())
     }
 
     // =========================