From b6a383811a775d1cb98b4fb2070c55e95c66a648 Mon Sep 17 00:00:00 2001
From: Dominic <git@msrd0.de>
Date: Mon, 11 Mar 2024 17:51:53 +0100
Subject: [PATCH] Improve panic message when requesting frequency higher than
 clock

Previously it would panic with message "unreachable", which isn't
particularly clear about what the problem is and how to fix it.
---
 embassy-stm32/src/spi/mod.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/embassy-stm32/src/spi/mod.rs b/embassy-stm32/src/spi/mod.rs
index 172bc8112..b517f640a 100644
--- a/embassy-stm32/src/spi/mod.rs
+++ b/embassy-stm32/src/spi/mod.rs
@@ -700,7 +700,7 @@ use vals::Mbr as Br;
 
 fn compute_baud_rate(clocks: Hertz, freq: Hertz) -> Br {
     let val = match clocks.0 / freq.0 {
-        0 => unreachable!(),
+        0 => panic!("You are trying to reach a frequency higher than the clock"),
         1..=2 => 0b000,
         3..=5 => 0b001,
         6..=11 => 0b010,