Merge pull request #3792 from adamgreig/stm32-clkmux-unreachable

Dirbaio · web-flow · commit 195b1a593a4f · 2025-01-22T01:22:37.000Z
stm32: Change unreachable panic to explicit error message when access…
diff --git a/embassy-stm32/build.rs b/embassy-stm32/build.rs
@@ -532,7 +532,11 @@ fn main() {
                 match crate::pac::RCC.#fieldset_name().read().#field_name() {
                     #match_arms
                     #[allow(unreachable_patterns)]
-                    _ => unreachable!(),
+                    _ => panic!(
+                        "attempted to use peripheral '{}' but its clock mux is not set to a valid \
+                         clock. Change 'config.rcc.mux' to another clock.",
+                        #peripheral
+                    )
                 }
             }
         }

Original file line number	Diff line number	Diff line change
`@@ -532,7 +532,11 @@ fn main() {`
`532`	`532`	`match crate::pac::RCC.#fieldset_name().read().#field_name() {`
`533`	`533`	`#match_arms`
`534`	`534`	`#[allow(unreachable_patterns)]`
`535`		`- _ => unreachable!(),`
	`535`	`+ _ => panic!(`
	`536`	`+ "attempted to use peripheral '{}' but its clock mux is not set to a valid \`
	`537`	`+ clock. Change 'config.rcc.mux' to another clock.",`
	`538`	`+ #peripheral`
	`539`	`+ )`
`536`	`540`	`}`
`537`	`541`	`}`
`538`	`542`	`}`