From 3394f3ab9d2c0640bbd0804d5fd28cc68153786d Mon Sep 17 00:00:00 2001
From: Frank Stevenson <frank.stevenson@strydefurther.com>
Date: Thu, 24 Jul 2025 13:51:35 +0200
Subject: Panic on improper auto-calibration configurations

---
 embassy-stm32/src/rcc/u5.rs | 5 ++---
 1 file changed, 2 insertions(+), 3 deletions(-)

diff --git a/embassy-stm32/src/rcc/u5.rs b/embassy-stm32/src/rcc/u5.rs
index ae0ef73f4..d12416a72 100644
--- a/embassy-stm32/src/rcc/u5.rs
+++ b/embassy-stm32/src/rcc/u5.rs
@@ -191,9 +191,8 @@ pub(crate) unsafe fn init(config: Config) {
                         // MSIK is active and using LSE for auto-calibration
                         Some(lse_config.frequency)
                     }
-                    // improper configuration, no LSE calibration
-                    _ => None,
-                }
+                    // improper configuration
+                    _ => panic!("MSIx auto-calibration is enabled for a source that has not been configured.")                }
             } else {
                 None
             }
-- 
cgit